Contec COM-2(PCI), COM-4(PCI), COM-8(PCI) User Manual

COM-2(PCI), COM-4(PCI), COM-8(PCI)

RS-232C Serial I/O Board for PCI

User’s Guide

Copyright

Copyright 1998 CONTEC Co., LTD. ALL RIGHTS RESERVED
No part of this document may be copied or reproduced in any form

by any means without prior written consent of CONTEC Co., LTD.

CONTEC Co., LTD. makes no commitment to update or keep
current the information contained in this document. The
information in this document is subject to change without notice.

All relevant issues have been considered in the preparation of this
document. Should you notice an omission or any questionable
item in this document, please feel free to notify CONTEC Co.,
LTD.

Regardless of the foregoing statement, CONTEC assumes no
responsibility for any errors that may appear in this document nor
for results obtained by the user as a result of using this product.

Trademarks

MS, Microsoft, MS-DOS and Windows are trademarks of Microsoft
Corporation. Other brand and product names are trademarks of their
respective holder.

COM-2(PCI), COM-4(PCI), COM-8(PCI) i

Product Configuration

- Main board (one of the following)

[COM-2(PCI), COM-4(PCI), COM-8(PCI) Board] …1

- COM(PCI) Series Windows COM Driver
with DOS Sample program (3.5inch/1.44MB) …1

- User’s Guide (this booklet)…1

Unpacking:

This board is specially packed in an anti-static bag to prevent
damage in shipping.

Check the contents to make sure that you have everything listed
above. If you do not have all the items, contact your distributor
or CONTEC group office where you purchased.

Note!

Do not remove the board from its protective packaging until the
computer case is open and ready for installation. Electrical static
can cause damage to electrical components.

COM-2(PCI), COM-4(PCI), COM-8(PCI)ii

Table of Contents

Copyright............................................................................i

Trademarks ........................................................................i

Product Configuration ..................................................... ii

1. Introduction .............................................................1

Features.........................................................................2

Limited Three-Year Warranty......................................3

How to Obtain Service..................................................3

Liability.........................................................................3

Handling Precautions...................................................4

About the Manual.........................................................5

2. Component Locations and Setting..............................7

Component Locations........................................................7

Setting the Board ID .......................................................10

Setting Procedure .......................................................10

3. Board Setup ............................................................11

For Windows Me Systems...............................................12

For Windows 98 Systems................................................15

For Windows 95 Systems................................................19

For Windows 2000 Systems............................................25

For Windows NT Systems ..............................................30

For Other OS Systems....................................................32

COM-2(PCI), COM-4(PCI), COM-8(PCI) iii

4. External Connection ............................................... 35

Interface Connector.........................................................35

Connecting the Interface Connector and Pin

Assignment..................................................................35

Optional Cables and Accessories....................................39

Optional Accessory List..............................................39

Connection Procedure.................................................40

Converting the Interface Connector

to 9-pin D-SUB, Male Connectors..............................41

Converting the Interface Connector

to 25-pin D-SUB, Male Connectors............................43

When using the CCU-78F/25M distribution unit.....45

Connecting the Cable......................................................47

5. I/O Ports and Registers ........................................... 49

I/O Port Assignment........................................................49

I/O Ports and Registers...................................................51

Register Address List for the 16552 and 16654 ............52

Baud Rate Selection........................................................54

Interrupt Vector Register ...............................................55

Using Interrupts.............................................................58

6. System Reference.................................................... 61

Circuitry Diagrams.........................................................61

Specifications...................................................................62

Block Diagrams...............................................................65

7. Index ..................................................................... 69

COM-2(PCI), COM-4(PCI), COM-8(PCI)iv

List of Figures

Figure 2.1. Component Locations <COM-2(PCI)>..................... 7

Figure 2.2. Component Locations <COM-4(PCI)>..................... 8

Figure 2.3. Component Locations <COM-8(PCI)>..................... 9

Figure 2.4. Board ID Settings (SW1)........................................ 10

Figure 3.1. Sample Programs on FD......................................... 33

Figure 4.1. Interface Connector <COM-2(PCI)>...................... 35

Figure 4.2. Pin Assignment of Interface Connector

<COM-2(PCI)>...................................................... 35

Figure 4.3. Interface Connector <COM-4(PCI)>...................... 36

Figure 4.4. Pin Assignment of Interface Connector

<COM-4(PCI)>...................................................... 36

Figure 4.5. Interface Connector <COM-8(PCI)>...................... 37

Figure 4.6. Pin Assignment of Interface Connector

<COM-8(PCI)>...................................................... 37

Figure 4.7. The note about external connection........................ 38

Figure 4.8 Connection Type..................................................... 40

Figure 4.9. PCE37/9PS Specifications ...................................... 41

Figure 4.10. PCE78/9PS Specifications ...................................... 42

Figure 4.11. PCE37/25PS Specifications.................................... 43

Figure 4.12. PCE78/25PS Specifications.................................... 44

Figure 4.13. Connection Procedure ............................................ 45

Figure 4.14. Interface Connector Pin Assignment ...................... 45

Figure 4.15. Example Connection to a Modem........................... 47

Figure 4.16. Example Connection to a PC.................................. 47

Figure 4.17. Example Connection to a Device............................ 48

COM-2(PCI), COM-4(PCI), COM-8(PCI) v

Figure 5.1. I/O Port Assignment <COM-2(PCI)>..................... 49

Figure 5.2. I/O Port Assignment <COM-4(PCI)>..................... 49

Figure 5.3. I/O Port Assignment <COM-8(PCI)>..................... 50

Figure 5.4. Interrupt Vector Register <COM-2(PCI)> .............. 55

Figure 5.5. Interrupt Vector Register <COM-4(PCI)> .............. 56

Figure 5.6. Interrupt Vector Register <COM-8(PCI)> .............. 57

Figure 5.7. Interrupt Output Control Circuit............................. 59

Figure 6.1. Circuitry Diagrams................................................. 61

Figure 6.2. Block Diagrams <COM-2(PCI)> ............................ 65

Figure 6.3. Block Diagrams <COM-4(PCI)> ............................ 66

Figure 6.4. Block Diagrams <COM-8(PCI)> ............................ 67

List of Tables

Table 3.1. Data Format.............................................................. 33

Table 4.1. Connection Procedure............................................... 40

Table 5.1. Function Selection Through Internal Registers.......... 51

Table 5.2. Register Address List for the 16552 and 16654

(Short from Texas Instruments data book) < 1 / 2 > .. 52

Table 5.2. Register Address List for the 16552 and 16654

(Short from Texas Instruments data book) < 2 / 2 > .. 53

Table 5.3. Baud Rate and Divisors............................................. 54

Table 6.1. Specification < COM-2(PCI)>.................................. 62

Table 6.2. Specification < COM-4(PCI)>.................................. 63

Table 6.3. Specification < COM-8(PCI)>.................................. 64

COM-2(PCI), COM-4(PCI), COM-8(PCI)vi

1. Introduction

Thank you for purchasing this PCI bus RS-232C communications
board.
This PCI bus board is an interface board for serial data transfer with
external devices. The board is installed in one of the PC's PCI bus
slots or in a PCI bus unit. Please read this manual carefully before
implementing in a system (such as developing application programs
or connecting to external devices).
Use of this board requires either driver software from CONTEC or
your own driver software that accesses the I/O address directly.

Support software provided with the board

COM-DRV(W32) ..... Standard COM serial communications

This is the same software as described in API-PAC(W32).
This software enables the board to be used in the same way as the
PC's COM ports (standard COM).
By adding additional boards, ports COM1 to COM256 can be
installed.
This enables serial communications for purposes such as remote
access service (RAS) and uninterruptable power supplies (UPS).
The software supports the standard Win32 API communication
routines.
Visual Basic communications control is supported.

Introduction

driver software for Windows 2000, NT, Me,
98 and 95

COM-2(PCI), COM-4(PCI), COM-8(PCI) 1

Introduction

Features

Support software sold separately
< Examples of CONTEC software products for Windows>

- Driver Software Package (Option) API-PAC(W32)

< Examples of CONTEC software products for Windows 3.1 >

- Driver Software (Option) (supports COM4-(PCI) only)
API-SIO(PC)WIN

Please follow the setup instructions of the User’s manual shipped
with the software products and/or the help files of the package to
setup our interface board(s) to your system.

For details of CONTEC software products, please contact our sales
agencies.

- As the board supports the PCI bus, the I/O address and IRQ

resource settings are set automatically.

- RS-232C compliant serial I/O ports

Board Number of channels
COM-2(PCI) 2
COM-4(PCI) 4
COM-8(PCI) 8

- Multiple boards can be installed in the same PC.

