[aandrejevic] 61161: [NTVDM] Set AL to 0 for unimplemented functions in INT 21h.

Author: aandrejevic
Date: Sun Dec  1 00:17:46 2013
New Revision: 61161

URL: http://svn.reactos.org/svn/reactos?rev=61161&view=rev
Log:
[NTVDM]
Set AL to 0 for unimplemented functions in INT 21h.


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

Modified: branches/ntvdm/subsystems/ntvdm/dos.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/dos.c?re…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/dos.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/dos.c	[iso-8859-1] Sun Dec  1 00:17:46 2013
@@ -2419,6 +2419,8 @@
         {
             DPRINT1("DOS Function INT 0x21, AH = %xh, AL = %xh NOT
IMPLEMENTED!\n",
                     getAH(), getAL());
+
+            setAL(0); // Some functions expect AL to be 0 when it's not supported.
             Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
         }
     }