SILICON STAR INTERNATIONAL, INC.
AH4
|
Processor |
80486SX/80486DX/CX486DX2/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
128MB |
|
Cache |
128/256/512KB |
|
BIOS |
Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Reset switch |
JW3 |
|
Green PC connector |
JP45 (pins 7 - 8) |
Turbo LED |
JW4 |
|
Power LED & keylock |
JW1 |
Turbo switch |
JW5 |
|
Speaker |
JW2 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
J2 |
Open |
|
|
CMOS memory normal operation |
JP16 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP16 |
pins 2 & 3 closed | |
|
|
Monitor type select color |
JP17 |
Closed |
|
Monitor type select monochrome |
JP17 |
Open | |
|
|
Factory configured - do not alter |
JP19 |
Open |
|
|
Factory configured - do not alter |
JP26 |
Open |
|
|
Factory configured - do not alter |
JP30 |
Open |
|
|
Factory configured - do not alter |
JP31 |
Open |
|
|
Factory configured - do not alter |
JP42 |
Open |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
2MB |
(1) 512K x 36 |
NONE |
NONE |
NONE |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
NONE |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 512K x 36 |
NONE |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
|
6MB |
(1) 512K x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
|
8MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 2M x 36 |
NONE |
NONE |
NONE |
|
10MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
NONE |
NONE |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
|
20MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 4M x 36 |
NONE |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
24MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
NONE |
|
24MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
|
32MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
32MB |
(1) 8M x 36 |
NONE |
NONE |
NONE |
|
36MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 16M x 36 |
NONE |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 8M x 36 |
NONE |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
65MB |
(1) 256K x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
68MB |
(1) 1M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
68MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
72MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 16M x 36 |
NONE |
|
72MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
80MB |
(1) 4M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
80MB |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
96MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 16M x 36 |
NONE |
|
96MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
96MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
128MB |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
128MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
256KB |
(4) 64K x 8 |
NONE |
(1) 32K x 8 |
|
512KB |
(4) 64K x 8 |
(4) 64K x 8 |
(1) 32K x 8 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP1 |
JP2 |
JP4 |
JP40 |
JP41 |
|
128KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
256KB |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
|
256KB |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
512KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
512KB |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | ||||||
|
Type |
JP8 |
JP9 |
JP11 |
JP12 |
JP14 |
JP15 |
|
80486SX |
2 & 3 |
Open |
Open |
3 & 4 |
2 & 3 |
4 & 5 |
|
CX486DX |
1 & 2 |
Closed |
2 & 3 |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
|
80486DX |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
2 & 3 |
4 & 5 |
|
80486DX2 |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
2 & 3 |
4 & 5 |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU TYPE CONFIGURATION (CONT) | |||||
|
Type |
JP21 |
JP22 |
JP24 |
JP25 |
JP46 |
|
80486SX |
2 & 3 |
1 & 2 |
Open |
Open |
2 & 3 |
|
CX486DX |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
|
80486DX |
2 & 3 |
1 & 2 |
Open |
Open |
2 & 3 |
|
80486DX2 |
2 & 3 |
1 & 2 |
Open |
Open |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP5 |
JP6 |
JP7 |
JP20 |
|
20MHz |
Closed |
Open |
Closed |
pins 1 & 2 closed |
|
25MHz |
Closed |
Closed |
Open |
pins 1 & 2 closed |
|
33MHz |
Open |
Closed |
Closed |
pins 1 & 2 closed |
|
40MHz |
Closed |
Open |
Open |
pins 2 & 3 closed |
|
50iMHz |
Closed |
Closed |
Open |
pins 1 & 2 closed |
|
66iMHz |
Open |
Closed |
Closed |
pins 1 & 2 closed |
|
BUS SPEEDCONFIGURATION | |
|
CPU speed |
JP29 |
|
<=33MHz |
pins 1 & 2 closed |
|
>33MHz |
pins 2 & 3 closed |
|
VESA WAIT STATE CONFIGURATION | |
|
Wait states |
JP28 |
|
0 wait states |
pins 1 & 2 closed |
|
1 wait state |
pins 2 & 3 closed |