Board

COM-2(PCI) 16
COM-4(PCI) 8
COM-8(PCI) 16

Maximum number of

installed boards

- The data transfer rate is software-selectable in the range 50 to

230.4Kbps. The data transfer rate for each channel can be set
independently.

COM-2(PCI), COM-4(PCI), COM-8(PCI)2

Limited Three-Year Warranty

CONTEC Interface boards are warranted by CONTEC Co., LTD. to
be free from defects in material and workmanship for up to three
years from the date of purchase by the original purchaser.

Repair will be free of charge only when this device is returned
freight prepaid with a copy of the original invoice and a Return
Merchandise Authorization to the distributor or the CONTEC group
office, from which it was purchased.

This warranty is not applicable for scratches or normal wear, but
only for the electronic circuitry and original boards. The warranty
is not applicable if the device has been tampered with or damaged
through abuse, mistreatment, neglect, or unreasonable use, or if the
original invoice is not included, in which case repairs will be
considered beyond the warranty policy.

How to Obtain Service

For replacement or repair, return the device freight prepaid, with a
copy of the original invoice. Please obtain a Return Merchandise
Authorization Number (RMA) from the CONTEC group office
where you purchased before returning any product.

Introduction

* No product will be accepted by CONTEC group without the

RMA number.

Liability

The obligation of the warrantor is solely to repair or replace the product.
In no event will the warrantor be liable for any incidental or
consequential damages due to such defect or consequences that arise
from inexperienced usage, misuse, or malfunction of this device.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 3

Introduction

Handling Precautions

Take the following precautions when handling this board.

- Do not strike or bend the board. Doing so could damage the
board.

- Do not modify the board. CONTEC will bear no responsibility
for any problems, etc., resulting from modifying this board.

- Do not touch the board's metal plated terminals (edge connector)
with your hands. Doing so could cause connection malfunctions.
If the terminals are touched by someone's hands, clean the
terminals with industrial alcohol.

- There are switches on the board that need to be set in advance. Be
sure to check these before installing the board.

- Only set the switches and jumpers on the board to the specified
settings. Doing otherwise would cause trouble.

- Install the board in the computer's PCI expansion slot.

- Do not install or remove the board to or from the slot while the
computer's power is turned on. Doing so could cause trouble. Be
sure that the personal computer or the I/O expansion unit power is
turned off.

- The sum of the power consumed by the boards installed in the
personal computer's PCI bus expansion slots cannot be larger than
the personal computer's allowable power supply capacity. If the
boards' power sum is larger than this capacity, trouble could
occur.

COM-2(PCI), COM-4(PCI), COM-8(PCI)4

About the Manual

This manual consists of the following chapters :
Chapter 1 Introduction
Chapter 2 Component Locations and Setting

This chapter explains the names of major parts on the
board and its switch setting.

Chapter 3 Board Setup

This chapter describes the procedures for setting up
the board.

Chapter 4 External Connection

This chapter explains how to connect external devices
to the board and gives notes on connecting them.

Chapter 5 I/O Ports and Registers

This chapter provides the assignment and definition of
each I/O port bit used for the board. Refer to this
chapter when writing driver software.

Chapter 6 System Reference

This chapter summarizes hardware specifications of
the board and provides circuit block diagrams.

Introduction

Chapter 7 Index

COM-2(PCI), COM-4(PCI), COM-8(PCI) 5

Introduction

COM-2(PCI), COM-4(PCI), COM-8(PCI)6

Component Locations and Setting

2. Component Locations and Setting

Component Locations

Figure 2.1 - 2.3 shows the names of major parts on the board.
Note that the switch setting shown below is the factory default.

COM-2(PCI)

Figure 2.1. Component Locations <COM-2(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 7

Component Locations and Setting

COM4-(PCI)

Figure 2.2. Component Locations <COM-4(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI)8

COM-8 (PCI)

Component Locations and Setting

Figure 2.3. Component Locations <COM-8(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 9

Component Locations and Setting

Setting the Board ID

If two or more boards of the same type are installed in the same PC,
a board ID is assigned to identify each board. Set a different value
for each board.

The board IDs can be set in the range 0 to F enabling a maximum of
16 boards to be identified.

However, the range for COM-4(PCI) is 0 to 7, giving a maximum
of 8 boards.

Setting Procedure

The board IDs are set on a rotary switch on the board. Rotate
SW1 to the desired setting. However, do not set board IDs 8 or 9
on the COM-4(PCI) as these ID numbers are not used. The rotary
switch setting shown in the figure sets board ID 0.

Figure 2.4. Board ID Settings (SW1)

COM-2(PCI), COM-4(PCI), COM-8(PCI)10

3. Board Setup

The board setup method for the board depends on the operating
system being used. Set up the board using the method appropriate
for the OS that you are using.

For MS Windows OS systems, we recommend you to use our
Windows software products (optional).

< Examples of CONTEC software products for Windows>

- Driver Software Package (Option) API-PAC(W32)

< Examples of CONTEC software products for Windows 3.1 >

- Driver Software (Option) (supports COM4-(PCI) only)

Please follow the setup instructions of the User’s manual shipped
with the software products and/or the help files of the package to
setup our interface board(s) to your system.

For details of CONTEC software products, please contact our sales
agencies.

Board Setup

API-SIO(PC)WIN

COM-2(PCI), COM-4(PCI), COM-8(PCI) 11

Board Setup

For Windows Me Systems

Every PCI bus board/device will be automatically assigned required
system resources, such as I/O address range and interrupt level, by
the system whenever the system is turned on.

Under Windows Me OS, before using the board you should register
the board information, such as assigned resources, to the OS. This
procedure is called hardware installation. After the hardware
installation is done, Windows Me can then manage the board
information from its registers.

Following is hardware installation steps. After finished the
installation, you are supposed to confirm the registered board
information from Windows Me registers.

Hardware Installation Steps

(1) Set the board ID.
(2) Be sure the power of the personal computer is turned off; then

plug the board into a PCI bus slot in the system.

(3) Turn the personal computer ON to start up Windows Me.
(4) Because this is the first time Windows Me detected the board

from the system, Windows Me will display a message of [New
Hardware] on the screen and start run an [Add New Hardware
Wizard] program. After you find a massage of [PCI
Communication Device] from the program window.
Select a radio button of [Automatic search for a better driver.
(Recommended)] after insert the attached floppy disk into the
disk drive, then click [Next>] to continue.

(5) The copy of the necessary file is done automatically from the

floppy disk.

(6) In the next dialog box, you will find a message of “Windows

has finished installing the new hardware device.” Then you
click [Finish] to complete the installation of the board. After
completed the board installation, you are supposed to confirm
the registered board information from Windows Me registers.
The "Checking resources" part of this section explains you
how to do it.

COM-2(PCI), COM-4(PCI), COM-8(PCI)12

Board Setup

(7) After restarting system, run Config.exe from\CONTEC folder

to which file was copied.
Register the COM port No. in Config.exe.

(8) After restarting system, you can use registered COM port as

standard COM port.

Method of installing two or more boards:

(1) Install the first board correctly.
(2) Be sure to complete installation of the first board before

attempting to install a second one.
(3) Exit Windows Me and turn the personal computer off.
(4) Set the board ID of the second board that should be different

from the first one. Then plug the board into a PCI bus slot.
(5) Turn the personal computer on and start the Windows Me

again.
(6) The Windows Me will then automatically install the second

board. When the installation has been completed, re-check

the assigned resources.
(7) After restarting system, run Config.exe from \CONTEC folder

to which file were copied. Enter the COM port No. in

Config.exe.
(8) After restarting system, the board enable the board to used as

standard COM port.
For installing the third board and any additional boards, follow the

same steps as those for installing a second board. Before you can
install a third board or additional boards, all the boards that are
already installed must be in their PCI bus slots.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 13

Board Setup

Notes!

- The second board cannot be properly installed unless the
resources (I/O addresses and interrupt level) for the board can
be allocated. Before attempting to install the second board,
first determine what PC resources are free to use.

- The resources used by each board do not depend on the
location of the PCI bus slot or the board itself. If you remove
two or more boards that have already been installed and then
remount one of them on the computer, it is unknown that which
one of the sets of resources previously assigned to the two
boards is assigned to the remounted board. In this case, you
must check the resource settings.

Checking resources

Follow the steps below to check the assigned resources managed by
the OS.

(1) Double-click on the [System] option in [Control Panel] to open

the [System Properties] property sheet. Select the [Device
Manager] tab.

(2) Click [Multi-function adapters] folder.
(3) Click [CONTEC Co., Ltd.-COM-x(PCI)] folder to display its

properties.

