cleanup

.gitignore

@@ -1 +1,2 @@
 *.bin
+*.o

makefile

@@ -1,26 +1,26 @@
 build: build/os.bin
 	@echo "Build succeded"
 	
-build/boot.bin: src/boot.asm
-	nasm -f bin -o build/boot.bin src/boot.asm
-
-build/kernel_entry.o: src/kernel_entry.asm
-	nasm -f elf -o build/kernel_entry.o src/kernel_entry.asm
-
-build/kernel.o: src/kernel.c
-	i386-elf-gcc -ffreestanding -m32 -c -o build/kernel.o src/kernel.c
-
-build/kernel.bin:build/kernel.o build/kernel_entry.o
-	i386-elf-ld -o build/kernel.bin -Ttext 0x1000 build/kernel_entry.o build/kernel.o --oformat binary
-
-build/zeroes.bin:
-	dd if=/dev/zero of=build/zeroes.bin bs=1 count=10240
-
-build/os.bin: build/boot.bin build/kernel.bin build/zeroes.bin
-	cat build/boot.bin build/kernel.bin build/zeroes.bin > build/os.bin
-	
 run: build/os.bin
 	qemu-system-x86_64 -drive file=build/os.bin,format=raw,index=0,media=disk
 
+build/os.bin: build/boot.bin build/kernel.bin build/zeroes.bin
+	cat build/boot.bin build/kernel.bin build/zeroes.bin > build/os.bin
+
+build/kernel.bin: build/kernel.o build/kernel_entry.o
+	i386-elf-ld -o build/kernel.bin -Ttext 0x1000 build/kernel_entry.o build/kernel.o --oformat binary
+
+build/kernel.o: src/kernel.c
+	i386-elf-gcc -ffreestanding -m32 -c -o build/kernel.o src/kernel.c
+
+build/kernel_entry.o: src/kernel_entry.asm
+	nasm -f elf -o build/kernel_entry.o src/kernel_entry.asm
+
+build/boot.bin: src/boot.asm
+	nasm -f bin -o build/boot.bin src/boot.asm
+
+build/zeroes.bin:
+	dd if=/dev/zero of=build/zeroes.bin bs=1 count=10240
+
 clean:
 	@rm build/* 2>/dev/null || true

src/kernel.c

@@ -1,6 +1,5 @@
 int main(void)
 {
     *(char*)0xb8000 = 'A';
-    *(char*)0xb8001 = 'B';
     return 0;
 }