850ATARI.pdf

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Scanned in 1999 & Edited in 2000 by Walter Lojek from ABBUC e.V.

ATARI 850 Interface Module Owner's Manual - Page 2

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ATARI ® 850

Interface Module

Owner's Manual

Every effort has been made to ensure that this manual accurately documents

the Disk Operating System of the ATARI Personal Computer Systems. However,

due to the ongoing improvement and update of the computer software. ATARI,

INC. cannot guarantee the accuracy of printed material after the date of

publication, nor can ATARI accept responsibility for errors or omissions.

C015953 rev. 1

Re-Editor’s Note

This re-edited operator’s manual is available due to my never-ending

interest in ATARI 8-bit computer systems. Every effort is made to keep as

much information as possible in nearly original shape. However, neither

ATARI Writer nor ATARI printers were used to re-produce it and that is why

the layout is a little bit different. The advantages are fewer pages, less

typos, and better readability.

If you know someone who no longer has time to care for his 8-bit machine,

please, get him in touch with me. Currently, I am working to get a small

ATARI 8-bit museum up and running here in Germany. Therefore I appreciate

every piece of hardware or software for this collection.

Good Byte

Walter

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Scanned in 1999 & Edited in 2000 by Walter Lojek from ABBUC e.V.

ATARI 850 Interface Module Owner's Manual - Page 3

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Chapter 1 INTRODUCTION

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Unpacking

ATARI 850 [TM] Interface Module

ATARI 825 [TM] Printer

ATARI 830 [TM] Modem

Contents of this manual

How to use this manual

Chapter 2 SYSTEM CONFIGURATIONS

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Hoot-up

Power-up

Configurations using only the Printer Port of the ATARI 850 if you have

more than one ATARI printer

Configurations using only the ATARI 850 Modem with the 850

Configurations with Printer, Modem and Disk Drive

Configurations with the 410 Program Recorder

Chapter 3 SERIAL PORTS

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Overview

Default conditions

Limitations on Port configurations

Mode--block output or concurrent I/O

Block Output

Concurrent I/O Mode

Warnings and Restrictions

Configuring a Port

Setting the Baud, word size, stop bits and ready monitoring

Setting translation modes and parity

Controlling the outgoing lines DTR, RTS and XMT

Using a Port

Opening an R5-232-C Port

Closing an RS-232-C Port

Starting Concurrent I/O mode

Basic I/O statements GET, INPUT, PUT and PRINT

Other I/O commands from BASIC--LIST, SAVE, LOAD and ENTER

Forcing Early transmission of output blocks STATUS command

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Scanned in 1999 & Edited in 2000 by Walter Lojek from ABBUC e.V.

ATARI 850 Interface Module Owner's Manual - Page 4

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APPENDIX 1 What is R8-232-C?

APPENDIX 2 RS-232-C Port Error Conditions. Causes and Corrections

APPENDIX 3 Printer Port Error conditions. Causes and Corrections

APPENDIX 4 Meaning of (Error) Bits in Location 746 After STATUS command

APPENDIX 5 Setting the Baud, Word Size, Stop Bits and Ready Monitoring

APPENDIX 6 Translation and Parity Handling

APPENDIX 7 Controlling the Outgoing Lines DTR, RTS and XMT

APPENDIX 8 Starting Concurrent 110 mode

APPENDIX 9 User Programs

1. Programs to transfer BASIC source programs from computer to

computer.

2. Baudot Terminal Emulator

3. Example of Programming a Printer through an RS-232-C port

4. Another example of printer control through an RS-232-C port

5. Reading a digitizer: more input than BASIC can handle

APPENDIX 10 Code tables—ASCII, ATASCII, BAUDOT

APPENDIX 11 Principles of operation of the ATARI 850[tm] Interface Module

APPENDIX 12 Interface Module specifications

APPENDIX 13 ATARI 830[tm] Modem

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Scanned in 1999 & Edited in 2000 by Walter Lojek from ABBUC e.V.

ATARI 850 Interface Module Owner's Manual - Page 5

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TABLES and FIGURES

Table 2.1 Power-up procedure with various configurations

Table 2.2 Available control signals on ports 1, 2D 3 and 4

APPENDIX 1

Figure 1 Communications hoot-up showing role of RS-232-C

Table 1 The most common RS-232-C circuits

Table 2 RS-232-C electrical specifications

APPENDIX 4

Table 1 Decimal representation of the error bits in location 746

Table 2 Sense values added into location 747

APPENDIX 5

Table 1 Baud rate specifiers to add to Aux1 in XIO 36

Table 2 Word size specifiers to add to Aux1 in XIO 36

Table 3 Specifier for two stop bits to add to Aux1 in XIO 36

Table 4 Specifier to monitor DSR, CTS and CRX in Aux2 in XIO 36

APPENDIX 6

Table 1 Translation mode options added to Aux1 in XIO 38

Table 2 Input parity mode options added to Aux1 in XIO 38

Table 3 Output parity mode options added to Aux1 in XIO 38

Table 4 Append Linefeed options added to Aux1 in XIO 38

APPENDIX 7

Table 1 Control values for DTR added to Aux1 in XIO 34

Table 2 Control values for RTS added to Aux1 in XIO 34

Table 3 Control values for XMT added to Aux1 in XIO 34

APPENDIX 12

Figure 1. Pin functions of Serial Port No. 1 in ATARI 850[tm] Interface

Module (9-pin female connector).

Figure 2. Pin functions of Serial Ports No. 2 and 3 in ATARI 850

Interface Module (9-pin female connectors).

Figure 3. Pin functions of Serial Port No. 4 in ATARI 850[tm] Interface

Module (9-pin female connector).

Figure 4. Hook-up of Serial Port No. 4 with a 20mA loop device.

Figure 5. Pin functions of the Printer Port of the ATARI 850[tm]

Interface Module (15-pin female connector).

Figure 6. Printer Port timing diagram.

Figure 7. Schematic diagram of the ATARI 850[tm] Interface Module.

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Scanned in 1999 & Edited in 2000 by Walter Lojek from ABBUC e.V.

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