UNIDENTIFIED
S 286 SYSTEM BOARD
Processor | 80286 |
Processor Speed | 6/10/12/16MHz |
Chip Set | VLSI |
Video Chip Set | None |
Maximum Onboard Memory | 4MB |
Maximum Video Memory | None |
Cache | None |
BIOS | Award/Phoenix |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | J19 | Turbo switch | JP4 |
Power LED & keylock | J20 | Turbo LED | JP5 |
External battery | J21 | Reset switch | JP6 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | DSP/2 | On |
EMS port address select 0E8H - 0EFH | DSP/4 | On | |
EMS port address select 098H - 09FH | DSP/4 | Off | |
» | Factory configured - do not alter | JP2 | Unidentified |
BIOS type select Phoenix | JP7 | Pins 1 & 2 closed | |
BIOS type select Award | JP7 | Pins 2 & 3 closed | |
EMS type select extended mode | JP8 | Open | |
EMS type select expanded mode | JP8 | Closed | |
» | Factory configured - do not alter | JP10 | Unidentified |
Wait state select 1 wait state | JP11 | Pins 1 & 2 closed | |
Wait state select 0 wait states | JP11 | Pins 2 & 3 closed | |
Monitor type select monochrome | SW1 | Pins 1 & 2 closed | |
Monitor type select color | SW1 | Pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
512KB | (18) 41256 | None |
640KB | (18) 41256 | (18) 4164 |
1MB | (18) 41256 | (18) 41256 |
1MB (EMS) | (18) 41256 | (18) 41256 |
2MB | (18) 411000 | None |
2MB (EMS) | (18) 411000 | None |
4MB | (18) 411000 | (18) 411000 |
4MB (EMS) | (18) 411000 | (18) 411000 |
DRAM SWITCH CONFIGURATION | |||
Size | DSP/6 | DSP/7 | DSP/8 |
512KB | On | On | On |
640KB | On | On | Off |
1MB | On | Off | On |
1MB (EMS) | On | Off | Off |
2MB | Off | On | On |
2MB (EMS) | Off | On | Off |
4MB | Off | Off | On |
4MB (EMS) | Off | Off | Off |
DRAM JUMPER CONFIGURATION | |
Size | J18 |
256KB | Pins 1 & 2 closed |
512KB | Pins 2 & 3 closed |
CLOCK SPEED SELECTION | ||
Speed | DSP/1 | JP1 |
Low | On | Pins 2 & 3 closed |
High | Off | Pins 2 & 3 closed |
Keyboard controlled | N/A | Pins 1 & 2 closed |
BIOS SELECTION | ||
Size | JP9 | DSP/5 |
27128 | Pins 1 & 2 closed | On |
27256 | Pins 2 & 3 closed | Off |
I/O WAIT STATE SELECTION | ||
Wait states | DSP/3 | JP3 |
4 | On | Pins 2 & 3 closed |
6 | Off | Pins 2 & 3 closed |
Keyboard controlled | N/A | Pins 1 & 2 closed |