(F4DXL-UC4.1D) MAINBOARD CPU(MICROPROCESSOR) INSTALL SELECTION **CAUTION** PLEASE CHECK VOLTAGE OF CPU FIRST **CAUTION** CPU JP11 JP12 JP13 JP17 JP18 JP19 -------------------------------------------------------------------- 5v AMD486DX502 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v AMD486DX662 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v AMD486DX40 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN #3.3v AMD486DX802 2-3 2-3 1-2,3-4 1-2,3-4 1-2 OPEN 5v AMD486DX802 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 3.3v AMD486DX1004 2-3 2-3 1-2,3-4 1-2,3-4 1-2 OPEN 5v AMD486DX662SL 1-2 1-2 1-2,3-4 1-2 5-6 1-2,3-4 5v CYRIX486DX40 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 5v CYRIX486DX50 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 5v CYRIX486DX502 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 5v ITS486DX662 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 3.3v IBM486DXv662 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 3.6v CYRIX486DXv662 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 4.0v CYRIX486DX802 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 3.45v CYRIX486DX1004 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 3.45v CYRIX586DX100 1-2,3-4 1-2,3-4 1-2,3-4 1-2 1-2,5-6 1-2,3-4 (cx5x86x) 5-6 5-6 5v INTEL486DX502 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v INTEL486DX662 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v INTEL486DX40 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v INTEL486DX50 OPEN 2-3 1-2,3-4 1-2 OPEN OPEN 5v OVERDRIVE DX662 1-2 1-2 1-2,3-4 1-2 5-6 1-2,3-4 5v ITS486DX662 1-2,3-4 1-2,3-4 1-2,3-4 1-2 2-3,4-5 2-3 5-6 5-6 5v UMC486SX33 2-3 2-3 2-3 3-4 1-2 OPEN 5v UMC486SX40 2-3 2-3 2-3 3-4 1-2 OPEN # = CONNECT BLACK WIRE JUMPER BETWEEN PIN 4 OF JP12 AND PIN 3 OF JP20 CPU VOLTAGE JP14,15,16 SW1 SW2 SW3 SW4 SW5 5.0v 2-3 <- DON'T CARE -> RESERVED 4.0v 1-2 OFF OFF OFF RESERVED 3.6v 1-2 OFF OFF ON RESERVED 3.45v 1-2 OFF ON OFF RESERVED 3.3v 1-2 ON OFF OFF RESERVED JP2 OPEN = FOR USING EEPROM (DEFAULT!) 1-2 = FOR USING 12volt FLASH ROM 2-3 = FOR USING 5 volt FLASH ROM JP3 CLOSE = INTERNAL KEYBOARD CONTROLLER !! OPEN = EXTERNAL KEYBOARD CONTROLLER (SHOULD BE CLOSE)!!! JP21 CLOSE = VESA CLOCK > 33 MHz OPEN = VESA CLOCK ó 33 MHz (DX662 AND DX1004 IS ALSO 33MHz) JP22 CLOSE = 0 WS OPEN = 1 WS CPU CLOCK JP4 JP5 JP6 CPU SPEED 25MHz OFF OFF ON SX25, DX502 33MHz ON ON ON SX33, DX33, DX662, DX1004, Cx5x86x100 40MHz OFF ON ON SX40, DX40, DX802 50MHz ON OFF OFF DX50, DX1004 (DUAL CLOCK) 16AUG95