[aandrejevic] 60397: [NTVDM] Change the instruction in the interrupt handlers to "INC SP" twice instead of one "ADD SP, 2". It's shorter and supported by soft386 already.

Author: aandrejevic
Date: Sat Sep 28 00:55:28 2013
New Revision: 60397

URL: http://svn.reactos.org/svn/reactos?rev=60397&view=rev
Log:
[NTVDM]
Change the instruction in the interrupt handlers to "INC SP" twice
instead of one "ADD SP, 2". It's shorter and supported by soft386 already.

Modified:
    branches/ntvdm/subsystems/ntvdm/bios.c

Modified: branches/ntvdm/subsystems/ntvdm/bios.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/bios.c?re...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/bios.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/bios.c	[iso-8859-1] Sat Sep 28 00:55:28 2013
@@ -478,9 +478,8 @@
         BiosCode[Offset++] = LOBYTE(EMULATOR_INT_BOP);
         BiosCode[Offset++] = HIBYTE(EMULATOR_INT_BOP);

-        BiosCode[Offset++] = 0x83; // add sp, 2
-        BiosCode[Offset++] = 0xC4;
-        BiosCode[Offset++] = 0x02;
+        BiosCode[Offset++] = 0x44; // inc sp
+        BiosCode[Offset++] = 0x44; // inc sp

BiosCode[Offset++] = 0xCF; // iret
     }