UNIDENTIFIED
486SC-H
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/128KB |
|
BIOS |
AMI |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
J1 |
Speaker |
J4 |
|
Turbo switch |
J2 |
Power LED & keylock |
J5 |
|
Reset switch |
J3 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CPU clock speed select 1x |
J8 |
pins 1 & 2 closed |
|
CPU clock speed select 2x |
J8 |
pins 2 & 3 closed | |
|
» |
Monitor type select monochrome/EGA/VGA |
J9 |
Open |
|
Monitor type select color |
J9 |
Closed | |
|
» |
Cache wait state select 1 wait state |
J12 |
Open |
|
Cache wait state select 0 wait states |
J12 |
pins 3 & 4 closed | |
|
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) 256K x 9 |
(4) 1M x 9 |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K 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 |
TAG |
|
32KB |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
(1) 8K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JS1 |
JS2 |
JS3 |
JS4 |
|
32KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |
|
Type |
J7 |
|
80486SX |
pins 1 & 2 closed |
|
80487SX |
pins 2 & 3 closed |
|
80486DX |
pins 2 & 3 closed |
|
80486DX2 |
pins 2 & 3 closed |