FOREX COMPUTER CORPORATION 386/486 CACHE SYSTEM BOARD Processor 80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal) MHz Chip Set Forex Max. onboard DRAM32MB Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit local bus slot NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location External battery JP2 Speaker JP10 Reset switch JP8 Turbo switch JP15 Power LED & keylock JP9 32-bit Local bus slot S1 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not alter JP5 N/A » CMOS memory normal operation JP6 Closed CMOS memory clear JP6 Open 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 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 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 256KB (4) 32K x 8 (4) 32K x 8 (2) 8K x 8 CACHE JUMPER CONFIGURATION Size JP8A JP8B JP8C JP8E JP8F 64KB pins 2 & pins 1 & pins 1 & pins 2 & pins 1 & 2 3 2 2 3 128KB pins 1 & pins 2 & pins 2 & pins 1 & pins 1 & 2 2 3 3 2 256KB pins 2 & pins 1 & pins 1 & pins 1 & pins 2 & 3 3 2 2 2 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP7A JP7B JP7C JP7D 20MHz pins 2 & 3 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed 25MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed closed 33MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed 40MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed closed 50MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed 66MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 80MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed closed CPU TYPE CONFIGURATION Type W1B W1A - W1G W2A W2A W2C - W2H 80386DX pins 2 & pins 2 & pins 2 & pins 2 & pins 2 & 3 3 3 3 3 CX486DLC pins 2 & pins 2 & pins 2 & pins 2 & pins 2 & 3 3 3 3 3 80486 pins 1 & pins 1 & pins 1 & pins 1 & pins 1 & 2 2 2 2 2 Notes:Pins designated should be in the closed position. 80486 CPU TYPE CONFIGURATION Type JP12 JP13 JP30 80486SX pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 80487SX pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 80486DX pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed