UNIDENTIFIED
SI-433C1/SI-450C1
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
16/20/25/33/50MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
CN3 |
Power LED & keylock |
CN6 |
|
Reset switch |
CN4 |
Speaker |
CN7 |
|
Turbo switch |
CN5 |
Turbo LED |
LED2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Power good signal detect from board |
JP7 |
pins 1 & 2 closed |
|
Power good signal detect from power supply |
JP7 |
pins 2 & 3 closed | |
|
» |
CMOS memory normal operation |
JP17 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP17 |
pins 2 & 3 closed | |
|
» |
Monitor type select monochrome |
JP19 |
Open |
|
Monitor type select color |
JP19 |
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
DRAM JUMPER CONFIGURATION | ||
|
Setting |
JP20 |
JP21 |
|
Bank 0 |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
Bank 1 |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
CACHE CONFIGURATION | |||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U21) |
TAG (U22) |
TAG (U39) |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 4K x 4 |
(1) 4K x 4 |
NONE |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 4K x 4 |
(1) 4K x 4 |
(1) 16K x 4 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 16K x 4 |
(1) 16K x 4 |
(1) 16K x 4 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 4 |
(1) 16K x 4 |
(1) 16K x 4 |
|
CACHE JUMPER CONFIGURATION | |||||||||
|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
JP16 |
|
32KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
64KB |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
128KB |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||||||
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP4 |
JP5 |
JP6 |
|
80486SX |
pins 2 & 3 closed |
Open |
Open |
|
80487SX |
pins 1 & 2 closed |
Closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
Closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | |
|
Speed |
JP3 |
|
16MHz |
pins 2 & 3 closed |
|
20MHz |
pins 2 & 3 closed |
|
25MHz |
pins 2 & 3 closed |
|
33MHz |
pins 1 & 2 closed |
|
50MHz |
pins 1 & 2 closed |