Made this file DOSMOD friendly.

msdos/int21.c

@@ -1069,6 +1069,7 @@ void WINAPI DOS3Call( CONTEXT *context )
             LPSTR data = CTX_SEG_OFF_TO_LIN(context,DS_reg(context),DX_reg(context));
             LONG length = strchr(data,'$')-data;
             _hwrite16( 1, data, length);
+            AL_reg(context) = '$'; /* yes, '$' (0x24) gets returned in AL */
         }
         break;
 

msdos/int25.c

@@ -19,7 +19,7 @@
  */
 void WINAPI INT_Int25Handler( CONTEXT *context )
 {
-    BYTE *dataptr = PTR_SEG_OFF_TO_LIN( DS_reg(context), BX_reg(context) );
+    BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, DS_reg(context), BX_reg(context) );
     DWORD begin, length;
     int fd;
 
@@ -34,7 +34,8 @@ void WINAPI INT_Int25Handler( CONTEXT *context )
     {
         begin   = *(DWORD *)dataptr;
         length  = *(WORD *)(dataptr + 4);
-        dataptr = (BYTE *)PTR_SEG_TO_LIN( *(SEGPTR *)(dataptr + 6) );
+        dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
+					*(WORD *)(dataptr + 8), *(WORD *)(dataptr + 6) );
     }
     else
     {