12 Nov
2006
12 Nov
'06
2:15 a.m.
Chris M wrote:
--- Julian Wolfe <fireflyst at earthlink.net> wrote:
I overclocked the 286 in my ITT XTRA XP years ago (6
- 8mhz woopy) by replacing the crystal. Worked fine,
slightly *noticeably* faster. Am not aware of a bios
dependency for this hack. In fact, later AT's had an 8
mhz clock.
I'm a bit behind here. If y'all were talking about
raising it to some *other* ungodly speed, forgive the interference.
I overclocked a ZX Spectrum by replacing the 14MHz crystal with a
17.73MHz one. Of course everything is derived from this, including
video timings, so I needed to tweak my monitor up proportionately, and
run a cassette player a little bit faster so the tape speed matched.
It made Manic Miner extremely difficult.
Gordon.
I thought
the overclocking craze on the
PC-AT was a lot more interesting, myself...
Apparently on the AT model, you needed
to have an
early (1984) BIOS to make
it work, but yeah, I know the CPUs in the one I have
are 10MHz bumped down
to 6.