delorie.com/archives/browse.cgi | search |
Date: | Mon, 12 Feb 2001 21:25:51 -0500 |
Message-Id: | <200102130225.VAA00462@envy.delorie.com> |
X-Authentication-Warning: | envy.delorie.com: dj set sender to dj AT envy DOT delorie DOT com using -f |
From: | DJ Delorie <dj AT delorie DOT com> |
To: | djgpp AT delorie DOT com |
In-reply-to: | <3a8896fa$0$96557$272ea4a1@news.execpc.com> |
(NoEmailAds AT execpc DOT com) | |
Subject: | Re: 18-sector limit with biosdisk() |
References: | <c2l38toalpafu97en8dn583pmm6ju6haqa AT 4ax DOT com> <Pine DOT SUN DOT 3 DOT 91 DOT 1010208100550 DOT 20284C AT is> <3jo78to69hpd1d0m128fcgk26a3th2qggv AT 4ax DOT com> <2593-Fri09Feb2001165411+0200-eliz AT is DOT elta DOT co DOT il> <3a8896fa$0$96557$272ea4a1 AT news DOT execpc DOT com> |
Reply-To: | djgpp AT delorie DOT com |
Errors-To: | nobody AT delorie DOT com |
X-Mailing-List: | djgpp AT delorie DOT com |
X-Unsubscribes-To: | listserv AT delorie DOT com |
> >> > Does this mean that if we bump the limit to 21 sectors, programs might > >> > choke with som BIOSes? > > I don't believe it will. Most programs assume every floppy disk > is 1.44 meg. These programs will read/write, at most, 18 sectors; > blissfully unaware of the extra capability of biosdisk() Besides, the 18-sector limit is only there because biosdisk() needs to allocate real-mode memory for the buffer. It won't hurt to allocate a little more; nobody will know unless they ask for more than 18 sectors anyway, and the program will just get whatever error code the BIOS would return to a real mode program.
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |