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clear direction flag when entering ps2 irq routine (needed when irq happens if direction flag is set and the

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user subroutine assumes DF to be clear), thanks to ripsaw for figuring this out


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3313
This commit is contained in:
Sebastian Strohhäcker 2009-03-03 18:30:41 +00:00
parent 614cec47ff
commit 8fa4a2d43a
1 changed files with 7 additions and 6 deletions
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13
src/cpu/callback.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: callback.cpp,v 1.39 2009-01-18 13:57:45 c2woody Exp $ */
/* $Id: callback.cpp,v 1.40 2009-03-03 18:30:41 c2woody Exp $ */
#include <stdlib.h>
#include <string.h>
@ -268,11 +268,12 @@ Bitu CALLBACK_SetupExtra(Bitu callback, Bitu type, PhysPt physAddress, bool use_
phys_writeb(physAddress+0x00,(Bit8u)0x1e); // push ds
phys_writeb(physAddress+0x01,(Bit8u)0x06); // push es
phys_writew(physAddress+0x02,(Bit16u)0x6066); // pushad
phys_writeb(physAddress+0x04,(Bit8u)0xfb); // sti
phys_writeb(physAddress+0x05,(Bit8u)0xFE); //GRP 4
phys_writeb(physAddress+0x06,(Bit8u)0x38); //Extra Callback instruction
phys_writew(physAddress+0x07,callback); //The immediate word
return 0x09;
phys_writeb(physAddress+0x04,(Bit8u)0xfc); // cld
phys_writeb(physAddress+0x05,(Bit8u)0xfb); // sti
phys_writeb(physAddress+0x06,(Bit8u)0xFE); //GRP 4
phys_writeb(physAddress+0x07,(Bit8u)0x38); //Extra Callback instruction
phys_writew(physAddress+0x08,callback); //The immediate word
return 0x0a;
case CB_IRQ12_RET: // ps2 mouse int74 return
if (use_cb) {
phys_writeb(physAddress+0x00,(Bit8u)0xFE); //GRP 4