Star Micronics ND-10, ND-15 User Manual

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ND-10115

USER’S MANUAL

NOT INTENDED FOR SALE

PN 80820 163

Federal Communications Commission

Radio Frequency Interference Statement

This equipment generates and uses radio frequency energy and if not mstalled and used properly. that is. in strict accordance with the manufacturer’s instructions. may cause interference to radio and television reception It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a restdential installation. However. there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception. which can be determined by turning the eqmpment off and on. the user is encouraged to try to correct the Interference by one ot- more of the following measures:

l Reorient the receiv-ing antenna l Relocate the computer with respect to the receiver l Move the computer away from the receiver l Plug the computer into a different outlet so that computer and receiver are on

different branch circuits. If necessary, the user should consult the dealer or an experienced redio/teIevision technician for additional suggestions. The user may find the following booklet, prepared by the Federal Communications Commission helpful: “How to Identify and Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government Printing Office, Washington. D.C., 20402. Stock No. 004-000-00345-4.

For compliance with Federal Noise Interference Standard, this eqmpment requires a shielded cable.

This statement will be applied only for the printers marketed in U.S.A.

Self Declaration

Radio interferences regarding this equipment has been eliminated according to Vfg

1046/1984 announced by the DBP. DBP has been informed about the introduction of this special equipment and has been conceded the right to examine the whole series. It is upon the responsibility of the user to assume that his own assembled system is in accordance with the technical regulations under Vfg 1046/1984. To observe FTZ-regulations it is necessary, to establish all connections to the printer with shielded cable. The equipment may only be opened by qualified service representatives.

This statement will be applied only for the printers marketed in West Germany.

Trademark Acknowledgement

ND-10/15: Star Micronics Co., Ltd. Apple II: Apple Computer Inc. EasyWriter II: Information Unlimited Software. Inc.

FX-85: Seiko Epson Corp.

IBM PC, IBM Graphics Printer, IBM Proprinter: International Business Machines Corp. Lotus l-2-3: Lotus Development Corp. Microsoft BASIC: Microsoft Corporation WordStar: MicroPro International Corporation

NOTICE

soever, without STAR’s express permission is forbidden.

l The contents of this manual are subject to change without notice. l All efforts have been made to ensure the accuracy of the contents of this manual

at the time of going to press. However, should any errors be detected, STAR would be greatly appreciate being informed of them.

l The above notwithstanding, STAR can assume no responsibility for any errors

in this manual.

Table of Contents

Chapter 1

Setting Up Your Printer

Locating the printer Check the carton contents

Removing the printer cover Removing the packing tube Installing the ribbon cartridge Installing the mute cover Installing the interface board

Chapter 2

Getting to Know Your Printer

Controls and parts of the printer

Parts of the printer Controls and indicators Extra functions Other controls

Selecting and loading paper

Loading single sheets Loading sprocket-feed paper

Adjusting the print head

Testing the printer

Connecting the printer

Chapter 3

Using the Printer with Commercial Software 21

Using commercial software Word processing with the printer General concepts

The escape code The master reset code Using Near Letter Quality (NLQ) Getting the most from your print choices

Using the printer with EasyWriter II

Redefining pitch settings and print control codes A sample printout with EasyWriter II

Redefining .your own print pitches

Redefining your own print control keys

Using the printer with WordStar

User-defind print commands

Using the printer with Lotus l-2-3 Using the panel modes Advanced panel functions

Setting print start position

Setting the top of form

Setting the left and right margins

Chapter 4

Printing with BASIC

Some basics of BASIC

First steps ASCII codes and the CHR$ function Control codes The escape codes A note on command syntax Selecting the right software mode

Some special kinds of text

Near Letter Quality characters Italic printing Underlining and overlining Superscripts and subscripts

Changing the print pitch

Expanded print Condensed print Proportional printing

Making words stand out

Mixing print modes

Chapter 5

Formatting Text

Lines and line spacing

Starting a new line Reverse line feeds Changing the line spacing Moving down the page without a carriage return

Page control

Form feed Reverse form feed

Changing the page length

Top and bottom margins

Setting left and right margins Horizontal and vertical tabs

Horizontal tabs One-time horjzontal tabs Vertical tabs Vertical tab channels

Centering and aligning text

Chapter 6

Special Features of the Printer

Now hear this

Resetting the printer

Taking the printer off line

Printing the bottom of the sheet

Backspace, delete, and cancel text

Printing zeroes

Immediate-print

Adjusting the width of space between

characters

Uni-directional printing

The seven bit dilemma

Block graphics characters and special

symbols

Chapter 7

International characters sets

Printing characters in the control code area

Printing BIG characters The optional sheet feeder The macro control code

Reading a hex dump

Download Characters and Dot Graphics

103

Dot matrix printing Designing your own characters

Defining proportional characters

Downloading with the IBM-P mode

Designing your own NLQ characters

User-designed Dot Graphics

Higher resolution graphics

More graphics programming tips

Redefining alternate graphics codes

9-pin graphics mode

Chapter 8

Caring for Your Printer

Cleaning the printer Replacing the ribbon Replacing the .print head

Appendix A DIP Switch Settings

Switch functions

123

Appendix B ASCII Codes and Conversion Chart

129

135

Appendix C Function Codes

Commands to control print style

Font style controls

Print pitch controls

Special print modes

Controlling the vertical print position

Line feed and reverse line feed Form feed and related commands

Top/bottom margins and vertical tabs Controlling the horizontal print position Download character commands Dot graphics commands Macro instruction commands Other commands

Appendix D Command Summary in Numeric Order

Standard mode IBM-P mode IBM-G mode

147

201

Appendix E Technical Specifications Appendix F The Parallel Interface

Functions of the Connector Signals

Appendix G Serial Interface Specifications

Configuring the serial interface

The serial protocols

215 219

223

Index

Serial busy protocols XON/XOFF protocol ACK protocol

CHAPTER 1

SETTING UP YOUR

PRINTER

Subjects covered in Chapter 1 include -

l Choosing a suitable place for your printer

l Unpacking l Setting up

LOCATING THE PRINTER

Give some thought to the best place to put the printer. Both the printer and computer should be used in normal office surroundings. For best performance, we recommend:

l Use the printer on a flat surface. l Keep it out of direct sunlight and away from

heat-producing appliances.

l Use it only in temperatures where you are comfortable. l Avoid locations with dust, grease, or high humidity. l Supply it “clean”

electricity. Don’t connect it to the same circuit used by large, noise-producing appliances (such as refrigerators).

l Make sure the line voltage is within 10% of the voltage

specified on the identification plate.

CHECK THE CARTON CONTENTS

Open the carton and check each item in the box against Figure l- 1 to make sure that you have everything (there should be five items).

You should also have a parallel interface board to connect your computer to the printer. Also available are a parallel interface board with extra buffer memory and a serial interface board, both optional. (More on interfaces later.)

Figure l-l. Check to make sure you have all five items: 1) Printer,

2) Mute cover, 3) Paper guide, 4) Ribbon cartridge and 5) User’s manual.

q Removing the printer covei

The printer’s cover is important for two reasons - it keeps dust and dirt away from the printer’s delicate mechanism, and it absorbs nearly all of the printer’s operating sounds. Don’t take off the cover unless you have to change the ribbon or make an adjustment.

To remove the cover, lift up the back of the cover to disengage the two or three tabs at the front, then lift it off the rest of

the way. To replace the cover, slide the tabs in at the front and lower it into place. Figure l-2 shows the proper position and movement for both removing and replacing the cover.

Printer cover

Figure 1-2. Remove the printer cover by lifting carefully.

W Removing the packing tube

The printer is shipped with a protective spiral tube to keep the print head from being damaged during shipping. This tube must be removed before use. First, take off the printer cover. The protective tube is split along its bottom side to allow easy removal. Grasp one end of the spiral tube and firmly pull it upward and away from the carriage rail.

Figure 1-3. Remove the protective tube from the carriage rail.

N Installing the ribbon cartridge

This printer uses a neat, easy-to-change ribbon cartridge

with automatic threading.

To fit or change the ribbon car-

tridge:

1. Turn oj,Ythe power and remove the printer cover.

2. Slide the print head gently to the center of the printer.

Warning: The print head gets hot during operation,

so let it cool off before you touch it.

3. Set the release lever to either single sheet or sprock-

et-feed paper.

4. With the ribbon facing away from you, use the guide hold.ers as a fulcrum and lightly press the cartridge down until the two holder springs snap shut to hold the

cartridge firmly in place. See Figure l-4.

5. Check that the cartridge fits so that the drive pins engage the cartridge teeth, by turning the ribbon advance knob.

6. Gently slide the print head carriage manually all the way to your right or left until the ribbon automatically slips down into its proper place between the print head and the silver ribbon guide.

7. Replace the printer cover. (A switch on the printer prevents the printer from operating when the cover is off.)

Ribbon advance kno

Figure l-4. Press the cartridge into place until the holding springs snap into place.

Figure 1-5. To thread the ribbon, slide the print head carriage manually

to the right or left, and the ribbon will slip down by itself into its proper position.

n Installing the mute cover

The mute cover reduces the printer’s operating sounds.

Note the position of the guide pins on the mute cover as shown in Figure l-6. Holding the mute cover at each end, insert the guide pins into the cutout hooks on the printer cover. Hold the mute cover down onto the printer.

To remove it, reverse the procedure.

Mute cover

Figure 1-6. Install the mute cover by holding vertically, then lay down

on the printer cover.

n Installing the interface board

Interface cover

board

Figure 1-7. Slide the I/F board into the slot.

A parallel interface board comes standard with your printer. In addition, there are two optional interface (I/F) boards: a serial interface board that lets you connect to a serial (RS-232C) computer port; and the other board contains extra buffer memory for parallel output. All three boards are installed the same ,way.

To install or change an I/F board, turn off the power and turn the printer around. Notice the snap-on cover at the left end. Take it off by sliding it upwards.

Fit the I/F board into the side slots and slide it all the way down (don’t force it). Make sur.e that the board connector is

seated snugly in its socket. Put the cover back on and connect

the cable from your computer - you’re ready to go.

CHAPTER 2

GETTING TO KNOW

YOUR PRINTER

Subjects covered in Chapter 2 include -

l Parts of the printer - what they’re for and how to use

them

l Paper selection and loading l Adjustment l Testing printer operation

CONTROLS AND PARTS OF THE PRINTER

n Parts of the printer

PRINTER COVER - This protects the ribbon and the print

head from dust and dirt, and cuts down the sound of the printer.

MUTE COVER - This further reduces the sound of the

printer.

PAPER GUIDE - This flat plastic molding guide has two

functions, depending on what kind of paper you are using. If you are using single sheets, the guide is propped up on top of the printer, and serves as a guide. If you are using sprocket-feed paper, the guide is reversed and laid flat on top of the printer, and serves as a paper separator.

POWER CORD - This cord connects the printer to its power

source, usually a wall outlet. It’s located at the left rear of the printer.

PRINT HEAD - This is the device that does the actual

printing. Like the strike lever in a typewriter, tiny pins in the print head hit the paper through a ribbon.

TRACTOR FEED UNIT - The drive gear and sprockets of

the tractor feed unit move sprocket-feed paper through the printer.

Mute cover

Power cord

Figure 2-1. Front and rear views of the printer.

PLATEN - This is the rubber cylinder that carries paper to

the print head. INTERFACE COVER - On the back of the printer, this cover conceals and protects the interface board. The cover is cut away to expose the external connector to which you attach your computer cable.

n Controls and indicators

Now let’s go over the controls and indicators of the printer, starting with the control panel on the right. There are nine indicators and six keys on the control panel.

IO-inch type

1 S-inch type

Figure 2-2. The control panel.

POWER INDICATOR - Glows green when the power is

OiZ.

PE INDICATOR - Stands for “Paper Empty”, and glows red

when the printer runs out of paper and when certain printer malfunctions occur.

FORM LENGTH SWITCH - Tells the printer how long the

pages are.

MODE INDICATORS - Either DRAFT or NLQ glows green

to indicate the mode (set by the Mode key or DIP switch).

hIODE KEY - Changes the print mode every time it is pressed

when the On Line indicator is off.

PITCH INDICATORS - Shows the character pitch currently

set: Proportional (PROP), Pica (80 or 136) Elite (96 or 163), or Pica Condensed (137 or 233).

PRINT PIT’CH KEY - Selects one of the four available

character pitches when the On Line indicator is off.

TOF KEY - Ejects the current sheet, feeds a new sheet, and

moves the print head to the left margin when the On Line indicator is off.

PAPER FEED KEY - Advances the paper one line at a time

when the On Line indicator is off. If you hold the key down. you get consecutive line feeds.

ON LINE KEY and INDICATOR - Glows green when the

printer is ready to receive data from your computer (on line). When the printer is off line. it sends a signal to the computer indicating that it cannot accept data. Pressing the On Line key switches the printer between on line and off line. When you turn the power switch on, the printer is placed on line automatically.

n Extra functions

There are eleven more functions that are not directly specified on the control panel. You can access six of them by pressing one particular key when you turn on the power; five others are activated by pressing two control keys at once.

Hex dump

Self-test I

Self-test 2

Print quality Print pitch panel made

panel mode

Itahc panel mode

Figure 2-3. Extra functions while turning on the printer.

