UNIDENTIFIED
80286 MAIN BOARD
Processor | 80286 |
Processor Speed | 8/12/16MHz |
Chip Set | UMC |
Max. Onboard DRAM | 4MB |
Cache | None |
BIOS | AMI |
Dimensions | 220mm x 220mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | JP1 | Reset switch | JP10 |
Power LED & keylock | JP4 | Turbo switch | JP12 |
External battery | JP8 | Speaker | JP13 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | BIOS type select 27128 | JP2 | pins 1 & 2 closed |
BIOS type select 27256 | JP2 | pins 2 & 3 closed | |
» | Monitor type select monochrome | JP3 | pins 1 & 2 closed |
Monitor type select color | JP3 | pins 2 & 3 closed | |
» | Battery type select internal | JP7 | pins 2 & 3 closed |
Battery type select external | JP7 | pins 1 & 2 closed | |
» | Power good signal detect from board | JP9 | pins 2 & 3 closed |
Power good signal detect from power supply | JP9 | pins 1 & 2 closed | |
» | Turbo switch disabled | JP12 | Closed |
Turbo switch enabled | JP12 | Open | |
» | Parity check disabled | JP14 | pins 2 & 3 closed |
Parity check enabled | JP14 | pins 1 & 2 closed |
DRAM CONFIGURATION (SIPP MEMORY) | ||
Size | Bank 0 | Bank 1 |
512KB | (2) 256K x 9 | NONE |
1MB | (2) 256K x 9 | (2) 256K x 9 |
2MB | (2) 1M x 9 | NONE |
4MB | (2) 1M x 9 | (2) 1M x 9 |
DRAM CONFIGURATION (DIP MEMORY) | ||||
Size | Bank 0A | Parity A | Bank 1B | Parity B |
512KB | (4) 44256 | (2) 41256 | NONE | NONE |
640KB | (4) 44256 | (2) 41256 | (4) 4464 | (2) 4164 |
1MB | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
DRAM CONFIGURATION (DIP & SIMM MEMORY) | ||||||
Size | Bank 0 | Bank 1 | Bank 0A | Parity A | Bank 1B | Parity B |
640KB | (2) 256K x 9 | NONE | (4) 4464 | (2) 4164 | NONE | NONE |
DRAM SWITCH CONFIGURATION | |||
Size | SW1/1 | SW1/2 | SW1/3 |
512KB (SIPP) | On | On | Off |
512KB (DIPP) | On | On | On |
640KB | On | Off | Off |
1MB | On | Off | On |
2MB | Off | On | On |
4MB | Off | Off | On |
DRAM WAIT STATE CONFIGURATION | |
Wait states | SW1/4 |
0 wait states | Off |
1 wait state | On |