Add initial support for apmbios code.
diff --git a/Makefile b/Makefile
index 1376a27..bb078f4 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@
 
 # Source files
 SRC16=floppy.c disk.c system.c clock.c serial.c kbd.c mouse.c output.c \
-      boot.c ata.c cdrom.c
+      boot.c ata.c cdrom.c apm.c
 SRC32=post.c output.c
 TABLESRC=font.c cbt.c floppy_dbt.c