(4) Select the [Resources] tab to check the device type, resource

settings, and the conflicting device list.

Precautions when using the API-SIO(98/PC)W95 bundled with
the API-PAC(W32):

To use the API-SIO(98/PC)W95 after installing the
hardware, install the API-SIO(98/PC)W95 from the
API-PAC(W32) and then run Config.exe.

API-SIO(98/PC)W95 can be used by a system's restarting after
choose [Tool] > [API-SIO] and set up board to use.
However, the board and another board can't used as standard COM
such as Hyper Terminal using API-SIO(98/PC)W95.

The API-SIO(98/PC)W95 cannot be used simultaneously
with another allocated standard COM.

COM-2(PCI), COM-4(PCI), COM-8(PCI)14

For Windows 98 Systems

Every PCI bus board/device will be automatically assigned required
system resources, such as I/O address range and interrupt level, by
the system whenever the system is turned on.

Under Windows 98 OS, before using the board you should register
the board information, such as assigned resources, to the OS. This
procedure is called hardware installation. After the hardware
installation is done, Windows 98 can then manage the board
information from its registers.

Following is hardware installation steps. After finished the
installation, you are supposed to confirm the registered board
information from Windows 98 registers.

Hardware Installation Steps

(1) Set the board ID.
(2) Be sure the power of the personal computer is turned off; then

plug the board into a PCI bus slot in the system.

(3) Turn the personal computer ON to start up Windows 98.

Board Setup

(5) Because this is the first time Windows 98 detected the board

from the system, Windows 98 will display a message of [New
Hardware] on the screen and start run an [Add New Hardware
Wizard] program. After you find a massage of [PCI
Communication Device] from the program window, click
[Next>] to continue.

(5) In the next dialog box, select a radio button of [Search for the

best driver for your device. (Recommended).], then click
[Next>] to continue.

(6) In the next dialog box, select both of the [Floppy disk drives

(F)] and [Specify Location (L)] check boxes, then enter the
drive name, such as “A:”, and the directory name, COMDRV,
into the [Location] field.
Insert the attached FD into the disk drive, then click [Next>] to
continue.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 15

Board Setup

(7) In the [Windows driver file search for the device] dialog box,

check that "CONTEC Co., Ltd.-COM-x(PCI)" and
"COM2K_PI.INF" in the [Location of driver] has been listed,
then click [Next>] to continue.

(8) In the next dialog box, you will find a message of “Windows

has finished installing the software that your new hardware
device requires.” Then you click [Finish] to complete the
installation of the board. After completed the board
installation, you are supposed to confirm the registered board
information from Windows 98 registers. The "Checking
resources" part of this section explains you how to do it.

(9) After restarting system, run Config.exe from\CONTEC folder

to which file was copied.
Register the COM port No. in Config.exe.

(10) After restarting system, you can use registered COM port as

standard COM port.

Method of installing two or more boards:

(1) Install the first board correctly.
(2) Be sure to complete installation of the first board before

attempting to install a second one.

(3) Exit Windows 98 and turn the personal computer off.
(4) Set the board ID of the second board that should be different

from the first one. Then plug the board into a PCI bus slot.

(5) Turn the personal computer on and start the Windows 98 again.
(6) The Windows 98 will then automatically install the second

board. When the installation has been completed, re-check
the assigned resources.

(7) After restarting system, run Config.exe from \CONTEC folder

to which file were copied. Enter the COM port No. in
Config.exe.

(8) After restarting system, the board enable the board to used as

standard COM port.

COM-2(PCI), COM-4(PCI), COM-8(PCI)16

Notes!

Board Setup

For installing the third board and any additional boards, follow the
same steps as those for installing a second board. Before you can
install a third board or additional boards, all the boards that are
already installed must be in their PCI bus slots.

- The second board cannot be properly installed unless the
resources (I/O addresses and interrupt level) for the board can
be allocated. Before attempting to install the second board,
first determine what PC resources are free to use.

- The resources used by each board do not depend on the
location of the PCI bus slot or the board itself. If you remove
two or more boards that have already been installed and then
remount one of them on the computer, it is unknown that which
one of the sets of resources previously assigned to the two
boards is assigned to the remounted board. In this case, you
must check the resource settings.

Checking resources

Follow the steps below to check the assigned resources managed by
the OS.

(1) Double-click on the [System] option in [Control Panel] to open

the [System Properties] property sheet. Select the [Device
Manager] tab.

(2) Click [Multi-function adapters] folder.
(3) Click [CONTEC Co., Ltd.-COM-x(PCI)] folder to display its

properties.

(4) Select the [Resources] tab to check the device type, resource

settings, and the conflicting device list.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 17

Board Setup

Precautions when using the API-SIO(98/PC)W95 bundled with
the API-PAC(W32):

To use the API-SIO(98/PC)W95 after installing the
hardware, install the API-SIO(98/PC)W95 from the
API-PAC(W32) and then run Config.exe.

API-SIO(98/PC)W95 can be used by a system's restarting after
choose [Tool] > [API-SIO] and set up board to use.
However, the board and another board can't used as standard COM
such as Hyper Terminal using API-SIO(98/PC)W95.

The API-SIO(98/PC)W95 cannot be used simultaneously
with another allocated standard COM.

COM-2(PCI), COM-4(PCI), COM-8(PCI)18

For Windows 95 Systems

Every PCI bus board/device will be automatically assigned required
system resources, such as I/O address range and interrupt level, by
the system whenever the system is turned on.

Under Windows 95 OS, before using the board you should register
the board information, such as assigned resources, to the OS. This
procedure is called hardware installation. After the hardware
installation is done, Windows 95 can then manage the board
information from its registers.

Following is hardware installation steps. After finished the
installation, you are supposed to confirm the registered board
information from Windows 95 registers.

This procedure does not install board driver(s). Lately you should
install driver program(s) yourself.

Hardware Installation Steps
<Checking the OS version>

The procedure of installing the board is different from the
Windows 95 versions. Before any installation, you must check the
version of Windows 95 that you are using.

Board Setup

(1) Open [Control Panel] from [My Computer].
(2) Double-click on the [System] option to open the [System

Properties] property sheet.

(3) Check the "System:" number displayed on the [General] page.

System : Microsoft Windows 95

4.00.950

The versions of Windows 95 include 4.00.950, 4.00.950a,

4.00.950B and 4.00.950C. The board setup method depends on
the version of Windows 95 that is being used.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 19

Board Setup

For Windows 95 version 4.00.950 or 4.00.950a systems:

(1) Set the board ID.
(2) Be sure the power of the personal computer is turned off; then

plug the board into a PCI bus slot in the system.

(3) Turn the personal computer ON to start up Windows 95.
(4) Windows 95 will come up with the [New Hardware] detection

dialog box. Select [CONTEC Co.,Ltd.-COM-x(PCI): Select
which driver you want to install for your new hardware.] and
then [Driver from disk provided by hardware manufacturer].

(5) In the [Install From Disk] dialog box, insert the attached FD

into the disk drive, enter the drive name and directory name in
the [Copy Distributed File From] field, then click [OK].
This completes installation of the board.

(6) Follow the instructions on the screen to complete installation

of the board. After completed the board installation, you are
supposed to confirm the registered board information from
Windows 95 registers. The "Checking resources" part of this
section explains you how to do it.

(7) After restarting system, run Config.exe from\CONTEC folder

to which file was copied.
Register the COM port No. in Config.exe.

(8) After restarting system, you can use registered COM port as

standard COM port.

COM-2(PCI), COM-4(PCI), COM-8(PCI)20

Board Setup

For Windows 95 version 4.00.950B or 4.00.950C systems:

(1) Set the board ID.
(2) Be sure to check that the personal computer is off; then plug

the board into a PCI bus slot in the system.

(3) Turn the personal computer on to start up Windows 95.
(4) Because this is the first tim e Windows 95 detected the board

from the system, Windows 95 will display a message of [New
Hardware] on the screen and start run an [Device Driver
Wizard] program. After you find a massage of [PCI
Communication Device] from the program window, click
[Next>] to continue.

(6) In the next dialog box, select [Specify Location...]. Insert the

attached FD into a drive, enter the drive name and directory
name (COMDRV) in the [Location] field, then click [OK].

(7) In the next dialog box, there should be a message of "Updated

driver found for this device". After confirmed this message you
click [End]. This completes installation of the board. After
completed the board installation, you are supposed to confirm
the registered board information from Windows 95 registers.
The "Checking resources" part of this section explains you
how to do it.

(7) After restarting system, run Config.exe from\CONTEC folder

to which file was copied.
Register the COM port No. in Config.exe.

