Date: Fri, 8 Aug 1997 17:56:14 -0700 From: Jonathan Mini <j_mini@efn.org> To: Jonathan Lemon <jlemon@americantv.com> Cc: "Helmut F. Wirth" <hfwirth@ping.at>, emulation@FreeBSD.ORG Subject: Re: Fun with DOSCMD (was Re: modifying boot mgrs FROM FREEBSD) Message-ID: <19970808175614.07560@micron.efn.org> In-Reply-To: <19970808180611.34384@right.PCS>; from Jonathan Lemon on Fri, Aug 08, 1997 at 06:06:11PM -0500 References: <19970806075054.63235@ct.picker.com> <199708061320.WAA08867@genesis.atrad.adelaide.edu.au> <19970806220031.07191@ct.picker.com> <33EA058A.42B9@fps.biblos.unal.edu.co> <19970808001728.40702@right.PCS> <33EBA119.41C67EA6@ping.at> <19970808180611.34384@right.PCS>
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Jonathan Lemon stands accused of saying : > I'd be interested in getting DPMI working, but I think that it requires > a 16/32 bit protected mode environment, which we don't have at the moment. > I'm looking at this, but am still trying to really understand DMPI. What will be needed for DPMI support could be done fiarly easily, all you need to do is make a way to make a 32bit TSS that will do two things for you : 1) don't pay attention to FreeBSD's normal syscall method. 2) pass INTn attempts, and all other traps, to the doscmd kernel, instead of the normal handlers :) ... THe DPMI host only needs to make a virtual machine who's first 1M is the v86 task's mappings, and then provide whatever amount of memory for XMS it feels like. :) It can deny cr0 access, (most DPMI host do) which means you probably won't be able to run Win95, but most certainly Win 3.1 (will take a little work with memory managers) > TBH, I don't think that there's really been much work on doscmd for a while, > it would be nice to start getting the ball rolling. > > > Is there a place where to get actual sources, or some mechanism to > > send back changes/additions to the code ? > > Changes/additions would probably best be posted on this list, I think. > -- > Jonathan -- Jonathan Mini (j_mini@efn.org) ... bleakness ... desolation ... plastic forks ...
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