SEANIX TECHNOLOGY, INC.
SB-SYM-486C
|
Processor |
80486SX/80486DX |
|
Processor Speed |
16/20/25/33/50MHz |
|
Chip Set |
Symphony |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J19 |
Turbo switch |
J21 (pins 3 & 4) |
|
Speaker |
J20 |
Reset switch |
J22 |
|
Turbo LED |
J21 (pins 1 & 2) | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select color |
W2 |
pins 1 & 2 closed |
|
Monitor type select monochrome |
W2 |
pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
W3 |
Open |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
3MB |
(4) 1M x 9 |
NONE |
|
4MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
5MB |
(4) 4M x 9 |
NONE |
|
6MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
7MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
8MB |
(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) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
W4 |
W5 |
W6 |
W7 |
W8 |
|
64KB |
2 & 3 |
Open |
1 & 2 |
1 & 2 |
2 & 3 |
|
128KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CACHE JUMPER CONFIGURATION (CONT) | |||||
|
Size |
W9 |
W15 |
W17 |
W19 |
W20 |
|
64KB |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
128KB |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CACHE JUMPER CONFIGURATION (CONT) | |
|
Setting |
W21 |
|
Cache installed (shows size at boot up) |
pins 1 & 2 closed |
|
Cache installed (does not show size at boot up) |
pins 1 & 2 closed |
|
Cache not installed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |||
|
Type |
W13 |
W14 |
W18 |
|
80486SX |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | |||||
|
Speed |
W1 |
W10 |
W11 |
W12 |
W16 |
|
16MHz |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
20MHz |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
25MHz |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
33MHz |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
50MHz |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||