UNIDENTIFIED
MICRO 286-12
Processor | 80286 |
Processor Speed | 12MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 4MB |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | J1 | Turbo LED | J4 |
Reset switch | J2 | External battery | J7 |
Power LED & keylock | J3 | Turbo switch | J8 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | Wait states select 0 | W1 | pins 1 & 2 closed |
Wait state select 1 | W1 | pins 2 & 3 closed | |
» | Factory configured - do not alter | W2 | pins 2 & 3 closed |
» | BIOS type select 27256 | W6 | pins 1 & 2 closed |
BIOS type select 27128 | W6 | pins 2 & 3 closed | |
» | Monitor type select color | W7 | Closed |
Monitor type select monochrome | W7 | Open | |
» | Parity check enabled | W9 | pins 1 & 2 closed |
Parity check disabled | W9 | pins 2 & 3 closed | |
» | Bus speed select fast | SW1/2 | On |
Bus speed select normal | SW1/2 | Off |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
256KB 1 | (4) 44256 | NONE | NONE | NONE |
256KB | NONE | NONE | (2) 256K x 9 | NONE |
512KB 2 | (4) 44256 | NONE | NONE | NONE |
512KB | NONE | NONE | (2) 256K x 9 | (2) 256K x 9 |
512KB | NONE | NONE | (2) 1M x 9 | NONE |
640KB 3 | (4) 44256 | (4) 4464 | NONE | NONE |
640KB | NONE | NONE | (2) 256K x 9 | (2) 256K x 9 |
640KB | NONE | NONE | (2) 1M x 9 | NONE |
1MB 2 | (4) 44256 | (4) 44256 | NONE | NONE |
1MB | NONE | NONE | (2) 256K x 9 | (2) 256K x 9 |
2MB | NONE | NONE | (2) 1M x 9 | NONE |
4MB | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |
Note:If using only SIMMs don't install any chips in P-0 or P-1. Note 1 :If parity checking is enabled, install (2) 41256 in P-0Note 2 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 41256 in P-1Note 3 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 4164 in P-0 |
DRAM SWITCH CONFIGURATION | |||
Size | SW1/1 | SW1/2 | SW1/3 |
256KB 1 | On | On | On |
256KB | On | On | On |
512KB 2 | On | Off | On |
512KB | On | Off | On |
512KB | Off | On | On |
640KB 3 | On | On | Off |
640KB | On | On | Off |
640KB | Off | Off | On |
1MB 2 | On | Off | Off |
1MB | On | Off | Off |
2MB | Off | On | Off |
4MB | Off | Off | Off |