tankus@hsi.UUCP (Ed Tankus) (08/02/90)
I have the above machine and would like to rev this sucker up to
8mhz (minimally) or 10Mhz (preferably). I recall these machines
may have had something in the POST to detect clock speed but this
could be defeated once the POST was done. Is this correct??
I recall Ariel Corp, who once advertised extensively in PC WEAK
(sp IS correct!) had a circuit board, etc. for this purpose. I
would be interested in something like this or perhaps a straight
accelerator card, if it would work. I have fast RAM chips and
my boards are rated for 12Mhz so that stuff is not a problem.
Any help and pointers to vendors would be appreciated. Please
respond via email if possible. Thanks!!!
--
Ed Tankus. {uunet,yale}!hsi!tankus -- OR -- tankus@hsi.com
Snail: 3M Health Information Systems
100 Barnes Road, Wallingford, CT 06492
Bell : (203) 949-6358robin@uhccux.uhcc.Hawaii.Edu (Robin Amano) (08/04/90)
In article <1904@hsi86.hsi.UUCP> tankus@hsi.UUCP (Ed Tankus) writes: >I have the above machine and would like to rev this sucker up to >8mhz (minimally) or 10Mhz (preferably). I recall these machines >may have had something in the POST to detect clock speed but this >could be defeated once the POST was done. Is this correct?? > You are correct. I can't remember exactly what version, but the older AT machines need the rom replaced, when you change the crystal. Find a newer version take out the rom copy it into an eprom(27256-15) replace your old rom and crystal and you should be set. I think it costs an arm and a leg to get the rom from IBM, although it's probably not exactly legal to copy the rom, I think. Anyway I'll dig up the info and let you know what version we used.