5 Dec
2009
5 Dec
'09
7:29 p.m.
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.