Forward micro-feed

Reverse micro-feed

Top of form set ,

** * * **

* *

I Right margin set

**: Hold down

*: Press

Left margin set

Figure 2-4. You can set many functions by the combinations of the control panel keys while in the Off Line mode.

For details, please refer to the end of next chapter.

n Other controls

There are other controls, not connected to the control panel.

Some of the more important ones are:

POWER SWITCH - The switch that turns the printer on

and off is at the back, on the left side.

PLATEN KNOB - This knob is at the middle of the right

side and lets you turn the platen by hand, like a typewriter.

Caution:Turn the platen knob only with the Power switch

of$ Turning the knob with the power on could damage the drive gears.

RELEASE LEVER - The release lever is on top of the printer,

near the left rear corner. It controls how strongly the paper is held against the platen. The release lever has four positions: the top setting is used for inserting paper, the next is for single sheets, the third is for sprocket-feed paper, and the bottom one is used when adjusting the paper.

PAPER BAIL - The bail is the movable bar that holds the

paper against the platen.

Its position depends on the setting

of the release lever.

DTP SWITCHES - There are two sets of eight switches that

are used in interfacing the printer to your particular computer. There are also switches to set print pitch, line spacing, and perforation skipping. See Appendix A for a complete list and explanation.

SELECTING AND LOADING PAPER

Your printer handles two basic types of paper - single sheets (stationery, envelopes, multipart business forms, etc.) and continuous paper (fan-fold perforated paper).

The release lever controls the pressure of the paper against the platen. It has four settings:

l”TO 3 - The top setting is used when you want to load paper

in the printer. c - The second setting is for normal single sheets. I& - The third is for sprocket-feed paper.

\yy - The bottom one is used when you want to release the

paper completely to adjust it.

The paper bail holds the paper against the platen according to the setting of the release lever. The bail is opened when the release lever is in the top position, closed when the lever is in the second or third positions, and opened by the printer when the lever is in the bottom position.

Figure 2-5. Use friction feed for single sheets and tractor feed for

continuous paper.

n Loading single sheets

Instead of feeding the paper in manually by turning the platen knob, you can use the release lever for automatic feeding (the printer must be turned on). Single sheets from 5.5 to 8.5 inches wide (6 to 14.5 inches for the 15-inch type) can be used and

the paper guide must be fitted:

1. Flip the clamp levers backward and move the sprockets and sheet guides on the tractor feed unit all the way to the ends.

2. With the ribs of the paper guide toward you and the sliding adjuster at the bottom left, insert the guide into the slot at the back of the printer cover.

3. Insert the guide stand in the notches provided for it and prop up the paper guide.

Figure 2-6. Raise the paper guide for loading single sheets.

Figure 2-7. Prop up the paper guide by inserting the guide stand in

the notches provided for it.

4. Position the adjuster at the triangle marked on the guide for standard margins, or set it according to your own

requirements.

5. Set the release lever for single sheets-the second position from the top.

6. Align a sheet of paper on the guide along the adjuster.

7. Turn on the power switch. (The Paper Empty indicator will glow because ther is no paper.)

8. Now set the release lever to the auto-feed setting-the top position. The printer will advance the paper automatically.

9. When the paper stops, set the release lever for single sheets again.

Figure 2-8. You can insert a sheet of paper automatically by using the release lever.

To align paper that is not in straight -

l Set the release lever to the adjustment setting. l Straighten the paper and adjust it for the margins you

want.

l Move the release lever back to its original setting.

Remember, you can also use the optional automatic sheet

feeder for single sheets.

. .

. . . .

n Loading sprocket-feed paper

This is standard computer paper, with the holes along the sides and perforations between the sheets. It is also called sprocket, punched, fan-fold, or just plain “computer paper”. It can be as narrow as 4”, and up to 10” wide (4 inches to 15.5

inches on 15-inch type).

1. Turn on the printer and set the release lever for sprocket-feed paper.

2. If the paper guide is installed, remove it, and put it aside for a moment.

3. Place a stack of fan-fold paper behind the printer.

4. Open the sprocket covers, on the right and left sprocket units, as shown in Figure 2-9.

lever

Figure 2-9. Open the sprocket covers to expose the sprocket teeth.

5. Flip the clamp levers backward. This allows the two sprocket units to move freely right and left so you can align them with the holes in the paper.

6. Feed the end of the paper into the slot next to the platen cover plate.

7. Fit the holes in the paper over the sprocket pins so the paper is even, and clamp the sprocket units in place.

8. Check that the paper is still positioned correctly, and close the sprocket covers (Figure 2-10).

9. Set the release lever to the auto-feed setting. The printer will advance the paper automatically.

10. Feed the paper through the slot in the printer cover.

11. Install the paper guide on the printer. See Figure 2-10 for details. When used with sprocket-feed paper, the guide is turned around and laid flat on top of the printer

as a paper separator. Make sure that the tabs on the

guide fit into their receivers.

Figure Z-10. Ready to load the sprocket-feed paper. Note the reversed

position of the paper.

ADJUSTING THE PRINT HEAD

The distance between the print head and the platen must be adjusted to accommodate papers of different thicknesses. To make this adjustment, move the adjustment lever, which is under the printer cover and immediately in front of the release lever (Figure 2-l 1). Pulling the adjustment lever towards you will widen the gap; pushing it away from you will narrow the

gap.

There are four positions; you can feel the lever clicking into

the various notches. The first step (shown) is the one most

commmonly used for single sheets of paper.

Try different positions until you get the best printing results.

Release lever

Adjust

Figure 2-11. The adjustment lever allows for different thicknesses ot

paper.

TESTING THE PRINTER

Your printer has two built-in programs that printout sample lines of letters, numbers, and other characters-to show you that everything’s in good working order. Self-test 1 is the long version, and self-test 2 is the short one. You can use either one to show the characters available in the printer, to check the installation of the ribbon and paper, and to check the adjustment of the head-to-platen gap.

You can print the self-test without hooking up the printer to your computer. Simply:

1. Plug in the printer (don’t turn it on yet).

2. Insert a sheet of paper (or sprocket paper, either one).

3. While holding down one of the following keys, turn on the power switch:

Paper Feed key-Self-Test 1 (long) On Line key-Self-Test 2 (short)

.-.

Self-test 1

DIP switch 2-2 ON

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DIP switch 2-2 OFF

v*fZwttrjJ ’ “kB7.99.’ (1 t+. -. /oi

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Figure 2-12. The self-tests show you what the printer can print.

When you want to terminate the long self-test function, turn

off the power switch.

CONNECTING THE PRINTER

Now that you’ve assembled and tested your printer, all that

remains is to connect it to your computer as follows:

1. Make sure that both your computer and printer are turned off.

2. Connect the printer end of the interface cable to the connector socket at the right rear of the printer as shown in Figure 2-13.

3. Connect the other end of the cable to your computer as described in the computer manual.

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Figure 2-13. Connect the cable like this.

MEMO

CHAPTER 3

USING THE PRINTER

WITH COMMERCIAL

SOFTWARE

Subjects covered in Chapter 3 include -

l Using commercial software l Controlling the printer with the Panel mode

USING COMMERCIAL SOFTWARE

Many of you purchased this printer to use with commercial

software.

You made a good choice because this printer is compatible with most commercial programs, from word processing programs to spreadsheet programs to accounting programs.

Many of these programs have a routine for describing your printer. These routines are often in “Installation programs”. They typically give you a choice of printers or printer types

to pick from. Some typical descriptions that you might pick for this printer are:

“TTY type printer with backspace”, “IBM-dot matrix printer”, “Centronics-type printer”, “Dot matrix ASCII printer” or “Epson FX series”. This printer should work Bne with any of these descriptions.

Some printer lists are not very clear, and may not include anything that you think describes this printer. If you can’t decide which description best fits this printer, we recommend that you narrow the list to two or three choices (you can quickly eliminate all the daisy-wheel printer types) and then experiment. You won’t hurt anything if you guess wrong; it just won’t work correctly. This should quickly tell you if your guess is right. If all else fails though, your printer dealer will be happy to give you some advice.

Some programs don’t ask you what kind of printer you have, but instead ask some questions about what your printer can do. The answers to the “most asked” questions are: Yes - this printer can do a “backspace”, and this printer can do a “hardware form feed”.

With these questions answered, you are ready to start

printing. Read the manual that came with your software and

the next Chapter to see how to make it send information for this printer to print. This is all you need to know to use this

printer as a regular printer. But this printer isn’t just a regular printer. This printer has many capabilities that your commercial software isn’t aware of. We will see what it takes to use some of the printer’s advanced features with commercial software in the next section.

WORD PROCESSING WITH THE PRINTER

Not many word processing programs directly support all of the advanced features of printers. They usually provide a method for using a few of the more common print features such as boldface and underlining. But as you are probably beginning to see from this manual, this printer can do much more than that.

As a result, most word processing programs provide a way of sending special codes to a printer. The actual codes used (as well as the method of entering them) will vary with different software. The theory behind these methods, however, is bas-

ically the same.

This section discusses two word processing programs and

one spreadsheet program most used by printer owners. The

programs also provide a variety of ways to enter the codes necessary to use the advanced features of this printer. These concepts can be applied to many other programs besides those detailed here. The programs are:

EasyWriter II WordStar Lotus l-2-3

If your software program is not included in this Chapter,

you should still study the different techniques used. Then, with

the help of your program manual and the supporting chapters in this manual, you should be able to figure out how yours works.

GENERAL CONCEPTS

Each word processing program has a way to get out of the standard text entry mode in order to accept the special printer function codes. WordStar uses the CONTROL key in different

ways to define the print function codes.

EasyWriter II has a system function which allows you to define print pitches and special print functions for use with the ALT key.

Your word processing User Manual (if it supports this

process) will have a section describing how to get out of the

standard program. You will probably have to figure out on your own which codes are used. The general concepts and

details of the two sample programs should be enough to help you be successful.

I The escape code

Most of the special print functions start with a code called the escape code. It can be entered in decimal or hexadeciamal

values, by an ASCII character, or by using the control keys on your keyboard; depending on which program and which computer you are using.

The escape code tells the printer to interpret the values (or

characters) following it as printer functions. The codes used to describe the functions are also entered in the same way as

the escape code. In this section, we will show you the format

each word processor uses as well as the general rules to correctly entering the function codes.

The next chapter covers how to convert the different forms

of ASCII codes. You should review Chapter 4, if you have not already done so, before working with the function codes.

n The master reset code

There is one function code which turns off all the print

functions currently being used by the printer. It is called the

master reset code and resets the printer to its DIP switch settings. These print characteristics are the same as the ones used

by the printer when it is first turned on.

The code sequence for master reset is < ESC > “@“. By checking the ASCII equivalents in Appendix C, you can see that the decimal expression is 27 64. You’ll see these numbers several times in this section.

Technically speaking, initializing the printer clears the print buffer, and the form length, character pitch, character set, line feed pitch and international character set are all reset to the values defined by their respective DIP switch settings.

We suggest you get in the habit of using the master reset code in any document where you use function codes. If you do not, the printer will keep the most recently defined characterlistics, and print any following documents the same way.

You could turn your printer off each time (which also resets the default settings) but that would be hard on the printer circuits. Also, you’ll save time and paper by letting the printer automatically reset with this code. (If you need more information on DIP switch settings for your printer, please refer to Appendix A).

n Using Near Letter Quality (NLQ)

Vith near letter quality, the printer prints more dots for each character than with the draft printing. This process results in a higher quality look to your text. Draft quality characters print. much faster, so use them for your first drafts and use near letter quality for a professional looking finished manuscript.

The escape code sequence to turn the NLQ set on is < ESC > “x” 1 and the code sequence to select draft quality is < ESC > “x” 0. The decimal equivalents are 27 120 1 and 27 120 0, respectively.

H Getting the most from your print choices

After working with the printer for a while, you may find that you want to add or change some of the print functions

we have described in this chapter.

We suggest you do three things. First, you should review

Chapter 4 and Appendix C to become as familiar as possible

with ASCII codes and the function codes.

Second, read Chapter 4 which describes them in greater detail and shows examples of how they are used in BASIC programming. The functions will, for the most part, act the same

in your word processing program.

Understanding what’s available and how they perform will help you use them correctly in your documents.

And third, follow the procedures in this chapter and your

program User’s Manual.

You may want to experiment with expanded text in combination with other print types. You can create some great looking results with these functions. If you are unsure of any functions, review them first, then try some of your own samples.

USING THE PRINTER WITH EASYWRITER II

(Note: If you have not read the “General Concepts” section in this chapter, you should do so before continuing.)

This printer can be used with most of the standard print functions available with your EasyWriter II word processing program. These functions require no special adjustments to the printer or your program. They include:

1. Printing from the Print List Form screen.

2. Setting margins, tabs and lines per inch in the ruler line of your document. (The pitch settings, however, should be adjusted to obtain maximum use. They will be discussed later in this chapter.)

3. Print settings in the System Parameter function which are either default or new settings edited by you.

You can also redefine the print functions of EasyWriter II to take advantage of many of the printing capabilities of your printer. You may already be familiar with reconfiguring the printer driver from Appendix B of your EasyWriter II User’s Manual. If not, don’t be nervous; it’s not as hard as it sounds. We will show you how to make changes in your program specifically to help you print with this printer.

By changing the pitch settings, you can use the document ruler line to print pica, elite and condensed width pitches. In addition, you can use a similar method to print in near letter

quality.

