Apple 310 User Manual
Developer Note
Apple LaserWriter Select 310
Printer
Developer Note
Developer Press
© Apple Computer, Inc. 2000
Apple Computer, Inc.
© 2000, Apple Computer, Inc.
All rights reserved.
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Contents
Figures and Tables vii
Preface
Chapter 1
About This Note
What This Note Contains ix
Conventions Used in This Note x
Other Reference Material x
For More Information xi
ix
LaserWriter Select 310 Hardware
Communication Ports 4
Serial Port for RS-232C Devices 4
Centronics Parallel Connector 5
Status Lights 8
Memory Capabilities 9
ROM Capability 9
DRAM Expansion 10
Basic Operation 10
Batch Mode 10
Interactive Mode 11
Page Types 11
Paper Handling 12
1
Chapter 2
LaserWriter Select 310 Software
Software Overview 16
Adobe PostScript Programming Language 16
PostScript Interpreter 16
LaserWriter Select 310 Driver 17
Page Types 17
Product Strings 19
Software Parameters 19
Communication Device Parameters 19
Compatibility Operators 19
Setting Compatibility Operators 21
Setting System Parameters 23
checkpassword 23
defaulttimeouts 23
idlefonts 23
15
iii
pagecount 23
printername 24
product 24
productA 24
ramsize 24
revision 24
setdefaulttimeouts 25
setidlefonts 25
setpassword 25
setprintername 26
Setting Page Device Parameters 26
defaultmultipurposetraysize 26
defaultpapertray 26
dostartpage 26
manualfeed 27
manualfeedtimeout 27
margins 27
pagestackorder 27
papersize 28
papertray 28
setdefaultmultipurposepapertraysize 28
setdefaultpapertray 29
setdostartpage 29
setmargins 29
setpagestackorder 30
setpagetype 30
setpapertray 30
Setting User Parameters 31
jobname 31
jobtimeout 31
setjobtimeout 31
waittimeout 32
Setting Device Parameters 32
setsoftwareiomode 32
softwareiomode 33
Setting Communication Parameters 33
packetbackchannel 33
sccbatch 34
setpacketbackchannel 34
setsccbatch 35
Setting Engine Device Parameters 35
darkness 35
setdarkness 36
Setting Extensions to PostScript Level 1 36
currentcacheparams 36
currentpacking 36
packedarray 37
iv
setcacheparams 37
setpacking 38
Printer Error Parameter 38
printererror 39
PostScript Language Changes 39
Packed Arrays 40
Packed Arrays Versus Ordinary Arrays 40
Creating Packed Arrays 40
Immediately Evaluated Names 41
Changes in Font Cache Operation 42
Device Resolution Images 42
End-of-Line Recognition 43
New Operators 44
TrueType Fonts 44
Chapter 3
Communication Channels
Serial Communication 46
Baud Rates 46
Parity Settings 47
Flow Control 47
DTR Flow Control 47
XON/XOFF Flow Control 48
SCC Operator Encoding 48
Communication Protocols 49
Simple Communication Protocol 49
Binary Communication Protocol 50
Communicating with an IBM PC 52
Parallel Interface 52
Serial Interface 53
DTR Flow Control for PC Communication 53
XON/XOFF Flow Control for PC Communication 54
Communication Dynamics 54
Status Queries and Spontaneous Messages 55
45
v
1
15
45
Figures and Tables
Chapter 1
Chapter 2
LaserWriter Select 310 Hardware
Figure 1-1
Figure 1-2
Figure 1-3
Figure 1-4
Figure 1-5
Figure 1-6
Figure 1-7
Table 1-1
Table 1-2
Table 1-3
Table 1-4
Table 1-5
LaserWriter Select 310 printer side panel connectors 4
An 8-pin serial port connector 5
A Centronics parallel connector 6
Timing for a Centronics interface 7
Status lights 8
The ROM and DRAM locations on a printed circuit board 9
Paper handling options 13
LaserWriter Select 310 printer features 3
Signal descriptions for an 8-pin serial port 5
Signal descriptions for a Centronics parallel port 6
Status light messages 8
Available page types 11
LaserWriter Select 310 Software
Table 2-1
Table 2-2
Table 2-3
Table 2-4
Paper tray selection operators 18
Product string values 19
Compatibility operators 20
LaserWriter Select 310 Parameters 21
Chapter 3
Communication Channels
Figure 3-1
Table 3-1
Table 3-2
Table 3-3
Table 3-4
Table 3-5
Table 3-6
SCC operator encoding 49
Default settings for the serial communication channel
parameters 46
Data and parity choices for the LaserWriter Select 310
printer 47
SCC compatibility operators options byte values 48
Reserved characters in simple communication protocol 49
Control characters in binary serial protocol 51
Settings for the serial output channel during parallel
communication 53
vii
PREFACE
About This Note
The LaserWriter Select 310 printer is a new member of Apple’s LaserWriter
printer family. It is an economical printer that supports the Adobe
PostScript
features and capabilities of the printer, and it is intended for use by software
and hardware developers.
To use this note, you need to understand the PostScript Level 1 programming
language. You should also be familiar with the computer for which you intend
to develop software.
You do not need to use this note if you are simply running packaged programs
for your computer. However, it is useful if you are writing or modifying a
program that is used with the LaserWriter Select 310 printer.
Your owner’s guide provides instructions for connecting the printer to your
computer, inserting paper, and performing other routine operating tasks. This
note does not provide that type of information.
This preface describes the contents of the note, explains visual cues and
conventions used in the note, and lists other books to which you can refer.
™
Level 1 programming language. This developer note describes the
™
What This Note Contains 0
This note is made up of three chapters.
■
Chapter 1, “LaserWriter Select 310 Hardware,” describes the hardware
features of the LaserWriter Select 310 printer, including the built-in
communications ports and interfaces.
■
Chapter 2, “LaserWriter Select 310 Software,” provides an overview of
software features, including the PostScript Programming Language, the
PostScript interpreter, LaserWriter Select 310 driver, and page types. It also
describes the software parameters and the PostScript Level 1 operators that
enable you to set up and configure the LaserWriter Select 310 printer.
Finally, it discusses changes made to the PostScript language that impact
the LaserWriter Select 310 printer.
■
Chapter 3, “Communication Channels,” describes the software support for
serial and parallel communication channels.
ix
▲
PREFACE
Conventions Used in This Note 0
The following visual cues are used throughout this note to identify different
types of information:
Note
A note like this contains information that is interesting but not essential
for an understanding of the main text.
IMPORTANT
This type of note contains information that is essential for an
understanding of the main text.
WARNING
A warning like this directs your attention to something that could
damage hardware or software, or that could result in loss of data.
A special font,
program code.
Courier
, is used for characters that you type or for lines of
It looks like this
◆
▲
▲
.
Other Reference Material 0
This developer note assumes that you are familiar with printer technology and
know how to operate and program Apple LaserWriter printers. The following
supplementary documents also provide useful information:
■
The owner’s guide shipped with every LaserWriter printer explains how to
set up the printer in the standard configuration. The guide gives basic
operating information on how to load toner cartridges, load the paper tray,
and so forth. It also provides basic troubleshooting information.
The LaserWriter Reference, published by Addison-Wesley, provides
■
information that is not in this note about fonts and about communicating
with LaserWriter printers over serial channels.
■
The PostScript Language Reference Manual, published by Addison-Wesley,
provides supplementary information on the PostScript language, including
information about semantics and syntax. The edition referenced throughout
this note is the first edition, unless otherwise indicated.
■
The PostScript Language Tutorial and Cookbook, published by AddisonWesley, provides a basic introduction to the PostScript programming
language. It also includes sample PostScript programs that help you quickly
understand how the PostScript programming language works.