(8) After restarting system, you can use registered COM port as

standard COM port.

When dialog of [The file "*.*" on CONTEC COM-x(PCI) Series
Windows COM Driver could not be found] is indicated during the
installation, specify "A:\COMDRV" in [Copy files from].

COM-2(PCI), COM-4(PCI), COM-8(PCI) 21

Board Setup

Method of installing two or more boards
(For Windows 95 version 4.00.950 or 4.00.950a system) :

(1) Install the first board correctly.
(2) Be sure to complete installation of the first board before

attempting to install the second one.

(3) Exit Windows 95 and turn the personal computer off.
(4) Check the board ID of the second board that should be

different from the first one. Then plug the board into a PCI bus
slot.

(5) Turn the personal computer on again to start up Windows 95.
(6) Windows 95 will come up with the [New Hardware] detection

dialog box. In [CONTEC Co.,Ltd.-COM-x(PCI): Select
which driver you want to install for your new hardware.],
select [Select from List].

(7) The [Select Hardware Type] dialog box will then appear.

In [Select Hardware Type to Install] windows, select [Other
Devices].

(8) In the [Select Device] dialog box, select [CONTEC] from

[Manufacturers] window and select [CONTEC Co., Ltd.­COM-x(PCI)] from [Models] window.

Notes!

(9) A [Change System Settings] dialog box appears. Follow the

messages to restart the computer.

(10) When Windows 95 is restarted, installation of the second board

is completed. Check the assigned resources again.

For installing the third board and any additional boards, follow the
same steps as those for installing a second board. Before you can
install a third board or additional boards, all the boards that are
already installed must be in PCI bus slots.

- The second board cannot be properly installed unless the
resources (I/O addresses and interrupt level) for the board can
be allocated. Before attempting to install the second board,
first determine what PC resources are free.

COM-2(PCI), COM-4(PCI), COM-8(PCI)22

Board Setup

- The resources used for each board do not depend on the
location of the PCI bus slot or the board itself. If you remove
two or more boards that have already been installed and then
re-mount one of them on the computer, it is unknown which one
of the sets of resources previously assigned to the two boards is
assigned to the re-mounted board. In this case, re-check the
resource settings.

Method of installing two or more Boards
(For Windows 95 version 4.00.950B or 4.00.950C systems) :

(1) Install the first board correctly.
(2) Be sure to complete installation of the first board before

attempting to install the second one.

(3) Exit Windows 95 and turn the personal computer OFF.
(4) Check the board ID of the second board, then plug it into a PCI

bus slot. Assign to the second board a board ID different
from the ID assigned to the first board.

(5) Turn the personal computer on again to start up Windows 95.
(6) The OS will then automatically install the second board.

When the installation has been completed, check the assigned
resources again.

Notes!

For installing the third board and any additional boards, follow the
same steps as those for installing a second board. Before you can
install a third board or additional boards, all the boards that are
already installed must be in PCI bus slots.

- The second board cannot be properly installed unless the
resources (I/O addresses and interrupt level) for the board can
be allocated. Before attempting to install a second board,
first determine which PC resources are free.

- The resources used for each board do not depend on the
location of the PCI bus slot or the board itself. If you remove
two or more boards that have already been installed and then
re-mount one of them on the computer, it is unknown which one
of the sets of resources previously assigned to the two boards is
assigned to the re-mounted board. In this case, re-check the

COM-2(PCI), COM-4(PCI), COM-8(PCI) 23

Board Setup

resource settings.

Checking resources

Follow the steps below to check the assigned resources managed by
the OS.

(1) Double-click on the [System] option in [Control Panel] to open

the [System Properties] property sheet. Select the [Device
Manager] tab.

(2) Click on the [Multi-function adapters] folder.
(3) Click on the [CONTEC Co., Ltd.-COM-x(PCI)] folder to

display its properties.

(4) Select the [Resources] tab to check the device type, resource

settings, and the conflicting device list.

Precautions when using the API-SIO(98/PC)W95 bundled with
the API-PAC(W32):

To use the API-SIO(98/PC)W95 after installing the
hardware, install the API-SIO(98/PC)W95 from the
API-PAC(W32) and then run Config.exe.

API-SIO(98/PC)W95 can be used by a system's restarting after
choose [Tool] > [API-SIO] and set up board to use.
However, the board and another board can't used as standard COM
such as Hyper Terminal using API-SIO(98/PC)W95.

The API-SIO(98/PC)W95 cannot be used simultaneously
with another allocated standard COM.

COM-2(PCI), COM-4(PCI), COM-8(PCI)24

For Windows 2000 Systems

When using the API-SIO(98/PC)NT bundled with the
API-PAC(W32), you do not need to execute the following
procedure. For more information, see the API-PAC(W32)
documentation.

Hardware Installation Steps

Every PCI bus board/device will be automatically assigned required
system resources, such as I/O address range and interrupt level, by
the system whenever the system is turned on.

Under Windows 2000 OS, before using the board you should
register the board information, such as assigned resources, to the
OS. This procedure is called hardware installation. After the
hardware installation is done, Windows 2000 can then manage the
board information from its registers.

Following is hardware installation steps. After finished the
installation, you are supposed to confirm the registered board
information from Windows 2000 registers.

(1) Set the board ID.

Board Setup

(2) Be sure to check that the personal computer is off; then plug

the board into a PCI bus slot in the system.

(3) Turn the personal computer ON to start up Windows 2000 as

an administrator.

(4) Windows 2000 will come up with the [Found New Hardware]

detection dialog box. In the [Found New Hardware Wizard]
that appears next, then select [Next>].

(5) In the next dialog box, check that "PCI Simple

Communications Controller" has been listed, select a radio
button of [Search for the suitable driver for my
device.(recommended).], then select [Next>].

(6) In the next dialog box, select the [Floppy disk drives] check

boxes, then Insert the attached FD into the disk drive, then
select [Next>].

COM-2(PCI), COM-4(PCI), COM-8(PCI) 25

Board Setup

Notes!

(7) In the [Driver Files Search Results] dialog box, check that

"COM2K_PI.INF" in the [Windows found a driver for this
device] has been listed, then select [Next>].
However, do not check it in a check box.

(8) In the next dialog box, check the "Completing the found New

Hardware Wizard.", and "CONTEC Co.,Ltd.COM-x(PCI)"
message, then select [Finish]. After completed the board
installation, be sure to check the assigned resources. The
"Checking resources" part of this section explains you how to
check the OS assigned resources of this board. (When board
setup has been completed, be sure to check the assigned
resources.)

(9) Run Config.exe from \CONTEC folder to which file were

copied. Enter the COM port No. in Config.exe.

(10) After restarting system, the board enable the board to te used

as standard COM port.

- The board cannot be properly installed unless the resources
(I/O addresses and interrupt level) for the board can be
allocated. Before attempting to install the second board, first
determine what PC resources are free.

- The resources used for the board do not depend on the location
of the PCI bus slot or the board itself. If you remove the board
that have already been installed and then remount one of them
on the computer, it is unknown which one of the sets of
resources previously assigned to the two boards is assigned to
the remounted board. In this case, re-check the resource
settings.

COM-2(PCI), COM-4(PCI), COM-8(PCI)26

Board Setup

How to install two or more boards of the same type

Follow the procedure below to install two or more boards of the
same type on Windows 2000.

(1) Check the board ID of the first board, plug it into a PCI bus

slot, then start up Windows 2000 to install the first board
correctly.

(2) Check that the first board has been set up correctly, as

described in "Checking resources".
Be sure to complete installation of the first board before
attempting to install the second one.

(3) Exit Windows 2000 and turn the personal computer off.
(4) Check the board ID of the second board, then plug it into a PCI

bus slot. Assign ID to the second board a board ID that is
different from the ID assigned to the first board.

(5) Turn the personal computer on again to start up Windows 2000

as an administrator

(6) Windows 2000 will come up with the [New Hardware]

detection dialog box, installation of the second board is
completed. Check the assigned resources again.

(7) Run Config.exe from \CONTEC folder to which file were

copied. Enter the COM port No. in Config.exe.

(8) After restarting system , the board enable the board to te used

as standerd COM port.

For installing the third board and any additional boards, before you
can install a third board or additional boards, all boards that are
already installed must be in PCI bus slots. all boards that are
already installed must be in PCI bus slots.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 27

Board Setup

Notes!

- A second board cannot be properly installed unless the
resources (I/O addresses and interrupt level) to be used for the
board can be allocated. Before attempting to install a second
board, first determine which PC resources are free.

