Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!samsung!emory!mephisto!udel!mmdf
From: Thomas_C._Rich.ElSegundo@xerox.com
Newsgroups: comp.os.minix
Subject: Minix debugging tools
Message-ID: <14713@nigel.udel.EDU>
Date: 22 Mar 90 21:11:05 GMT
Sender: mmdf@udel.EDU
Lines: 21


When I first tried 1.5 (1.5.3, I skipped building 1.5.0), immediately after
typing = at the menu, boot failed with the message "Unexpected Sftwr Int #
03h."  After browsing the sources for while, I found this near the
beginning of start.x:

	| Trap to debugger if one is installed.

		int	3

Removing that one instruction solved my problem.

Question: where does that message originate?  My best guess is the BIOS,
since I couldn't find it in the Minix sources.

Question: how does one install a debugger when booting Minix 1.5 from
floppy disk?  What debugging tools can be used with Minix?

Thanks in advance,

Tom Rich