| IC number | Manufacturer | Documentation |
|---|---|---|
| i80287 (80287) | Intel | Not available |
| IC number | Package | CBM part number | CBM part description |
|---|---|---|---|
| C80287, D80287 | 40-pin Cermic DIP | 380282-03 | IC, 80287 |
| Device | Position | Package |
|---|---|---|
| A2286 | U2 (not installed) | DIP |
| PC30-III board rev. 1 | U302 (not installed) | DIP |
| PC30-III board rev. 8 | U302 (not installed) | DIP |
| PC40-III | ||
| SL286/SL386SX CPU card DB2 | U104 (not installed) | DIP |
| Pin | Type | Name | Signal name | ||
|---|---|---|---|---|---|
| A2286 | PC30-III, PC40-III | SL286 CPU card | |||
| 1..2 | Input | _S1.._S0 | S1..S0 | unused | |
| 3 | Input | COD/_INTA | connected to pin 66 of 80286 | unused | |
| 4 | N/C | N.C. | unused | ||
| 5..8 | I/O | D15..D12 | D15..D12 | ||
| 9 | Power | VCC | +5V | VCC | |
| 10 | Power | VSS | GND | ||
| 11..12 | I/O | D11.D10 | D11..D10 | ||
| 13 | N/C | N.C. | unused | ||
| 14..23 | I/O | D9..D0 | D9..D0 | ||
| 24 | Output | PEREQ | connected to pin 61 of 80286 | ||
| 25 | Output | _BUSY | _BUSY287 | NBUSY' | NBUSYNPX |
| 26 | Output | _ERROR | ERROR | NERROR' | NERRORNPX |
| 27 | Input | _NPRD | _IOR | NIOR' | NIOR |
| 28 | Input | _NPWR | _IOW | NIOW' | NIOW |
| 29 | Input | CMD0 | SYSA1 | BADDR1 | BA1 |
| 30 | Power | VSS | GND | ||
| 31 | Input | CMD1 | SYSA2 | BADDR2 | BA2 |
| 32 | Input | CLK | CPUCLK via JS7D | CPUCLK | 287CLK |
| 33 | Input | NPS2 | SYSA4 | BADDR4 | BA4 |
| 34 | Input | _NPS1 | _NPCS | NNPCS' | NNPCS |
| 35 | Input | RESET | NPRST | RESNPX | |
| 36 | Input | _PEACK | connected to pin 6 of 80286 | ||
| 37 | Input | CLK286 | CPUCLK | unused | |
| 38 | Input | HLDA | HLDA | unused | |
| 39 | Input | CKM | GND via JS7B | GND | CKM_FU_JP |
| 40 | Input | _READY | READY | unused | |
Copyright © 2003-2004 Ronald van Dijk - All rights reserved
Last update: 20 September 2004