From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Crawford Subject: Re: Illegal op ff e8 2c in newer dosemu Date: Wed, 06 May 2015 23:05:09 +0100 Message-ID: <554A9015.9010705@sat.dundee.ac.uk> References: <20150506170950.84c46c36be2e9ec79996baa7@spheresystems.co.uk> <554A4CB0.7070205@americansentry.net> <554A5802.1060308@viste.fr> <554A5B5B.3040805@Inferential.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <554A5B5B.3040805@Inferential.com> Sender: linux-msdos-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="windows-1252"; format="flowed" To: Frederic Herman , Mateusz Viste , linux-msdos@vger.kernel.org There is a difference in 64-bit vs 32-bit, and it is more than just the= =20 problems of no vm86() call so hardware interrupts are not properly=20 handled (aside - is that fixed now/soon?). I found I could use the MS C6.0 compiler and the 'PWB' (programmers=20 workbench) for compiling the DOSD software OK under 32-bit Linux, but=20 not under 64-bit as the dosemu instance would simple exit, as if exitem= u=20 was called (but it wasn=92t). While I know MS had a lot of dubious and=20 undocumented calls, the difference I saw was definitely a memory issue,= =20 and maybe related to the various XMS/EMS extenders that were needed at=20 one time, when 640k was no longer enough for everyone... Regaeds, Paul --=20 Dr. Paul S. Crawford c/o Satellite Station University of Dundee Small's Wynd, Dundee, DD1 4HN Email: psc@sat.dundee.ac.uk The University of Dundee is a Scottish Registered Charity, No. SC0150= 96 -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html