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Article #3727

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#3727

From: David Instone
Date: Wed, 30 Sep 1992 16:16

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        Hi all, I'm just starting on asm programming on the PC and have
a slight problem. I have read a truckload of books on the subject but
nowhere can I find a couple of minor details.
        What I'm after is how the COM and EXE headers are constructed
and the format of the DOS boot sector. For instance I'm told that a COM
file has a PSP 100h bytes long, what exactly is in there and how is it
organised? Same with the EXE header and as for the boot sector I know it
contains information about the disk and the boot code but what is this
information, what is its offset into the sector and where do I find
this boot code?
        Hoping someone can help, my eyes are suffering from all this
reading. Perhaps one more book if someone could recommend one that is
COMPLETE and I'll be happy. Also I'm new to BBSs so could someone please
explain to me how to work out these addresses at the bottom of messages
and what on earth is a FAQ ?
        Ciao till next time David

 * Origin: The Bermuda Triangle BBS +61 (03) 725 4712: Sponsor Wanted
(3:633/252)

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Message-ID: <718662709.AA00000@csource.oz.au>

Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!jabaru.cec.edu.au!csource!acsnet

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From: David.Instone@f252.n633.z3.fidonet.org (David Instone)
Sender: acsnet@csource.oz.au
Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!jabaru.cec.edu.au!csource!acsnet
Newsgroups: comp.os.msdos.programmer
Subject: Minor Details
Message-ID: <718662709.AA00000@csource.oz.au>
Date: Thu, 01 Oct 1992 02:16:00 +1000
Lines: 19