- The resources used for each board do not depend on the
location of the PCI bus slot or the board itself.
If you remove two or more boards that have already been
installed and then re-mount one of them on the computer, it is
unknown which one of the sets of resources previously
assigned to the two boards is assigned to the re-mounted board.
In this case, check the resource settings again.

Checking resources

Follow the steps below to check the assigned resources managed by
the OS.

(1) Double-click on the [System] option in [Control Panel], Click

on [Hardware] property sheet. Open [Device Manager].

(2) Double-Click on the [Multifunction adapters] folder.
(3) Click on the [CONTEC Co.,Ltd.-COM-x(PCI)] or [CONTEC

Co.,Ltd.-COM-x(PC)x] folder to display its properties.

(4) Select the [Resources] tab to check the device type, resource

settings, and the conflicting device list.

Once installation is complete, the board can now be used under
Windows 2000.

COM-2(PCI), COM-4(PCI), COM-8(PCI)28

Board Setup

Note to use CONTEC provides driver software
API-SIO(98/PC)NT.

Cannot use COM port whereby it was allotted in
API-SIO(98/PC)NT. When use API-SIO(98/PC)NT after
installation COM-DRV, remove the registration information of the
board installed with the following process.

(1) Start [Explore], and right click on \WINNT\INF folder, and

choose [Search].

(2) Remove [OEM*.INF] indicated after [COM2K_PI] is inputted

to [Contening text:] and [Search Now] is carried out, and
[OEM*.PNF].

(3) Double-click on the [System] option in [Control Panel], Clicks

on [Hardware] property sheet. Open [Device Manager].

(4) Double-Click on the [Multifunction adapters] folder.
(5) An installed board is chosen, and [Uninstall] is carried out

after [Action].

(6) Do the installation of the board by using the medium of

API-PAC(W32) because [Add New Hardware Wizard] starts
after the OS re-start.

However, cannot use a board as which using API-SIO(98/PC)NT as
the standard COM port.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 29

Board Setup

For Windows NT Systems

Installing the driver software provided with the board enables the
board to be used as standard Windows NT COM ports. When

using the API-SIO(98/PC)NT bundled with the
API-PAC(W32), you do not need to execute the following
procedure. For more information, see the API-PAC(W32)
documentation.

Verifying PC settings

Be sure that [PnP OS] is either [disabled], [No], or set to [not to
use] in the PC's BIOS setup. If this is set to [enable], [Yes], [Use],
[Windows 95], or for example, the board might not be recognized
properly.

Hardware Installation Steps

(1) Set the board ID.
(2) Be sure that the personal computer power is off. Then plug

the board into a PCI bus slot in the system.

(3) Start Windows NT with Administrator.
(4) When Windows NT starts, run Explorer.
(5) Right click on the COMNT_PI.INF file in the \COMDRV

folder of the floppy disk, then left click on.

(6) Run Config.exe from the \CONTEC folder to which the files

were copied. Enter the board name, COM port No., and board
ID in Config.exe.

(7) The "Checking resources" part of this section explains you

how to check the OS assigned resources of this board.

COM-2(PCI), COM-4(PCI), COM-8(PCI)30

Board Setup

Checking resources

Follow the steps below to check the assigned resources managed by
the OS.

(1) Open [Windows NT Diagnostic Program] from [Management

Tools].

(2) Select [Resource] ([IRQ/Port Status]). Check the resource

types and settings assigned to the name "ComDrv", and check
for any conflicts.

Once installation is complete, the board's ports can now be used as
standard Windows NT COM ports.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 31

Board Setup

For Other OS Systems

For all the other operation systems, in addition of the Windows OS,
we use MS-DOS/Windows 3.1 as an example to show how to use
the board under the OS.

For all the other operation systems, refer the MS-DOS programs of
the attached FD as an example.

For a PCI bus board, the system will automatically assign a usable
resource/resources to the board. Refer the following procedure to
copy the attached programs and to confirm the assigned
resource/resources.

Hardware Installation Steps

(1) Set the board ID.
(2) Be sure that the personal computer is off; then plug the board

into a PCI bus slot in the personal computer.

(3) Turn the personal computer ON to start up MS-DOS.
(4) Run the resource checking program (COMPCI.EXE) from the

DOS directory of the supplied floppy disk.

(5) Check the I/O address and interrupt level displayed on the

screen. If the I/O address and interrupt level are displayed
correctly, the board can be used on MS-DOS and
Windows 3.1.

Obtaining resource information

You can obtain the PC resource information assigned to the board
by accessing the PCI BIOS. For specific details, refer to the
sample programs in the DOS directory of the supplied FD.

COM-2(PCI), COM-4(PCI), COM-8(PCI)32

Board Setup

Support software

CONTEC does not provide driver software for MS-DOS or
Windows 3.1. If using the boards on MS-DOS, refer to the sample
programs in the DOS directory of the supplied FD.

Sample programs for MS-DOS

The sample programs for using the board under MS-DOS are
written in Microsoft C.
The attached FD contains following sample programs.

Table 3.1. Data Format

Parameter

Baud rate 9600bps 230.4Kbps

Data bits
Stop bits

Parity

DOS --- Samples ---

(ii) (iii) (iv) (vii) (viii) (v) (vi)

(i) COMPCI.C Resource check program

(ii) COMPCI01.C Data transmission

(iii) COMPCI02.C Data reception

(iv) COMPCI03.C Interrupt-driven data reception

(v) COMPCI04.C Data transmission and reception

(vi) COMPCI05.C Interrupt-driven data transmission

(vii) COMPCI06.C Half-duplex data transmission

(viii)COMPCI07.C Half-duplex data reception

Data format

8 bits
2 bits
None

COMPCI.EXE

COMPCI01.EXE

COMPCI02.EXE

COMPCI03.EXE

COMPCI04.EXE

COMPCI05.EXE and reception

COMPCI06.EXE

COMPCI07.EXE

Figure 3.1. Sample Programs on FD

COM-2(PCI), COM-4(PCI), COM-8(PCI) 33

Board Setup

Note!

As sample programs (vii) and (viii) use half-duplex mode, they can
only be run for the COM-2PD(PCI) board. The programs cannot
be used for the COM-2(PCI), COM-4(PCI), and COM-8(PCI)
boards. See Chapter 5 for details about I/O addresses.
For details on I/O addresses, see Chapter 5 "I/O Ports and
Registers."

- When you use the board under a non plug-and-play OS like
MS-DOS, be sure that [PnP OS] is either [disabled] or set to
[not to use] in the PC's BIOS setup. If this is set to [Windows
95], for example, the board might not be recognized properly.

COM-2(PCI), COM-4(PCI), COM-8(PCI)34

4. External Connection

Interface Connector

Connecting the Interface Connector and Pin Assignment

Use the on-board interface connector to connect the board to an
external device.

COM-2(PCI)

External Connection

Figure 4.1. Interface Connector <COM-2(PCI)>

Figure 4.2. Pin Assignment of Interface Connector

<COM-2(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 35

External Connection

COM-4(PCI)

Figure 4.3. Interface Connector <COM-4(PCI)>

Figure 4.4. Pin Assignment of Interface Connector

<COM-4(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI)36

External Connection

COM-8(PCI)

Figure 4.5. Interface Connector <COM-8(PCI)>

Signal

Pin No. Pin No. Pin No.

name

1 DTR 8 21 CTS 8 40 RI 8 60 SG 8
2 RxD 8 22 RTS 8 41 DCD 8 61 N.C.
3 TxD 8 23 CTS 7 42 DSR 8 62 RI 7
4 RxD 7 24 RTS 7 43 DTR 7 63 SG 7
5 TxD 7 25 DSR 7 44 DCD7 64 N.C.
6 DTR 6 26 CTS 6 45 RI 6 65 SG 6
7 RxD 6 27 RTS 6 46 DCD 6 66 N.C.
8 TxD 6 28 CTS 5 47 DSR 6 67 RI 5

9 RxD 5 29 RTS 5 48 DTR 5 68 SG 5
10 TxD 5 30 DSR 5 49 DCD 5 69 RI 4
11 RxD 4 31 CTS 4 50 DTR 4 70 SG 4
12 TxD 4 32 RTS 4 51 DCD 4 71 DSR 4
13 DTR 3 33 CTS 3 52 RI 3 72 SG 3
14 RxD 3 34 RTS 3 53 DCD 3 73 N.C.
15 TxD 3 35 CTS 2 54 DSR 3 74 RI 2
16 RxD 2 36 RTS 2 55 DTR 2 75 SG 2
17 TxD 2 37 DSR 2 56 DCD 2 76 N.C.
18 DTR 1 38 CTS 1 57 RI 1 77 SG 1
19 RxD 1 39 RTS 1 58 DCD 1 78 N.C.
20 TxD 1 59 DSR 1

Signal

name

Signal

name

Pin No.

