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# PC BRAND
VALUE SERIES 486
Processor 80386DX/80486SX/80487SX/80486DX/80486DX2
Processor 25/33/40/50(internal)MHz
Speed
Chip Set Unidentified
Max. Onboard 32MB
DRAM
Cache 64/128/256/1024KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Parallel port, serial ports (2), VGA port, VGA
feature connector, floppy drive interface, IDE
interface, game interface, riser slot
NPU Options 80387DX/3167/4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| VGA port | CN1 | IDE interface | PL6 |
|---------------------+----------+----------------+----------|
| Parallel port | CN2 | Reset switch | PL9 |
|---------------------+----------+----------------+----------|
| Serial port 1 | CN3 | Turbo LED | PL12 |
|---------------------+----------+----------------+----------|
| Serial port 2 | CN4 | IDE interface | PL14 |
| | | LED | |
|---------------------+----------+----------------+----------|
| Game interface | PL3 | VGA feature | PL19 |
| | | connector | |
|---------------------+----------+----------------+----------|
| Floppy drive | PL5 | Riser Card | SL1 |
| interface | | | |
|------------------------------------------------------------|
| Note: The location of jumpers PL9, PL12, PL14 are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP2 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP6 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP10 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP11 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP12 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP13 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP14 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP15 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP16 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP17 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP18 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP19 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP20 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP21 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP22 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP23 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP24 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP25 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP26 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP27 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP28 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | External speaker enabled | PL20 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | External speaker disabled | PL20 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | System security enabled | W4 | Closed |
|---+----------------------------------+--------+------------|
| | System security disabled | W4 | Open |
|---+----------------------------------+--------+------------|
| » | Game port enabled | W13 | Open |
|---+----------------------------------+--------+------------|
| | Game port disabled | W13 | Closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | W19 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | W19 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | W20 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | W20 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | External speaker enabled | W28 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | External speaker disabled | W28 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON’T) |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | 80486 burst mode select 2-1-1-1 | W44 | Open |
|---+----------------------------------+--------+------------|
| | 80486 burst mode select 3-2-2-2 | W44 | Closed |
|---+----------------------------------+--------+------------|
| » | Cache wait state select 0 wait | W45 | Closed |
| | states | | |
|---+----------------------------------+--------+------------|
| | Cache wait state select 1 wait | W45 | Open |
| | state | | |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ5 | W49 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ7 | W49 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board VGA wait state select 0 | W55 | Closed |
| | wait states | | |
|---+----------------------------------+--------+------------|
| | On board VGA wait state select 1 | W55 | Open |
| | wait state | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W56 | N/A |
| | alter | | |
|------------------------------------------------------------|
| Note: The location of jumpers PL 20, W28, W44, & W45 are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W18 | W26 | W30 | W31 | W32 |
|----------+----------+----------+---------+--------+--------|
| None | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 1MB | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | W33 | W34 | W35 | W36 | W37 |
|----------+----------+----------+---------+--------+--------|
| None | Open | 1 & 2 | Open | Open | Open |
|----------+----------+----------+---------+--------+--------|
| 64KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 1 & 2 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | Open | 1 & 2 | Open | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | W38 | W39 | W40 | W41 | W42 |
|----------+----------+---------+--------+---------+---------|
| None | Open | Open | Open | Open | Open |
|----------+----------+---------+--------+---------+---------|
| 64KB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|----------+----------+---------+--------+---------+---------|
| 128KB | 1 & 2 | 1 & 2 | 1 & 2 | Closed | Open |
|----------+----------+---------+--------+---------+---------|
| 128KB | 1 & 2 | 1 & 2 | 1 & 2 | Closed | Closed |
|----------+----------+---------+--------+---------+---------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|----------+----------+---------+--------+---------+---------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | W43 | W46 | W68 | W69 |
|----------+-----------+--------+--------+-------------------|
| None | Open | Open | Open | Open |
|----------+-----------+--------+--------+-------------------|
| 64KB | Closed | Open | Open | Open |
|----------+-----------+--------+--------+-------------------|
| 128KB | Open | Open | Open | pins 1 & 2 closed |
|----------+-----------+--------+--------+-------------------|
| 128KB | Closed | Open | Open | Open |
|----------+-----------+--------+--------+-------------------|
| 256KB | Closed | Open | Open | pins 2 & 3 closed |
|----------+-----------+--------+--------+-------------------|
| 1MB | Closed | Open | Open | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W48 | W54 | W57 | W60 | W61 |
|--------------+---------+---------+---------+-------+-------|
| 80386DX-40 | 2 & 3 | 1 & 2 | Closed | 1 & 2 | 2 & 3 |
|--------------+---------+---------+---------+-------+-------|
| 80486SX-25 | 3 & 4 | 2 & 3 | Open | 2 & 3 | 1 & 2 |
|--------------+---------+---------+---------+-------+-------|
| 80486DX-33 | 3 & 4 | 2 & 3 | Closed | 1 & 2 | 2 & 3 |
|--------------+---------+---------+---------+-------+-------|
| 80486DX2-50 | 3 & 4 | 2 & 3 | Closed | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | W62 | W63 | W64 | W65 |
|--------------+--------------+--------+------------+--------|
| 80386DX-40 | pins 2 & 3 | Open | pins 1 & 2 | Closed |
| | closed | | closed | |
|--------------+--------------+--------+------------+--------|
| 80486SX-25 | pins 1 & 2 | Closed | pins 2 & 3 | Open |
| | closed | | closed | |
|--------------+--------------+--------+------------+--------|
| 80486DX-33 | pins 2 & 3 | Closed | pins 2 & 3 | Open |
| | closed | | closed | |
|--------------+--------------+--------+------------+--------|
| 80486DX2-50 | pins 2 & 3 | Closed | pins 2 & 3 | Open |
| | closed | | closed | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | W66 | W67 | W70 | W71 |
|-------------+--------+--------+---------------+------------|
| 80386DX-40 | Open | Open | pins 2 & 3 | pins 2 & 3 |
| | | | closed | closed |
|-------------+--------+--------+---------------+------------|
| 80486SX-25 | Closed | Closed | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
|-------------+--------+--------+---------------+------------|
| 80486DX-33 | Closed | Closed | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
|-------------+--------+--------+---------------+------------|
| 80486DX2-50 | Closed | Closed | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | W47 |
|------------------------------+-----------------------------|
| 1x | Closed |
|------------------------------+-----------------------------|
| 2x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Setting | W21 | W29 |
|------------------+--------------------+--------------------|
| LPT1 enabled | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| LPT2 disabled | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------------------------------------------------|
| Note: The location of W29 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| Setting | W17 | W22 |
|------------------+--------------------+--------------------|
| COM1 enabled | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM1 disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| Setting | W15 | W16 |
|------------------+--------------------+--------------------|
| COM2 enabled | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| COM2 disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ON BOARD VGA CONFIGURATION |
|------------------------------------------------------------|
| Setting | W14 | W50 |
|--------------------+-------------------+-------------------|
| Enabled | Open | Closed |
|--------------------+-------------------+-------------------|
| Disabled | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 4 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 4 | (2) 256K x 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W58 | W59 |
|--------------------+--------------------+------------------|
| 512KB | Closed | Open |
|--------------------+--------------------+------------------|
| 1MB | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: The location of pin 1 is unidentified. |
+------------------------------------------------------------+