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# QDI COMPUTER, INC.
UL486 P3 PC
Processor 80486SX/80486DX/80486DX2/80486DX4
Processor 25/33/40/50(internal)/50/66(internal)/100(internal)MHz
Speed
Chip Set FOREX
Max. 32MB
Onboard
DRAM
Cache 32/64/128/256KB
BIOS AMI
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (2), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J2 | Speaker | J8 |
|------------------+----------+-------------------+----------|
| Reset switch | J4 | Green PC | JP19 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Turbo LED | J5 | Green PC | JP20 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Turbo switch | J6 | Green PC | JP21 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Power LED & | J7 | 32-bit VESA local | SL1 - |
| keylock | | bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | J1 | Closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | J1 | Open |
|---+----------------------------------+--------+------------|
| » | Power good signal detect from | JP1 | pins 1 & 2 |
| | power supply | | closed |
|---+----------------------------------+--------+------------|
| | Power good signal detect from | JP1 | pins 2 & 3 |
| | board | | closed |
|---+----------------------------------+--------+------------|
| » | VESA card select normal | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | VESA card select Viper 9000 card | JP3 | pins 2 & 3 |
| | only | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | DRAM bank select Bank 0 or Banks | JP27 | pins 1 & 2 |
| | 1 & 2 used | | closed |
|---+----------------------------------+--------+------------|
| | DRAM bank select Banks 0, 1, & 2 | JP27 | pins 2 & 3 |
| | used | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | NONE | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 6MB | NONE | (1) 1M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 6MB | (4) 1M x 9 | NONE | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | NONE | (1) 2M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | NONE | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 24MB | NONE | (1) 4M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (4) 4M x 9 | NONE | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| 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 |
|------------------------------------------------------------|
| Note: The actual location of the cache banks may vary. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP9 | JP10 | JP11 | JP12 | JP13 |
|----------+---------+---------+---------+---------+---------|
| 32KB | 2 & 3 | Open | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 64KB | 1 & 2 | Open | Open | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 128KB | 2 & 3 | 2 & 3 | Open | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 256KB | 1 & 2 | 1 & 2 | Closed | Closed | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP14 | JP15 | U50 |
|-----------+--------+--------------+------------------------|
| 80486SX | Open | 2 & 3 | 3 & 6, 4 & 5 |
|-----------+--------+--------------+------------------------|
| 80486DX | 1 & 2 | 1 & 2, 3 & 4 | 3 & 6, 4 & 5 |
|-----------+--------+--------------+------------------------|
| 80486DX2 | 1 & 2 | 1 & 2, 3 & 4 | 3 & 6, 4 & 5 |
|-----------+--------+--------------+------------------------|
| 80486DX4 | 1 & 2 | 1 & 2, 3 & 4 | uses voltage converter |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP4 | JP5 | JP6 |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP22 |
|----------------------------+-------------------------------|
| 1.5x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 2x | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP16 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+