The print control codes can be redefined to enhance the final

product of your document. The boldface, underline, superscipt

and subscript functions require only a slight “recoding” of

information in the printer driver. And we have some sug-

gestions for changing the characteristics of the other print

control codes to use italic, expanded, emphasized and italicunderline print. With these options, you will have even more

flexibility printing with this printer.

n Redefining pitch settings and print control codes

In order to change the settings used in the document ruler line and the print control codes, it is necessary to edit ASCII code decimal values in the System Functions portion of your EasyWriter II program. (For more details about ASCII codes, please refer to Chapter 4.)

Your printer is considered a Type B printer by the EasyWriter II program. Before making any changes in the printer driver, you should first check to be sure the printer selection is set for printer Type B (Option 7 on the System Functions menu.)

Then follow the instructions in Appendix B of your EasyWriter II User’s Manual to reconfigure Type B printers. To become more familiar with the reconfiguration process and its terms and to make the instructions in this section easier to understand, we suggest you read through Appendix B first.

In these few paragraphs, we’ll show you the ASCII decimal values we feel provide good flexibility in printing with this printer. You should follow the instructions hands-on with your own EasyWriter II program.

The changes you will make are for pitch settings and print

control codes (also called font support). However, all the

screens involved will be explained as you see them displayed.

From the System Functions Menu, choose Option 9 (Re-

configure Printer Type B) and the printer name will be dis-

played. Type over the present printer name as follows:

1. Printer Name [Dot Matrix Printer-l

Press RETURN and the Edit Global Sequences screen will be displayed. These codes control the print functions for form feed, line feed, margin settings and automatic justification.

We do not recommend that you edit any of these codes.

Press RETURN and the Edit Pitch Table screen will be

displayed. On this screen, you will enter the ASCII decimal

values to define the print pitches. The first two fields in each

line define the pitch range (which in this case are both the same number). They should be assigned as follows:

10 = Pica

1 = Near Letter Quality On

12 = Elite

2 = Near Letter Quality Off

17 = Condensed Pica 3 = Master Reset Code

On this screen, the column labeled “Sequence” is used to

define the print functions in their ASCII decimal values. For these print pitches, we will use a combination of codes to turn near letter quality on and off and to choose the function code for each pitch. (For more details on function codes, please refer to Appendix C.)

Follow the sample and enter the codes written in italic into

lines 17 - 22.

17. [IO I [lo j

i 18 27 80

18. 112 I [I2 j

[ 18 27 77

19. [17 I [I7 1

i 15

20. il 1 il I

[ 27 120 1

21. t2 I 1.2 1

i 27 120 0

22. I3 I [3 I [ 27 64

23. [I201 11201

24. [I201 11201

i I

25. [I201 [I201

i I

26. [I201 [I201

i I

The codes 120 in lines 23 through 26 can be changed to reflect more pitch settings. We recommend that until you are more familiar with using special function codes, you use just the six we have defined.

When you have finished, press RETURN. You will be

transferred to the Edit Line Spacing screen. Do not change

these codes. They define how many lines per inch the printer uses. Press RETURN to transfer to the Edit Font Support screen.

Change all of the entry fields to Option 2 (Control Code Support) on the Edit Font Support screen. Also, make changes in the other fields to look like the figure shown below. Enter the codes written in italic into lines 41 - 50.

41. Bold/Shadow Face Support [21

42. Single Underline Support (21

Using Character (95 I

43. Double Underline Support [21 Using Character LO 1

44. Overstrike Support

[21 Using Character from

45. Special (Color1 Support [21 System Parameters

46. Sub/Superscript Support

i21

47. Will underline retain font (Y) or be normal font (N)?

IN1

49. Start double underline [ I

50. After double underline [

When you have finished, press RETURN and the Edit Font Sequences screen will be displayed. Here you will define print control codes for use in your documents. As with the pitch settings, ASCII decimal values are used that correspond to the print function assigned to each control key. Table 3-l shows the current control function, the print function we will assign to it and the keyboard keys used.

Table 3-1

EasyWriter II control keys

Enter the codes written in italic into lines 51 - 66.

51. Normal to Bold

52. Bold to Normal

53. Normal to Shadow

54. Shadow to Normal

55. Normal to Underline

56. Underline to Normal

57. Normal to Double

58. Double to Normal

59. Normai to Overstrike

60. Overstrike to Normal

61. Normal to Special

62. Special to Normal

63. Normal to Subscript

64. Subscript to Normal

65. Normal to Superscript

66. Superscript to Normal

i27 72 [ 27 72 [ 27 52 [ 27 53 [ 27 45 2 [ 27 45 0 [ 27 87 1 [ 27 37 0 [ 27 69

[ 27 70

i 27 52 27 45

[ 27 53 27 45

[ 27 83 1

[ 27 84

( 27 83 0

[ 27 84

I I I I I I I 1

I 1 I 0 I

When you have finished, press RETURN. You’re done!

You will be transferred out of the Reconfigure Type B Printer

function and back to the System Functions Menu.

n A sample printout with EasyWriter II

Let’s look at a short example to demonstrate how pitch settings and print control keys can be used in a document. The example below shows the use of expanded and italic prints used in combination with condensed and pica pitch settings. Use your EasyWriter II program hands-on and type the example below.

SUBJECT: ORDERING STATIONERY SUPPLIES

I would like to place an order for stationery supplies from your mail order catalog. Enclosed is my order form and a check for $247.67. Please process this order as soon as possible. Thank YOU.

With the cursor under the “S” in “SUBJECT”, set the print pitch in the ruler line to condensed width pitch. Name the ruler line “condensd” (without the quotes) and change the character pitch to 17 and the line spacing to 6. To make the subject title expanded, use the ALT and = keys (in the .line mode) to highlight the line.

Now, change the pitch setting in the next line to pica by setting a new ruler line: Ruler Name - pica; Character Pitch

- 10. Use the print control key S (for italic) to highlight the second sentence in the paragraph. Move the cursor to the “E” in “Enclosed” and (in the sentence mode) use the ALT and S keys to highlight the sentence. (You’ll have to press S twice to get the .67.)

At the end of the document, reinitialize the printer to its default settings with a new ruler line using the Master Reset code. Ruler Name - reset; Character Pitch - 3.

Print the document. Your printout should look like this:

SUBJECT : ORDERING STATIONERY SUPPLIES

I would 1lL.e to place an order for

c,tationery supplies from your

mall order catalog. Enclosrd is my order form and a check for

6247.07.

F'leac,e process thus order as soon as possible. Thank

you.

The subject title will print in expanded condensed characters which are twice the width as standard condensed characters. The sentence in the paragraph is printed in italic pica print. The last ruler line will reinitialize the printer. (See the general concepts section for more details on master reset.) This is just one example; you should be able to apply most of the function codes to the setup used here.

n Redefining your own print pitches

If you want to define a new print pitch (Edit Pitch Table), enter your function code to choose the print you want. For example, if you find yourself frequently using italic print for large blocks of text in pica pitch, you can combine italic and pica pitch to define italic pica and use it in the ruler line of

your document The ASCII code sequence would be 27 80 27 52 to print italic pica pitch.

n Redefining your own print control keys

The ASCII codes to redetine the print control keys (Edit

Font Sequences) are pretty straightforward. There are indi-

vidual ASCII decimal values to turn on and off different prints.

You want to affect that aspect but not the print pitch itself.

Leave that for your document ruler line. Remember, all the codes can be found in Appendix C of this manual.

Also, keep in mind that print control keys can be combined in your document such as boldface and underline. EasyWriter II uses three methods of highlighting on the display screen. It highlights, underlines and displays reverse video characters. You cannot combine print control functions that use the same method of highlighting.

For example, in our definitions, underline and expanded prints are both displayed as underlined on the screen. Whichever function you use last will cancel out any previous modes.

USING THE PRINTER WITH WORDSTAR

(Note: If you have not read the “General Concepts” section in this chapter, you should do so before continuing.)

. This printer supports many of the standard WordStar

printing capabilities without requiring any changes. You can:

1. Print documents from the No-File Menu.

2. Use dot commands except for lines per inch and characters per inch.

3. Print boldface, underline, double-strike, strikeout, superscript and subscript characters as well as use print pause.

4. Select and print variable information for merge letters, etc.

H User-defined print commands

There are several CONTROL-P (^P) commands that auto-

matically work with this printer and require no changes.

They include:

n PS Underscore

h PB Boldface

^PD Double-strike

^PX Strikeout

h PT Superscript

^PV Subscript

/r PC Print Pause

It is also possible to define the ^PA (alternate pitch) command to change the print pitch of your document. The WordStar User’s Manual fully describes the use of these ^P functions. You should refer to your manual if you need help with them.

There are four alternate “P codes that can be defined during the installation of your WordStar program to perform other printer functions. They are

^PQ, ^PW, ^PE, and ^PR. The process of defining ^P commands is called “patching” and is a fairly complicated process. Once you have successfully defined these codes, they are inserted in your text exactly like other ^P commands. If you wish to use them, refer to the WordStar User’s Manual for instructions or contact your dealer for assistance.

Perhaps the most useful user-defined ^P command is ^PE. If you define this as an escape (ASCII code 27), you can then access nearly all of the advanced features of this printer.

Without this patch, you cannot place an escape in the WordStar document and subsequently, you are limited to using WordStar’s repertoire of print functions. A shame when you have a powerful printer!

USING THE PRINTER WITH LOTUS l-2-3

Lotus is one of the integrated software packages that include

a spreadsheet, a database manager and graphics. We will look

at how to print Lotus l-2-3 spreadsheet.

Lotus l-2-3 uses the /Print command to print spreadsheets. When you enter /P, a menu appears that presents you with a number of choices. Lotus l-2-3 gives you a lot of flexibility in printing spreadsheets through this menu, but you have to define the range to print. All the other items have default values

that make getting started easy.

If you do change several of the things listed in the /Print menu, Lotus l-2-3 will remember the selections that you have made and use them each time you print the spreadsheet. They are even saved with the spreadsheet so that they will be the same the next time that you use the spreadsheet.

You can specify the range to print in all the normal ways: by pointing, by typing the cell addresses of the endpoints, by entering a range name, or by using the F3 key to point to a

range name.

After you have specified a range to print, and changing any of the other options that you wish, start printing the spreadsheet by selecting the Go option. Lotus l-2-3 will split the spreadsheet into sections to fit onto pages if it won’t all tit on one page.

Let’s look at some of the other options on the /Print menu, and see how they add to the flexibility of printing spreadsheets.

The Line option advances the paper one line. Use this to put space between different sections of your spreadsheets when you print them. The Page option advances the paper to the top of a new page. Use this option to start on a new page.

Selecting the Align option tells Lotus l-2-3 that you have moved the paper to the top of a new page. Use this option after using the Paper Feed key to move the paper or after inserting a new single sheet of paper.

The Clear option allows you to clear any or all of the other options that you have selected. The Quit option ends the /Print

command and returns you to Ready Mode.

Selecting Options from the /Print menu presents you with some additional page format selections.

You can add Headers or Footers to each page of your output. A header is a line that prints at the top of each page, while a footer is a line that prints at the bottom of each page.

Lotus l-2-3 has three characters that perform special func-

tions when they are included in a header or a footer. You can

include sequential page numbers on each page by including

the # character where you want the page number to print (For example, Page #).

The current date will be printed if you include the @; character

in a header or footer. (For example: As of (4.)

You can direct sections of headers and footers to the left,

right, or center by using the / character. Each header or footer is divided into three sections; Left, center and right. The / character shows the limits of these sections. So to print a header with the date to the left, a title in the center, and a page number to the right, the header might look like this:

@ I Spreadsheet Title I Page #

And, on August 12, 1986, the results might look like this:

12-Aug-86 Spreadsheet Title

Page 1

Another of the selections under Options is Setup. This se-

lection allows you to create a setup string that will be sent to the printer before each section of the spreadsheet is printed.

You can include non-printing codes in the setup string by using a backslash (\) followed by a three digit number that consists of the decimal ASCII value for the code that you wish to send (with leading zeros if required). For example, to print a worksheet in condensed print, use the setup string \015. This sends ASCII 15 which is the code for condensed printing. The following table shows how many character columns will tit with different printing widths, and the setup string to get each width.

Table 3-2

Print columns on a page with Lotus l-2-3

USING THE PANEL MODES

At the end of this chapter, we’ll explain about the “Panel” mode, which is a powerful function of the printer. Some commercial software does not support defining your own selections. In this case use the “Panel” modes.

Selection of any of the Panel Modes at power-on ensures that your choices remain in effect until you turn the power off. This means that the printer will ignore any codes sent by the software that you are using. The Panel Modes allow selection of the following printing attributes:

Key

Type of Panel mode

Mode

Print quality (draft or NLQ) Print Pitch Print pitch TOF

Italic printing

pitch panel mode

Italic panel mode

panel mode

Figure 3-1. The Panel Modes - hold down keys while turning power

on.

If you want to set only one attribute, for example, the Print Pitch Panel’Mode, press the PRINT PITCH key on the control panel when you turn on the power. After a second, you will hear a beep, and the ON LINE indicator will glow. To change the pitch to another, press the ON LINE key, select the desired pitch, and press the ON LINE key again. The Print Pitch Panel Mode is now set to the pitch of your choice.

