DTK COMPUTER, INC. PKM-0038S (VER. 1.00) Processor CX486M6/80486SX/CX486S2/SL80486SX/CX486M7/80486DX/SL80486DX/ 80486DX2/SL80486DX2/P24D/Pentium Overdrive Processor 20/25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 128/256/512KB BIOS Award Dimensions 250mm x 220mm I/O Options 32-bit VESA local bus slots (3), green PC connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch J3 pins 3 & Power LED & keylock J7 4 Turbo LED J4 Green PC connector JP26 Speaker J5 32-bit VESA local SL1 - SL3 bus slots Reset switch J6 USER CONFIGURABLE SETTINGS Function Jumper Position » Turbo switch enabled J3 pins 3 & 4 closed Turbo switch disabled J3 pins 4 & 5 closed » CMOS memory normal operation JP16 pins 2 & 3 closed CMOS memory clear JP16 pins 1 & 2 closed » Monitor type select JP17 Open monochrome/EGA/VGA Monitor type select CGA JP17 Closed » CPU type select any CPU installed JP18 Open CPU type select CX486S2 only JP18 Closed » Factory configured - do not alter JP19 pins 1 & 2 closed » CPU clock delay select CLKIN delays JP20 pins 2 & 3 CPUCLK closed CPU clock delay select CLKIN = JP20 pins 1 & 2 CPUCLK closed » Factory configured - do not alter JP23 pins 1 & 2 closed » Factory configured - do not alter JP27 Open » Factory configured - do not alter JP32 pins 1 & 2 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) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 17MB (4) 256K x 9 (4) 4M x 9 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE 65MB (4) 256K x 9 (4) 16M x 9 68MB (4) 1M x 9 (4) 16M x 9 80MB (4) 4M x 9 (4) 16M x 9 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 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) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3 JP4 128KB 1 & 2 1 & 2 1 & 2, 3 & 1 & 2 4 256KB 2 & 3 2 & 3 2 & 3, 4 & 1 & 2 5 512KB 1 & 2 2 & 3 1 & 2, 3 & 2 & 3 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP8 JP9 JP10 JP11 JP12 CX486M6 2 & 3 Closed 2 & 3 Open 2 & 3, 4 & 5 80486SX 2 & 3 Open 2 & 3 Open Open SL80486SX 2 & 3 Open 2 & 3 Open 3 & 4 CX486M7 1 & 2 Closed 2 & 3 2 & 3 2 & 3 80486DX 1 & 2 Closed 2 & 3 2 & 3 Open SL80486DX 1 & 2 Closed 2 & 3 2 & 3 3 & 4 80486DX2 1 & 2 Closed 2 & 3 2 & 3 Open SL80486DX2 1 & 2 Closed 2 & 3 2 & 3 3 & 4 P24D 1 & 2 Closed 1 & 2 2 & 3 1 & 2, 3 & 4 P24T 1 & 2 Closed 1 & 2 1 & 2 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP13 JP14 JP15 JP21 CX486M6 Open 1 & 2, 3 & 2 & 3 1 & 2 4 80486SX Open Open Open 2 & 3 SL80486SX 1 & 2 2 & 3 4 & 5 2 & 3 CX486M7 Open 1 & 2, 3 & 2 & 3 1 & 2 4 80486DX Open Open Open 2 & 3 SL80486DX 1 & 2 2 & 3 4 & 5 2 & 3 80486DX2 Open Open Open 2 & 3 SL80486DX2 1 & 2 2 & 3 4 & 5 2 & 3 P24D 2 & 3 2 & 3 4 & 5 2 & 3 P24T Open 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP22 JP24 JP25 JP30 JP31 CX486M6 2 & 3 2 & 3 2 & 3 Open Open 80486SX 1 & 2 Open Open Open Open SL80486SX 1 & 2 Open Open Open Open CX486M7 2 & 3 2 & 3 2 & 3 Open Open 80486DX 1 & 2 Open Open Open Open SL80486DX 1 & 2 Open Open Open Open 80486DX2 1 & 2 Open Open Open Open SL80486DX2 1 & 2 Open Open Open Open P24D 1 & 2 Open 1 & 2 Closed Closed P24T 1 & 2 1 & 2 1 & 2 Open Open Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP5 JP6 JP7 20MHz Open Open Open 25MHz Open Closed Open 33MHz Closed Closed Closed 40MHz Open Closed Closed 50iMHz Open Closed Open 50MHz Closed Open Open 66iMHz Closed Closed Closed VL BUS WAIT STATE CONFIGURATION » Wait states JP28 » 0 wait states pins 1 & 2 closed » 1 wait state pins 2 & 3 closed VL BUS SPEED CONFIGURATION CPU speed JP29 <= 33MHz pins 1 & 2 closed > 33MHz pins 2 & 3 closed