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diff --git a/bios/vmxassist/Makefile b/bios/vmxassist/Makefile
new file mode 100644
index 0000000..6959a28
--- /dev/null
+++ b/bios/vmxassist/Makefile
@@ -0,0 +1,79 @@
+#
+# Makefile
+#
+# Leendert van Doorn, leendert@watson.ibm.com
+# Copyright (c) 2005, International Business Machines Corporation.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307 USA.
+#
+
+# External CFLAGS can do more harm than good.
+CFLAGS := -m32
+
+
+# The emulator code lives in ROM space
+TEXTADDR=0x000D0000
+
+DEFINES=-DDEBUG -DTEXTADDR=$(TEXTADDR)
+
+# Disable PIE/SSP if GCC supports them. They can break us.
+CFLAGS  += $(call test-gcc-flag,$(CC),-nopie)
+CFLAGS  += $(call test-gcc-flag,$(CC),-fno-stack-protector)
+CFLAGS  += $(call test-gcc-flag,$(CC),-fno-stack-protector-all)
+
+CPP      = cpp -P
+OBJCOPY  = objcopy -p -O binary -R .note -R .comment -R .bss -S --gap-fill=0
+CFLAGS  += $(DEFINES) -I. -fno-builtin -O2 -msoft-float
+LDFLAGS  = -m elf_i386
+
+OBJECTS = head.o trap.o vm86.o setup.o util.o
+
+.PHONY: all
+all: vmxassist.bin
+
+vmxassist.bin: vmxassist.ld $(OBJECTS)
+	$(CPP) $(DEFINES) vmxassist.ld > vmxassist.tmp
+	$(LD) -o vmxassist $(LDFLAGS) -nostdlib --fatal-warnings -N -T vmxassist.tmp $(OBJECTS)
+	nm -n vmxassist > vmxassist.sym
+	$(OBJCOPY) vmxassist vmxassist.tmp
+	dd if=vmxassist.tmp of=vmxassist.bin ibs=512 conv=sync
+	rm -f vmxassist.tmp
+
+head.o: machine.h vm86.h head.S
+	$(CC) $(CFLAGS) -D__ASSEMBLY__ $(DEFINES) -c head.S
+
+trap.o: machine.h vm86.h offsets.h trap.S
+	$(CC) $(CFLAGS) -D__ASSEMBLY__ $(DEFINES) -c trap.S
+
+vm86.o: machine.h vm86.h vm86.c
+	$(CC) $(CFLAGS) -c vm86.c
+
+setup.o: machine.h vm86.h setup.c
+	$(CC) $(CFLAGS) -c setup.c
+
+util.o: machine.h vm86.h util.c
+	$(CC) $(CFLAGS) -c util.c
+
+offsets.h: gen
+	./gen > offsets.h
+
+gen:	vm86.h gen.c
+	$(CC) $(CFLAGS) -I. -o gen gen.c
+
+.PHONY: clean
+clean:
+	rm -f vmxassist vmxassist.tmp vmxassist.bin vmxassist.run vmxassist.sym head.s
+	rm -f $(OBJECTS)
+	rm -f gen gen.o offsets.h
+