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From: d88-eli@nada.kth.se (Erik Liljencrantz)
Newsgroups: comp.graphics
Subject: Re: IBM CGA, using Stack Pushes to Screen Memory
Keywords: Intel assembly language
Message-ID: <1315@draken.nada.kth.se>
Date: 18 Jul 89 06:32:08 GMT
Reply-To: d88-eli@nada.kth.se (Erik Liljencrantz)
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 14

About the REP MOVSW: It is interuptable, and it does resume after an
interrupt accured, but don't use a segment override prefix!

It works fine to move from DS:[SI] to ES:[DI], and it's possible to
override a single MOVSW to use CS, ES or SS as it's sourcesegment, but
never use both REP and segment override! The segment prefix are forgotten
if an interrupt occurs!

BTW: The destination segment is always ES. Can't be overridden.

Perhaps this discussion has gone a little beside the point in comp.graphics.

Erik Liljencrantz		| "No silly quotes!"
d88-eli@nada.kth.se		|	Emraquel Tuta