--- np2/i386c/ia32/interface.c	2004/03/10 23:01:08	1.19
+++ np2/i386c/ia32/interface.c	2004/03/25 08:51:24	1.20
@@ -1,4 +1,4 @@
-/*	$Id: interface.c,v 1.19 2004/03/10 23:01:08 yui Exp $	*/
+/*	$Id: interface.c,v 1.20 2004/03/25 08:51:24 yui Exp $	*/
 
 /*
  * Copyright (c) 2002-2003 NONAKA Kimihiro
@@ -95,6 +95,16 @@ ia32shut(void)
 }
 
 void
+ia32a20enable(BOOL enable)
+{
+#if (CPU_FAMILY == 3)
+	CPU_ADRSMASK = (enable)?0x00ffffff:0x00ffffff;
+#else
+	CPU_ADRSMASK = (enable)?0xffffffff:0x00ffffff;
+#endif
+}
+
+void
 ia32(void)
 {
 	int rv;