Similarly with Draft and NLQ - turn on the power while holding the MODE key, and wait for the ON LINE indicator glow. If you want to change the character, press the ON LINE

key, press the MODE key once again to make your choice, and press the ON LINE key again. Remember that you may select which print mode is the standard one by setting DIP switch 2- 1.

To select the Italic Panel Mode, press the TOF key while

turning on the power.

More than one attribute may be set in this way. For example, if you wish to set both print pitch and print quality, press BOTH the PRINT PITCH and MODE keys when turning on the

power, and after the ON LINE indicator glows, make further

selections as necessary.

ADVANCED PANEL FUNCTIONS

The printer has the capability to do some basic formatting from the control panel, as well as move the platen by precise amounts.

The following formatting and platen movements

may be performed from the control panel.

Key

Functions

On Line & Paper Feed

Forward micro-feed

On Line & T6F

Print Pitch & TOF

Mode & TOF

Mode & Paper Feed

Reverse micro-feed Top of form setting Setting of left margin Setting of right margin

**: Hold down

*: Press

Figure 3-2. You can set many functions by the combinations of the

control panel keys in the Off Line mode.

n Setting print start position

When you want to align the print start position, you can set it by the micro-feed operation with the control panel, instead of turning the platen knob manually.

1. Set the Off Line mode by pressing the On Line key.

2. While holding down the On Line key, press one of the following keys.

Paper Feed key - Forward micro-feed TOF key - Reverse micro-feed

3. When you can set the print start position, release the Paper Feed key or the TOF key first, then release the

On Line key.

n Setting the top of form

When you turn on the printer, the top of form is automatically set to the current position. If you want to change the position, you can reset it by the following procedures.

1. Set the Off Line mode by pressing the On Line key.

2. While holding the Print Pitch key, press the TOF key. Your printer acknowledges the new top of form with the sound of deep.

n Setting the left and right margins

As you’ll learn in Chapter 5, you can set the left and right

margins with the control codes. In addition, you can set them

*manually just like a typewriter by the following procedures.

1. Set the Off Line mode by pressing the On Line key.

2. While holding the Mode key, press one of the following keys.

TOF key - Left margin set Paper Feed key - Right margin set

3. While holding the two keys, the print head moves across the page step-by-step.

4. When the print head goes to the position where you want to set margin, release the two keys. So the printer

acknowledges the margin with the sound of beep.

MEMO

CHAPTER 4

PRINTING WITH BASIC

Subjects covered in Chapter 4 include -

l Listing BASIC programs on the printer l How a program prints things l Control codes, escape codes, and command syntax

l Selecting the right software mode l Near letter quality (NLQ) characters l Fixed and proportional character spacing l Special printing -

Printing in italics Underlining and overlining

Superscripts and subscripts Boldface and emphasized text Mixing print modes.

To show you how to control your printer from a program, we have chosen BASIC because it is easy to learn and easy to use. Also, more personal computer users program in BASIC

’ than in any other language.

The rest of this manual will show you a little BASIC -just enough for you to use your printer. We’re not going to try to make you an expert programmer, though, only get you started. There are many excellent books that will teach you BASIC,

so if you discover that you like to program you should have no trouble learning more about it.

SOME BASICS OF BASIC

n First steps

The first things that a beginner learns to do are to list a

program and to print a character string. Certainly these are

the easiest operations one can do, but even they may depend on what computer you have. In Microsoft BASIC, we can list all the steps in a program by entering LIST. This lists them on the CRT screen; if we want to print them on a printer, we prefix the command with an L (enter LLIST).

The Microsoft BASIC command for outputting information is PRINT. Like the LIST command, this displays the information on the CRT screen so we have to add an L (+ LPRINT) if we want to use the printer. Just put whatever you want to print between quotes and after LPRINT (anything enclosed in quotes is called a character string). For example, we would use LPRINT “Hello!” to output “Hello!” to the printer. We’ll see later how to LPRINT more than just character strings.

We started with Microsoft BASIC because it is the most widely used version of BASIC. The programs in this manual are written in Microsoft BASIC so they should run on most computers. But if strange things happen when you try to run a program, check the BASIC manual that came with your computer.

Let’s consider Apple II computers for a minute. These popular computers use their own brand of BASIC. To use an Apple II, enter the following -

PR#l

LIST

PRINT “Hello!”

PR#O

PRO0

The PR#l tells the Apple to send everything to the printer, the LIST or PRINT command sends it, and the PR#O returns output to the screen.

Now that we know how to address the printer, let’s try listing a BASIC program. We will load a program into memory ready to program printer operation --just as soon as we learn a little bit about the ASCII codes.

n ASCII codes and the CHRS function

You can talk to your computer in BASIC, but your computer and your printer talk to each other in what are known as ASCII

codes. In the ASCII code, each number from 0 to 255 has a particular meaning - 36, for example, makes the printer print

a dollar sign. Some numbers cause the printer to do other things, too. For instance, sending a 7 sounds the printer’s bell.

Taken together, these numbers and their meanings make up the ASCII code (pronounced ask-key), which stands for the American Standard Code for Information Interchange. There are ASCII codes for all the letters of the alphabet (upper case and lower case), 0 to 9,,most punctuation marks, and some (but not all) of the functions of the printer.

There are a number of different ways to represent an ASCII code, depending on how you are using it. For example, the ASCII codes for the upper case letter “A” are 65 (decimal) or &H41 (hexadecimal). Or you can just call it “A”. Appendix

B shows all of the ASCII codes.

BASIC uses the CHR$ function to represent ASCII characters and many functions. To print the letter “A” we would enter LPRINT CHR$(65). To make the printer’s bell sound, we would enter LPRINT CHR$(7). In general, we print a character by entering LPRINT CHR$(ASCII code) to the printer.

We can also use hex ASCII codes. Although we use only decimal ASCII codes in this manual, in some applications it will help if you understand what a hex code is. “Hex” is short for hexadecimal and refers to a base-16 number (the numbers we use in everyday life are base 10). Since the hex system needs

16 digits, it uses the numerals 0 through 9 and also the letters

A through F. In BASIC programs, you can always tell that

a number is in hexadecimal by the “&H” immediately preceding it. The ASCII code for the letter “A” (65 in decimal) is &H41 in hex.

n Control codes

ASCII codes with values of 32 or less do not correspond to

the keys on the keyboard. These codes control many of the printer’s functions, so we call them control codes. To enter a control code from the keyboard, we have to press two keys

at the same time - the “control” key and one other. The other

key determines what code is sent-pressing the control (CTRL)

key and A sends ASCII code 1, CTRL B sends ASCII code

2, and so on.

Your printer has a lot of control codes to let you do some useful things. Let’s try one that we’ve mentioned several times already:

10 ’ Demo of ASCII code 20 LPRINT CHR$(7)

30 END RUN

That’s the printer’s bell (we call it that even though it sounds like a buzzer). We’ll learn more about it later - we just wanted to show you a control code that would get your attention right away!

There are four common ways of referring to a control code: the name of the code or its abbreviation, the decimal ASCII value, the hexadecimal ASCII value, and the “CTRL-” value. For example, the ASCII code that causes the printer to advance the paper one line is decimal 10. This code may be referred to by any of the following:

line feed - the name of the code

< LF > - its abbreviation

ASCII 10 -

its decimal value

ASCII &HOA - its hexadecimal value (the &H signifies

hex) CHR$( 10) - the way it’s used in BASIC CTRL-J -

the way you send it from a keyboard

Of course, most of the time we don’t need to bother with

these. The computer is smart enough to know that when we press the “A” key we want to print the letter “A” - it takes care of all the intermediate steps.

Appendix B is a table that shows the various names for each code so you can convert back and forth. The microcomputer world is not very consistent in describing ASCII codes, so it’s important that you have a basic knowledge of them.

n The escape codes

Back when the ASCII system was set up, computer equipment was relatively simple and thirty-three control codes were considered sufficient at the time. The American Standards people realized that eventually more control codes would be

needed, so they included the escape (ESC) code to allow almost any number of additional codes to be defined when they became necessary.

ESC allows us to “escape” from the ordinary set of control codes so we can specify additional functions and other information needed for a printer function. In this manual, we’ll write the ESC code inside broken brackets, like this- < ESC > .

< ESC > - decimal 27 - is always followed by at least one

other number; it is never used alone. The whole series of related

numbers is called an escape sequence.

H A note on command syntax

Because the readers of this manual will be running such a wide variety of applications on so many different computers, we can’t show the exact way of sending codes to the printer for each one of them. Instead, as we introduce you to each new command, we will show the commands as in this example:

<ESC> “W” 1

This command turns on expanded printing. < ESC > , as

we mentioned earlier, is the escape code (which is ASCII code

27). A letter or number in quotes (such as the “W” above) means that the character should be sent to the printer, but without the quotes. In our example, you should send a capital W following the escape code. In BASIC, you could do this

in a couple of ways: by sending the character itself (e.g.

LPRINT “W”;), or by using the CHR$ function to send the ASCII code for the character (e.g. LPRINT CHR$(87);).

Many of printer commands end with a 1 or 0. When shown

as in the above example (i.e., no quotes and no “CHRV’), you

can use either ASCII code 1 (i.e., CHR$(l)) or the character

“1” (which is ASCII code 49). The same principle applies to

commands ending with 0.

So for our example above, any of these BASIC statements

will have the same result:

. LPRINT CHR$(27);"W";CHR$(lJ

LPRINT CHR5(27);"W";CHR$(49)

LPRINT CHR$(27);"Wl"

Even though there are many commands that require the use of ASCII code 0 (the <NUL> character); the number “0” (zero or ASCII code 48) cannot be substituted. In these cases, instead of an unadorned 0 we will show CHR$(O) each time

these commands are referenced.

That’s it for the basics. You are now ready to learn how to use the many features of your printer.

n Selecting the right software mode

For this printer to correctly respond to control codes, you must make sure that you’ve set the DIP switches properly.

The rest of this manual discuss the various control codes to control this printer. You’ll tind that many features have different codes for either the Standard mode or the IBM modes.

The Standard Mode emulates the Epson FX-85 printer. IBM-G Mode emulates the IBM Graphics printer, and the IBM-P Mode emulates the IBM Proprinter. You can select one of these modes by setting DIP switches 2-2, and 2-3. (For details, please refer to the Appendix A.)

SOME SPECIAL KINDS OF TEXT

If you looked carefully at your printer’s self test, you probably noticed that it can print in italics. But that’s not all! Your printer can underline or overline characters, print superscripts and subscripts, and perhaps most exciting, print near letter quality characters.

n Near Letter Quality characters

This printer’s Near Letter Quality (sometimes abbreviated

as NLQ) character set is ideal, for correspondence and other

important printing, as it produces very high quality characters.

Normally, your printer prints draft quality characters. This

is adequate for most work and has the fastest printing speed.

For the final printout, try NLQ. The program below shows an example.

10 ’

Demo of NLQ character set

20 LPRINT CHR$(27);"xl"; 30 LPRINT "This line shows NEAR LETTER QUALITY!"

40 LPRINT CHR$(27);"xO";

50 LPRINT “This line shows standard print. ”

In this program, line 20 selects NLQ characters with < ESC >

“x” 1 command. Line 30 prints a sample before line 40 switches printer back to draft printing with an < ESC > “x” 0. When you run the program you should get this:

This line

shows NEAR LETTER QUALITY!

-I- i-1 j. 53 :1 :i r-i ES 5 t-i 13 PiI 5. 5 t a I? cl a IF cl

8, /_ 1. l-i t Y

Now turn off the power switch. After you turn on the power

switch while holding the Mode key down on the control panel, set the NLQ mode with the Mode key while in the Off Line mode. Then run the program again. You should get like this:

This line

shows NEAR LETTER QUALITY!

This line shows standard print.

As you can see, now the printout only contains NLQ characters. This is because we set the printer to the “Print Quality Panel” mode at power on, so the printer ignored the control codes to set or cancel NLQ characters. This is a very useful way to print NLQ characters if you are using a packaged software which does not support the NLQ character mode.

Table 4-l

Near letter quality commands

I Function

I Control code I

Near letter quality ON

< ESC > “x” 1 < ESC > “I” 2 (IBM-P mode only)

Near letter quality OFF

< ESC > “x” 0 < ESC > “I” 0 (IBM-P mode only)

H Italic printing

Italic letters are letters that are slanted to the right. Your printer can print all of its letters in italic as well as the roman (standard) letters you are accustomed to. Italics can be used to give extra emphasis to certain words. The command codes to turn italic on and off are shown in Table 3-2.

Table 4-2

Italic commands

Use this program to see italic characters:

’ Demo of italic and roman 20 LPRINT CHR$ (27) ; “4” ; 30 LPRINT “This line is in ITALIC characters.”

40 LPRINT CHR$ (27) ; “5”;

50 LPRINT “This line is in ROMAN characters. ”

Here is what you should get:

In this program, line 20 turns italic on with < ESC > “4”,

and line 40 turns italic off with < ESC > “5”.

Now, set the “Italic Panel” mode, as described in Chapter

3, then run the program again. You should get like this:

As you can see, this time the printer ignored the control codes

to set or cancel italic characters.

n Underlining and Overlining

Not only can your printer print all styles of printing in both

roman and italic, but it can underline and overline them too.

The control codes are shown in Table 4-3.

