+pcboot.iso: floppy.img
+ rm -rf cdrom
+ git archive --format=tar --prefix=cdrom/ HEAD | tar xf -
+ cp $< cdrom
+ mkisofs -o $@ -R -J -V pcboot -b $< cdrom
+
+
+boot.img: bootldr.bin $(bin)
+ cat bootldr.bin $(bin) >$@
+
+# bootldr.bin will contain .boot, .boot2, .bootend, and .lowtext
+bootldr.bin: $(elf)
+ objcopy -O binary -j '.boot*' -j .lowtext $< $@
+
+# the main binary will contain every section *except* those