ACHME COMPUTER, INC. MS-4131G (VLB 486 AL2G) Processor 80486SX/80487SX/CX486M7/AMD486DX/AMD486DXL/80486DX/80486DX2/ Pentium Overdrive Processor 20/25/33/40/50(internal)/50/66(internal)66MHz Speed Chip Set ALI Max. 64MB Onboard DRAM Cache 128/256/512KB BIOS AMI/Award/Phoenix Dimensions 260mm x 220mm I/O Options 32-bit VESA local bus slots (3), green PC connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery JB Reset switch JFP pins 19 - 20 Power LED & JFP pins 1 Green PC connector JG1 keylock -5 (monitor) Speaker JFP pins 7 - Green PC LED JG2 10 connector Turbo LED JFP pins 12 Green PC connector JG3 - 13 (sleep mode) Turbo switch JFP pins 15 32-bit VESA Local SL1 - SL3 - 17 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » On board battery installed JB pins 2 & 3 closed External battery installed JB pins 1 & 2, 3 & 4 closed » PQFP CPU disabled JC4 Closed PQFP CPU enabled JC4 Open » Factory configured - do not JC6 N/A alter » Monitor type select monochrome JP1 pins 1 & 2 closed Monitor type select color JP1 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB (4) 256K x 9 NONE NONE 1MB NONE (1) 256K x 36 NONE 1MB NONE NONE (1) 256K x 36 2MB NONE NONE (1) 512K x 36 2MB NONE (1) 512K x 36 NONE 2MB NONE (1) 256K x 36 (1) 256K x 36 2MB (4) 256K x 9 (1) 256K x 36 NONE 3MB (4) 256K x 9 (1) 256K x 36 (1) 256K x 36 3MB NONE (1) 256K x 36 (1) 512K x 36 4MB (4) 256K x 9 (1) 256K x 36 (1) 512K x 36 4MB (4) 1M x 9 NONE NONE 4MB NONE (1) 512K x 36 (1) 512K x 36 4MB NONE (1) 1M x 36 NONE 4MB NONE NONE (1) 1M x 36 5MB NONE (1) 256K x 36 (1) 1M x 36 5MB (4) 256K x 9 (1) 1M x 36 NONE 5MB (4) 1M x 9 (1) 256K x 36 NONE 6MB (4) 256K x 9 (1) 1M x 36 (1) 256K x 36 6MB (4) 256K x 9 (1) 256K x 36 (1) 1M x 36 6MB (4) 1M x 9 (1) 256K x 36 (1) 256K x 36 6MB NONE (1) 512K x 36 (1) 1M x 36 7MB (4) 256K x 9 (1) 1M x 36 (1) 512K x 36 7MB (4) 1M x 9 (1) 256K x 36 (1) 512K x 36 8MB NONE NONE (1) 2M x 36 8MB NONE (1) 2M x 36 NONE 8MB NONE (1) 1M x 36 (1) 1M x 36 8MB (4) 1M x 9 (1) 1M x 36 NONE 9MB (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 9MB (4) 1M x 9 (1) 256K x 36 (1) 1M x 36 9MB (4) 1M x 9 (1) 1M x 36 (1) 256K x 36 9MB NONE (1) 256K x 36 (1) 2M x 36 10MB (4) 1M x 9 (1) 1M x 36 (1) 512K x 36 10MB (4) 256K x 9 (1) 256K x 36 (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 10MB NONE (1) 512K x 36 (1) 2M x 36 12MB (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 12MB NONE (1) 1M x 36 (1) 2M x 36 13MB (4) 1M x 9 (1) 256K x 36 (1) 2M x 36 13MB (4) 256K x 9 (1) 1M x 36 (1) 2M x 36 16MB NONE NONE (1) 4M x 36 16MB NONE (1) 4M x 36 NONE 16MB NONE (1) 2M x 36 (1) 2M x 36 16MB (4) 1M x 9 (1) 1M x 36 (1) 2M x 36 17MB (4) 256K x 9 (1) 4M x 36 NONE 17MB NONE (1) 256K x 36 (1) 4M x 36 18MB NONE (1) 512K x 36 (1) 4M x 36 18MB (4) 256K x 9 (1) 256K x 36 (1) 4M x 36 18MB (4) 256K x 9 (1) 4M x 36 (1) 256K x 36 19MB (4) 256K x 9 (1) 4M x 36 (1) 512K x 36 20MB (4) 1M x 9 (1) 4M x 36 NONE 20MB NONE (1) 1M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 1M x 36 (1) 4M x 36 21MB (4) 1M x 9 (1) 256K x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 1M x 36 21MB (4) 1M x 9 (1) 4M x 36 (1) 256K x 36 21MB (4) 4M x 9 (1) 256K x 36 (1) 1M x 36 21MB (4) 1M x 9 (1) 256K x 36 (1) 8M x 36 22MB (4) 1M x 9 (1) 4M x 36 (1) 512K x 36 24MB (4) 4M x 9 (1) 1M x 36 (1) 1M x 36 24MB (4) 1M x 9 (1) 4M x 36 (1) 1M x 36 24MB (4) 1M x 9 (1) 1M x 36 (1) 4M x 36 24MB NONE (1) 2M x 36 (1) 4M x 36 25MB (4) 256K x 9 (1) 4M x 36 (1) 2M x 36 25MB (4) 4M x 9 (1) 256K x 36 (1) 2M x 36 28MB (4) 1M x 9 (1) 4M x 36 (1) 2M x 36 28MB (4) 4M x 9 (1) 1M x 36 (1) 2M x 36 32MB (4) 4M x 9 NONE (1) 4M x 36 32MB NONE (1) 4M x 36 (1) 4M x 36 32MB NONE (1) 8M x 36 NONE 32MB NONE NONE (1) 8M x 36 32MB (4) 4M x 9 (1) 4M x 36 NONE 33MB (4) 4M x 9 (1) 4M x 36 (1) 256K x 36 33MB (4) 4M x 9 (1) 256K x 36 (1) 4M x 36 33MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 33MB NONE (1) 256K x 36 (1) 8M x 36 33MB (4) 4M x 9 (1) 256K x 36 (1) 4M x 36 34MB (4) 4M x 9 (1) 256K x 36 (1) 256K x 36 34MB (4) 4M x 9 (1) 4M x 36 (1) 512K x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 34MB (4) 256K x 9 (1) 256K x 36 (1) 8M x 36 34MB NONE (1) 512K x 36 (1) 8M x 36 36MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 36MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 36MB (4) 4M x 9 (1) 4M x 36 (1) 1M x 36 36MB NONE (1) 1M x 36 (1) 8M x 36 37MB (4) 256K x 9 (1) 1M x 36 (1) 8M x 36 37MB (4) 256K x 9 (1) 1M x 36 (1) 8M x 36 37MB (4) 4M x 9 (1) 1M x 36 (1) 256K x 36 40MB (4) 1M x 9 (1) 1M x 36 (1) 8M x 36 40MB (4) 4M x 9 (1) 4M x 36 (1) 2M x 36 40MB NONE (1) 2M x 36 (1) 8M x 36 48MB (4) 4M x 9 (1) 4M x 36 (1) 4M x 36 48MB NONE (1) 4M x 36 (1) 8M x 36 49MB (4) 256K x 9 (1) 4M x 36 (1) 8M x 36 49MB (4) 4M x 9 (1) 256K x 36 (1) 8M x 36 52MB (4) 1M x 9 (1) 4M x 36 (1) 8M x 36 64MB NONE (1) 8M x 36 (1) 8M x 36 64MB (4) 4M x 9 (1) 4M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 or (1) 16K x 8 or (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 16K x 8 or (1) 32K x 8 256KB (4) 64K x 8 NONE (1) 16K x 8 or (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 128KB pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 256KB pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 256KB pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 512KB pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed CPU TYPE CONFIGURATION Type JC1 JC2 CX486 M7 2A & 3A, 1B & 2B, 1C 1 & 2, 3 & 4 & 2C 80486SX 1A & 2A, 1B & 2B, 1C 2 & 3 & 2C SL 80486SX 1A & 2A, 1B & 2B, 1C 2 & 3 & 2C 80487SX 1A & 2A, 1B & 2B, 1C 1 & 2, 3 & 4 & 2C AMD486DX/DXL 1A & 2A, 1B & 2B, 1C 1 & 2, 3 & 4 & 2C 80486DX/DX2 1A & 2A, 1B & 2B, 1C 1 & 2, 3 & 4 & 2C SL 80486DX/DX2 1A & 2A, 1B & 2B, 1C 1 & 2, 3 & 4 & 2C Pentium Overdrive 1A & 2A, 2B & 3B, 1C 1 & 2, 3 & 4 & 2C Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JC3 JC5 CX486 M7 2A & 3A, 4A & 5A, 3B & 4B, 5B & 1 & 2 6B, 3C & 4C, 5C & 6C 80486SX 4C & 5C 1 & 2 SL 80486SX 1A & 2A, 5A & 6A, 4C & 4D, 5C & 1 & 2 6C 80487SX 2B & 3B, 4C & 5C 1 & 2 AMD486DX/DXL 2A & 2B, 3B & 4B, 5A & 5B, 4C & 1 & 2 5C 80486DX/DX2 3B & 4B, 4C & 5C 1 & 2 SL 80486DX/DX2 1A & 2A, 3B & 4B, 4C & 4D, 5A & 1 & 2 6A, 5C & 6C Pentium Overdrive 1A & 2A, 5A &6A, 2B & 3B, 5C & 2 & 3 6C Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JK1 JK2 JK3 25MHz 1 & 2, 7 & 9, 8 & 10, 2 & 3 1 & 2 14 & 16 33MHz 1 & 2, 3 & 4, 5 & 6, 7 2 & 3 1 & 2 & 9, 8 & 10, 14 & 16 40MHz 3 & 4, 10 & 12, 14 & 16 1 & 2 2 & 3 AMD40MHz 3 & 4, 10 & 12, 14 & 16 4 & 5 2 & 3 50iMHz 1 & 2, 7 & 9, 8 & 10, 2 & 3 1 & 2 14 & 16 50MHz 1 & 2, 7 & 9, 10 & 12 1 & 2 2 & 3 66iMHz 1 & 2, 3 & 4, 5 & 6, 7 2 & 3 1 & 2 & 9, 8 & 10, 14 & 16 Note: Pins designated should be in the closed position. BUS SPEED CONFIGURATION CPU speed JP2 <=33MHz pins 1 & 2 closed >33MHz pins 2 & 3 closed VESA WAIT STATE CONFIGURATION Wait states JP3 0 wait states pins 1 & 2 open 1 wait state pins 1 & 2 closed