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# 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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+----------+-----------------------+----------|
| Power LED & | J3 | Reset switch | J7 |
| keylock | | | |
|--------------+----------+-----------------------+----------|
| Speaker | J4 | 32-bit VESA local bus | S1 |
| | | slot | |
|--------------+----------+-----------------------+----------|
| Turbo LED | J5 | 32-bit VESA local bus | S2 |
| | | slot | |
|--------------+----------+-----------------------+----------|
| Turbo switch | J6 | 32-bit VESA local bus | S3 |
| | | slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| ยป | 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 |
|------------------------------------------------------------|
| 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 |
|------------------------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP9 | JP16 |
|--------------------+------------------+--------------------|
| < 33MHz | Open | pins 1 & 2 closed |
|--------------------+------------------+--------------------|
| > 33MHz | Closed | pins 2 & 3 closed |
+------------------------------------------------------------+