PC BRAND
VALUE SERIES 486
Processor | 80386DX/80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 25/33/40/50(internal)MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 32MB |
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 |
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 LED | PL14 |
Game interface | PL3 | VGA feature connector | PL19 |
Floppy drive interface | PL5 | Riser Card | SL1 |
Note: The location of jumpers PL9, PL12, PL14 are unidentified. |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP1 | N/A |
» | Factory configured - do not alter | JP2 | N/A |
» | Factory configured - do not alter | JP3 | N/A |
» | Factory configured - do not alter | JP3 | N/A |
» | Factory configured - do not alter | JP4 | N/A |
» | Factory configured - do not alter | JP5 | N/A |
» | Factory configured - do not alter | JP6 | N/A |
» | Factory configured - do not alter | JP7 | N/A |
» | Factory configured - do not alter | JP8 | N/A |
» | Factory configured - do not alter | JP9 | N/A |
» | Factory configured - do not alter | JP10 | N/A |
» | Factory configured - do not alter | JP11 | N/A |
» | Factory configured - do not alter | JP12 | N/A |
» | Factory configured - do not alter | JP13 | N/A |
» | Factory configured - do not alter | JP14 | N/A |
» | Factory configured - do not alter | JP15 | N/A |
» | Factory configured - do not alter | JP16 | N/A |
» | Factory configured - do not alter | JP17 | N/A |
» | Factory configured - do not alter | JP18 | N/A |
» | Factory configured - do not alter | JP19 | N/A |
» | Factory configured - do not alter | JP20 | N/A |
» | Factory configured - do not alter | JP21 | N/A |
» | Factory configured - do not alter | JP22 | N/A |
» | Factory configured - do not alter | JP23 | N/A |
» | Factory configured - do not alter | JP24 | N/A |
» | Factory configured - do not alter | JP25 | N/A |
» | Factory configured - do not alter | JP26 | N/A |
» | Factory configured - do not alter | JP27 | N/A |
» | Factory configured - do not alter | JP28 | N/A |
» | 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 states | W45 | Closed |
Cache wait state select 1 wait state | W45 | Open | |
» | 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 wait states | W55 | Closed |
On board VGA wait state select 1 wait state | W55 | Open | |
» | Factory configured - do not alter | W56 | N/A |
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 closed | Open | pins 1 & 2 closed | Closed |
80486SX-25 | pins 1 & 2 closed | Closed | pins 2 & 3 closed | Open |
80486DX-33 | pins 2 & 3 closed | Closed | pins 2 & 3 closed | Open |
80486DX2-50 | pins 2 & 3 closed | Closed | pins 2 & 3 closed | Open |
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 closed | pins 2 & 3 closed |
80486SX-25 | Closed | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX-33 | Closed | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX2-50 | Closed | Closed | pins 1 & 2 closed | pins 1 & 2 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. |