Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ukma!husc6!rutgers!bellcore!texbell!killer!garnett
From: garnett@killer.Dallas.TX.US (John Garnett)
Newsgroups: comp.sys.ibm.pc
Subject: Re: turbo mode
Message-ID: <7679@killer.Dallas.TX.US>
Date: 27 Mar 89 09:40:46 GMT
References: <969@wheaton.UUCP>
Distribution: usa
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 33

in article <969@wheaton.UUCP>, jim@wheaton.UUCP (Jim Mann) says:
> 
> Is there a way to force an ibm clone to boot into turbo
> mode (10 MH)?  I would like to have a program to put in
> the autoexec.bat file that entered <ctl><alt><+>.  The
> language I prefer is TURBO C but assembler would be ok.
> Thanks.       Jim Mann

The following 3 short .com programs work on my XT clone.

slow.com: switch to normal speed (4.77?)

228, 97, 36, 251, 230, 97, 195

fast.com: switch to turbo speed (10?)

228, 97, 12, 4, 230, 97, 195

switchsp.com: toggle between normal and fast

228, 97, 52, 4, 230, 97, 195

to create .com files from these descriptions you will need to write
a short program to write these values to disk.

Do not hold me responsible if these program do strange things to your
computer.

I do not claim that these programs will work on all XT turbo clones.
(I did not write these programs - they came from one of the PC mags).

--
John Garnett