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  |