UNIDENTIFIED 4386-VC-V Processor 80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set VIA Max. Onboard DRAM64/128MB (depends on CPU installed) Cache 32/64/128/256KB BIOS Award Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED J6 Speaker J9 Turbo switch J7 Power LED & keylock J10 Reset switch J8 32-bit VESA local bus SL1 & SL2 slots USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select J1 Open monochrome/EGA/VGA Monitor type select color J1 Closed » CMOS memory normal operation J2 Open CMOS memory clear J2 Closed » Factory configured - do not alter JC5 N/A » Factory configured - do not alter JC6 N/A » Factory configured - do not alter JK1 N/A » NPU synchronous with CPU JN1 pins 1 & 2 closed NPU asynchronous with CPU JN1 pins 2 & 3 closed Note: The location of J1 & J2 are unidentified. DRAM CONFIGURATION (80386) 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) 256K x 9 (4) 4M x 9 17MB (4) 4M x 9 (4) 256K x 9 20MB (4) 1M x 9 (4) 4M x 9 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE DRAM CONFIGURATION (80486) 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) 256K x 9 (4) 4M x 9 17MB (4) 4M x 9 (4) 256K x 9 20MB (4) 1M x 9 (4) 4M x 9 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE 65MB (4) 256K x 9 (4) 16M x 9 65MB (4) 16M x 9 (4) 256K x 9 DRAM CONFIGURATION (80486 CON’T) Size Bank 0 Bank 1 68MB (4) 1M x 9 (4) 16M x 9 68MB (4) 16M x 9 (4) 1M x 9 80MB (4) 4M x 9 (4) 16M x 9 80MB (4) 16M x 9 (4) 4M x 9 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 0 TAG 1 32KB (4) 8K x 8 NONE (1) 8K x 8 (1) 8K x 8 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 32K x 8 Note: TAG 1 is alter RAM and may not be present. CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 JS4 JS5 JS6 32KB 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 64KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JI0 JI1 JI2 JI3 JI4 JI5 80386DX 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486SX 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 80487SX 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 CX486DLC 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 80486DX2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins desingated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JI6 JI7 JC1 JC2 JC3 JC4 80386DX 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 Open 80486SX 1 & 2 1 & 2 2 & 3 2 & 3 Open Open 80487SX 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 Open CX486DLC 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2, 3 & 4, 5 & 6 80486DX 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Open 80486DX2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Open Note: Pins desingated should be in the closed position. CPU SPEED CONFIGURATION Speed JK2 JK3 JK4 20MHz pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 25MHz pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 33MHz (80386 & pins 2 & 3 pins 1 & 2 pins 2 & 3 CX486) closed closed closed 33MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 40MHz (80386 & pins 2 & 3 pins 1 & 2 pins 2 & 3 CX486) closed closed closed 50iMHz pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 50MHz pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 66iMHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed VESA WAIT STATE CONFIGURATION Wait states JV2 0 wait states pins 1 & 2 closed 1 wait state pins 2 & 3 closed BUS SPEED CONFIGURATION CPU speed JV1 <= 33MHz pins 1 & 2 closed > 33MHz pins 2 & 3 closed