The PostScript Language Program Design, published by Addison-Wesley, is
■
written for programmers who want to take advantage of the PostScript
program language to design efficient PostScript programs and
printer devices.
x
PREFACE
For More Information 0
APDA is Apple’s worldwide source for over three hundred development
tools, technical resources, training products, and information for anyone
interested in developing applications on Apple platforms. Customers receive
the quarterly APDA Tools Catalog featuring all current versions of Apple
development tools and the most popular third-party development tools.
Ordering is easy; there are no membership fees, and application forms are not
required for most of our products. APDA offers convenient payment and
shipping options, including site licensing.
To order products or to request a complimentary copy of the APDA Tools
Catalog , contact
APDA
Apple Computer, Inc.
P.O. Box 319
Buffalo, NY 14207-0319
Telephone 800-282-2732 (United States)
800-637-0029 (Canada)
716-871-6555 (International)
Fax 716-871-6511
AppleLink APDA
America Online APDA
CompuServe 76666,2405
Internet APDA@applelink.apple.com
xi
Figure 1-0
Listing 1-0
Table 1-0
CHAPTER 1
LaserWriter Select 310 Hardwar e 1
CHAPTER 1
2
LaserWriter Select 310 Hardware
The LaserWriter Select 310 printer is an economical laser printer that supports
PostScript
™
Level 1 functions. It executes page descriptions written in the PostScript
language, and it produces printed pages at a rate of up to five pages per minute. The
raster printing technology is xerographic, black and white, and write black at 300 dots
(pixels) per inch. The printer is dedicated, and it operates with Macintosh computers
using the RS-232 serial port or with DOS-based IBM personal computers using the
Centronics parallel port. It is available in 110-volt and 220-volt versions.
This chapter describes:
hardware features of the printer
■
■
communication ports
■
status lights
■
memory capabilities
■
basic operation
page types
■
■
paper handling capabilities of the printer
The LaserW riter Select 310 printer supports the entir e PostScript language specified in the
first edition of the PostScript Language Reference Manual . In addition, it has features,
capabilities, and operating modes not present in other PostScript language printers. You
may access these additional facilities by executing special PostScript operators that exist
only in the LaserWriter Select 310 printer’s PostScript interpreter.
Unlike other Apple LaserWriter printers, the LaserWriter Select 310 printer does not have
a rotary selection switch to allow you to select different communication protocols.
In addition, the printer does not have EEROM (electronically erasable ROM). This means
that any of the interpreter’s default parameters that are changed using
statusdict
operators are not placed in nonvolatile storage and will not persist across power cycles.
However, for parameters that are expected to change infrequently, a portion of RAM may
be used to simulate EEROM.
Table 1-1 lists functional features of the LaserWriter Select 310 printer.
CHAPTER 1
LaserWriter Select 310 Hardware
Table 1-1
Features Specifications
LaserWriter Select 310 printer features
Printing speed 5 pages per minute
Warm-up time 90 seconds (worst case)
Imaging 300 dpi
Processor Advanced Micro Devices Am29205, 16 MHz
Paper handling Standard
Output: 150-page, face-down tray
Inputs: Manual feed tray; 250-page feeder with 250-page universal
cassette
Optional
Inputs: additional 250-page feeder; additional 500-page feeder;
250-page legal-size cassette, 30-page envelope-size cassette, 500-page
B5-size cassette, 500-page letter-size cassette, 500-page A4-size
cassette, 50-page/5-envelope multi-purpose tray
For more information see sections “Page Types” and “Paper Handling”
at the end of this chapter
ROM 1 MB
<1 MB used for PostScript firmware and fonts
DRAM 1.5 MB
Expandable to 2.5 MB or 5.5 MB
The printer requires a minimum of 2.5 MB to print legal-size image areas
Interface ports RS-232 8-pin serial
Centronics 36-pin parallel
Communication rates 57,600 baud (RS-232)
Fonts 13 PostScript Type I fonts on board
TrueType fonts supported by downloading TrueType fonts in
unhinted Type I
PDL (Page Description
PostScript Level 1, or compatible
Language)
3
CHAPTER 1
LaserWriter Select 310 Hardware
Communication Ports 1
The LaserWriter Select 310 printer supports two communication ports:
RS-232 8-pin serial port
■
■
Centronics 36-pin parallel port
Figure 1-1 shows the relative positions of these ports on the rear panel of the printer.