Table 4-3

Underline and overline commands

Function

Control code

Underline ON

<ESC> “-” 1

Underline OFF

<ESC> “-” 0

Overline ON

< ESC > “-” 1

Overline OFF

< ESC > “L” 0

It’s that simple. Let’s try it with this program:

10 ’

Demo of underlining and overlinins

20 LPRINT “Demo of “; 30 LPRINT CHR$(27) ; “-1”; 40 LPRINT “UNDERLINED” ; 50 LPRINT CHR$(27) ; “-0”;

60 LPRINT ” and I’; 70 LPRINT CHR$ (27) ; “-1”; 80 LPRINT “OVERLINED” ; 90 LPRINT CHR$ (27) ; “-0”;

100 LPRINT ” printing. ”

It should come out like this:

. In this program underline is turned on in line 30 with

<ESC>

“ - ” 1, and then off in line 50 with < ESC > “ - “0. The overline is turned on in line 70 with < ESC > “-” 1, and then off in line 90 with < ESC > “-” 0. There’s a new aspect to this program, though. The semicolons at the end of the lines told BASIC that those lines were to be continued. Therefore,

BASIC didn’t send a carriage return and line feed at the end of those lines. We just did this to illustrate that all these control codes can be used in the middle of a line. It’s easy to underline, overline or italicize only part of a line.

n Superscripts and subscripts

Your printer can print in two different heights of characters.

The smaller characters are called superscripts and subscripts

and are half the height of normal characters. Superscripts print

evenly with the tops of regular printing while subscripts print evenly with the bottom of regular printing. They are frequently used to reference footnotes, and in mathematical formulas.

Table 4-4 has the codes for using superscripts and subscripts.

Table 4-4

Superscripts and subscripts commands

Function

Control code

Superscript ON

< ESC > “S” 0

Subscript ON

< ESC > “S” 1

Super and subscript OFF

< ESC > “T”

Try this program to see them work:

10 ’

Demo of superscripts and subscripts

20 LPRINT "Look! 'I; 30 LPRINT CHR$(27);"SO"; 40 LPRINT “SUPERSCRIPTS ‘I; 50 LPRINT CHR$ (27) ; “T” ; 60 LPRINT “& ” ; 70 LPRINT CHR$ (27) ; “Sl”; 80 LPRINT “SUBSCRIPTS ‘I;

90 LPRINT CHR$ (27) ; “T”; 100 LPRINT “on one line. ”

Here line 30 turns on superscripts with < ESC > “S” 0. It’s turned off in line 50 with < ESC > “T”. Then between printing text, subscripts are turned on in line 70 with < ESC > “S” 1, and finally off in line 90. Again, everything prints on one line because of the semicolons.

CHANGING THE PRINT PITCH

In “printer talk,” the number of characters that can be printed in one inch is called the print pitch or character pitch. Normally, your printer is set for 10 characters per inch, which is called

I .;

: ~

. .

: -.

L..

pica (and is the same as the pica pitch on most typewriters).

This works out to 136 characters per line.

You can also print 12 characters per inch (elite pitch). This

gives you 163 characters per line.

You can set these pitches by using the Print Pitch key on the control panel manually, or by software as shown in the table below.

Table 4-5

Print Ditch commands

Pitch

Characters/inch

Pica

Elite

Control code

< ESC > “p” < ESC > “M” < ESC > “:” (IBM-P mode only)

Try this program to see how these two pitches work. Be sure

to set the printer to draft mode.

’ Demo of pica and elite pitches

20 LPRINT CHR$ (27) ; “M” ; 30 LPRINT “This line is ELITE pitch.”

40 LPRINT CHR$ (27) ; “P”; 50 LPRINT “This

line is PICA pitch (NORMAL) .‘I

When you run this program you should get this:

Thl.5. 11ne is EI..Ief’E pj.tch. ‘7 h j. .:;

1. 1 fi 13 :I. ‘s; F:’ :i i’:; 6 p i. i:. I: :?

( b.J !-:j fi, y! {:$ t., ) ,

Line 20 turns on elite pitch with < ESC > “M”. Line 30

prints the line at 12 characters per inch. The < ESC > “P” in

line 40 resets the printer to pica pitch and line 50 prints the line in pica pitch.

n Expanded print

Each of the print pitches can be enlarged to twice its normal width. This is called expanded print. Try this program to see how it works:

10 '

Demo of expanded print 20 LPRINT "Demonstration of 'I; 30 LPRINT CHR$(14); 40 LPRINT "EXPANDED"; 50 LPRINT CHR$(20); 60 LPRINT M printing." 70 LPRINT "Notice that 'I; 80 LPRINT CHR$(P4); 90 LPRINT "EXPANDED mode"

100 LPRINT "automatically turns off at the end

of a line."

Expanded print set with CHR$( 14) is automatically cancelled at the end of the line. This is convenient in many applications, such as for one line titles. Note that you didn’t need to put an < ESC > in front of the CHR$(l4), although < ESC > CHR$(14) works just the same.

You can also cancel one line expanded print before a carriage

return with CHR$(20), as done in line 50.

Sometimes you may wish to stay in expanded print for more

than one line. Change your program to this:

10 ’

Demo of permanent expanded.mode

20 LPRINT CHR$(27);"Wl"; 30 LPRINT "Permanent expanded" 40 LPRINT "mode stays on until" 50 LPRINT "it is ";

60 LPRINT CHR$(271;"WO"; 70 LPRINT "turned off."

Now the results look like this:

When you turn on expanded print with < ESC > “W” 1 it

stays on until you turn it off with < ESC > “W” 0.

Table 4-6

Expanded print commands

n Condensed print

Each of the print pitches also can be condensed to its normal width. This is called condensed print. Try this program to see how it works:

’ Demo of condensed print

20 LPRINT "Demonstration of "; 30 LPRINT CHR$(15); 40 LPRINT "CONDENSED"; ,50 LPRINT CHR$(lS);

60 LPRINT u printing."

Condensed print set with CHR$(l5) stays on until you turn

it off with CHR$(18). Note that you don’t need to put an

< ESC > in front of the CHR$(15), although < ESC >

CHR$(lS) works just the same.

Table 4-7

Condensed print commands

Function

Control code

Condensed ON

CHR$(15) or < ESC > CHR$( 15;

Condensed OFF

CHR$(18)

By combining expanded print and condensed print with the two pitches, this printer has eight different character widths available.

Enter this program to see how the print pitches, expanded print and condensed print can be combined:

10 ' Demo of various print pitches

20 LPRINT CHR$(l5); 30 LPRINT CHR$(27);"M"; 40 LPRINT "This line is CONDENSED ELITE pitch." 50 LPRINT CHR$(27);"P"; 60 LPRINT "This line is CONDENSED PICA pitch." 70 LPRINT CHR$(lB); 80 LPRINT CHR$(27);"M";

90 LPRINT "This line is NORMAL ELITE pitch." 100 LPRINT CHR$(27);"P"; 110 LPRINT "This line is NORMAL PICA pitch."

120 LLPRINT CHR$(27);"Wl";

130 LPRINT CHR$(15);

140 LPRINT CHR$(27);"M";

150 LPRINT "This line is EXPANDED CONDENSED ELITE."

160 <LPRINT CHR$(27);"P";

170 LPRINT "This line is EXPANDED CONDENSED PICA."

180 LPRINT CHR$(18);

190 LPRINT CHR$(27);"M"; 200 LPRINT "This is EXPANDED ELITE." 210 LPRINT CHR$(27);"P"; 220 LPRINT "This is EXPANDED PICA." 230 LPRINT CHR$(27);"WO"

240 END

Here’s what you should get from this program:

n Proportional printing

Have you ever looked closely at the printing books and magazines? Doesn’t it look nice? The main reason is that each character is given an amount of space proportional to its actual width. A typewriter (and most printers), on the other hand, give every character the same amount of space, no matter how wide it is. (Pica pitch, for example, gives a “w” and an “i” l/l0

of an inch each. Looking at these letters you see that a “w”

is two or three times as wide as an “i”.)

Well, you too can enjoy professional-looking proportional printing. You can turn proportional printing on and off with

the following commands:

Table 4-8

Prouortional commands

Function

Control code

Proportional ON

< ESC > “p” 1

’ Proportional OFF

< ESC > “p” 0

Try this program to see how the proportional spacing works.

’ Demo of proportional printing

20 LPRINT CHR5 (27) ; “M:’ ; 30 LPRINT “This line is NORMAL ELITE printing.” 40 LPRiNT CHR$(27) ;“pl”;

50 LPRINT “This line is PROPORTIONAL ELITE.”

60 LPRINT CHR5 (27) ; “P” ; 70 LPHINT “This line is PROPORTIONAL PICA. ”

80 LPRINT CHR$(27) ;“pO”;

90 LPRINT “This line is NORMAL PICA printing.”

100 END

When you run this program you should get this:

Line 20 selects the elite pitch and line 40 turns on the proportional printing with < ESC > “p” 1. Line 50 prints a line with proportional elite pitch. Then, line 60 selects the pica pitch, so that line 70 prints a line with proportional pica pitch. Finally, line 80 resets the proportional printing and line 90 prints a line in normal pica pitch.

NOTE: When you set the “Print Pitch Panel” mode by the

Print Pitch key on the control panel at power-on, these control codes related print pitches except expand print mode are ignored.

MAKING WORDS STAND OUT

Your printer has good print density when it’s just printing normally. But sometimes you may want something to stand out from the rest of the page. This printer provides two ways to do this: boldface and emphasized print. Both of these go over the characters twice, but they use slightly different methods to darken the characters. Let’s try them and see what the difference is.

The following table shows the control codes for getting into and out of boldface and emphasized modes.

Table 4-9

Print emphasis commands

Function

Control code

Boldface ON

< ESC > “G”

Boldface OFF

< ESC > “H”

Emphasized ON

< ESC > “E”

Emphasized OFF

< ESC > “F”

Try them now with this little program:

I_, ,‘:

‘. :

10 ’

Demo of boldface and emphasized 20 LPRINT CHR$(27) ;“G”; 30 LPRINT “This line is BOLDFACE printing.” 40 LPRINT CHR$ ( 27 1 ; “E” ;

50 LPRINT “This line is BOLDFACE and EMPHASIZED.” 60 LPRINT CHR5 (27) ; “H” ; 70 LPRINT “This line is EMPHASIZED printing.” 80 LPRINT CHR5(27) ;“F”; 90 LPRINT “This line is normal printing. ” 100 END

Run this program. The results will look like this:

This

line is FOLDFACE printing.

This line is BOLDFACE and EMPHASIZED.

This line is EMPHASIZED printing. 7-h i. '5 I. :I_ r-i E

i .:j ri D f ifi 3 I

p t- i. n t i r-1 g y

Line 20 turns on boldface with < ESC > “G” and line 30

prints a line of text. In line 40 emphasized is turned on with

-=c ESC > “E”.

Line 50 prints a line of text in boldface and

emphasized. Line 60 then turns boldface off with < ESC > “H”

so that line 70 can print in emphasized only. Finally, line 80

turns emphasized off, so your printer is set for normal printing.

Look closely at the different lines of printing. In the line

of boldface printing each character has been printed twice,

‘and the paper was moved up slightly the second time they

were printed. In emphasized printing, the characters are moved

slightly to the right the second time the printer prints. The second line combined both of these so that each character

was printed 4 times.

MIXING PRINT MODES

We have learned how to use the various print modes individually and together. Now we’ll see how to combine them more efficiently.

You have at your disposal a unique command that lets you choose any valid combination of print modes and pitch. This is the Master print mode command. It looks like this:

< ESC > “!” n

Here, the value of n defines the print style to be selected. The value of n can range from 0 to 255, which is the range

of values that can be stored in one eight-bit byte. If you look

at each bit in this byte, you’ll find that each one represents a printing style variation. Adding the binary values of the selected bits gives the value of n for a particular combination of print

styles.

Table 4- 10 shows the decimal values of the bits in the Master

Print byte. To calculate the value n for a particular combination

of printing styles, just add the decimal values of the features

that you want to combine.

Table 4-10

Values of mixing print styles for Master Print

For example, if you want to select elite expanded boldface

print, you would calculate the value of 12 like this:

Elite

Boldface

Expanded

n= 49

The command would look like this:

CHR$(27);“!“;CHR%(49)

To better understand the way the print modes work, consider that each mode except pica (pica is the default) has a separate switch that can be turned on and off via software. Once the switch is on, it stays on until turned off. However when two modes that conflict are turned on at the same time, the printer must choose which one to use.

For example, suppose you turn on both Condensed and

Emphasized modes.

These cannot combine, so the printer must make a choice; in this case, the printer chooses Emphasized.

Summary notes

1) Pica is the default pitch and is active when Elite is turned off.

2) When two modes conflict, the one of lesser priority bit-wise is cancelled. For example, Condensed and Emphasized cannot be printed at the same time.

printing is Emphasized.

3) Elite cancels Emphasized.

4) Underline, Italics, and Expanded modes combine with any print modes.

MEMO

CHAPTER 5

FORMATTING TEXT

Subjects covered in Chapter 5 include -

l The carriage return and line feed l The amount of space between lines l Moving to the next page l The number of lines on a printed page l Horizontal and vertical tabs l Setting margins-left, right, top and bottom l Centering and aligning

Chapter 4 showed us the basic techniques for using the printer. Now we’re ready for the more advanced ones. We’ll concentrate on changing the appearance of the page to suit

our needs.

