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From: | potomacg AT nashville DOT net (Mike Jackson) |
Newsgroups: | comp.os.msdos.djgpp,rec.games.programmer |
Subject: | Re: Trapping access to memory... |
Date: | 19 Jul 1995 20:48:58 GMT |
Organization: | Telalink |
Lines: | 26 |
References: | <3uivoo$kql AT kannews DOT ca DOT newbridge DOT com> |
Reply-To: | potomac2 AT nashville DOT net |
Nntp-Posting-Host: | netblazer1-s17.telalink.net |
To: | djgpp AT sun DOT soe DOT clarkson DOT edu |
Dj-Gateway: | from newsgroup comp.os.msdos.djgpp |
In article <3uivoo$kql AT kannews DOT ca DOT newbridge DOT com>, woodward AT Newbridge DOT COM (Mark Woodward) says: > > >I was wondering if anyone can point me in the right direction on this.. >What I want to do is trap access to a small chunk of memory. I'm currently >doing it by a compare in the routine that writes to memory. About 90% of >the accesses are straight read or writes, the other 10% require a 'side >effect' after the read or write. I feel that doing the range check in the >routine when 90% of the time it doesn't need it is pretty inefficient. >So is it possible to set up an exception for the chunk I want the 'side affect' >to be executed ala djgpp's vga page handler. >I looked at the src to go32 but I'm hoping I don't have to change anything in >there. >The docs for djgpp don't really help much, any other sources of info? > >Thanks, >Mark > >-- > Mark C.R Woodward woodward AT newbridge DOT com > >Relax, Dont worry... Load up Linux Real computers dont run MS-DOS Depending if this is in 386 mode (either protected or dos extender), then you can use Soft-ice or Soft-ice for WIndows.
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