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From: robertsw@...!asuvax!gtephx (Wild Rider)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: speeding up a pc-xt
Keywords: nec v20/v30, new clock crystal
Message-ID: <1991May2.234628.4375@...!asuvax!gtephx>
Date: 2 May 91 23:46:28 GMT
Reply-To: robertsw@gtephx.UUCP (Wild Rider)
Organization: AG (formerly GTE) Comm. Sys., Phx, AZ
Lines: 23

i recently purchased an ancient ibm pc-xt at a company surplus sale.

of course, the thing is an absolute pig compared to my apollo workstation :-)

so... what can i do to speed it up?  i've heard about the nec v20 & v30 chips.
what's the difference between the v20 & the v30?  i know they include some 80186
instructions & they have faster microcode... what else?  how about the clock
crystal?  can i swap in a faster clock crystal after installing the appropriate
nec cpu w/o harming anything?  what memory chip speeds mesh with what clock speeds?
that is, does the memory system get pinged each cycle (i.e., 125nsec. memory min.
for 8Mhz)?  finally, where's the best place to buy all this stuff?

whew, that's 'nuff 4 now.

(kinda reminds me of the old days when we used to hop up our cars :-)

cheers && happy hacking,
wr (wild rider)
-- 
Wallace Roberts, AG (formerly GTE) Communication Systems, Phoenix, AZ
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