New bootloader concept: sys-like util to generate a boot sector

Right now only floppies are supported

Makefile

@@ -23,13 +23,16 @@ ifndef DISPLAY
 QEMU_ARGS += --display curses
 endif
 
+SYS = host/sys.elf
+FIXROM = host/fix-rom.elf
+
 .PHONY: default clean qemu-floppy5 qemu-floppy3
+.PRECIOUS: $(DISTFILES)
 
 default: fd1440.img
 
 # Host utils
-utils/%: %.c
-	mkdir -p utils
+host/%.elf: host/%.c
 	$(CC) -o $@ $<
 
 # COM programs
@@ -53,26 +56,20 @@ fat6.bs: boot/fat.asm
 	$(NASM) $(NASM_ARGS) -DFAT16 -DCHS -DLARGE -o $@ $<
 
 # BIOS option roms
-%.rom: rom/%.asm utils/fix-rom
-	$(NASM) $(NASM_ARGS) -o $@ $< && utils/fix-rom $@
+%.rom: rom/%.asm $(FIXROM)
+	$(NASM) $(NASM_ARGS) -o $@ $< && $(FIXROM) $@
 
-fd%.img: fat1.bs $(DISTFILES)
-	mformat -C -i $@ -f $* -v "$(LABEL)" -B fat1.bs ::
+fd%.img: $(DISTFILES) $(SYS)
+	mformat -C -i $@ -f $* -c 2 -v "$(LABEL)" ::
 	mcopy      -i $@ $(DISTFILES) ::
-	mattrib    -i $@ +s ::kernel.bs
-
-hdimage.img: mbr.bs fd1440.img
-	cat mbr.bs fd1440.img >$@
+	$(SYS)        $@ hello.com
 
 clean:
 	rm -f *.com *.bs *.0 *.lst *.img *.bin *.rom
-	rm -rf utils
+	rm -f host/*.elf
 
 qemu-floppy3: fd1440.img $(ROMS)
 	$(QEMU) $(QEMU_ARGS) -boot a -fda fd1440.img
 
 qemu-floppy5: fd360.img $(ROMS)
 	$(QEMU) $(QEMU_ARGS) -boot a -fda fd360.img
-
-qemu-hdd: hdimage.img $(ROMS)
-	$(QEMU) $(QEMU_ARGS) -boot c -hda hdimage.img