PC WARE INTERNATIONAL, INC.
UMC 486 VESA BUS
|
Processor |
80486SX/CX487S/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/64/128/256KB |
|
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 |
|
Power LED & keylock |
J3 |
Reset switch |
J7 |
|
Speaker |
J4 |
32-bit VESA local bus slot |
S1 |
|
Turbo LED |
J5 |
32-bit VESA local bus slot |
S2 |
|
Turbo switch |
J6 |
32-bit VESA local bus slot |
S3 |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
|
Factory configured - do not alter |
J8 |
N/A |
|
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) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
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 |
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|
Size |
JP4 |
JP5 |
JP6 |
JP7 |
JP8 |
|
32KB |
None |
None |
None |
None |
None |
|
64KB |
Open |
pins 1 & 2 |
Open |
Closed |
Closed |
|
128KB |
pins 2 & 3 |
pins 2 & 3 |
Open |
Closed |
Closed |
|
256KB |
pins 1 & 2 |
pins 1 & 2 |
Open |
Closed |
Closed |
|
Note:Pins designated should be in the closed position. |
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|
CPU TYPE CONFIGURATION |
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|
Type |
JP3 |
JP13 |
JP14 |
|
80486SX |
N/A |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 |
|
CX487S |
Closed |
N/A |
N/A |
|
80487SX |
N/A |
Open |
pins 2 & 3 closed |
|
80486DX |
N/A |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 |
|
80486DX2 |
N/A |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 |
|
ODP486SX |
N/A |
pins 2 & 3 closed |
pins 1 & 2 and 3 & 4 |
|
Note:Pins designated should be in the closed position. |
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|
VESA BUS SPEED CONFIGURATION |
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|
Speed |
JP9 |
JP16 |
|
< 33MHz |
Open |
pins 1 & 2 closed |
|
> 33MHz |
Closed |
pins 2 & 3 closed |