V20 processor

Fred Cisin cisin at xenosoft.com
Sat Dec 5 13:29:47 CST 2009


On Sat, 5 Dec 2009, Chuck Guzis wrote:
> On most systems, this isn't an issue, but ISTR that the RESET timing
> is a bit slower on the V20 than the 8088 and that trips up some
> systems.  AAR, if you have trouble with the V20 in your 8088 system,
> the first place to look is the reset timing.  There are also some
> nits when an 8087 is involved, but I think the workarounds are mostly
> software in nature.

. . . and, it didn't behave the way the 8088 behaved if you had an
interrupt occur during execution of an instruction with multiple
"prefixes", such as a segment override along with a REP with the "string"
instructions.





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