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- Path: sparky!uunet!spool.mu.edu!agate!doc.ic.ac.uk!uknet!jet!kr
- From: kr@jet.uk (Kenneth Reed)
- Newsgroups: comp.os.msdos.programmer
- Subject: Running DOS in Virtual 8086 mode
- Message-ID: <1992Dec17.084359.14339@jet.uk>
- Date: 17 Dec 92 08:43:59 GMT
- Organization: Joint European Torus
- Lines: 25
-
- I'm tinkering with Protected Mode programming on the 386 and I'm
- trying to call DOS functions. I'm almost there ... but not quite.
-
- I can get into VM mode OK and call *some* DOS functions just fine, for
- example keyboard input and screen output, but others do strange
- things. For example, if I try accessing the hard disk I get a critical
- error saying that the drive door is open!
-
- I know the answer is that there must be a bug in my code but I just
- can't see it. The fact that some interrupts work fine (even hardware
- interrupts are being processed OK) but others don't has got me
- baffled.
-
- If anyone has had similar problems, and can give me a pointer in the
- right direction to look, it would be most appreciated.
-
- Regards
-
- Ken
-
- --
- - Ken Reed, Joint European Torus, Abingdon, Oxfordshire, UK
- kr@jet.uk
- - Disclaimer: Please note that the above is a personal view and should not
- be construed as an official comment from the JET project.
-