The Retro Web PT-2 Printer Card Instructions
- August 27, 2024
- The Retro Web
Table of Contents
PRINTER CARD MANUAL
PT-2
® IBM PC, PC-XT, AT are registered trademarks of International Business Machines Corporation.
GENERAL DESCRIPTION
PI’2 Parallel Printer Adapter provides an interlace between the 8088/80286/80386-based personal comp-uter and parallel device such as the parallel printer. Eight bi ts of data are sent through, the 25-pin D type connector at a time, with the data.’ flow regulated by a set of clata controlling signals.
BOARD LAYOUT
1/0 ADDRESS & IRQ ASSIGNMENT
The I/0 address can be jumper-selected among LPTA, LPTB, LPTC (which have the base I/0 address 3BC, 378, and 278 respectively.)
| I/0 Address | JPl |
|---|---|
| 1 | 2 |
| 378* | ON |
| 278 | ON |
| 3BC | OFF |
“*” Factory Setting
The IRQ assignment ofPT2 can be jumper-selected among IRQ5, IRQ7.
| IRQ | JPl |
|---|---|
| 7 | 8 |
| IRQ5 | OFF |
| IRQ7* | ON |
“*” Factory Setting
PIN ASSIGNMENTS OF J1
| Printer | -Strobe | 1 | Printer Adapter |
|---|---|---|---|
| + Data Bit 1 | 2 | ||
| + Data Bit 2 | 3 | ||
| + Data Bit 3 | 4 | ||
| + Data Bit 4 | 5 | ||
| + Data Bit 5 | 6 | ||
| + Data Bit 6 | 7 | ||
| + Data Bit 7 | 8 | ||
| -Acknowledge | 10 | ||
| + Busy | 11 | ||
| + P. End (out of paper) | 12 | ||
| + Select | 13 | ||
| -Auto Feed | 14 | ||
| -Error | 15 | ||
| -Initialize Printer | 16 | ||
| -Select Input | 17 | ||
| Ground | 18-25 |
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to prOvide reasonable protection against harmful interfer ence when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy an~, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Opera tion of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.