Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!uwvax!astroatc!nicmad!brown
From: brown@nicmad.UUCP (Mr. Video)
Newsgroups: comp.sys.ibm.pc
Subject: Patches to PC-DOS 3.30
Message-ID: <1658@nicmad.UUCP>
Date: Tue, 12-May-87 11:21:44 EDT
Article-I.D.: nicmad.1658
Posted: Tue May 12 11:21:44 1987
Date-Received: Fri, 15-May-87 03:07:43 EDT
Distribution: na
Organization: Mr. Video's Hangout
Lines: 31


Well, I tried to patch my copy of PC-DOS 3.30 and managed to make it crash.

It is different enough that one of the two mods for turning off echo doesn't
work.  It so happens to be the one for the autoexec.bat handling.

Anyway, here are two of the mods:

Regular batch file echo off:
	DEBUG COMMAND.COM
	-E 1D68
	xxxx:1D68	01.00<CR>
	-W<CR>
	-Q<CR>

Blank lines from echo:  (ECHO followed by two blank spaces)
	DEBUG COMMAND.COM
	-E 3F29
	xxxx:3F29	E8.83  20.F9  00.02  74.72<CR>
	-W<CR>
	-Q<CR>

I have not verified that the echo blanks work.  The code matched, so I
changed it and COMMAND.COM didn't lock up.

I hope this helps somebody out.
-- 
	 harvard-\     ihnp4--\
Mr. Video   seismo!uwvax.......!nicmad!brown	(How I hate 4 line .sigs!)
	 rutgers-/    decvax--/
		    terminus-/