rmay635703
Veteran Member
I don't have multiple CPU cards to check anymore but the compaq elite LTE series of 486 laptops had an upgradable surface mount 486 chip on a cpu card that plugged into a pair of edge connectors.
The bus speed and voltage set by pins on the processor card being grounded or hung to a voltage.
I believe I can modify a card to accept a 5x86 surface mount or even overclock my dx4-75mhz cpu I dropped in years ago but without the pinout I can't accomplish this (not sure how to follow through the circuitry)
I do know 3rd party AMD 5x86 150mhz cpus where offered for these old beasties so apparently the lappy could support 50mhz FSB. Too bad I can't figure out how or what pins to ground on the edge connector.
I have a similar question on the Compaq LTE Pentium 133 and 150mhz laptops both have identical motherboards so there should be a way of setting the FSB, even though the mobo doesn't have apparent settings.
Thanx for any help
Ryan
The bus speed and voltage set by pins on the processor card being grounded or hung to a voltage.
I believe I can modify a card to accept a 5x86 surface mount or even overclock my dx4-75mhz cpu I dropped in years ago but without the pinout I can't accomplish this (not sure how to follow through the circuitry)
I do know 3rd party AMD 5x86 150mhz cpus where offered for these old beasties so apparently the lappy could support 50mhz FSB. Too bad I can't figure out how or what pins to ground on the edge connector.
I have a similar question on the Compaq LTE Pentium 133 and 150mhz laptops both have identical motherboards so there should be a way of setting the FSB, even though the mobo doesn't have apparent settings.
Thanx for any help
Ryan