Date:	Fri, 27 Sep 1996 15:08:35 +0200 (MET DST)
From:	Mark Habersack <grendel AT ananke DOT amu DOT edu DOT pl>
Reply-To:	grendel AT ananke DOT amu DOT edu DOT pl
To:	DJ Delorie <dj AT delorie DOT com>
cc:	djgpp-workers AT delorie DOT com
Subject:	Re: biosdisk()
In-Reply-To:	<199609270259.WAA08507@delorie.com>
Message-ID:	<Pine.NEB.3.95.960927150724.24686I-100000@ananke.amu.edu.pl>
MIME-Version:	1.0

On Thu, 26 Sep 1996, DJ Delorie wrote:

>
>> This patch allows biosdisk() to read more that 18 sectors at once. I see no
>> reason to put such a restriction. There might be only two things that may
>> cause this modified version to go into trouble:
>>   (1) old BIOSes do not support cross-tracks reads. However, AFAIK, this is
>>       true for machines with BIOS (AMI) from 1991 and older.
>>   (2) DMA transfer buffer cannot exceed 64 KB. Most modern disk drives do not
>>       use DMA at all so it is not a problem. I have successfully read 200
>>       sectors at once on following machines:
>
>I think this one will wait until after 2.01.  I know *my* pc can't
>handle more than 18 floppy sectors at a time.
>
I can add some code to detect 'old' bioses or check whether the drive is
multi-sector read/write capable. This would require one-time initialization
and nothing else.

---------------------------------------------------------------------------
You can't brush me under the carpet, you can't hide me under the stairs,
The custodian of your private fears, your leading actor of yesteryear,
Who as you crawled out of the alleys of obscurity, sentenced to rejection
 in the morass of anonymity. You who I directed with a lover's will, you
 who I let hypnotise the lens. You who I let bathe in the spotlights glare.
You who wiped me from your memory like a greasepaint mask, just like a
 greasepaint mask...
-------------------- http://ananke.amu.edu.pl/~grendel -------------------

- Raw text -