UNIDENTIFIED
ISA-S486
Processor | 80486SX/80486DX |
Processor Speed | 16/20/25/33/50MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256/1024KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | JP5 | Speaker | JP16 |
Turbo switch | JP10 | External battery | JP17 |
Turbo LED | JP11 | Reset switch | JP19 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP6 | Closed |
Monitor type select monochrome | JP6 | Open |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 1M x 9 | (4) 256K x 9 |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
17MB | (4) 4M x 9 | (4) 256K x 9 |
17MB | (4) 256K x 9 | (4) 4M x 9 |
20MB | (4) 1M x 9 | (4) 4M x 9 |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 128K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP22 | JP23 | JP24 | JP25 | JP34 |
64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
128KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CACHE JUMPER CONFIGURATION | ||
Size | JP100 | JP101 |
64KB | 2 & 4, 6 & 8, 10 & 12, 14 & 16 | 2 & 4, 6 & 8, 10 & 12, 14 & 16 |
128KB | 1 & 3, 5 & 7, 9 & 11, 13 & 15 | 1 & 3, 5 & 7, 9 & 11, 13 & 15 |
256KB | 2 & 4, 6 & 8, 10 & 12, 14 & 16 | 2 & 4, 6 & 8, 10 & 12, 14 & 16 |
1MB | 2 & 4, 6 & 8, 10 & 12, 14 & 16 | 2 & 4, 6 & 8, 10 & 12, 14 & 16 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||
CPU Type | JP12 | JP13 | JP14 |
80486SX | Open | pins 2 & 3 closed | Open |
80486DX | Closed | pins 1 & 2 closed | Closed |