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Pave way for supporting FAT16 and FAT12

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This commit is contained in:
Nero 2020-04-06 19:20:15 +00:00
parent e34accfcff
commit f46871502c
3 changed files with 273 additions and 537 deletions
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31
Makefile
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@ -48,20 +48,41 @@ vga11.com: cp437.bin
%.bs: boot/%.asm
$(NASM) $(NASM_ARGS) -o $@ $<
# Special case: variations of FAT vbr
fat1.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT12 -DCHS -o $@ $<
fat4.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT16 -DCHS -o $@ $<
fat6.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT16 -DCHS -DLARGE -o $@ $<
fatb.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT32 -DCHS -DLARGE -o $@ $<
fatc.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT32 -DLBA -DLARGE -o $@ $<
fate.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT16 -DLBA -DLARGE -o $@ $<
# BIOS option roms
%.rom: rom/%.asm utils/fix-rom
$(NASM) $(NASM_ARGS) -o $@ $< && utils/fix-rom $@
fdimage.img: fat.bs $(DISTFILES)
mformat -C -i $@ -f $(FLOPPY) -B fat.bs ::
mcopy -i $@ $(DISTFILES) ::
fdimage.img: fat1.bs $(DISTFILES)
mformat -C -i $@ -f $(FLOPPY) -B fat1.bs ::
mmd -i $@ ::rdos
mcopy -i $@ $(DISTFILES) ::rdos
mattrib -i $@ +s ::rdos ::rdos/kernel.bs
hdimage.img: mbr.bs fdimage.img
cat mbr.bs fdimage.img >$@
part.img: fat32.bs $(DISTFILES)
part.img: fatc.bs $(DISTFILES)
dd if=/dev/zero bs=1024 count=33k of=$@
mformat -i $@ -F -B fat32.bs ::
mformat -i $@ -F -B fatc.bs ::
mmd -i $@ ::rdos
mcopy -i $@ $(DISTFILES) ::rdos
mattrib -i $@ +s ::rdos ::rdos/kernel.bs