UNIDENTIFIED
OPTI 486-25/33
Processor | 80486SX |
Processor Speed | 25/33 |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/128KB (external cache card) |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit external memory card, 32-bit external cache card |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Power LED & keylock | J27 |
Turbo LED | J25 | Reset switch | SW1 |
Speaker | J26 | 32-bit external memory card | SL1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP2 | Closed |
Monitor type select monochrome | JP2 | Open | |
» | Cache enabled | JP5, JP6 | Open |
Cache disabled | JP5, JP6 | Closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
3MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
4MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
6MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | NONE |
7MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
16MB | (4) 4M x 9 | NONE | NONE | NONE |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
36MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | NONE |
40MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | (4) 1M x 9 |
Note:Banks 2 & 3 are located on the external memory card.. |
EXTERNAL CACHE CARD JUMPER CONFIGURATION | |||||
Size | JP1 | JP2 | JP3 | JP4 | JP5 |
64KB | 1 & 2 | Open | Open | 1 & 2 | 1 & 2 |
128KB | 2 & 3 | Closed | Closed | 2 & 3 | 2 & 3 |
Note:Pins designated should be in the closed position. JP1-5 are located on the external cache card. |