UNIDENTIFIED
PRECISION 286 TURBO
Processor | 80286 (exact location unidentified) |
Processor Speed | 10/12MHz |
Chip Set | VLSI |
Max. Onboard DRAM | 4MB |
Cache | None |
BIOS | AMI/Award/Phoenix |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 (exact location unidentified) |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J13 | Turbo LED | CN22 |
Speaker | J23 | Reset switch | CN23 |
Turbo switch | CN20 | Power LED & keylock | CN24 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
Monitor type select color | J3 | Closed | |
Monitor type select monochrome | J3 | Open | |
Wait state select 0 wait states | J11 | Closed | |
Wait state select 1 wait state | J11 | Open | |
Parity enabled | J12 | Closed | |
Parity disabled | J12 | Open |
DRAM CONFIGURATION | |||||
Size | Bank 0 | Bank 0A | Bank 0B | Bank 1 | Bank 1A |
512KB | (8) 41256 | NONE | NONE | (8) 41256 | NONE |
512KB | NONE | (2) 44256 | NONE | NONE | (2) 44256 |
640KB | (8) 41256 | NONE | NONE | (8) 41256 | NONE |
640KB | NONE | (2) 44256 | NONE | NONE | (2) 44256 |
1MB | (8) 41256 | NONE | NONE | (8) 41256 | NONE |
1MB | NONE | (2) 44256 | NONE | NONE | (2) 44256 |
2MB | (8) 411000 | NONE | NONE | (8) 411000 | NONE |
4MB | (8) 411000 | NONE | NONE | (8) 411000 | NONE |
DRAM CONFIGURATION (CON’T) | |||||
Size | Bank 1B | Bank 2 | Bank 2A | Bank 3 | Bank 3A |
512KB | NONE | NONE | NONE | NONE | NONE |
512KB | NONE | NONE | NONE | NONE | NONE |
640KB | NONE | (8) 4164 | NONE | (8) 4164 | NONE |
640KB | NONE | NONE | (2) 4464 | NONE | (2) 4464 |
1MB | NONE | (8) 41256 | NONE | (8) 41256 | NONE |
1MB | NONE | NONE | (2) 44256 | NONE | (2) 44256 |
2MB | NONE | NONE | NONE | NONE | NONE |
4MB | NONE | (8) 411000 | NONE | (8) 411000 | NONE |
Note: See table below for parity configuration. |
DRAM PARITY CONFIGURATION | ||||
Size | P 0 | P 1 | P 2 | P 3 |
512KB | (1) 41256 | (1) 41256 | NONE | NONE |
512KB | NONE | NONE | NONE | NONE |
640KB | (1) 41256 | (1) 41256 | (1) 4164 | (1) 4164 |
640KB | NONE | NONE | NONE | NONE |
1MB | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 |
1MB | NONE | NONE | NONE | NONE |
DRAM CONFIGURATION (SIMM) | ||
Size | Bank 0B | Bank 1B |
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 JUMPER CONFIGURATION | |||
Size | J6 | J7 | J8 |
512KB | Closed | Closed | Closed |
640KB | Closed | Closed | Open |
1MB | Closed | Open | Closed |
2MB | Closed | Open | Open |
4MB | Open | Closed | Closed |