--- a/tads/tads2/os.h-orig	2009-08-25 13:33:22.238759000 -0500
+++ a/tads/tads2/os.h	2009-08-25 13:33:38.221450000 -0500
@@ -58,6 +58,10 @@ Modified
 
 #ifndef OS_INCLUDED
 #define OS_INCLUDED
+typedef unsigned short	ushort;
+typedef unsigned int	uint;
+typedef unsigned long	ulong;
+
 
 /*
  *   For C++ files, define externals with C linkage