LINES AND LINE SPACING

I Starting a new line

Up until now the only time we have thought about printing

on a new line is when we didn’t want it to happen. We learned that putting a semicolon (;) at the end of a BASIC line will not end the line of printing. So somehow, the computer tells the printer when to end one line and start another.

There are two codes that are used to end one line and start

another. They are carriage return (CHR$( 13)) and line feed (CHR$(lO)). Like the’escape codes, they have been given abbreviations which you’ll find many texts (including this one):

<CR> and < LF > . The codes are simple, but their action is a little confusing (especially with BASIC). Let’s begin with the carriage return. Each time the printer receives a CHR$( 13)

it returns the print head to the left margin. It does not advance the paper (if DIP switch l-5 is on; see below).

Line feed is more complicated. Each time the printer receives a CHR$(lO) it both advances the paper one line and returns the print head to the left margin, ready to start a new line.

Now to add a little confusion-most (but not all) versions of BASIC add a line feed (CHR$( 10)) to every carriage return (CHR$( 13)) they receive.

If your version of BASIC doesn’t

do this, then you should turn DIP switch l-5 off so that your

printer will add the line feed for you. When you have DIP switch

l-5 off the printer will do the same thing when it receives a

carriage return as it does when it receives a line feed.

In addition, when you are using the printer with the IBM-P

mode, you can control these functions with control codes. The

< ESC > “5” 1 command sets the printer to add a line feed

to every carriage return received. The < ESC > “5” 0 command

cancels this function.

If you find that your printer double spaces when it should single space, then you probably need to turn DIP switch l-5 on.

n Reverse line feeds

Your printer can move the paper up or down. The unique tractor design allows the paper to be fed in either direction without jamming. This allows you to move around the page at will. You can use this feature to print several columns of textsside by side, or to print a graph and then move back up and insert descriptive legends. As you experiment you’re bound to come up with more uses!

The simplest form of reverse paper feeding is a reverse line feed. The code is < ESC > < LF > , which causes the paper to move down (in effect, moving the printing up) one line. A “line” used in a reverse line feed is the same size as a line in a regular line feed (this is normally l/6 inch). When you change the line spacing (which you’ll read about next), both forward and reverse line feeds change.

Table 5-l

Line feed commands

Function

Control code

Return print head to left margin CHR$(13)

Advance paper one line CHR$( 10)

Reverse paper one line < ESC > CHR$( 10)

n Changing the line spacing

When you turn your printer on, the line spacing is set to 6 lines per inch. This is fine for most printing applications, but when you want something different, the printer makes it easy to set the line spacing to whatever you want.

Try this program to see how easy it is to change the line

spacing:

NEW

’ Demo of line spacing

20 FOR I=1 TO 25 30 IF I-13 THEN 60 40 LPRINT CHR$(27);"A";CHR$(I); 50 LPRINT "THIS LINE SPACING IS SET TO"; I

60 NEXT I

70 LPRINT "LINE SPACING IS SET TO l/6 INCH (NORMAL)." 80 LPRINT CHR$ (27) ; "2" 90 END

Line 40 changes the line spacing. The command < ESC > “A” CHR$(n) changes the line spacing to n/72 of an inch. The loop that is started in line 20 increases the value of n (the variable I in this program) each time it is executed. So the line spacing increases as the program continues. Line 30 just shortcuts the loop when I = 13, since BASIC won’t let us send CHR$(13) without adding an unwanted CHR$(lO) to it. Finally, the < ESC > “2” in line 80 resets the line spacing to 6 lines per inch. This is a shortcut that is the same as < ESC >

“A” CHR$( 12).

This is what you will get:

If you run this program with DIP switch 2-2 off (IBM mode),

you cannot get the printout as shown above.

The < ESC > “A” CHR$(n) command in the IBM mode only defines the line spacing as n/72 of an inch; the < ESC > “2” command changes the line spacing to the amount defined by the previous < ESC > “A”.

For the IBM mode, you need to change the following lines in the previous program as shown below:

40 LPRINT CHR$(27) ;"A";CHR$(I);CHR$(27);"2";

80 LPRINT CHR$(27);"A";CHR$(12) ;CHR$(27):"2"

You may wonder why l/72 of an inch was chosen as the increment for the line spacing command. There’s a good reason: the dots that the printer makes are l/72 inch apart. So this means that you can vary the line spacing in increments as fine as one dot - unless you want finer spacing, in which case you may use one third dot spacing.

The < ESC > “3” CHR$(

)

n command sets the line spacing in increments of l/216 inch. Change line 40 in your program to this:

40 LPRINT CHR$(27);“3”;CHR$(I);

and run the program again. Now the results will look like

this:

[... 1 b.1 t’:: Fi F’ IQ 1:: 1 tq G

1 !Z

g, lj;: “j- “I’ Cl

:j_ ;’ &

c, p.4 f:::! ::: r” :A [.., ) I(

The program works just the same as before, but the line

spacings are just one-third what they were. This is because

< ESC > “3” CHR$(n) sets the line spacing to n/216 inch.

If you run the program with DIP switch 2-4 set off under the Standard.mode, you’ll get a different result, as shown below. When DIP switch 2-4 is off, < ESC > “3” CHR$(n) sets the line spacing to n/144 inch, instead of n/2 16 inch.

Table 5-2 shows all the line spacing commands, including

several “shortcut” commands for commonly used line spacings.

Table 5-2

Line spacing commands

Function

Control code

Set line spacing to l/S inch

< ESC > “0”

Set line spacing to 7/72 inch Set line spacing to l/6 inch Set line spacing to n/72 inch

< ESC > “1” < ESC > “2” (Standard mode only:

< ESC > “A” CHR$(n)

(Standard mode only]

Define line spacing to n/72 inch < ESC > “A” CHR$(n)

(IBM mode only)

Use

< ESC > “A” definition

< ESC > “2” (IBM mode only)

Set line spacing to n/216 inch

< ESC > ‘$3” CHR$(n) One-time line feed of n/216 inch < ESC > “J” CHR$(n) One-time reverse line feed of

< ESC > “j” CHR$(n) n/216 inch

H Moving down the page without a carriage return

So far, all the commands that move the paper also move the print head back to the left margin. Normally this is what you want. Sometimes, though, you may wish to move down the page without moving the printhead back to the left mrgin. The following commands do just that.

. .

The < ESC > “J” CHR$(n) command causes the printer to make one line feed of n/21 6 inch, but does not change the setting of the line spacing. Try this program to see how it works:

NEW

’ Demo of one-time line feeds

20 LPRINT “LINE NUMBER 1.” 30 LPRINT “LINE NUMBER 2. ‘I; 40

’ One-time line feed

50 LPRINT CHR$(27) ;“J”;CHR$(lOO) ;

60 LPRINT “LINE NUMBER 3.” 70 LPRINT “LINE NUMBER 4. ”

80 END

Here is what your printer will produce:

The < ESC > “J” CHR$( 100) in line 50 changes the spacing to 100/216 inches for one line only without moving the printhead. The rest of the lines printed with the normal line spacing. Notice that both line 30 and line 50 end with semicolons. This prevents the normal line feed from occurring.

’ The < ESC > “j” CHR$(n) command works the same way

except that the paper moves in the opposite direction. Try this

simple change to your program to see the difference.

’ One-time reverse line feed

50 LPRINT CHR$(27);“j”;CHR$(lOO);

PAGE CONTROL

Now that we have seen how to control line spacing, we can go on to page control - positioning the printing on the page and adjusting the paper length.

n Form feed

The simplest forms control code is the form feed. Form feed (or < FF > ) is CHR$(12) and causes the printer to move the paper to the top of the next sheet. Try it by changing lines 40 and 50 to this:

40 ’ Form feed

50 LPRINT CHR$(12);

Before you run the program, turn your printer off and adjust the paper so that the top of the sheet is even with the top of the ribbon guide on the print head, then turn the printer back on. If you don’t remember how to do this, review Chapter 2. When you run the program, the results will look like this:

0 I

L.INE NUMBE~Fi :I, . LINE NUMBER 2.

0 /

---;______ --------_

L. 1 I’Jf’ /‘slUM&[:R 2;

0 / LJNli NUMBER 0:

The form feed (CHR$(12)) in line 50 caused the printer to

move to the top of a new page before printing the last two lines.

n Reverse form feed

Just as your printer can perform a reverse line feed, it can do a reverse form feed. This code moves the paper so that the print head is positioned at the top of the current page. This can be used, for example, to print text in a multi-column magazine format; print the first column, then reverse form feed

back to the top of the page to start the second column. The code for reverse form feed is easy to remember: < ESC >

<FF>.

Table 5-3

Form feed commands

Function

ontrol code

Advance paper to top of next page

CHR$(12)

Reverse paper to top of current page < ESC > CHR$( 12)

1 Sets,the top of form to the current 1 position

1 < ESC > “4”

,TTxXf n

(mlvl-r mode only)

n Changing the page length

You may have some computer forms that are not 11 inches high. That’s no problem, because you can tell your printer how high the forms are that you are using. There are two ways to do this; set the Form Length switch to your form’s length before turning on the power, or use one of the two commands shown in this table.

Table 5-4

Form length control

Function

Control code

Set the page length to n lines

< ESC > “C” CHR$(n)

Set the page length to n inches

< ESC > “C” CHR$(O) CHR$(n)

Let’s set up a 7 inch high form length, which is typical of

many computer checks. The following program will do it.

NEW

’ Demo of variable form lengths

20 LPRINT CHR$(27);"C";CHR$(O);CHR$O;

30 LPRINT "PAY TO THE ORDER OF:"

40 LPRINT CHR$(12); 50 LPRINT "PAY TO THE ORDER OF:" 60 END

This program should print

“PAY TO THE ORDER OF:” twice, and they should be 7 inches apart. Line 20 sets the form length to 7 inches.

After line 30 prints, line 40 sends a form feed advance the paper to the top of the next form. Line 50 then prints its message.

I ‘i

After you have run this program, turn off the printer and adjust the top of form position. When you turn the printer back on the page length will reset to its normal setting (usually

11 inches).

TOP AND BOTTOM MARGINS

Some programs don’t keep track of where they are printing on the page. This causes problems when you get to the bottom of a page because these programs just keep on printing, right over the perforation. This makes it very hard to read, especially if a line happens to fall right on the perforation.

The printer has a solution to this predicament. This printer can keep track of the position on the page, and advance the paper so that you won’t print too near the perforation. There are two commands to do this. One controls the space at the top of the page (top margin) and the other controls the space at the bottom of the page (bottom margin). The control codes are given in the following table:

Table 5-5

Top and bottom margin commands

Function

Control code

Set top margin to n lines

-c ESC > “r” CHR$(n)

Set bottom margin to n lines

< ESC > “N” CHR$(n)

Cancel top and bottom margins

< ESC > “0”

In both cases the value of n tells your printer how many lines to skip, although there is a slight difference in the usage. When you set the top margin with < ESC > “r” CHR$(n), the value of y1 tells the printer what line to start printing on. When you set the bottom margin with < ESC > “N” CHR$(n), the value of 12 tells the printer how many blank lines should be left at the bottom of the page.

Let’s try a simple application to see how these margins work. Enter this program, which will print 150 lines without top and bottom margins.

' Demo of top and bottom margins

60 LPRINT CHR$(12);

: ' form feed 70 FOR I=1 TO 150 80 LPRINT "THIS IS LINE";1 90 NEXT I

110 LPRINT CHR$(12);

: ' form feed

120 END

When you run this program it will print 150 lines right down

the page and across the perforations. When it’s done line 110

sends a form feed to advance to the top of the next page.

Now add the following lines to your program. (Don’t forget

the semicolons or you won’t get quite the same results that

we did.)

' Leave 6 blank lines at the bottom of page

30 LPRINT CHR$(27);"N";CHR$(6);

' Start top of page at line 6 50 LPRINT CHR$(27);"r";CHR$(6); 100 LPRINT CHR$(27);"0"

: ' clear top and

bottom margins"

Now when you run the program, your printer skip the first

six lines and the last six lines on each page (as shown on page

70). Always send a form feed after setting the top margin, or it will not work on the first page printed. That’s because the top margin only takes effect after a form feed.

Line 50 sets the top margin, line 30 sets the bottom margin,

and line 100 clears both margins when we are done.

SETTING LEFT AND RIGHT MARGINS

The left and right margins of this printer work just like a typewriter-once they are set all printing is done between them. You can set margins either by using the keys on the control panel, as described in Chapter 3, or by escape commands. The commands to set the margins are given in Table 5-6.

---+------------------

, ,

THIS IS LINE

I THIS IS LINE 6

I THIS IS LINE 7

1 THIS IS LINE

i THIS IS LINE 9

*- I TNF

10 1

THIS IS LINE 51 THIS IS LINE 52 THIS IS LINE 5; THIS IS LINE 54 THIS IS LINE 55

THIS IS LINE 56 THIS IS LINE 57 THIS IS LINE 58 THIS IS LINE 59 THIS IS LINE 60

THIS IS LINE 61

THIS IS LINE 62 THIS IS LINE b3

C T9 , TNF 64

Table 5-6

Left and right margin commands

Function Control code

Set left margin at column n

< ESC > “1” CHR$(n) < ESC > “Q” CHR$(n)

Set right margin at column n

(except IBM-P mode)

< FS > “Q” CHR$(n)

(IBM-P mode only)

Set left margin at column nl

and right margin at column n2

< ESC > “x” CHR$(nZ) CHR$(n2)

Try setting the margins with this program:

Demo of margins

GOSUB 70 LPRINT CHR$(27);“1”;CHR$(lO); LPRINT CHR$(27) ;“Q”;CHR$t70);

GOSUB 70 END FOR I=1 TO 80 LPRINT “X” ; NEXT I

90 100 LPRINT 110 RETURN

The tirst thing that this program does is to branch to the subroutine that starts in line 70. This subroutine prints 80 X’s in a row. The first time that the subroutine is used, all the

X’s tit in one line. Then line 30 sets the left margin to 10, and

line 40 sets the right margin to 70. Once again the subroutine is used, but this time the X’s won’t all fit on one line since there is now only room for 60 characters between the margins.

