M912 ver:1.7 / DX-6900 Jumper Settings

PC Chips M912 ver:1.7 w/black ISA slots, AMDDX4 support and Real Cache - aka DX-6900 JUMPER SETTINGS


	JP1 - External Battery Connector/Clear CMOS JP2 & JP3 - Select Active BIOS & Flash Voltage JP6 JP7 & JP8 - CPU Clock Selection Jumper JP15 - Keylock & Power LED JP16 & JP17- VL-Bus Wait State JP18 - Speaker JP19 - Turbo LED JP20 - System Reset JP22 - Turbo Switch JP23 - Green Mode Trigger Switch JP24 JP25 JP26 & JP35 - CPU Power Selectors CPU Type Selection Jumpers JP36 - closed ... undocumented jumper function

	JP1 - External Battery/Clear CMOS TOP ================================================== Jumper Pin Assignment ---------------------------------------------------------------------------------------------------- 2 - 3 Normal Operation 3 - 4 Clear CMOS 1 External Battery (+) 4 External Battery (-) ================================================== Please make sure the pins 2-3 are shorted before using the system board. The systemboard is shipped from the factory with pins 3-4 shorted to prevent battery drain during storage. Failure to reset this jumper at pins 2-3 would prevent the boardfrom powering up. JP2 & JP3 - Select Active BIOS & Flash Voltage TOP ================================================== Assignment Jumper Pins ---------------------------------------------------------------------------------------------------- AMI Bios Active JP2 1 - 2 AWARD Bios Active JP2 2 - 3 Flash ROM 5 volt JP3 1 - 2 Flash ROM 12volt JP3 2 - 3 ================================================== Note: Altering JP2 will have no effect unless the current BIOS chip has both programs stored. The original manufacturer installed BIOS chips were PROMs and not flashable so upgrading them is impossible without the correct EEPROM installed, unless of course you own an EPROM Burner. JP15 - Keylock & Power LED TOP ================================================== Pin Assignment ---------------------------------------------------------------------------------------------------- 1 LED Power 2 Not Connected 3 Groung 4 Keyboard Lock 5 Ground ================================================== JP16 & JP17 - VL-Bus Wait State TOP ================================================== State JP16 JP17 ---------------------------------------------------------------------------------------------------- Normal (= OR < 33MHz) OPEN OPEN Extra Wait ( > 33MHz) SHORT SHORT ================================================== JP18 - Speaker TOP ================================================== Pin Assignment ---------------------------------------------------------------------------------------------------- 1 Speaker Data Out 4 +5V ================================================== JP19 - Turbo LED TOP ================================================== Pin Assignment ---------------------------------------------------------------------------------------------------- 1 LED (+) 2 LED (-) ================================================== JP20 - System Reset TOP ================================================== Pin Assignment ---------------------------------------------------------------------------------------------------- 1 Reset 2 Ground ================================================== JP22 - Turbo Switch TOP ================================================== Jumper State ---------------------------------------------------------------------------------------------------- OPEN Turbo 1 - 2 Non-Turbo ================================================== JP23 - Green Mode Trigger Switch TOP ================================================== Jumper State ---------------------------------------------------------------------------------------------------- Trigger Once Green Mode Trigger Again Normal Operation ================================================== This is a toggle switch so please do not keep this jumper shorted or else the system will have a problem waking up or booting after a reset. For this reason, do not use the Turbo button on the system chassis for this switch, since one may forget to release the button after triggering the system into green mode. JP6 JP7 & JP8 - CPU Clock Selection Jumper TOP ================================================== CPU Clock CPU Frequency JP6 JP7 JP8 ---------------------------------------------------------------------------------------------------- 25MHz DX2-50MHz OPEN OPEN SHORT 33MHz DX2-66MHz SHORT SHORT SHORT DX4-100MHz 5x86-100MHz 5x86-133MHz 40MHz DX-40MHz OPEN SHORT SHORT DX2-80MHz DX4-120MHz 5x86-120MHz 50MHz DX-50MHz SHORT OPEN OPEN ================================================== JP24 JP25 JP26 & JP35 - CPU Voltage Jumpers TOP ================================================== CPU Voltage JP24 JP25 JP26 JP35 ---------------------------------------------------------------------------------------------------- 5 Volts 2 - 3 2 - 3 2 - 3 SHORT 3.3 Volts 1 - 2 1 - 2 1 - 2 SHORT 4 Volts 1 - 2 1 - 2 1 - 2 OPEN ================================================== CPU Type Selection Jumpers TOP ================================================== \| 486 NON-SL ENHANCED \| 486 SL ENHANCED \| \|-----INTEL/AMD--\|--------AMD---------\|----------INTEL-------\|---------CYRIX/IBM/TI---------\| \| SX \| DX DX2 \| DX2 \| DX4 \| DX DX2 \| DX4 \| DX \| DX2 \|DX2-V80\| ---------------------------------------------------------------------------------------------------- VOLT 5V 5V 3.3V 3.3V 5V 3.3V 5V 3.3V 4V JP24 2 - 3 2 - 3 1 - 2 1 - 2 2 - 3 1 - 2 2 - 3 1 - 2 1 - 2 JP25 2 - 3 2 - 3 1 - 2 1 - 2 2 - 3 1 - 2 2 - 3 1 - 2 1 - 2 JP26 2 - 3 2 - 3 1 - 2 1 - 2 2 - 3 1 - 2 2 - 3 1 - 2 1 - 2 JP27 OPEN OPEN OPEN OPEN 1 - 2 1 - 2 2 - 3 2 - 3 2 - 3 3 - 4 3 - 4 JP28 2 - 3 2 - 3 2 - 3 2 - 3 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 3 - 4 3 - 4 5 - 6 5 - 6 5 - 6 JP29 OPEN OPEN OPEN OPEN 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 3 - 4 3 - 4 5 - 6 5 - 6 5 - 6 JP30 OPEN OPEN OPEN OPEN 5 - 6 5 - 6 2 - 3 2 - 3 2 - 3 4 - 5 4 - 5 4 - 5 JP31 OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN JP32 OPEN 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 JP33 2 - 3 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 3 - 4 3 - 4 3 - 4 3 - 4 3 - 4 3 - 4 3 - 4 JP34 SHORT SHORT SHORT OPEN OPEN OPEN OPEN OPEN OPEN JP35 SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT OPEN ================================================== ================================================== \|---------------------CYRIX/IBM---------------------\|\|------------------------AMD-----------------------\| \| IBM DX4-GC \| IBM DX4-GIC \|\| 486DX4 (8B) \| \| \| CYR DX4-GP \| CYR DX4-GP4 \|\| PLUS/WRITEBACK \| \| \| (M7 PINOUT) \| (P24D PINOUT) \|\| (P24D PINOUT) \| 5x86-133 \| ---------------------------------------------------------------------------------------------------- VOLT 3.3V 3.3V 3.3V 3.3V JP24 1 - 2 1 - 2 1 - 2 1 - 2 JP25 1 - 2 1 - 2 1 - 2 1 - 2 JP26 1 - 2 1 - 2 1 - 2 1 - 2 JP27 2 - 3 1 - 2 1 - 2 1 - 2 3 - 4 3 - 4 3 - 4 JP28 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 4 - 5 4 - 5 4 - 5 5 - 6 JP29 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 4 - 5 4 - 5 4 - 5 5 - 6 JP30 2 - 3 3 - 4 3 - 4 3 - 4 4 - 5 5 - 6 5 - 6 5 - 6 JP31 OPEN OPEN OPEN 2 - 3 JP32 1 - 2 1 - 2 1 - 2 1 - 2 JP33 1 - 2 1 - 2 1 - 2 1 - 2 3 - 4 3 - 4 3 - 4 3 - 4 JP34 OPEN OPEN OPEN OPEN JP35 SHORT SHORT SHORT SHORT ================================================== Here are the Intel Overdrive processor's jumper settings: JP27 1-2, 3-4 JP28 1-2 JP29 1-2 JP30 5-6 JP32 2-3 JP33 1-2, 3-4 JP31 3X 2.5X 2X OPEN 1 - 2 2 - 3 It should show up as P24T in your bios.