Figure 4.6. Pin Assignment of Interface Connector

<COM-8(PCI)>

Signal

name

COM-2(PCI), COM-4(PCI), COM-8(PCI) 37

External Connection

Figure 4.7. The note about external connection

The connector used for COM8-(PCI) has a wide interpin space and is highly reliable.
In the case of a PC with a narrow slot opening, a gap might be created as wide as the
thickness of the sheet metal of the PC when an external cable is connected,
preventing the connector from being fitted properly. If the thickness of the sheet
metal is less than 1.5mm (typically about 1.0mm), simply tighten the adjusting screw
located on the side of the connector to install it properly. The connector should
function without a problem.

COM-2(PCI), COM-4(PCI), COM-8(PCI)38

Optional Cables and Accessories

Optional Accessory List

Optional Cables

RS-232C Straight Cable with D-SUB9P (1.8m) RSS-9M/F
RS-232C Cross Cable with D-SUB9P (1.8m) RSC-9F
RS-232C Straight Cable with D-SUB25P (1.8m) RSS-25M/F
RS-232C Cross Cable with D-SUB25P (1.8m) RSC-25F
RS-232C Connection Conversion Straight Cable (25M→9F, 1.8m)

RS-232C Connection Conversion Straight Cable (25F→9M, 1.8m)

RS-232C Connection Conversion Cross Cable (25F→9F, 1.8m)

Connection Conversion Cable for RS-232C (37M→9M x 4, 250mm)

Connection Conversion Cable for RS-232C (37M→25M x 4, 250mm)

Connection Conversion Cable for RS-232C (37M→25M x 4, 450mm)

Connection Conversion Cable for RS-232C (78M→9M x 8, 1m)

Connection Conversion Cable for RS-232C (78M→25M x 8, 1m)

COM-8ch Board Optional Cable for CCU-78F/25M (2m)

COM-4ch Board Optional Cable for CCU-78F/25M (2m)

External Connection

RSS-25M/9F

RSS-25F/9M

RSC-25F/9F

PCE37/9PS

PCE37/25PS

COM-4M CABLE(PC)1

PCE78/9PS

PCE78/25PS

RSS-78M

RSS-78M/37M

Optional accessories

Connection Conversion Unit for RS-232C(78P→25P x 8)

CCU-78F/25M *1

*1 The option cable RSS-78M or RSS-78M/37M is needed.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 39

External Connection

-

RSS-9F

9-pin D-SUB, female connector

COM-4(PCI)

(a)-PCE37/9PS

9-pin D-SUB, male connector

-

PCE37/25PS

25-pin D-SUB, male connector

(b)-PCE37/9PS

-

RSS-9M/F

9-pin D-SUB, male connector

-

PCE37/9PS

-

RSC-9F

9-pin D-SUB, female connector

-

PCE37/25PS

-

RSS-25F/9M

9-pin D-SUB, male connector

-

PCE37/25PS

-

RSS-25M/F

25-pin D-SUB, male connector

-

PCE37/25PS

-

RSC-25F

25-pin D-SUB, female connector

-

COM-4M CABLE(PC)1

-

RSC-25F/9F

9-pin D-SUB, female connector

-

COM-4M CABLE(PC)1

-

RSC-25F

25-pin D-SUB, female connector

(c) -RSS-78M/37M

-

CCU-78F/25M

-

RSS-25F/9M

9-pin D-SUB, male connector

-

RSS-78M/37M

-

CCU-78F/25M

-

RSC-25F/9F

9-pin D-SUB, female connector

-

RSS-78M/37M

-

CCU-78F/25M

-

RSC-25F

25-pin D-SUB, female connector

COM-8(PCI)

(a)-PCE78/9PS

9-pin D-SUB, male connector

-

PCE78/25PS

25-pin D-SUB, male connector

(b)-PCE78/9PS

-

RSS-9M/F

9-pin D-SUB, male connector

-

PCE78/25PS

-

RSS-25F/9M

9-pin D-SUB, male connector

-

PCE78/25PS

-

RSS-25M/F

25-pin D-SUB, male connector

-

PCE78/25PS

-

RSC-25F/9F

9-pin D-SUB, female connector

-

PCE78/25PS

-

RSC-25F

25-pin D-SUB, female connector

(c) -RSS-78M

-

CCU-78F/25M

-

RSS-25F/9M

9-pin D-SUB, male connector

-

RSS-78M

-

CCU-78F/25M

-

RSS-25M/F

25-pin D-SUB, male connector

-

RSS-78M

-

CCU-78F/25M

-

RSC-25F/9F

9-pin D-SUB, female connector

-

RSS-78M

-

CCU-78F/25M

-

RSC-25F

25-pin D-SUB, female connector

Connection Procedure

Figure 4.8 Connection Type
Table 4.1. Connection Procedure

Board

COM-2(PCI) (a) - RSS-9M/F 9-pin D-SUB, male connector

Connection

Type

- PCE37/25PS - RSC-25F/9F 9-pin D-SUB, female connector

- RSS-78M/37M - CCU-78F/25M - RSS-25M/F 25-pin D-SUB, male connector

- PCE78/9PS - RSC-9F 9-pin D-SUB, female connector

Option Cable and Accesssories

Connector

COM-2(PCI), COM-4(PCI), COM-8(PCI)40

External Connection

Converting the Interface Connector to 9-pin D-SUB,
Male Connectors

COM-4(PCI)

The optional cable "PCE37/9PS" is available as an option. This
cable converts the CN1 (37-pin D-SUB connector) on the
COM-4(PCI) board to 9-pin D-SUB male connectors for four
channels as shown below.

Figure 4.9. PCE37/9PS Specifications

COM-2(PCI), COM-4(PCI), COM-8(PCI) 41

External Connection

COM-8(PCI)

The optional cable "PCE78/9PS" is available as an option. This
cable converts the CN1 (78-pin D-SUB connector) on the
COM-8(PCI) board to 9-pin D-SUB male connectors for eight
channels as shown below.

Figure 4.10. PCE78/9PS Specifications

COM-2(PCI), COM-4(PCI), COM-8(PCI)42

External Connection

Converting the Interface Connector to 25-pin D-SUB,
Male Connectors

COM-4(PCI)

The optional cable "PCE37/25PS" is available as an option. This
cable converts the CN1 (37-pin D-SUB connector) on the
COM-4(PCI) board to 25-pin D-SUB male connectors for four
channels as shown below.

Figure 4.11. PCE37/25PS Specifications

COM-2(PCI), COM-4(PCI), COM-8(PCI) 43

External Connection

COM-8(PCI)

The optional cable "PCE78/25PS" is available as an option. This
cable converts the CN1 (78-pin D-SUB connector) on the
COM-8(PCI) board to 25-pin D-SUB male connectors for eight
channels as shown below.

Figure 4.12. PCE78/25PS Specifications

COM-2(PCI), COM-4(PCI), COM-8(PCI)44

External Connection

When using the CCU-78F/25M distribution unit

The CCU-78F/25M is available as a separately-sold accessory.
This unit is a terminal block that enables the COM-8(PCI) or COM­4(PCI) installed on your computer to connect to an external device.

This unit offers the following features:

- Easy connection between the interface board and the external
device.

- The unit can be installed on the DIN rail. (The DIN rail adapter
is additionally required)

- Connection of an external power source enables power to be
output from the 25-pin D-SUB connector.

Figure 4.13. Connection Procedure

1. Use the special-purpose cable (purchased separately) to connect
the interface board to the distribution unit.

2. Check the connections on the distribution unit and use RS-232C
cables to connect the external devices.

Figure 4.14. Interface Connector Pin Assignment

COM-2(PCI), COM-4(PCI), COM-8(PCI) 45

External Connection

Connector Cable (Purchased separately)

The cable for connecting to the interface board is not included with
CCU-78F/25M. Purchase the appropriate cable from amongst the
following option cables.

COM-8ch board connection cable for CCU-78F/25M

- RSS-78M (2m)

COM-4ch board connection cable for CCU-78F/25M

- RSS-78M/37M (2m)

Note!

Only CH1 to CH4 can be used in the case of an RSS-78M/37M.
CH5 to CH8 cannot be used.

COM-2(PCI), COM-4(PCI), COM-8(PCI)46

Connecting the Cable

The RS-232C interface requires that you use a different type of
cable depending on the type of device being connected. For
example, modem connections and computer (PC) connections
require different cables. Accordingly, check the specifications of
the external device to which you are connecting and select the
appropriate type of cable. The two types of cable are "straight­through" and "crossed". Also, if the signal lines require
conditioning in the connector, provide conditioning in accordance
with the specifications.

