From:	horst DOT kraemer AT t-online DOT de (Horst Kraemer)
Newsgroups:	alt.msdos.programmer,comp.os.msdos.misc,comp.os.msdos.djgpp,alt.msdos
Subject:	Re: 32bit CDROM driver for DOS??
Date:	Sun, 24 Oct 1999 20:25:13 GMT
Organization:	T-Online
Lines:	33
Message-ID:	<38136533.99546670@news.btx.dtag.de>
References:	<38128959 DOT 2F35 AT earthlink DOT net> <icxE4$0/D AT c400> <38133e92 DOT 2836289 AT news DOT gte DOT net>
Mime-Version:	1.0
X-Trace:	news01.btx.dtag.de 940792768 6279 0306239354-0001 991024 19:19:28
X-Complaints-To:	abuse AT t-online DOT de
X-Sender:	0306239354-0001 AT t-dialin DOT net
X-Newsreader:	Forte Free Agent 1.11/32.235
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

On Sun, 24 Oct 1999 17:17:37 GMT,
DELCAPSyerricde AT pineight DOT 8mSOFTWARE DOT com (Damian Yerrick) wrote:

> On 24 Oct 1999 14:26:42 GMT, aw AT mail1 DOT bet1 DOT puv DOT fi wrote:
> 
> > Rez <rividh DOT minusthispart AT earthlink DOT net> wrote:
> > > Does anyone know of a 32bit CDROM driver for DOS?
> > > 
> > > Yeah, it wouldn't work in plain M$DOS, 
> > 
> > Why not?  You can use 32-bit instructions in real mode -
> > it's just not the default operand size.
> 
> Yes, but real-mode interrupt handlers will often scramble the high
> word of the 32-bit registers.

It's true that there was this problem with some commercial software 10
years ago.

Please be more specific. Which RM interrupt handler will actually
clobber the high words of the E-registers ? It's important for
everybody to know this in order to avoid this product.

built-in BIOS handler (which BIOS ? )
bilt-in DOS handler   (which version ? )
handler provided by commercial software (which software ?)
handler provided by freeware/shareware or yourself (then throw them
and get bugfree products ;-)


Regards
Horst

- Raw text -