UNIDENTIFIED
VLSI 89402-1
Processor | 80286 |
Processor Speed | 12MHz |
Chip Set | VLSI |
Video Chip Set | None |
Maximum Onboard Memory | 4MB |
Maximum Video Memory | None |
Cache | None |
BIOS | AMI/Award |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | JP10 | Power LED & keylock | JP15 |
Turbo switch | JP11 | External battery | JP17 |
Speaker | JP14 | Reset switch | JP21 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Monitor type select color | JP4 | Closed | |
Monitor type select monochrome | JP4 | Open | |
Turbo enabled | JP11 | Closed | |
Turbo disabled & switchable through keyboard (CRTL, ALT, +/-) | JP11 | Open | |
ROM wait state select 2 wait states | JP9 | Closed | |
ROM wait state select 1 wait state | JP9 | Open | |
» | Battery type select internal | JP16 | Closed |
Battery type select external | JP16 | Open | |
» | BIOS type select 27128 | JP18 | Open |
BIOS type select 27256 | JP18 | Closed | |
» | Fast mode enabled | JP19 | Closed |
Fast mode disabled | JP19 | Open | |
Wait state select 0 wait states | JP20 | Closed | |
Wait state select 1 wait state | JP20 | Open | |
» | Factory configured - do not alter | JP22 | Unidentified |
» | Factory configured - do not alter | JP23 | Unidentified |
Parity check disabled | JP24 | Pins 1 & 2 closed | |
Parity check enabled | JP24 | Pins 2 & 3 closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
512KB | (18) 41256 | None | None | None |
512KB | None | None | (2) 256K x 9 | None |
640KB | (18) 41256 | (18) 4164 | None | None |
1MB | (18) 41256 | (18) 41256 | None | None |
1MB | None | None | (2) 256K x 9 | (2) 256K x 9 |
2MB | None | None | (2) 1M x 9 | None |
2MB | (18) 411000 | None | None | None |
4MB | (18) 411000 | (18) 411000 | None | None |
4MB | None | None | (2) 1M x 9 | (2) 1M x 9 |
Note: The location of banks 0, 1, 2 & 3 are unidentified. |
DRAM JUMPER CONFIGURATION | |||
Size | JP1 | JP2 | JP3 |
512KB | Closed | Closed | Closed |
640KB | Closed | Open | Closed |
1MB | Closed | Closed | Open |
2MB | Closed | Open | Open |
4MB | Open | Closed | Closed |
CPU SPEED SELECTION | |
Speed | JP12 |
6/12MHz | Open |
8/12MHz | Closed |