External Connection

TxD
RxD

RTS
CTS
DTR
DSR
SG

Board

(Transmit Data)

TxD

(Receive Data)

RxD
RTS

(Request to Send)
(Clear to Send)

CTS
DTR

(Data Terminal Ready)
(Data Set Ready)

DSR

(Signal Ground)

SG

External device

Figure 4.15. Example Connection to a Modem

Figure 4.16. Example Connection to a PC

COM-2(PCI), COM-4(PCI), COM-8(PCI) 47

External Connection

Figure 4.17. Example Connection to a Device

COM-2(PCI), COM-4(PCI), COM-8(PCI)48

5. I/O Ports and Registers

I/O Port Assignment

When the PC boots, multiple consecutive port I/O addresses are
automatically allocated to the board. To determine where the top
I/O address has been allocated, refer to the "Board Setup" section
for each OS in Chapter 3.

Figure 5.1. I/O Port Assignment <COM-2(PCI)>

I/O Ports and Registers

Figure 5.2. I/O Port Assignment <COM-4(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 49

I/O Ports and Registers

Figure 5.3. I/O Port Assignment <COM-8(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI)50

I/O Ports and Registers

The board uses a 16552 equivalent as the asynchronous
communication element (ACE) (the COM-8(PCI) uses a 16654
equivalent). For details, refer to the data sheet supplied by Texas
Instruments or other manufacturer. The functions of the eight
consecutive ports from the set I/O address are the same for each
channel. However, on the COM-4(PCI), "top I/O address + 1FH"
for channel 4 is used as the interrupt vector register and therefore
cannot be used as a scratch pad register. On the COM-8(PCI),
"top I/O address + 1FH" for channel 4 and "top I/O address + 3FH"
for channel 8 are used as interrupt vector registers and therefore
cannot be used as scratch pad registers. Table 5.1 lists the
functions of each I/O port.

- COM-2(PCI) has CH1 and CH2 only.
COM-4(PCI) has CH1 to CH4 only.

Table 5.1. Function Selection Through Internal Registers

I/O port address (Starting I/O addresses +xxH)
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
+0H +8H +10H +18H +20H +28H +30H +38H 0
+0H +8H +10H +18H +20H +28H +30H +38H 0
+1H +9H +11H +19H +21H +29H +31H +39H 0
+2H +AH +12H +1AH +22H +2AH +32H +3AH ×
+2H +AH +12H +1AH +22H +2AH +32H +3AH ×
+3H +BH +13H +1BH +23H +2BH +33H +3BH ×
+4H +CH +14H +1CH +24H +2CH +34H +3CH ×
+5H +DH +15H +1DH +25H +2DH +35H +3DH ×
+6H +EH +16H +1EH +26H +2EH +36H +3EH ×
+7H +FH +17H ----- +27H +2FH +37H ----- ×
+0H +8H +10H +18H +20H +28H +30H +38H 1
+1H +9H +11H +19H +21H +29H +31H +39H 1

R : Read only
W : Write only.
DLAB : Divisor Latch Access Bit in the Modem Status Register.

I/O Ports and Registers

DLAB ACE Register (TL16552) R / W

Receiver (Buffer register)
Transmitter (Holding register)
Interrupt Enable Register
Interrupt ID
FIFO Control
Line Control
Modem Control
Line Status
Modem Status
Scratchpad Register
Baud Rate Divider Register LSB
Baud Rate Divider Register MSB

R

W

R

W

If the high-order DLAB in the line control register is set to 0,
"starting I/O address + 0H" and "starting I/O address + 1H" serve as
the transmission/reception buffer and interrupt mask register,
respectively. If DLAB is set to "1", they serve as frequency­division registers.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 51

I/O Ports and Registers

Register

Register Address List for the 16552 and 16654

16552 : Used on the COM-2(PCI) and COM-4(PCI)
16654 : Used on the COM-8(PCI)

Table 5.2. Register Address List for the 16552 and 16654

(Short from Texas Instruments data book) < 1 / 2 >

0 DLAB = 0 0 DLAB = 0 1 DLAB = 0 2 2 3
Bit Receiver Transmitter Interrupt Interrupt FIFO Line
No. Buffer Holding Enable Ident. Control Control

Register Register Register Register Register Register

(Read Only) (Write Only) (Read Only) (Write Only)

RBR THR IER IIR FCR LCR

0 Data Bit 0 Data Bit 0 Enable "0" if FIFO Word

1 Data Bit 1 Data Bit 1 Enable Interrupt RCVR Word

2 Data Bit 2 Data Bit 2 Enable Interrupt XMIT Number of

3 Data Bit 3 Data Bit 3 Enable Interrupt DMA Parity

4 Data Bit 4 Data Bit 4 Sleep Interrupt TX Even

5 Data Bit 5 Data Bit 5 Xoff Interrupt TX Stick

6 Data Bit 6 Data Bit 6 RTS FIFOs RCVR Set

7 Data Bit 7 Data Bit 7 CTS FIFOs RCVR Divisor

*2 : Each bit is 0 fixations in 16552.

Received Interrupt Enable Length

Data Pending Select
Available Bit 0
Interrupt (WLS0)

(ERBFI)

Transmitter ID FIFO Length

Holding Bit (0) Reset Select
Register Bit 1

Empty (WLS1)

Interrupt

(ETBEI)

Receiver ID FIFO Stop Bits

Line Status Bit (1) Reset (STB)

Interrupt

(ELSI)

MODEM ID Mode Enable

Status Bit (2) Select (PEN)

Interrupt

(EDSSI)

Mode ID Trigger Parity

*2 Bit (3) (LSB) Select

*2 *2 (EPS)

Interrupt ID Trigger Parity

*2 Bit (4) (MSB)

*2 *2

Interrupt Enabled Trigger Break

*2 (LSB)

Interrupt Enabled Trigger Latch

*2 (MSB) Access Bit

(DLAB)

COM-2(PCI), COM-4(PCI), COM-8(PCI)52

I/O Ports and Registers

Register

Table 5.2. Register Address List for the 16552 and 16654

(Short from Texas Instruments data book) < 2 / 2 >

Bit MODEM Line MODEM Scratch Divisor Divisor
No. Control Status Status Register Latch Latch

0 Data Data Delta Bit 0 Bit 0 Bit 8

1 Request Overrun Delta Bit 1 Bit 1 Bit 9

2 Out 1 Parity Trailing Bit 2 Bit 2 Bit 10

3 0 Framing Delta Bit 3 Bit 3 Bit 11

4 Loop Break Clear Bit 4 Bit 4 Bit 12

5 Xon Transmitter Data Bit 5 Bit 5 Bit 13

6 IR Transmitter Ring Bit 6 Bit 6 Bit 14

7 0 Error in Data Bit 7 Bit 7 Bit 15

4 5 6 7 0 DLAB = 1 1 DLAB =1

Register Register Register (LS) (MS)

MCR LSR MSR SCR DLL DLM

Terminal Ready Clear

Ready (DR) to Send
(DTR) (DCTS)

to Send Error Data

(RTS) (OE) Set Ready

(DDSR)

Error Edge Ring

0: INT Enable (PE) Indicator

1: INT Disable (TERI)

*1

Error Data

(FE) Carrier Detect

(DDCD)

Interrupt to Send

(BI) (CTS)

Any Holding Set

*2 Register Ready

(THRE) (DSR)

Enable Empty Indicator

*2 (TEMT) (RI)

FIFO Carrier

Detect

*1 : See " Using Interrupts ".
*2 : Each bit is 0 fixations in 16552.

COM-2(PCI), COM-4(PCI), COM-8(PCI) 53

I/O Ports and Registers

134.5

Baud Rate Selection

The board contains a 16552 equivalent (16654 equivalent on the
COM-8(PCI)) controller IC with a software-selectable 3.6864MHz
clock input. The 16552 equivalent contains an internal baud rate
generator that allows the baud rate to be specified by software.
The ACE can divide the selected clock input (1.8432 or

3.6864MHz) by any value between 1 and (216-1). The output
frequency of the baud rate generator is 16 times the specified baud
rate.

Divisor = clock frequency / (Baud rate x 16)

Two 8-bit division registers store the division ratio as a 16-bit
binary value. These division registers need to be set when
initializing to ensure reliable baud rate generator operation.

Note!

For selecting the clock signal (1.8423 or 3.6864 MHz), see the
"Interrupt Vector Register" section.

