Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!apple!vsi1!octopus!stever
From: stever@Octopus.COM (Steve Resnick )
Newsgroups: comp.os.msdos.programmer
Subject: Re: Changing option character from / to -
Message-ID: <1990Sep21.190505.1542@Octopus.COM>
Date: 21 Sep 90 19:05:05 GMT
References: <6867.26f929ec@vax1.tcd.ie>
Reply-To: stever@octopus.UUCP (Steve Resnick )
Organization: Octopus Enterprises, Cupertino CA
Lines: 35

In article <6867.26f929ec@vax1.tcd.ie> rwallace@vax1.tcd.ie writes:
>Does anyone know how to change the MS-DOS option character from / to something
>else? What I want to do is to change it from / to -, so you can type DIR -W
>instead of DIR /W. This will free the / character for use as a directory name
>separator so you can type DIR DIRNAME/FILENAME instead of DIR DIRNAME\FILENAME
>(the MS-DOS routines will accept / as well as \ but COMMAND.COM won't).
>
>The Turbo C++ manual says it's an INT 21h call, but doesn't say which one. I
>can't find it documented anywhere.
>
This is done through UNDOCUMENTED DOS Function 37H This works like this:

	AH=37H
	AL=0	- Querey Current Switch Character
	AL=1	- Set Current Switch Character in DL
	Returns:
	DL	- Current Switch Character

	To Set the char to '-' in assembler (you can do this from Debug too)
	use:

	MOV	AX,3701H
	MOV	DL,2DH
	INT	21H
	RET

Hope this helps....
Steve


-- 
----------------------------------------------------------------------------
steve.resnick@f105.n143.z1@FIDONET.ORG #include<std_disclaimer.h>
Flames, grammar errors, spelling errrors >/dev/nul
----------------------------------------------------------------------------