Figure 1-1
LaserWriter Select 310 printer side panel connectors
Centronics 36-pin portSIMM card slot
RS-232 8-pin
serial port
When the LaserWriter Select 310 printer is first powered on, the serial port with binary
protocol enabled is the default communication port. If any character is received over the
Centronics parallel port, the parallel port with binary protocol and a serial back channel
automatically becomes the default port. If you want to change the communication port
back to serial mode after a job has been sent over the parallel port, you should power
down and then restart the printer. Similarly, if you wish to change printer drivers, you
should power down and then restart.
IMPORTANT
It is better to operate the LaserWriter Select 310 printer in either a serial
or a parallel communication environment than to transmit both
serial and parallel data. Attempting to operate in both environments may
cause unpredictable results.
▲
Serial Port for RS-232C Devices 1
The LaserWriter Select 310 printer supports the RS-232 protocol by means of an 8-pin
mini-DIN connector . This connector pr ovides the interface between the printer and Apple
Macintosh computers. Figure 1-2 shows the connector pin designations and
Table 1-2 lists the pin functions for this 8-pin connector. You can also connect the printer
directly to a Macintosh computer using a Peripheral-8 (M0197) cable and communicate
with the printer using the LaserWriter Select 310 printer driver, or a terminal emulation
program such as MacTerminal.
4
Communication Ports
CHAPTER 1
LaserWriter Select 310 Hardware
Figure 1-2
8 7 6
5 4
2
Table 1-2
Pin
number
An 8-pin serial port connector
3
1
Signal descriptions for an 8-pin serial port
Signal
name I/O Description
Connected to
chassis ground
1 DTR I Data terminal ready. Send data when this signal
is asserted.
2 DSR O Data set ready.
3 /TXD O Transmit data (inverted)
5 /RXD O Receive data (inverted)
4, 6 GND – Ground
7, 8 Not used – These pins are not connected
Centronics Parallel Connector 1
The LaserWriter Select 310 printer provides a 36-pin connector for communication with
a standard Centronics parallel interface. It is fully compatible with the IBM PC
Centronics port.
The parallel channel is basically unidirectional and is used to input information from the
host computer to the printer. The printer returns minimal status information to the host,
such as /POUT and /F AULT, which flag paper errors. It also returns handshaking signals
such as PBUSY and /PACK. If you require additional status information from the printer
while you are printing to the parallel port, you can use a host computer running a
terminal emulation at 9600 bauds to connect to the serial port of the printer.
Communication Ports
5
CHAPTER 1
LaserWriter Select 310 Hardware
Figure 1-3 shows the pin designations for the Centronics parallel connector and Table 1-3
lists the signal descriptions. Figure 1-4 shows the timing requirements for the Centronics
interface.
