EFA CORPORATION 4MHL3G Processor CXM6/SL80486SX/80486SX/SL80486DX/80486DX/ODP486SX/CXM7/ SL80486DX2/80486DX2/80486DX4/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 64/128/256/512/1024KB BIOS AMI Dimensions 330mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location External battery JP1 Turbo LED JP52 Turbo switch JP48 Turbo key JP53 Reset switch JP49 Green PC connector JP54 Power LED & keylock JP50 32-bit VESA local bus SL1 - SL3 slots Speaker JP51 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select EGA JP2 pins 2 & 3 closed Monitor type select monochrome/VGA JP2 pins 1 & 2 closed » Factory configured - do not alter JP4 Open » CMOS memory normal operation JP5 pins 1 & 2 closed CMOS memory clear JP5 pins 2 & 3 closed » Factory configured - do not alter JP12 Open » Factory configured - do not alter JP25 Open » DX slow down mode disabled JP37 Open DX slow down mode enabled JP37 Closed » Factory configured - do not alter JP38 Open » Factory configured - do not alter JP45 Open » Factory configured - do not alter JP55 Open Note: The location of jumpers JP45 & JP55 are unidentified. 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 NONE 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 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 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) 1M x 36 (1) 4M x 36 NONE 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) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 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 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 65MB (1) 256K x (1) 16M x 36 NONE NONE 36 68MB (1) 1M x 36 (1) 16M x 36 NONE 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) 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 36 NONE NONE 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 36 NONE 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 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 128K x 8 CACHE JUMPER CONFIGURATION Size JP9 JP27 JP28 JP35 JP41 JP42 JP43 64KB 1 & 2 2 & 3 Open 2 & 3 1 & 2 1 & 2 1 & 2 128KB 2 & 3 1 & 2 1 & 2, 2 & 3 1 & 2 1 & 2 2 & 3 3 & 4 256KB 1 & 2 1 & 2 2 & 3, 2 & 3 1 & 2 2 & 3 2 & 3 4 & 5 512KB 2 & 3 1 & 2 1 & 2, 2 & 3 2 & 3 2 & 3 2 & 3 3 & 4 1MB 1 & 2 1 & 2 2 & 3, 1 & 2 2 & 3 2 & 3 2 & 3 4 & 5 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP7 JP11 JP16 JP17 JP18 JP19 CXM6 Open 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 SL80486SX Closed 2 & 3 4 & 5 1 & 2 2 & 3 Open 80486SX Open Open Open Open 2 & 3 Open ODP486SX Open Open Open Open 2 & 3 Open SL80486DX Closed 2 & 3 4 & 5 1 & 2 2 & 3 Open 80486DX Open Open Open Open 2 & 3 Open CXM7 Open 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 SL80486DX2 Closed 2 & 3 4 & 5 1 & 2 2 & 3 Open 80486DX2 Open Open Open Open 2 & 3 Open 80486DX4 Closed 2 & 3 4 & 5 1 & 2 2 & 3 Open P24T Open 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed postion. CPU TYPE CONFIGURATION (CON’T) Type JP19 JP20 JP21 JP22 JP23 JP29 JP30 JP31 CXM6 2 & 1 & 2 & Open Open 2 & 1 & 2 & 3 3 2 3 3 2 SL80486SX Open Open 2 & Open Open 2 & 2 & 1 & 2 3 3 3 80486SX Open Open 2 & Open Open 2 & 2 & 1 & 2 3 3 3 ODP486SX Open Open 1 & 2 & Closed 2 & 2 & 1 & 2 2 3 3 3 SL80486DX Open Open 1 & 1 & Closed 2 & 2 & 1 & 2 2 2 3 3 80486DX Open Open 1 & 1 & Closed 2 & 2 & 1 & 2 2 2 3 3 CXM7 2 & 1 & 1 & 1 & Closed 2 & 1 & 2 & 3 3 2 2 2 3 2 SL80486DX2 Open Open 1 & 1 & Closed 2 & 2 & 1 & 2 2 2 3 3 80486DX2 Open Open 1 & 1 & Closed 2 & 2 & 1 & 2 2 2 3 3 80486DX4 Open Open 1 & 1 & Closed 2 & 2 & 1 & 2 2 2 3 3 P24T 1 & 2 & 1 & 2 & Closed 2 & 2 & 2 & 3 2 3 2 3 3 3 Note: Pins designated should be in the closed postion. The location fof JP29 is unidentified. CPU TYPE CONFIGURATION Type jp6 jp26 All CPU types Open pins 1 & 2 closed 80486DX4 only pins 1 & 2 closed pins 2 & 3 closed CPU TYPE CONFIGURATION Type JP8 JP14 JP15 All CPU types Open Open Open P24D only Closed Closed Closed CPU TYPE CONFIGURATION Type JP10 All CPU types Open CX486DX-40 pins 2 & 3 closed CX486DX2-50 pins 1 & 2 closed CPU TYPE CONFIGURATION Type JP24 All CPU types Open CX M6/M7 CPU Closed CPU SPEED CONFIGURATION Speed JP32 JP33 JP34 20MHz pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 25MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 33MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 40MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 50iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 50MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 66iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 75iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 100iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed CPU VOLTAGE CONFIGURATION Voltage JP13 JP44 3.3v pins 2 & 3, 5 & 6 pins 1 & 2 closed closed 5.0v pins 1 & 2, 4 & 5 pins 2 & 3 closed closed VESA WAIT STATE CONFIGURATION Wait states JP40 0 wait states pins 1 & 2 closed 1 wait state pins 2 & 3 closed BUS SPEED CONFIGURATION CPU speed JP39 <= 33MHz pins 1 & 2 closed > 33MHz pins 2 & 3 closed