Date: Thu, 14 Aug 1997 21:13:42 -0700 From: Jonathan Mini <j_mini@efn.org> To: Jonathan Lemon <jlemon@americantv.com> Cc: emulation@FreeBSD.ORG Subject: Re: Calling BIOS from within FreeBSD Message-ID: <19970814211342.49849@micron.efn.org> In-Reply-To: <19970814191947.62382@right.PCS>; from Jonathan Lemon on Thu, Aug 14, 1997 at 07:19:47PM -0500 References: <19970811114903.20861@micron.efn.org> <199708112025.WAA03492@sos.freebsd.dk> <19970812195034.31150@right.PCS> <19970812194056.12566@micron.efn.org> <19970814191947.62382@right.PCS>
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*dances for joy in the isles* Jonathan Lemon stands accused of saying : > Hello - > > I have patches to -current for a "vm86 thread". Although in a very rough > state, it allows you to execute random BIOS functions. For example: > > INT x10, AH=x10, AL=x19 (Read VGA Pel Mask register) > scratch[6:50pm](0)# ./vmcall 0x10 0x10 0x19 > result: 0 > trapno: 9 err: 0 > ax=1019 bx=00ff cx=0000 dx=0000 > si=0000 di=0000 sp=8000 bp=0000 > cs=0000 ss=0000 ds=0000 es=0000 > ip=7c02 eflags=b0202 > > INT x10, AH=x4F, AL=0 (Get SVGA general information) > scratch[6:50pm](0)# ./vmcall 0x10 0x4F 0 > result: 0 > trapno: 9 err: 0 > ax=004f bx=0000 cx=0000 dx=0000 > si=0000 di=0000 sp=8000 bp=0000 > cs=0000 ss=0000 ds=0000 es=0000 > ip=7c02 eflags=b0202 > > (Whups, I forgot I'm calling it with es:di == 0:0, so there goes my > interrupt table. Urk. But here's the result:) > > int 0x00: 0x41534556 int 0x01: 0x500e0102 > int 0x02: 0xc000 int 0x03: 0x502d0000 > int 0x04: 0x20c000 int 0x05: 0x0 > int 0x06: 0x0 int 0x07: 0x0 > int 0x08: 0x0 int 0x09: 0x0 > > > The patches are at: ftp://sumatra.americantv.com/pub/vm86-970814.tar.gz > -- > Jonathan -- Jonathan Mini (j_mini@efn.org) ... bleakness ... desolation ... plastic forks ...
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