UNIDENTIFIED 786 ACIO VESA MOTHERBOARD Processor 80386DX/CX486DLC/80486SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set Unknown Max. Onboard DRAM32MB Cache 64/128/256KB BIOS Unknown Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slots (2) NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J2 External battery J7 Turbo switch J4 Speaker J100 Turbo LED J5 32-bit VESA Local bus S1 slot Reset switch J6 32-bit VESA Local bus S2 slot USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color J3 Closed Monitor type select monochrome J3 Open » CMOS memory normal operation JMP3 pins 2 & 3 (Internal battery) closed » CMOS memory normal operation JMP3 pins 1 & 2 (External battery) closed CMOS memory clear JMP3 pins 2 & 4 closed » NPU enabled JMP4 pins 1 & 2 closed NPU disabled JMP4 pins 2 & 3 closed » Factory configured - do not JMP6 pins 1 & 4 alter closed » VESA local bus enabled JMP10 Open VESA local bus disabled JMP10 Closed 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) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 Note:The exact locations of Bank 0 & Bank 1 is unknown. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG/U26 TAG/U27 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:The exact locations of Bank 0 & Bank 1 is unknown. CACHE JUMPER CONFIGURATION Size JMP1A JMP1B JMP1C JMP8 64KB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed and 4 & 5 128KB pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed and 4 & 5 256KB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed and 5 & 6 Note:Pins designated should be in the closed position. The exact locations of Banks 0 & Bank 1 is unknown. CPU TYPE CONFIGURATION Type JMP2 JMP5 JMP7 JMP12 JMP13 80386DX Open Closed Open Open pins 2 & 3 and 5 & 6 CX486DLC Open Open Closed Closed pins 1 & 2 and 4 & 5 80486SX pins 1 & 2 Open Closed Closed pins 1 & 2 closed and 4 & 5 80486DX pins 2 & 3 Open Closed Closed pins 1 & 2 closed and 4 & 5 80486DX2 pins 2 & 3 Open Closed Closed pins 1 & 2 closed and 4 & 5 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JMP9 JMP14 80386DX/25MHz pins 1 & 5 and 2 & pins 1 & 2 closed 6 closed 80386DX/33MHz pins 1 & 5 and 4 & pins 1 & 2 closed 8 closed 80386DX/40MHz 1 & 5, 3 & 7 and 4 pins 1 & 2 closed & 8 closed 80486SX/50MHz pins 3 & 7 closed pins 2 & 3 closed 80486DX/25MHz pins 2 & 6 closed pins 1 & 2 closed 80486DX/33MHz pins 4 & 8 closed pins 1 & 2 closed 80486DX2/50i MHz pins 2 & 6 closed pins 2 & 3 closed 80486DX2/66i MHz pins 4 & 8 closed pins 1 & 2 closed