UNIDENTIFIED
VLSI-286
Processor | 80286 |
Processor Speed | 12MHz |
Chip Set | VLSI |
Max. Onboard DRAM | 4MB |
Cache | None |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J3 | Turbo switch | J20 |
Speaker | J18 | Power LED & keylock | J21 |
Reset switch | J19 | Turbo LED | J22 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | Closed |
Monitor type select monochrome | JP1 | Open | |
» | Battery type select internal | J3 | pins 2 & 3 closed |
Battery type select external | J3 | Closed | |
» | BIOS wait state select 1 wait state | JP6 | Open |
BIOS wait states select 2 wait states | JP6 | Closed | |
» | Oscillator select Y2 | JP9 | pins 1 & 2 closed |
Oscillator select Y1 | JP9 | pins 2 & 3 closed | |
» | BIOS type select 27256 | JP14 | Closed |
BIOS type select 27128 | JP14 | Open | |
» | DRAM wait state select 0 wait states | JP13 | Closed |
DRAM wait state select 1 wait states | JP13 | Open | |
» | CPU speed select switchable at keyboard | J20 | pins 1 & 2 closed |
CPU speed select forced high | J20 | pins 2 & 3 closed |
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 | (16) 4164 | (2) 4164 | NONE | NONE |
1MB | (4) 44256 | (2) 41256 | NONE | (2) 41256 | (4) 44256 | NONE |
2MB | NONE | (2) 411000 | NONE | NONE | NONE | (16) 411000 |
4MB | NONE | (2) 411000 | (16) 411000 | (2) 411000 | NONE | (16) 411000 |
DRAM JUMPER CONFIGURATION | |||
Size | JP3 | JP4 | JP5 |
512KB | Closed | Closed | Closed |
640KB | Closed | Closed | Open |
1MB | Closed | Open | Closed |
2MB | Closed | Open | Open |
4MB | Open | Closed | Closed |