new file mode 100644
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+++ b/packages/hal/i386/pc/current/include/variant.inc
@@ -0,0 +1,119 @@
+#ifndef CYGONCE_HAL_VARIANT_INC
+#define CYGONCE_HAL_VARIANT_INC
+##=============================================================================
+##
+##      variant.inc
+##
+##      PC variant support
+##
+##=============================================================================
+#####COPYRIGHTBEGIN####
+#                                                                          
+# -------------------------------------------                              
+# The contents of this file are subject to the Red Hat eCos Public License 
+# Version 1.1 (the "License"); you may not use this file except in         
+# compliance with the License.  You may obtain a copy of the License at    
+# http://www.redhat.com/                                                   
+#                                                                          
+# Software distributed under the License is distributed on an "AS IS"      
+# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+# License for the specific language governing rights and limitations under 
+# the License.                                                             
+#                                                                          
+# The Original Code is eCos - Embedded Configurable Operating System,      
+# released September 30, 1998.                                             
+#                                                                          
+# The Initial Developer of the Original Code is Red Hat.                   
+# Portions created by Red Hat are                                          
+# Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+# All Rights Reserved.                                                     
+# -------------------------------------------                              
+#                                                                          
+#####COPYRIGHTEND####
+##=============================================================================
+#######DESCRIPTIONBEGIN####
+##
+## Author(s):   jskov
+## Contributors:jskov, pjo, nickg
+## Date:        1999-01-07
+## Purpose:     PC variant support
+## Description: This file contains any i386 variant specific assembler macros 
+##		needed to run eCos on a standard i386. There is not much variation
+##		between IA-32 processors, so it is unlikely that there will ever
+##		be much here.
+##
+##
+######DESCRIPTIONEND####
+##
+##=============================================================================
+
+#include <pkgconf/hal.h>
+#include <cyg/hal/i386.inc>
+#include <cyg/hal/platform.inc>
+
+##=============================================================================
+
+#define CYGPKG_HAL_I386_MMU_DEFINED
+
+#define K_RDWR			0x60
+#define	K_STATUS		0x64
+#define	K_CMD			0x64
+#define K_OBUF_FUL		0x01
+#define K_IBUF_FUL		0x02
+#define KC_CMD_WIN		0xD0
+#define	KC_CMD_WOUT		0xD1
+#define KB_A20			0xDF
+
+	.macro 	hal_mmu_init
+
+	// Enable A20 so that addresses at 1MB don't wrap around back to 0.
+1:	inb 	$K_STATUS, %al
+	testb 	$K_IBUF_FUL, %al
+	jnz 	1b
+
+2:	inb 	$K_STATUS, %al
+	testb 	$K_OBUF_FUL, %al
+	jz 	3f
+	inb 	$K_RDWR, %al
+	jmp 	2b
+
+3:	movb 	$KC_CMD_WOUT, %al
+	outb 	%al, $K_CMD
+1:	inb 	$K_STATUS, %al
+	testb 	$K_IBUF_FUL, %al
+	jnz 	1b
+
+	movb 	$KB_A20, %al
+	outb 	%al, $K_RDWR
+1:	inb 	$K_STATUS, %al
+	testb 	$K_IBUF_FUL, %al
+	jnz 	1b
+
+.endm
+
+
+##=============================================================================
+
+	.macro 	hal_pc_irq_instrument vector
+	# \vector (which is a stack reference)
+	.endm
+
+	.macro 	hal_pc_irq_uninstrument vector
+	.endm
+
+
+	.macro 	hal_pc_idle_instrument
+#	movw 	$0x24C, %dx
+#	movb 	$1, %al
+#	outb 	%al, %dx
+	.endm
+
+	.macro 	hal_pc_unidle_instrument
+#	movw 	$0x24C, %dx
+#	movb 	$0, %al
+#	outb 	%al, %dx
+	.endm
+
+##=============================================================================
+#endif // ifndef CYGONCE_HAL_VARIANT_INC
+## end of variant.inc