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Magnum One (Mid-American Digital) (Disc Manufacturing).iso
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SETSPD.DOC
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1987-09-12
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621b
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18 lines
SETSPD.COM
This program will allow the use of the IBM ROM BIOS with turbo motherboards.
It is simply a toggle of bit 2 of port 61H.
I have not investigated what this bit controls, but I got the information from
the manufacturer of my motherboard (Star Technologies) and it works for my
system.
I have included SETSPD.COM in my AUTOEXEC.BAT to start-up in 8MHz and if I
need to go to 4.77, I enter SETSPD and as if by magic.
I have also wired a toggle switch and LED to indicate speed, since my mb has
these capabilities.
-----Jon Springs-----