UNIDENTIFIED
HT 12 286
Processor | 80286 |
Processor Speed | 12/16MHz |
Chip Set | Headland |
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 switch | JP2 | Speaker | JP5 |
Turbo LED | JP3 | Power LED & keylock | JP6 |
Reset switch | JP4 | External battery | JP10 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP1 | N/A |
» | BIOS type select 27512 | JP7 | pins 1 & 2 closed |
BIOS type select 27256 | JP7 | pins 2 & 3 closed | |
» | NPU mode select synchronous with CPU | JP8 | pins 2 & 3 closed |
NPU mode select synchronous with oscillator installed at Y1 | JP8 | pins 1 & 2 closed | |
» | NPU speed select source/1 | JP9 | pins 1 & 2 closed |
NPU speed select source/3 | JP9 | pins 2 & 3 closed | |
» | CPU speed select 16MHz | JP11 | pins 2 & 3 closed |
CPU speed select 12MHz | JP11 | pins 1 & 2 closed | |
» | Monitor type select color | JP12 | Closed |
Monitor type select monochrome | JP12 | Open |
DRAM CONFIGURATION | ||||||
Size | Bank 0 | P-0 | Bank 1 | P-1 | Bank 2 | Bank 3 |
512KB | (4) 44256 | (2) 41256 | NONE | NONE | NONE | NONE |
640KB | (4) 44256 | (2) 41256 | (4) 4464 | (2) 41256 | NONE | NONE |
1MB | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 | NONE | NONE |
2MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | NONE |
4MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |