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# QDI COMPUTER, INC.
US486 P3
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 25/33/40/50(internal)/50/66(internal)MHz
Chip Set UMC
Maximum Onboard 128MB
Memory
Cache 32/64/128/256KB
BIOS AMI
Dimensions 250mm x 220mm
I/O Options 32-bit VESA local bus slots (3)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------+-------+---------------------+-----------|
| External battery | J2 | Speaker | JP12 |
|------------------+-------+---------------------+-----------|
| Reset switch | JP9 | Power LED & keylock | JP13 |
|------------------+-------+---------------------+-----------|
| Turbo switch | JP10 | 32-bit VESA local | SL1 - SL3 |
| | | bus slots | |
|------------------+-------+---------------------+-----------|
| Turbo LED | JP11 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|--------------------------------------+---------+-----------|
| ยป | Jumper information unavailable | JP4 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| 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 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | None |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K 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 |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 | JP5 |
|---------+----------+---------+---------+-------------------|
| 32KB | Open | Open | Open | Open |
|---------+----------+---------+---------+-------------------|
| 64KB | Closed | Open | Open | Open |
|---------+----------+---------+---------+-------------------|
| 128KB | Closed | Closed | Open | Pins 2 & 3 closed |
|---------+----------+---------+---------+-------------------|
| 256KB | Closed | Closed | Closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE |
|------------------------------------------------------------|
| Setting | JP6 | JP7 | JP8 | JP14 |
|----------------+---------------+--------+---------+--------|
| 80486SX | 2 & 3 | Open | Open | 1 & 2 |
|----------------+---------------+--------+---------+--------|
| 80487SX | 1 & 2, 3 & 4 | 1 & 2 | Open | 1 & 2 |
|----------------+---------------+--------+---------+--------|
| 80486DX-25/33 | 1 & 2, 3 & 4 | 2 & 3 | Open | 1 & 2 |
|----------------+---------------+--------+---------+--------|
| 80486DX-40/50 | 1 & 2, 3 & 4 | 2 & 3 | Closed | 2 & 3 |
|----------------+---------------+--------+---------+--------|
| 80486DX2 | 1 & 2, 3 & 4 | 2 & 3 | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED |
|------------------------------------------------------------|
| Setting | JP15 | JP16 | JP17 |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Open | Open |
+------------------------------------------------------------+