Run the program. The rsults will look like this:

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx

When you want to reset the margins to the default values, you have two choices. You can either turn the printer off and back on, or you can set margin values equal to the default values. This means that you should set a left margin of 0 and right margin of 136 in pica pitch.

If you change the pitch of your printing after you set your margins, the margins will not change. They stay at the same place on the page. So if you set the margins to give you 65 columns of printing when you are using pica type, and you change to elite type, you will have room for more than 65 columns of elite printing between the margins.

HORIZONTAL AND VERTICAL TABS

Suppose you need to move across the page to a certain position several times in a document. It’s not much fun to type in space after space. You don’t have to - you can “tab” your way across the page.

Your printer’s tabs are like those on a typewriter, but much more powerful. You have both horizontal and vertical tabs which can be used for both text and graphics - and they’re really handy for indenting paragraphs and making tables.

n Horizontal tabs

Horizontal tabs are set automatically every eight positions. To move the print head to the next tab position, send CHR$(9).

Try this program to see how the default tabs work.

10 ’ Demo of horizontal tabbing

20 LPRINT "ONE";CHR$(9);"TWO~';CHR$(9);"THREE~';

CHR$(91 ;"FOUR"

Here’s what you should get c1 Pi iii

“)_ LIJ I”i

j. t.., f:;t E;I: 1;;:

F:’ a i J Fi

Even though the words are different length, they are spaced

out evenly by the horizontal tabs.

Now add the following line to your program to set different

horizontal tabs:

15 LPRINT CHR$(27);"D";CHR$(7);CHR$(14);CHR$(21);

CHR$(O);

< ESC > “D” is the command to begin setting horizontal tabs. It must be followed by characters representing the positions where you want the tabs set. In our program we are setting tabs in columns 7, 14, and 21. The final CHR$(O) ends the string of tabs. In fact, any character that is not greater than the previous one will stop setting tabs. This means that you must put all your tab values in order, from least to greatest, or they won’t all get set.

. .

When you run the program now it produces this:

The words are now closer together, but still evenly spaced.

To reset the default tabs, use the following program:

LPRIN'T CHR$(27);"eO";CHR$O

This command resets the horizontal tabs to every eight co-

lumns.

Table 5-7

Set tabs at nl, n2, etc.

Horizontal tab commands

Function

Control code

Advance to next tab position

CHR$(9)

K Ecp A “D” CHR$(n1)

-LOLA’

1 CHR$(n

2) . . . . . CHR$(O)

Set tabs every n columns

<ESC>

“e” 0 CHR$(n)

Set tabs every 8 columns

<ESC>

“R”

(IBM-P mode only)

n One-time horizontal tabs

Suppose you need to move to a position across the page, but you only need to do it once. It doesn’t make much sense to set up a tab to use only one time. There is an easier way.

The solution is called a one-time tab. Table 5-8 shows the three commands.

Table 5-8

One-time horizontal tabs

The first command in Table 5-8 moves the print head n columns to the right. It has the same effect as sending n spaces

to the printer.

The absolute horizontal tab command moves the print head to a specified position on the page. The positon that you want the print head to move to (measured from the left margin) is specified by the values of nl and n2 in l/60-inch units using

the formula nl + n2 x 256.

Try this program to see how this works.

’ Demo of absolute horizontal tabs

20 FOR I=60 TO

70 STEP

2 30 LPRINT I ; “ttt++“; 40 LPRINT CHR$(27) ;“$“;CHR$(I) ;CHR$(O) ; 50 LPRINT “Horizontal tab. ”

60 NEXT I 70 END

In this program, the print head is positioned before the “H”

in “Horizontal” is printed.

The relative horizontal tab command can move the print head right from the current position. The formula for calculating how much the print head moves is the same as in the absolute horizontal tab command. However, the print head actually moves in l/120-inch units.

Try this program to see how this works.

10 ’ Demo of relative horizontal tabs

20 FOR I=1 TO 3

30 LPRINT

“Relative”;

40 LPRINT

CHR$(27);“\“;CHR$(I*2O);CHR$(O);

50 LPRINT

“Horizontal”;

60 LPRINT

CHR$(27);“\“;CHR$(I*lO~;CHR$(O);

70 LPRINT “Tab. ”

80 NEXT I

90 END

n Vertical tabs

Vertical tabs have the same kinds of uses that horizontal tabs

do - they just work in the other direction. Horizontal tabs

allow you to reach a specific column on the page no matter

where you start from. Vertical tabs are the same. If you have

a vertical tab set at line 20, a vertical tab (or < VT > ) will

move you to line 20 whether you start from line 5 or line 19.

Vertical tabs are not set at the power-on default. If you send

a CHR$( I l), which is the ASCII code for < VT > before we have set up tabs, the command advances the paper only one Iine. Enter this program to see how this works.

10 ’

Demo of vertical tabs

40 LPRINT CHR$(ll);"FIRST TAB." 50 LPRINT CHR$(ll);"SECOND TAB."

60 LPRINT CHR$(ll);"THIRD TAB." 70 LPRINT CHR$(ll);"FOURTH TAB."

Now, let’s set some vertical tabs of our own. Add these lines

to the program:

20 LPRINT CHR$(27);"B";CHR$(lOl;CHR$(l5);

3,O LPRINT CHR$i25);CHR$(30l;CHR$(O);

< ESC > “B” is the command to set vertical tabs. Like the horizontal tab setting command, tab positions must be defined in ascending order. Our example sets vertical tabs at lines 10,

15, 25 and 30. Then the CHR$(l 1) in each of the following lines advances the paper to the next vertical tab. The printout is shown next page.

Add one more line to the program to demonstrate one more

feature of vertical tabs.

80 LPRINT CHR$(ll);"FIFTHH TAB."

NQW when you run the program the first page looks just like before, but line 80 sends one more < VT > than there are tabs. This doesn’t confuse the printer - it advances the paper to the next tab position, which happens to be the first tab position on the next page.

There’s a one-time vertical tab command that works just like

the one-time horizontal tab command. Try this program to see how these commands work.

10 '

Demo of print positions

20 LPRINT "* lzt Line, 1st Column"

30 LPRINT CHR$(27);"fl";CHRS(31;

40 LPRINT

"* 4th Line, 1st Column"

50 LPRINT CHR$(27) ;"fO";CHR$(7);

60 LPRINT ‘I* 5th Line, 7th Column”

70 LPRINT CHR$(27) ;“fl”;CHR$(3);

80 LPRINT

CHR$(27);“fO”;CHR$(5);

90 LPRINT

‘I* 8th Line, 5th Column”

100 END

In this program, line 30 sends a one-time vertical tab with

< ESC > “f” 1 command. Line 50 sends a one-time horizontal tab with < ESC > “f’ 0 command. Finally, line 70 and line 80 send one-time vertical tab and one-time horizontal tab, so the line 90 prints text at the specified position.

Table 5-9

Vertical tab commands

Function Control code

Advance paper to next tab position CHR$(l 1)

Set vertical tabs at nl, n2, etc.

< ESC > “B” CHR$(nl)

CHR$(n2) . . . . . CHR$(O)

Set vetrical tabs every n lines

< ESC > “e” 1 CHR$(n)

One-time vertical tab

< ESC > “f’ 1 CHR$(n)

Cancel vertical tabs

< ESC > “R”

(IBM-P mode only)

n Vertical tab channels

Vertical tab channels are especially helpful in two situations. The first occurs when you are writing a program to accompany a preprinted form that can accommodate various types of responses. The second occurs when you create a multipage form or report with different vertical tabs on each page.

Table 5-10

Vertical tab channel commands

Function

Control code

Set vertical tabs at nl, n2, etc.

< ESC > “b” CHR$(nO)CHR$(nl)

as channel n0

CHR$(n2).....CHR$(O)

Select vertical channel n0

<ESC>

“/” CHR$(nO)

You can store up to eight channels of tab stops. They are

numbered from 0 to 7. If you have already stored a set using

< ESC > “B” command, your printer has labelled it as channel

0. Try this program how to see the vertical tab channels work.

10 ’ Demo of vertical tab channels 20 LPRINT CHR$(27);“b”;CHR$(l~;CHR$(lO);CHR$(20);

CHR$(O);

30 LPRINT CHR$(27);“b”;CHR$(2);CHR$(15);CHR$(25);

CHR$(O);

40 LPRINT CHR$(27);“b”;CHR$(3);CHR$(17);CHR$(28);

CHR$(O);

50 ’ Use vertical tab channels

60 FOR I=1 TO 3

70 LPRINT “TOP OF FORM”

80 LPRINT CHR$(27) ;“/“;CHR$(I);

90 LPRINT CHR$(ll);

100 LPRINT “1ST TAB OF CHANNEL“; I

110 LPRINT CHR$(ll); 12O’LPRINT “2ND TAB OF CHANNEL” ; I

130 LPRIN’T CHR$(12);

140 NEXT I

150 LPRINT CHR$ (27) ; “@”

160 END

In this program we set tabs at 10 and 20 in channel 1 in line

20. In line 30 we set tabs 15 and 25 in channel 2, and in line 40 we set tabs 17 and 28 in channel 3.

Because the channels are stored, you must make the printer to recall one before you use it, so we used < ESC > “I” CHR$(nO) in line 80.

When you run this program the printout should look like

this.

OP OF FORM

ST TAB OF CHANNEL 1

‘ND TAB OF CHANNEL 1

CENTER

‘OF OF FORM

LST TAB OF CHANNEL 2

2ND TAB OF CHANNEL

ING AND AL

ror OF FORM

IST TAH OF CHANNEL ?

2ND TAB OF CHANNEL Z

GNING TEXT

Text can be arranged in any of four formats: left aligned or left justified (normal printing with “ragged” right margin), centered between the margins, right aligned (right justified), or fully aligned. These are selected by the following commands:

Table 5-11

Alignment commands

Try this program to see how easy it is.

10 ’ Demo of aligning and centering 20 LPRINT CHR$(27);"1";CHR$(20); 30 LPRINT CHR$(27);"Q";CHR$(601; 40 LPRINT CHR$(27);"a";CHR$(O); 50 LPRINT "THIS LINE IS LEFT JUSTIFIED." 60 LPRINT CHR$(27);"a";CHR$(l); 70 LPRINT "THIS LINE IS CENTERED." 80 LPRINT CHR$(27);"a";CHR$(2); 90 LPRINT "THIS LINE IS RIGHT JUSTIFIED." 100 LPRINT CHR$(27);"a";CHR$(3);

110 LPRINT "THIS LINE IS LEFT AND RIGHT (FULL) JUSTIFIED." -

When you run this program, you should get like this:

CHAPTER 6

SPECIAL FEATURES OF

THE PRINTER

Subjects covered in Chapter 6 include -

l Printer’s bell l Master reset l IX-directional printing l International character sets l Printing BIG characters l The optional sheet feeder l Macro instruction l Reading a hex dump

In the previous chapters we have learned about several groups of control codes. In this chapter we will look at more control codes. These codes don’t fit neatly into any of the groupings that we have looked at so far, but they add a lot of useful features to your printer.

$ Now hear this

You may have heard the printer’s bell if you have ever run out of paper. And you may have wondered why it’s called a bell when it beeps instead of ringing! It’s a long story that goes back to the early days of computers, when teletype machines were used for computer terminals. These mechanical marvels

were equipped with a bell that could be heard for blocks. This bell was used to signal the operator that something needed

attention. The code that the computer sent to the teletype

machine to ring the bell was reasonably enough, called a bell

code. The name bell code is still with us, even if the bell has changed to a beeper, and a lot of people still call the beeper a bell, even if it doesn’t sound like one.

The code to sound the “bell” is CHR$(7), which is ASCII

code 7 or < BEL > . Any time your printer receives this code

it will sound the bell for a quarter of a second. This can be used to remind the operator to change the paper or to make other adjustments to the printer. You can try this by typing:

LPRINT CHR$(7)

n Resetting the printer

Up to now when we wanted to reset the printer to the power on condition we have had to either turn the printer off and on again, or to send the specific codes that reset the particular features. There is an easier way. The control code < ESC >

Y3T’

wil reset all of the printer’s features to the power on condition (as determined by the DIP switches), with two exceptions. Those exceptions are that < ESC> “a” will not erase any characters that you have stored in the printer’s RAM memory (Chapter 7 tells you how to create your own characters), and it won’t erase a macro if you have one stored in the printer’s RAM (this chapter will tell you how to create a macro).

In addition, if you set the “Panel” modes by the control panel settings at the power on, these functions will remain with this control code.

