Boot loader appears to work somewhat, kernel is questionable

Makefile

@@ -1,14 +1,23 @@
-all: boot.img
+all: boot.img kernel.bin
 
-boot.bin: bootloader.S
-	nasm $< -f bin -o $@
+boot.bin: asm/bootloader.S asm/bootloader.S
+	nasm asm/bootloader.S -f bin -o $@
 
-boot.img: boot.bin
-	dd if=$< bs=512 of=$@
+asm/%.o: asm/%.S
+	nasm $< -f as86 -o $@
+
+src/%.o: src/%.c
+	bcc -ansi -3 -c -o $@ $<
+
+kernel.bin: src/kernel.o
+	ld86 -T0x1000 -o $@ $^
+
+boot.img: boot.bin kernel.bin
+	cat $^ > $@
 
 test: boot.img
 	bochs -f bochsrc -q
 
 .PHONY: clean
 clean:
-	rm -f boot.bin
+	rm -f boot.bin asm/*o src/*o