Table 5.3. Baud Rate and Divisors

Desired Clock = 1.8432MHz Clock = 3.6864MHz

baud rate Divisor Percent error Divisor Percent error

50 2304 - 4608 ­75 1536 - 3072 -

110 1047 0.026 2094 0.03

150 768 - 1536 ­300 384 - 768 -

600 192 - 384 ­1200 96 - 192 ­1800 64 - 128 ­2000 58 0.68 115 0.17
2400 48 - 96 ­3600 32 - 64 ­4800 24 - 48 ­7200 16 - 32 ­9600 12 - 24 -

14400 8 - 16 ­19200 6 - 12 ­28800 4 - 8 ­38400 3 - 6 -

57600 2 - 4 ­115200 1 - 2 ­230400 1 -

857 0.058 1713 0.0005

COM-2(PCI), COM-4(PCI), COM-8(PCI)54

Interrupt Vector Register

COM-2(PCI)

I/O Ports and Registers

Figure 5.4. Interrupt Vector Register <COM-2(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 55

I/O Ports and Registers

COM-4(PCI)

Figure 5.5. Interrupt Vector Register <COM-4(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI)56

COM-8(PCI)

I/O Ports and Registers

Figure 5.6. Interrupt Vector Register <COM-8(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 57

I/O Ports and Registers

Using Interrupts

When in use, the interrupts from all channels are handled via the
same interrupt request line. When an interrupt occurs on a channel,
the interrupt vector register (IVR) is latched.

When an interrupt is received, the interrupt service routine can read
the IVRs to determine which channel generated the interrupt.
After the interrupt service routine starts, the IVR must be read again
before the interrupt service routine returns to check for pending
interrupts.

The ACE has internal registers to enable its own interrupts and to
determine which channel generated an interrupt. For details on
how to use these registers, refer to the 16552 or 16654 data sheet
from Texas Instruments or other manufacturer.

When the power is turned on, the ACE master reset sets the OUT1
signal HIGH. This automatically enables each channel to generate
interrupts. For channels on which interrupts are not used, write
"1" to bit D2 of the modem control register (MCR). (This sets the
OUT1 signal to LOW.) In addition to allowing interrupts to be
enabled independently for each channel, the board has a global
interrupt enable. The global interrupt enable determines whether
to make the PCI bus and selected IRQ line active or not. As the
global interrupt enable is disabled at power-up, it must be enabled
before using the board. To enable, write "1" to bit D7 of the IVR.
Similarly, write "0" to disable.

COM-2(PCI), COM-4(PCI), COM-8(PCI)58

Figure 5.7. Interrupt Output Control Circuit

I/O Ports and Registers

COM-2(PCI), COM-4(PCI), COM-8(PCI) 59

I/O Ports and Registers

COM-2(PCI), COM-4(PCI), COM-8(PCI)60

6. System Reference

Circuitry Diagrams

LT1137A

Figure 6.1. Circuitry Diagrams

System Reference

TxD, RTS, DTR

RxD, CTS, DSR

COM-2(PCI), COM-4(PCI), COM-8(PCI) 61

System Reference

*1 :

*2 :

*3 :

Specifications

COM-2(PCI)
Table 6.1. Specification < COM-2(PCI)>

Number of Channels
Input Type RS-232C
Transfer Method Asynchronous serial transfer
Baud Rate 50 - 230,400bps *1 *2

Data Length

Parity Check Even, Odd, Non-parity *1
Controller Chip 16552 or equivalent
Distance 15m Max.
Interrupt Requests 1 level *3
I/O Address 8 bits x 32 ports
Power Consumption +5VDC, 250mA Max.
Operating Temperature 0 - 50°C
Storage Temperature -20 - 60°C
Relative Humidity 20 - 90% (non-condensing)
Dimension 122.0×107.0×18.5mm (4.7" x 4.2" x 0.7")
Weight 100g

These items can be set by software.

For details, refer to the data sheet for the TL16552

equivalent product and see "Baud Rate Setting."

Data transmission at high speed may not be performed

normally depending on the environment including the type

of status of connected external device and the cable length.

A single interrupt signal "INTA" is output as a collection

of interrupt input signals from two channels.

Item Specification

2

5, 6, 7, 8 bits
1, 1.5, 2 stop bits *1

Board Dimensions

COM-2(PCI), COM-4(PCI), COM-8(PCI)62

COM-4(PCI)

*1 :

*2 :

*3 :

Table 6.2. Specification < COM-4(PCI)>

Item Specification
Number of Channels
Input Type RS-232C
Transfer Method Asynchronous serial transfer
Baud Rate 50 - 230,400bps *1 *2

Data Length

Parity Check Even, Odd, Non-parity *1
Controller Chip 16552 or equivalent
Distance 15m Max.
Interrupt Requests 1 level *3
I/O Address 8 bits x 32 ports
Power Consumption +5VDC, 500mA Max.
Operating Temperature 0 - 50°C
Storage Temperature -20 - 60°C
Relative Humidity 20 - 90% (non-condensing)
Dimension 122.0×107.0×18.5mm (4.7" x 4.2" x 0.7")
Weight 130g

These items can be set by software.
For details, refer to the data sheet for the TL16552
equivalent product and see "Baud Rate Setting."
Data transmission at high speed may not be performed
normally depending on the environment including the type
of status of connected external device and the cable length.
A single interrupt signal "INTA" is output as a collection
of interrupt input signals from four channels.

4

5, 6, 7, 8 bits
1, 1.5, 2 stop bits *1

System Reference

Board Dimensions

COM-2(PCI), COM-4(PCI), COM-8(PCI) 63

System Reference

*1 :

*2 :

*3 :

COM-8(PCI)
Table 6.3. Specification < COM-8(PCI)>

Number of Channels
Input Type RS-232C
Transfer Method Asynchronous serial transfer
Baud Rate 50 - 230,400bps *1 *2

Data Length

Parity Check Even, Odd, Non-parity *1
Controller Chip 16654 or equivalent
Distance 15m Max.
Interrupt Requests 1 level *3
I/O Address 8 bits x 64 ports
Power Consumption +5VDC, 600mA Max.
Operating Temperature 0 - 50°C
Storage Temperature -20 - 60°C
Relative Humidity 20 - 90% (non-condensing)
Dimension 122.0×107.0×18.5mm (4.7" x 4.2" x 0.7")
Weight 140g

Item Specification

8

5, 6, 7, 8 bits
1, 1.5, 2 stop bits *1

These items can be set by software.
For details, refer to the data sheet for the TL16654
equivalent product and see "Baud Rate Setting."
Data transmission at high speed may not be performed
normally depending on the environment including the type
of status of connected external device and the cable length.
A single interrupt signal "INTA" is output as a collection
of interrupt input signals from eight channels.

Board Dimensions

COM-2(PCI), COM-4(PCI), COM-8(PCI)64

Block Diagrams

COM-2(PCI)

System Reference

Figure 6.2. Block Diagrams <COM-2(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 65

System Reference

COM-4(PCI)

Figure 6.3. Block Diagrams <COM-4(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI)66

COM-8(PCI)

System Reference

Figure 6.4. Block Diagrams <COM-8(PCI)>

COM-2(PCI), COM-4(PCI), COM-8(PCI) 67

System Reference

COM-2(PCI), COM-4(PCI), COM-8(PCI)68

7. Index

Index

B

Baud Rate, 54
Block Diagrams, 65, 66, 67
Board ID, 10
Board Setup, 11

C

CCU-78F/25M, 45
Checking resources, 14, 17, 24, 28, 31
Circuitry Diagrams, 61
Component Locations, 7, 8, 9
Connection Procedure, 40

F

Features, 2

H

L

Liability, 3

M

MS-DOS, 32

O

Obtain Service, 3

P

PCE37/25PS, 43
PCE37/9PS, 41
PCE78/25PS, 44
PCE78/9PS, 42

R

Register Address, 52

Handling Precautions, 4

I

I/O Port Assignment, 49
I/O Ports and Registers, 51
Interface Connector, 35
Interrupt Vector Register, 55, 56, 57
Introduction, 1

COM-2(PCI), COM-4(PCI), COM-8(PCI) 69

S

Setting the Board ID, 10
Specifications, 62
Support software, 1, 2
System Reference, 62, 63, 64

Index

U

Using Interrupts, 58

W

Warranty, 3
Windows 2000, 25
Windows 3.1, 32
Windows 95, 19
Windows 98, 15
Windows Me, 12
Windows NT, 30

COM-2(PCI), COM-4(PCI), COM-8(PCI)70

A-41-709

000829 [981225]

LZC1751

CONTEC Group

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A-46-368 Ver. 2003. 07. 28