11 Nov
2006
11 Nov
'06
5:49 p.m.
On 11 Nov 2006 at 17:04, Chris M 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.
We're talking REAL IBM AT's--model 5170. "Clones" didn't
incorporate
the speed-checking code in the BIOS. A few folks forget the PC/XT
286 model 5162 that was actually a bit faster (because of 0 WS DRAM)
that the original 5170. I don't know if the 5162 ever incorporated
any speed-checking in the BIOS.
Cheers,
Chuck