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 |