Figure 1-3
Pin 18
Pin 36
Table 1-3
Pin
number Signal name I/O Description
A Centronics parallel connector
Pin 1
Pin 19
Signal descriptions for a Centronics parallel port
1 /PSTROBE I Strobe for parallel input data
2 DATA 0 I Data input bit 0
3 DATA 1 I Data input bit 1
4 DATA 2 I Data input bit 2
5 DATA 3 I Data input bit 3
6 DATA 4 I Data input bit 4
7 DATA 5 I Data input bit 5
8 DATA 6 I Data input bit 6
9 DATA 7 I Data input bit 7
10 /PACK O Handshaking output signal; printer uses it to
acknowledge receipt of parallel data
11 PBUSY O Busy output signal; indicates that a /PSTROBE
signal has been received, but /PACK has not
yet been given
12 POUT O Paper out; an output error signal; indicates the
printer has run out of paper
13 Tied high – This select line is tied high so the LaserWriter
Select 310 printer is always selected
14, 15, 16 Not connected – These lines are not connected
17 CHASSIS
– Chassis ground
GROUND
18 Not used – Not used
6
Communication Ports
CHAPTER 1
LaserWriter Select 310 Hardware
Table 1-3
Signal descriptions for a Centronics parallel port (continued)
Pin
number Signal name I/O Description
19-30 SIGNAL
– Signal ground
GROUND
31 Not connected – This line is not connected
32 /FAULT O Fault signal; asserted if there is a printer
problem
33-36 Not connected – These lines are not connected
NOTE
Inputs and outputs are referenced to the printer. An input (I) signal is
sent from the host computer to the printer, and an output (O) signal is sent from
the printer to the host.
Figure 1-4
Data
/PSTROBE
Timing for a Centronics interface
a
cb
d
PBUSY
e
f
/PACK
g
Timing specification Min. value Typical value Max. value
a. Data setup time before PSTROBE on
b. PSTROBE on pulse width
c. Data hold time after PSTROBE off
d. PSTROBE on to PBUSY on
e. Duration of PBUSY on (printer on line)
f. PBUSY off to /PACK on
g. /PACK on pulse width
0.5µsec
1.0µsec
0.5µsec
0.0µsec
10.0µsec
0.0µsec
1.5µsec
500µsec
1.0µsec
2.5µsec
10.0µsec
Communication Ports
7
CHAPTER 1
LaserWriter Select 310 Hardware
Status Lights 1
The LaserWriter Select 310 printer has three colored lights on the left side of the printer.
These lights indicate what the printer is doing. Figure 1-5 shows a view of the status light
symbols, and Table 1-4 describes the functions of the lights.
Figure 1-5
Green Amber Amber
Ready/
In use
Table 1-4
Light Light’s state Printer’s state
Ready/in use
Green
Status lights
Paper
out
Status light messages
On
Off
Paper
jam
The printer is ready to use.
The printer cannot print because there is an error
condition, or the printer cover is open.
Flashing
The printer is warming up or is processing data for
the next print job.
Paper out
Amber
On
Paper tray is empty or has been removed from
the printer.
Off
There is an adequate supply of paper in the
paper tray.
Flashing
The printer is in manual-feed mode and is ready for
the next sheet of paper.
Paper jam
Amber
8
Status Lights
On
Off
Flashing
NOTE
If both the Paper out and Paper jam lights flash or stay on, the printer
requires service.
There is a paper jam.
Paper is feeding correctly through the printer.
The printer requires service.
CHAPTER 1
LaserWriter Select 310 Hardware
Memory Capabilities 1
The standard configuration of the LaserWriter Select 310 printer comes with 1MB of ROM
and 1.5 MB of DRAM. Figure 1-6 shows the positioning of the DRAM and ROM on the
printer’s main circuit board.
Figure 1-6
SIMM card slot
DRAM
Detail of SIMM card
The ROM and DRAM locations on a printed circuit board
512K x 8
512K x 8
256K x 16
Centronics connector
Presents
32-bit interface
to microprocessor
72-pin SIMM card accomodates
up to 8 DRAM devices. Layout of
devices on board depends upon
manufacturer.
8-megabit ROM
Serial port
Pin 1 Pin 36 Pin 37 Pin 72
8 256K x 4 DRAMs provide 1 MB of storage.
8 1 megabit x 4 DRAMs provide 4 MBs of storage.
Note: You must use 32-bit wide SIMMs.
ROM Capability 1
The LaserWriter Select 310 printer has a single ROM installed on the board. It
is an 8-megabit, 42-pin masked ROM, and it stores the diagnostic software, fonts,
and PostScript interpreter required by the printer. Currently you cannot expand
ROM capacity.
Memory Capabilities
9
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