martin@mplvax.EDU (Martin Olivera) (08/08/89)
I have an old PC-XT compatible with Turbo option (4.77 to
8 Mhz). Does anyone know how to program the switch from
standard to turbo?. I looked into some ROM Bios manuals and
they have ways to program the soft reboot (alt-ctrl-del is
19H I think), but there is nothing concerning speed
switches. Thanx in advance.
Martinsimcha@kurz-ai.UUCP (Simcha Lerner) (08/09/89)
In article <977@mplvax.EDU> martin@mplvax.EDU (Martin Olivera) writes: >I have an old PC-XT compatible with Turbo option (4.77 to >8 Mhz). Does anyone know how to program the switch from >standard to turbo?. Since each machine has different hardware for changing speeds, and there is no standard BIOS function to control the machine's speed (after all, IBMs are all monospeed), there is no route available except to contact the manufacturer. Your only other possible alternative is to disassemble whatever software (if any) that came with the machine to control the speed. Some brain-dead machines can ONLY change speed via hardware. Some VERY brain-dead machines can't even change speed while running! (I think the latter are totally extinct now, but you can never be sure.) -- Simcha Lerner Kurzweil Applied Intelligence PLEASE NOTE ADDRESS: NO RETURN MAIL VIA bbn PLEASE UUCP address: kurz-ai!simcha@talcott.harvard.edu or: ...{uunet,rutgers,ames}!harvard!talcott!kurz-ai!simcha