UNIDENTIFIED 4386-VC-HD Processor 80386DX/80486SX/80487SX/80486DX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set VIA Max. Onboard DRAM128MB Cache 64/128/256KB BIOS AMI/Award Dimensions 330mm x 218mm I/O Options None NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED J5 Speaker J8 Turbo switch J6 Power LED & keylock J9 Reset switch J7 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation J1 Open CMOS memory clear J1 Closed » Monitor type select J2 Open monochrome/EGA/VGA Monitor type select color J2 Closed » NPU synchronous with CPU J40 pins 1 & 2 closed NPU asynchronous with CPU J40 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 5MB (4) 256K x 9 (4) 1M x 9 17MB (4) 256K x 9 (4) 4M x 9 65MB (4) 256K x 9 (4) 16M x 9 4MB (4) 1M x 9 NONE 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 20MB (4) 1M x 9 (4) 4M x 9 68MB (4) 1M x 9 (4) 16M x 9 16MB (4) 4M x 9 NONE 17MB (4) 4M x 9 (4) 256K x 9 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 80MB (4) 4M x 9 (4) 16M x 9 64MB (4) 16M x 9 NONE 65MB (4) 16M x 9 (4) 256K x 9 68MB (4) 16M x 9 (4) 1M x 9 80MB (4) 16M x 9 (4) 4M x 9 128MB (4) 16M x 9 (4) 16M x 9 Note: 16M x 4 SIMMs can only be used if an 80486 is installed. CACHE CONFIGURATION Size Bank 0 Bank 1 M10 TAG 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: M10 is optional and does not have to be installed. CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 JS4 64KB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed 128KB pins 1 & 2 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed 256KB pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed closed CPU SPEED/TYPE CONFIGURATION Type JC1 JC2 JC3 80386DX-33 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80386DX-40 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486SX-20 pins 2 & 3 pins 2 & 3 Open closed closed 80486SX-25 pins 2 & 3 pins 2 & 3 Open closed closed 80486SX-33 pins 2 & 3 pins 2 & 3 Open closed closed 80487SX-20 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 80487SX-25 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 80486DX-20 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX-25 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX-33 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX-50 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX2-50 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX2-66 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed CPU SPEED/TYPE CONFIGURATION (CON’T) Type JK1 JK2 JK3 JK4 80386DX-33 pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed 80386DX-40 pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed 80486SX-20 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486SX-25 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486SX-33 pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed closed 80487SX-20 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80487SX-25 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX-20 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX-25 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX-33 pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX-50 pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX2-50 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80486DX2-66 pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed closed