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# QDI COMPUTER, INC.
VL/ISA-PB486P3
Processor 80486SX/SL80486SX/CX486M7/80486DX/SL80486DX/80486DX2/80486DX4/P24D/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Max. 64MB
Onboard
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 254mm x 220mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Turbo switch | J1 | Green PC connector | JP21 |
|---------------+----------+----------------------+----------|
| Power LED & | J2 | Green PC connector | JP32 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Turbo LED | J3 | Reset switch | S1 |
|---------------+----------+----------------------+----------|
| Speaker | JP18 | 32-bit VESA local | SL1 - |
| | | bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | JP26 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP26 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP30 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP30 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP44 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP46 | pins 2 & 3 |
| | alter | | closed |
|------------------------------------------------------------|
| Note: The locations of JP44 & JP46 are unknown. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 6MB | NONE | (1) 512K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 10MB | NONE | (1) 512K x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | NONE | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | NONE | (1) 1M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | NONE | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 64MB | NONE | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 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 | JP10 | JP11 | JP13 | JP24 | JP25 | JP36 |
|--------+--------+--------+-------+--------+--------+-------|
| 64KB | Open | Open | 2 & 3 | Closed | Closed | 2 & 3 |
|--------+--------+--------+-------+--------+--------+-------|
| 128KB | Open | Closed | 1 & 2 | Open | Open | Open |
|--------+--------+--------+-------+--------+--------+-------|
| 256KB | Closed | Closed | 2 & 3 | Closed | Closed | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP3 | JP4 | JP5 | JP6 | JP7 | JP8 |
|-----------+-------+--------+-------+-------+-------+-------|
| 80486SX | Open | Open | Open | 1 & 2 | Open | 2 & 3 |
|-----------+-------+--------+-------+-------+-------+-------|
| SL80486SX | Open | Open | Open | 1 & 2 | Open | 2 & 3 |
|-----------+-------+--------+-------+-------+-------+-------|
| CX486M7 | 1 & 2 | Open | 2 & 3 | 2 & 3 | Open | 1 & 2 |
| (1x) | | | | | | |
|-----------+-------+--------+-------+-------+-------+-------|
| CX486M7 | 1 & 2 | Open | 2 & 3 | 2 & 3 | Open | 1 & 2 |
| (2x) | | | | | | |
|-----------+-------+--------+-------+-------+-------+-------|
| 80486DX | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| SL80486DX | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| 80486DX2 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| 80486DX4 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| P24D (WB) | 1 & 2 | Open | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| P24D (WT) | 1 & 2 | Open | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|-----------+-------+--------+-------+-------+-------+-------|
| P24T | 1 & 2 | Closed | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP9 | JP12 |JP22 | JP23 |JP27 | JP40 | JP43 |
|------------+-----+------+-----+------+-----+------+--------|
| 80486SX |Open | Open |1 & 2| Open |Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| SL80486SX |Open | Open |1 & 2| Open |Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
|CX486M7 (1x)|1 & 2| Open |1 & 2| Open |1 & 2| Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
|CX486M7 (2x)|1 & 2| Open |1 & 2| Open |2 & 3| Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| 80486DX |Open | Open |1 & 2| Open |Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| SL80486DX |Open | Open |1 & 2| Open |Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| 80486DX2 |Open | Open |1 & 2| Open |Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| 80486DX4 |Open | Open |1 & 2| Open |Open |Closed| see |
| | | | | | | | below |
|------------+-----+------+-----+------+-----+------+--------|
| P24D (WB) |2 & 3|Closed|1 & 2|Closed|Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| P24D (WT) |2 & 3|Closed|1 & 2|Closed|Open | Open | Open |
|------------+-----+------+-----+------+-----+------+--------|
| P24T |2 & 3| Open |1 & 2| Open |Open | Open | Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP38 | JP39 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 40MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 75iMHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 100iMHz | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK SPEED CONFIGURATION (80486DX4) |
|------------------------------------------------------------|
| Speed | JP43 |
|----------------------------+-------------------------------|
| 2x | Open |
|----------------------------+-------------------------------|
| 2.5x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP1 |
|-------------------------------+----------------------------|
| 3.3v | Open |
|-------------------------------+----------------------------|
| 5v | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP33 |
|-------------------------------+----------------------------|
| 0 wait states | Open |
|-------------------------------+----------------------------|
| 1 wait state | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP34 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+