Amptron International Inc. Manufacturer of PC Motherboards

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PM-7400 JUMPER SETTINGS
J5A - EXTERNAL BATTERY/CLEAR CMOS J5B - KEYLOCK & POWER LED J5C - SPEAKER J5D - SYSTEM RESET J5E - ONBOARD IDE HDD LED J5F - TURBO SWITCH J5G - TURBO LED JP1 - FLASH EPROM PROGRAMMING VOLTAGE JP2 - CPU VOLTAGE SETTING JP3A & JP3B - CPU CLOCK SELECTION JUMPER JP4A & JP4B - CPU CLOCK MULTIPLIER SELECTOR
J5A - External Battery/Clear CMOS
==================================== JUMPER PIN ASSIGNMENT ------------------------------------ 2 - 3 NORMAL OPERATION 3 - 4 CLEAR CMOS 1 EXTERNAL BATTERY (+) 4 EXTERNAL BATTERY (-) ====================================
J5B - Keylock & Power LED
==================================== PIN ASSIGNMENT ------------------------------------ 1 LED POWER 2 NC 3 GROUND 4 KEYBOARD LOCK 5 GROUND ====================================
J5C - Speaker
==================================== PIN ASSIGNMENT ------------------------------------ 1 SPEAKER DATA OUT 4 +5V ====================================
J5D - System Reset
==================================== JUMPER ASSIGNMENT ------------------------------------ OPEN NORMAL MODE SHORT RESET SYSTEM ====================================
J5E - Onboard IDE HDD LED
==================================== PIN ASSIGNMENT ------------------------------------ 1 LED (+) 2 LED (-) ====================================
J5F - Turbo Switch
=========================================== JUMPER NOTE ASSIGNMENT ------------------------------------------- OPEN ALWAYS TURBO LED "ON" SHORT DOES NOT SUPPORT LED "OFF" NON-TURBO OPERATION ===========================================
J5G - Turbo LED
==================================== PIN ASSIGNMENT ------------------------------------ 1 LED (+) 2 LED (-) ====================================
JP1 - Flash EPROM Programming Voltage
======================================= JUMPER ASSIGNMENT --------------------------------------- 1 - 2 12 VOLT FLASH PROGRAMMING 2 - 3 5 VOLT FLASH PROGRAMMING OPEN DEFAULT =======================================
JP2 - CPU Voltage Setting
==================================== VOLTAGE JUMPER J19 DEFAULT ------------------------------------ 3.5V - VRE 1 - 2 YES 3.3V - STD/VR 2 - 3 YES ====================================
JP3A, JP3B - CPU Clock Selection Jumper
=================================================== \|-CPU------\|\|-CPU CLOCK-------------------------\| TYPE P-# MHz JP3A* JP3B* JP3A JP3B CLOCK --------------------------------------------------- 75 SHORT SHORT SHORT SHORT 50MHz 90 OPEN SHORT SHORT OPEN 60MHz INTEL 100 SHORT OPEN OPEN SHORT 66MHz PENTIUM 120 OPEN SHORT SHORT OPEN 60MHz P54C & 133 SHORT OPEN OPEN SHORT 66MHz P55C 150 OPEN SHORT SHORT OPEN 60MHz 166 SHORT OPEN OPEN SHORT 66MHz 200 SHORT OPEN OPEN SHORT 66MHz --------------------------------------------------- IBM P120+ 100 SHORT SHORT SHORT SHORT 50MHz CYRIX P150+ 120 OPEN SHORT SHORT OPEN 60MHz 6X86 P166+ 133 SHORT OPEN OPEN SHORT 66MHz --------------------------------------------------- PR75 75 SHORT OPEN OPEN SHORT 66MHz AMD PR100 100 SHORT OPEN OPEN SHORT 66MHz K5 PR120 90 SHORT OPEN OPEN SHORT 66MHz PR133 100 SHORT OPEN OPEN SHORT 66MHz =================================================== USE THESE JUMPER SETTINGS IF YOU CLOCK CHIP AT LOCATION U20 IS MARKED "CYxxxxxx-" *USE THESE JUMPER SETTINGS IF YOUR CLOCK CHIP AT LOCATION U20 IS MARKED "Wxxxxx-"
JP4A & JP4B - CPU Clock Multiplier Setting
=================================================== TYPE P-# MHz JP4A JP4B MULTIPLIER --------------------------------------------------- INTEL 75/90/100 OPEN OPEN 1.5x PENTIUM 120/133 OPEN SHORT 2.0x P54C & 150/166 SHORT SHORT 2.5x P55C 180/200 SHORT OPEN 3.0x --------------------------------------------------- IBM P120+ 100 OPEN SHORT 2.0x CYRIX P150+ 120 OPEN SHORT 2.0x 6X86 P166+ 133 OPEN SHORT 2.0x --------------------------------------------------- PR75 75 OPEN OPEN 1.5x AMD PR100 100 OPEN OPEN 1.5x K5 PR120 90 OPEN OPEN 1.5x PR133 100 OPEN OPEN 1.5x ===================================================


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