BETHEL ELECTRONICS INTERNATIONAL, INC. HYF-82481Q Processor CX486S/80486SX/SL80486SX/CX486DX/UMCU5/80486DX/SL80486DX/ CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4 Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 128/256/512/1024KB BIOS Award Dimensions 250mm x 220mm I/O 32-bit VESA local bus slots (3) Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Chassis fan power CN1 Turbo switch JP9 Speaker JP6 Power LED & keylock JP10 Reset switch JP7 32-bit VESA local bus SL1 - SL3 slots Turbo LED JP8 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP3 Open CMOS memory clear JP3 Closed » Turbo switch enabled JP9 Open Turbo switch disabled JP9 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 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 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 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 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 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 36MB (1) 1M x 36 (1) 8M x 36 NONE NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 NONE 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) 16M x 36 NONE NONE NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 NONE 64MB (1) 8M x 36 (1) 8M x 36 NONE NONE DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 65MB (1) 256K x (1) 16M x NONE NONE 36 36 68MB (1) 1M x 36 (1) 16M x NONE NONE 36 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 NONE 72MB (1) 1M x 36 (1) 1M x 36 (1) 16M x NONE 36 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 80MB (1) 4M x 36 (1) 16M x NONE NONE 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) 16M x NONE 36 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) 16M x 36 (1) 16M x NONE NONE 36 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 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 (1) 32K x 8 512KB (4) 64K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 32K x 8 CPU TYPE CONFIGURATION Type JP11 JP12 W3 80486SX pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 80486DX pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 80486DX2 (3.3v) pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 80486DX2 (5v) pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 80486DX4 (3.3v) pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 80486DX4 (5v) pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed CPU SPEED CONFIGURATION Speed W1 25MHz Open 33MHz pins 1 & 2, 3 & 4 closed 40MHz pins 3 & 4 closed 50iMHz Open 50MHz pins 1 & 2 closed 66iMHz pins 1 & 2, 3 & 4 closed 75iMHz Open 100iMHz pins 1 & 2, 3 & 4 closed