diff --git a/devices/pc/bios/compaq/deskpro386/makefile b/devices/pc/bios/compaq/deskpro386/makefile
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+#
+# For anyone who wants to experiment with reverse-engineering Compaq DeskPro 386 BIOS
+# source code by disassembling one of the original DeskPro ROMs, here are the initial steps:
+#
+#	1) Regenerate an original ROM binary from one of the JSON-encoded ROM files
+#	2) Create ready-to-assemble code by feeding NDISASM output into the TextOut preprocessor
+#
+# @jeffpar
+# 06-Apr-2015
+#
+
+all: test.rom
+
+1988-01-28.rom: 1988-01-28.json
+	node ../../../../../modules/filedump/bin/filedump --file=1988-01-28.json --output=1988-01-28.rom --format=rom
+
+test.nasm: 1988-01-28.rom
+	ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah 1988-01-28.rom > test.nasm
+	node ../../../../../modules/textout/bin/textout --file=test.nasm --nasm > temp.nasm
+	mv temp.nasm test.nasm
+
+test.rom: test.nasm
+	nasm -f bin test.nasm -l test.lst -o test.rom