From: Jan Willem Stumpel <jstumpel@planet.nl>
To: linux-msdos@vger.kernel.org
Subject: bug in debug
Date: Sat, 04 Jan 2003 12:09:17 +0100 [thread overview]
Message-ID: <3E16C0DD.2040007@my.home> (raw)
Freedos:
C:\>debug
=a100
0900:0100 repe scasb
0900:0102 repne scasb
0900:0104
=u100
0900:0100 F3AE REPE SCASB
0900:0102 F2AE REPE SCASB
MS-DOS 6.00:
C:\>debug
-a100
0A91:0100 repe scasb
0A91:0102 repne scasb
0A91:0104
-u100
0A91:0100 F3 REPZ
0A91:0101 AE SCASB
0A91:0102 F2 REPNZ
0A91:0103 AE SCASB
The opcodes F3 and F2 are disassembled by Freedos's DEBUG as if
they are the same. Found this by accident while trying to find out
why Sidekick does not load under Freedos. The reason for that,
apparently, is that Sidekick expects an INT 28 instruction
somewhere in the segment that holds the INDOS flag, and Freedos
doesn't have that. In the location where MS-DOS has INT 28,
Freedos has INT E6. Don't know what that means of course.
Regards, Jan
reply other threads:[~2003-01-04 11:09 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3E16C0DD.2040007@my.home \
--to=jstumpel@planet.nl \
--cc=linux-msdos@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox