MICRO-STAR INTERNATIONAL CO., LTD.
MS-4131 VLB 486 AL2
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
ALI |
|
Max. Onboard DRAM |
112MB |
|
Cache |
128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JB |
32-bit VESA Local bus slot |
S2 |
|
32-bit VESA Local bus slot |
S1 |
32-bit VESA Local bus slot |
S3 |
|
PIN OUT CONFIGURATION |
|
|
Connector |
JFP |
|
Keylock |
pins 1 & 2 closed |
|
Power LED |
pins 3 & 5 closed |
|
Turbo LED |
pins 12 & 13 closed |
|
Turbo switch |
pins 15, 16, & 17 closed |
|
Reset |
pins 19 & 20 closed |
|
Speaker |
pins 7, 8, 9, & 10 closed |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
» |
Factory configured - do not alter |
JC1 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JC2 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JC3 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JC5 |
Closed |
|
» |
Factory configured - do not alter |
JC7 |
pins 1 & 2 closed |
|
» |
CPU PQFP not installed |
JC8 |
Closed |
|
|
CPU PQFP installed |
JC8 |
Open |
|
» |
Factory configured - do not alter |
JC9 |
N/A |
|
» |
Factory configured - do not alter |
JC10 |
Open |
|
» |
Monitor type select monochrome |
JP1 |
pins 1 & 2 closed |
|
|
Monitor type select color |
JP1 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP4 |
N/A |
|
CACHE CONFIGURATION |
|||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
128KB |
(4) 32K x 8 |
NONE |
(1)8K x 8/(1)16K x 8/(1)32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 8/(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION |
||
|
Size |
JS1 |
JS2 |
|
64KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
256KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION |
||
|
Type |
JC4 |
JC6 |
|
80486SX |
pins 1 & 2 closed |
Open |
|
80487SX |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
80486DX |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
80486DX2 |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU SPEED CONFIGURATION |
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|
Speed |
JK1 |
JK2 |
JK3 |
JK4 |
JP2 |
|
25MHz |
3 & 7 and 4 & 8 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
pins 1 & 2 |
|
33MHz |
1 & 2 and 4 & 8 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
pins 1 & 2 |
|
40MHz |
1 & 5 and 2 & 6 |
pins 2 & 3 |
pins 2 & 3 |
Closed |
pins 2 & 3 |
|
50i MHz |
3 & 7 and 4 & 8 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
pins 1 & 2 |
|
50MHz |
pins 2 & 6 |
pins 2 & 3 |
pins 2 & 3 |
Open |
pins 2 & 3 |
|
66i MHz |
1 & 2 and 4 & 8 |
pins 1 & 2 |
pins 1 & 2 |
Closed |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. |
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|
VESA WAIT STATE/BUS SPEED CONFIGURATION |
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|
CPU speed |
Wait states |
JP4/pins 1 & 2 |
JP4/pins 3 & 4 |
|
£ 33MHz |
0 wait states |
Open |
Open |
|
> 33MHz |
1 wait state |
Closed |
Closed |
|
DRAM CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
None |
None |
|
4MB |
None |
(1) 1M x 36 |
None |
|
4MB |
None |
None |
(1) 1M x 36 |
|
4MB |
(4) 1M x 9 |
None |
None |
|
5MB |
(4) 256K x 9 |
(1) 1M x 36 |
None |
|
5MB |
(4) 256K x 9 |
None |
(1) 1M x 36 |
|
8MB |
None |
(1) 1M x 36 |
(1) 1M x 36 |
|
8MB |
None |
(1) 2M x 36 |
None |
|
8MB |
None |
None |
(1) 2M x 36 |
|
9MB |
(4) 256K x 9 |
(1) 2M x 36 |
None |
|
9MB |
(4) 256K x 9 |
None |
(1) 2M x 36 |
|
12MB |
(4) 1M x 9 |
(1) 2M x 36 |
None |
|
12MB |
(4) 1M x 9 |
None |
(1) 2M x 36 |
|
16MB |
(4) 4M x 9 |
None |
None |
|
16MB |
(4) 4M x 9 |
(1) 1M x 36 |
None |
|
16MB |
None |
(1) 2M x 36 |
(1) 2M x 36 |
|
16MB |
(4) 4M x 9 |
None |
(1) 1M x 36 |
|
24MB |
(4) 4M x 9 |
(1) 2M x 36 |
None |
|
24MB |
(4) 4M x 9 |
None |
(1) 2M x 36 |
|
32MB |
None |
(1) 4M x 36 |
None |
|
32MB |
None |
None |
(1) 4M x 36 |
|
33MB |
(4) 256K x 9 |
(1) 4M x 36 |
None |
|
33MB |
(4) 256K x 9 |
None |
(1) 4M x 36 |
|
36MB |
(4) 1M x 9 |
(1) 4M x 36 |
None |
|
36MB |
(4) 1M x 9 |
None |
(1) 4M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
None |
|
48MB |
(4) 4M x 9 |
None |
(1) 4M x 36 |
|
DRAM CONFIGURATION (CONT.) |
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|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
64MB |
None |
(1) 8M x 36 |
None |
|
64MB |
None |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
None |
None |
(1) 8M x 36 |
|
65MB |
(4) 256K x 9 |
None |
(1) 8M x 36 |
|
65MB |
(4) 256K x 9 |
(1) 8M x 36 |
None |
|
68MB |
(4) 1M x 9 |
(1) 8M x 36 |
None |
|
68MB |
(4) 1M x 9 |
None |
(1) 8M x 36 |
|
88MB |
(4) 4M x 9 |
None |
(1) 8M x 36 |
|
88MB |
(4) 4M x 9 |
(1) 8M x 36 |
None |
|
96MB |
None |
(1) 8M x 36 |
(1) 4M x 36 |
|
97MB |
(4) 256K x 9 |
(1) 8M x 36 |
(1) 4M x 36 |
|
100MB |
(4) 1M x 9 |
(1) 8M x 36 |
(1) 4M x 36 |
|
112MB |
(4) 4M x 9 |
(1) 8M x 36 |
(1) 4M x 36 |