ACHME COMPUTER, INC. MS-4138 Processor SL80486SX/80486SX/AM486DXL/CXM7/SL80486DX/80486DX/80486DX2/ Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set SIS Max. 32MB Onboard DRAM Cache 128/256/512KB BIOS AMI Dimensions 254mm x 218mm 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 6 - Green PC LED JG2 10 Turbo LED JFP pins 12 - Green PC connector JG3 13 Turbo switch JFP pins 15 - 32-bit VESA local SL1 - SL3 17 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » Battery type select internal JB pins 2 & 3 closed Battery type select external JB Closed » Factory configured - do not JC5 N/A alter » Monitor type select monochrome JP1 Open Monitor type select color JP1 Closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB (1) 512K x NONE NONE NONE 36 4MB (1) 256K x (1) 256K x (1) 512K x NONE 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 6MB (1) 256K x (1) 256K x (1) 1M x 36 NONE 36 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 8MB (1) 256K x (1) 256K x (1) 512K x (1) 1M x 36 36 36 36 8MB (1) 512K x (1) 512K x (1) 1M x 36 NONE 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 1M x 36 (1) 2M x 36 NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 NONE 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 16MB (1) 4M x 36 NONE NONE NONE 17MB (1) 256K x (1) 4M x 36 NONE NONE 36 18MB (1) 256K x (1) 256K x (1) 4M x 36 NONE 36 36 18MB (1) 512K x (1) 4M x 36 NONE NONE 36 20MB (1) 512K x (1) 512K x (1) 4M x 36 NONE 36 36 20MB (1) 1M x 36 (1) 4M x 36 NONE NONE 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 NONE 24MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 4M x 36 36 36 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 24MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 24MB (1) 2M x 36 (1) 4M x 36 NONE NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 8M x 36 NONE NONE NONE 36MB (1) 512K x (1) 512K x (1) 4M x 36 (1) 4M x 36 36 36 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 48MB (1) 4M x 36 (1) 8M x 36 NONE NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 NONE 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 NONE 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 80MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 NONE 96MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 NONE 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K or (1) 16K or (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 16K or (1) 32K x 8 256KB (4) 64K x 8 NONE (1) 16K or (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 128KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 256KB pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 256KB pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 512KB pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION Type JC1 JC2 SL80486SX 2 & 3, 7 & 8, 9 & 10, 10 & 11 12 & 13 80486SX 7 & 8 10 & 11 AM486DXL 7 & 8, 11 & 12 5 & 6, 7 & 8, 9 & 10, 11 & 12 CXM7 1 & 2, 3 & 12, 4 & 4 & 13, 7 & 8, 9 & 10, 11, 5 & 10, 7 & 8 11 & 12 SL80486DX 2 & 3, 7 & 8, 9 & 10, 7 & 8, 9 & 10, 11 & 12 12 & 13 80486DX 7 & 8 7 & 8, 9 & 10, 11 & 12 80486DX2 7 & 8 7 & 8, 9 & 10, 11 & 12 Pentium Overdrive 2 & 3, 7 & 8, 9 & 10, 6 & 7, 9 & 10, 11 & 12 12 & 13 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JC3 JC4 SL80486SX pins 1 & 2 closed pins 1 & 2 closed 80486SX Open pins 1 & 2 closed AM486DXL pins 2 & 3 closed pins 3 & 4 closed CXM7 pins 1 & 2 closed pins 3 & 4 closed SL80486DX pins 1 & 2 closed pins 1 & 2 closed 80486DX pins 1 & 2 closed pins 1 & 2 closed 80486DX2 pins 1 & 2 closed pins 1 & 2 closed Pentium Overdrive pins 1 & 2 closed pins 1 & 2 closed CPU SPEED CONFIGURATION Speed JK1 JK2 25MHz Open pins 2 & 3 closed 33MHz pins 2 & 5, 3 & 4 pins 2 & 3 closed closed 40MHz pins 3 & 4 closed pins 2 & 3 closed 50iMHz Open pins 2 & 3 closed 50MHz pins 1 & 6, 2 & 5 pins 1 & 2 closed closed 66iMHz pins 2 & 5, 3 & 4 pins 2 & 3 closed closed VESA WAIT STATE CONFIGURATION Wait states JP2 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP3 <= 33MHz Open > 33MHz Closed