ABIT COMPUTER CORPORATION FU3 Processor 80386SX Processor Speed 25/33MHz Chip Set C & T Max. Onboard DRAM 32MB Cache 32/64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX/3167 [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED D4 Power LED & keylock J19 External battery JP2 Turbo switch J50 Speaker J18 Reset switch J51 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not J21 Open alter » Fast gate A20 enabled J22 Closed Fast gate A20 disabled J22 Open » Monitor type select color J23 Closed Monitor type select monochrome J23 Open » CMOS memory normal operation J42 pins 2 & 3 closed CMOS memory clear J42 pins 1 & 2 closed » Factory configured - do not JP1 N/A alter 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 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 32KB (4) 8K x 8 NONE (2) 16K x 8 64KB (4) 8K x 8 (4) 8K x 8 (2) 16K x 8 128KB (4) 32K x 8 NONE (2) 64K x 8 256KB (4) 32K x 8 (4) 32K x 8 (2) 64K x 8 CACHE JUMPER CONFIGURATION Size J26 J27 J28 J29 J33 J34 J35 32KB 1 & 2 Open Open Closed Closed 1 & 2 2 & 3 64KB 1 & 2 1 & 2 Open Closed Closed Open 1 & 2 128KB 2 & 3 1 & 2 2 & 3 Closed Open 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 Open Open 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION( CON’T) Size J36 J37 J38 J39 J41 J52 J60 32KB 2 & 3 2 & 3 Open 2 & 3 Open 1 & 2 Open 64KB 2 & 3 2 & 3 1 & 2 1 & 2 Open 1 & 2 Open 128KB 1 & 2 1 & 2 2 & 3 2 & 3 Closed 2 & 3 Open 256KB 1 & 2 1 & 2 2 & 3 1 & 2 Closed 2 & 3 Closed Note: Pins designated should be in the closed position. The locations of J52 & J60 are unidentified.