PC BRAND VALUE SERIES 486 Processor 80386DX/80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)MHz 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 [Image] 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 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.