| IC number | Manufacturer | Documentation |
|---|---|---|
| µPD8237A | NEC | Not available |
| IC number | Package | Speed | CBM part number | CBM part description |
|---|---|---|---|---|
| µPD8237AC-5 | 40-pin DIP | 5 MHz | 380203-01 | IC, 8237A-5 DMA-controller 5MHz |
| Device | Positions | Package | Speed |
|---|---|---|---|
| A1060 main board | U32 | DIP | 5 MHz |
| PC-10 CPU board | U70 | DIP | 5 MHz |
| PC-10 combined board | U14 | DIP |
| Pin | Type | Name |
|---|---|---|
| 1 | I/O | IOR_ |
| 2 | I/O | IOW_ |
| 3 | Output | MEMR_ |
| 4 | Output | MEMW_ |
| 5 | Input | PIN5 |
| 6 | Input | READY |
| 7 | Input | HLDA |
| 8 | Output | ADSTB |
| 9 | Output | AEN |
| 10 | Output | HRQ |
| 11 | Input | CS_ |
| 12 | Input | CLK |
| 13 | Input | RESET |
| 14..15 | Output | DACK2..DACK3 |
| 16..19 | Input | DREQ3..DREQ0 |
| 20 | Power | VSS |
| 21..23 | I/O | DB7..DB5 |
| 24..25 | Output | DACK1..DACK0 |
| 26..30 | I/O | DB4..DB0 |
| 31 | Power | VCC |
| 32..35 | I/O | A0..A3 |
| 36 | I/O | EOP_ |
| 37..40 | Output | A4..A7 |
Copyright © 2004 Ronald van Dijk - All rights reserved
Last update: 20 March 2004