H Taking the printer off line

You know how to put your printer offline with the On Line key on the control panel. The printer has another off line state that can be controlled from the computer. When you turn the printer off line from the computer, the printer will ignore anything that you send it, except for the code to go on line again. CHR$( 19) is the code to turn the printer off line; CHR$( 17) turns the printer back to on line status.

n Printing the bottom of the sheet

Sometimes when you are using individual sheets of paper you may want to print near the bottom of a sheet. The pa-

per-out detector usually stops the printer when you are about

1 inch from the bottom of the sheet. This is notify you if you

are running out of continuous paper.

Your printer has the ability to print right to the bottom of the sheet. You can disable the paper-out detector so that it doesn’t stop the printer. This will allow you to print to the end of the sheet, and even beyond if you are not careful. The codes to control the paper-out detector, along with the other codes that we have just looked at are in the following table.

Table 6-l

Some miscellaneous commands

n Backspace, delete, and cancel text

Backspace (CHR$(8)) “backs up” the printhead so that you can print two characters right on top of each other. Each time your printer receives a backspace it moves the printhead one character to the left, instead of to the right. You can strike over multiple letters by sending more than one backspace code.

Delete (CHR$( 127)) also “backs up” one character, but then it “erases” the previous character (it’s erased from your printer’s buffer, not from the paper).

Cancel text (CHR$(24)) deletes all the text in the print buffer; that is, in the line before the delete text command. Since your printer prints one line of text at a time, only that line will be deleted.

The following program shows how these codes work.

10 LPRINT "BACKSPACE DOES NOT";

20 LPRINT

CHR$(8);CHR$(8);CHR$(8);

30 LPRINT 'I=== WORK"

40 LPRINT "DELETE DOES NOT";

50 LPRINT CHR$(127);CHR$(127);CHR$(127); 60 LPRINT

“WORK”

70 LPRINT "CANCEL LINE"; 80 LPRINT

CHRs(24);

90 LPRINT "DOES NOT WORK"

Here is what this program will print:

The backspace codes in line 20 move the printhead a total of three spaces to the left so that the first part of line 30 will overprint the word “NOT”. The delete codes in line 50 “erase” the three letters in the word “NOT” so that it doesn’t even print.

In line 80, CHR$(24) deletes the words in line 70. The semicolon at the end of line 70 prevents a line feed from causing that line to print before the printer receives the CHR$(24) code. The text in line 90 prints as it normally would because it is after CHR$(24).

n Printing zeroes

There are two types of zeroes. There is the one we use every

day - 0 - and this is what your printer will print as its default.

The other type is used almost exclusively in computers and engineering. It is called the “slash zero” and is written like this - 0. The line through the number prevents you from

misreading it as the letter “0”. Before high-quality printers were available, this was a good idea but there is no special need for it today (although you may want to use the slash zero for a special effect).

n Immediate-print

This printer can print at the quick rate of 180 characters

per second. But it will also print more slowly at the speed

of your typing. In the immediate-print mode, the printhead prints one character at a time, as you send it. The printer also moves the paper up so that you can see the current line and

then down to continue printing.

You can turn the immediate-print mode on with < ESC > “i” 1. Before looking at it, let’s review the normal operation of the print buffer. Enter this program.

20 A$="" : INPUT

M TYPE A CHARACTERS ",A$ 30 IF A$="" THEN 50 40 LPRINT A$; : GOT0 20 50 LPRINT :LPRINT CHR$(27);"@"

Now type several characters, and after each press the RETURN key. The printer simply puts the characters into its buffer while it waits for a carriage return code. (In this program the RETURN key doesn’t send a carriage return code.) To end this program and print the contents of the buffer, press

RETURN alone.

Now add this line:

10 LPRINT CHR$(2?);"il";

. And RUN the program. Your printer will now respond to

your typing - immediately.

When you are finished, press RETURN alone.

n Adjusting the width of space between characters

This printer provides a command that adjusts the space between all characters that it prints in the Standard mode. The < ESC > CHR$(32) CHR$(n) command adds blank space between the characters. The units of space that are added vary in l/240-inch units.

Try this program to see how this works.

10 ’

Demo of adjusting spaces 20 LPRINT CHH$ (27) ; “xl”; 30 FOR I=10 TO 1 STEP -2

40 LPRINT CHR$(27);” “;CHR$‘(i);

50 LPRINT “This line is added” ; I ; “spaces. ”

60 NEXT I

70 LPRINT CHR$(27) ;‘I “;CHR$(O) ; 80 LPRINT “This line is Normal space. ” 90 END

This line is

added 10

spaces.

This line is

ndded 8 spaces.

This line is

added 6 spaces.

This line

is added 4 spaces.

This line is added 2 spaces.

This line is Normal space.

This command can be used to produce micro-justification, which is a method of justifying lines by increasing the space between each character.

H Uni-directional printing

Uni-directional printing means printing in one direction

only.

Your printer normally prints when the printhead is moving in both directions. But once in a while you may have an application such as making tables where you are more concerned with how the vertical lines align than with how fast it prints. The printer lets you make this choice. The table below shows the commands for controlling how the printer prints.

Table 6-2

Printing direction commands

Function Control code

Print in one direction

<ESC> “U” 1 Print in both directions < ESC > “U” 0 One time print in one direction

<ESC> “<”

Try this program to see the difference that printing in one

direction makes.

’ Demo of uni-directional printing

20 LPRINT CHR$ (27) ; “1” ;

30 FOR I=1 TO 10

II , II

40 LPRINT , 50 NEXT I

60 LPRINT :LPRINT 70 LPRINT CHR$(27) ; “Ul”; 80 FOR I=1 TO 10

,I I II

90 LPRINT ,

100 NEXT I

110 LPRINT CHR$(12) ;CHR$(27) ;“Q”

Here is what you will get. The top line is printed bi-directionally, and the bottom is printed uni-directionally. You will have to look hard because there isn’t much difference, but the bottom vertical lines are perfectly alignined.

Let’s analyze the program. Line 20 sets the line spacing to

7/72 of an inch so that the,characters that we print will touch top to bottom. Lines 30 N 50 print 10 vertical line characters. Then line 70 sets uni-directional printing and the vertical lines

are printed again. Finally line 110 sends a form feed to advance

the paper to the top of a new page, and then uses the master

reset to restore the printer to the power on condition.

You can also set the printer to print in one direction for

one line only by using the < ESC > “ < ” command.

This

command immediately moves the printhead to the left margin and then prints the remainder of the line from left to right.

n The seven bit dilemma

Some computers (not the IBM-PC fortunately!) don’t have

the capability to send eight bits on their parallel interface, but

can only send seven bits. This would make it impossible for

these computers to use this printer’s block graphics characters and special symbols if our engineers hadn’t thought of a so-

lution. (All of these characters have ASCII codes greater than

127 which means that the eighth bit must be on to use them.) The solution lies in the three control codes given in the following table:

Table 6-3

Eighth bit controls

Function

Control code

Turn the eighth bit ON

<ESC> “>” <ESC> “=”

Turn the eighth bit OFF

(Except IBM-P mode)

<FS> “r”

(IBM-P mode)

Accept the eighth bit “as is” from < ESC, ,,#,, the computer

H Block graphics characters and special symbols

Besides the upper and lower case letters and symbols that

we are by now familiar with, your printer has a whole different

set of characters that are for special uses. These characters

include block graphics for drawing forms and graphs, and

special symbols for mathematical, engineering and professional

uses. The special characters are included in two character sets. The character set you normally use with the IBM mode is called character set #l. The special ch’aracters are printed out when you send ASCII codes 160- 255 to the printer.

Your printer also offers character set #2 which is almost the same as character set #1 except for the addition of ASCII codes 3 h 6, 21, and 128 N 159. Character set #2 is selected with

< ESC > “6”; to go back to character set #l, use < ESC >

“7.”

You can also specify the power-on default character set by

setting DIP switch 2-4 on for character set #l and off for character set #2. The following program will print out all of the graphics characters available:

10 LPRINT CHR5(27) ; “0”; 20 LPRINT. CHR$ (27) ; “6” ;

30 FOR J=3 TO 6

40 LPRINT. ”

“;J;CHR$(Jl;CHR$t9): 50 NEXT J 60 LPRINT ” 21 “;CHR5(21) 70 LPRINT 80 FOR J=128 TO 254 STEP 5 90 FOR I=J TO Jt4

100 IF I>254 THEN 140

110 LPRINT I;CHR$(I);CHR$t91;

120 NEXT I

130 LPRINT :LPRINT 140 NEXT J

Figure 6-l shows what this program will print. If your chart doesn’t look like this because it has regular letters and numbers instead of the special symbols, then your computer is only using

seven bits. You can get the correct printout by changing line

110 to this:

110 LPRINT I;CHR5(27);“>“;CHR$(I);CHR$(27);”=”;

CHR5(9) ;

So how are all of these characters used? Here is a program that demonstrate how the graphics characters can be combined to create a figure: the 5 of clubs.

10 LPRINT CHR5 (27) ; “6’;;

20 LPRINT CHR5(218);CHR$(l96);CHR5(196);

CHR$(l96);CHR$(196);CHR$(l96);CHR$(191)

33 LPRINT CHR$(179);CHR$(53);CHR5(32);CHR$(32);

CHR$(32);CHR$(32);CHR$(1791

40 LPRINT CHR$(1791;CHR5(32);CHR$(5);CHR5(32);

CHR$(5);CHR$(32);CHR$(l79)

50 LPRINT CHR5(179);CHR5(32);CHR5(32);CHR5(5):

CHR$(32);CHR$(32);CHR5(179)

60 LPRINT CHR$(179);CHR5(32);CHR$(5);CHR$(32);

CHR$(5);CHR$(32);CHR$(l79)

Figure 6-1. Character set #2

70 LPRINT CHR$(179);CHR5(32);CHR$(32);CHR5(32);

CHR$(32);CHR$(53);CHR$(179)

80 LPRINT CHR$(192);CHR5(196);CHR5(196);

CHR$(196);CHR$(196);CHR5(196);CHR5(217)

90 LPRINT CHR5(27);"7"

If you have a 7-bit interface, add the following lines to the

program given above:

15 LPRINT CHR5(27);">";

95 LPRINT CHR$(271;"="

In this program, line 10 selects character set #2 so that all the graphics characters can be used (including the “club” symbol). Then lines 20~ 80 print the 5 of clubs figure. Line 90 cancels character set #2 (which is the same as selecting character set #l).

Here is what this program prints:

n ’ International character sets

Your printer changes languages by changing 12 characters

that are different in the different languages. These sets of

character are called international character sets - and there

are 11 sets in all. The control codes to select the international character sets are given in Table 6-4.

Table 6-4

International character set commands

1 Denmark type II

< ESC > “R” CHR$(lO)

Note: When you set the printer to the IBM-P mode, use < FS > instead of <ESC>.

The characters that change are shown beneath their ASCII

code in Table 6-5.

Table 6-5

International character sets

Spain

pxl$l@l

1 Denmark type I

n Printing characters in the control code area

When you refer the Appendix B, you’ll find many characters

are printed in the control code area. (Remember that the

low-order control codes are the ASCII codes 0 through 31

plus 127. and the high-order control codes are 128 through

159 plus 255.)

These codes don’t normally print symbols on paper, rather they cause the printer to change modes. To make them print as normal symbols requires an extra command. For example, the command to “normalize” the high-order control codes is

< ESC > “6”. Try this program with the DIP switch 2-2 on.

10 ’ Demo of characters in the high-order

control code area 20 LPRINT CHR5 (27) ; “6”; 30 FOR I=128 TO 159

40 LPRINT CHR$(I);

50 NEXT I 60 LPRINT CHR5 (27) ; “7” 70 END

When you run this program you’ll get like this:

That’s where the italic international characters have been stored. So the < ESC > “6” command without the < ESC > “R” gives you access to the international characters. The

< ESC > “7” turns these characters back into control codes.

The low-order control codes can also be defined, but not all of them can be printed easily. The < ESC > “I” 1 command makes them printable, and the < ESC > “I” 0 command returns them to normal.

Just as the higher control codes hide the italic international characters, the lower control codes hide the roman international characters.

Let’s see how these commands work with the following

program:

’ Demo of characters in the control code area

20 LPRINT CHR$(27) ;“Il”;

FOR I=0 TO 6

LPRINT CHR$(I);

NEXT I

LPRINT CHR$(16);CHR5(17);

FOR I=21 TO 31

80 IF I=24 THEN 110 90 IF I=27 THEN 110 100 LPRINT CHR$(I); 110 NEXT I 120 LPRINT 130 FOR I=128 TO 134 140 LPRINT. CHR$(I); 150 NEXT I 160 LPRINT CHR$(144);CHR$(145); 170 FOR*I=149 TO 159 180 IF I=152 T'HEN 210 190 IF I=155 THEN 210 200 LPRINT CHR$(I); 210 NEXT I 220 LPRINT CHR$(27);"10" 230 END

When you run this program you should get like this:

Now, we’ll show you the characters in the control code area

in the IBM-P mode.

Turn the DIP switch 2-2 off, 2-3 on, and 2-4 on. Then turn

on the printer and run the following program:

’ Demo of characters in IBM-P mode

20 LPRINT

CHR$(27);"\";CHR$(32);CHR$(O); 30 FOR I=0 TO 31 40 LPRINT

CHR$(I); 50 NEXT I

60 LPRINT

70 END

In this program line 20 determines that the following 32 characters should be printed as printable characters. So, the characters in the control code area are printed as shown below.

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