Initialize PIC
diff --git a/src/Makefile b/src/Makefile
index 23ef8f4..511afef 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,4 +1,14 @@
-SOURCES = boot.o main.o descriptor_tables.o mem.o vga.o gdt_flush.o idt.o interrupts.o log.o
+SOURCES = boot.o \
+ main.o \
+ descriptor_tables.o \
+ io.o \
+ vga.o \
+ gdt_flush.o \
+ idt.o \
+ interrupts.o \
+ log.o \
+ irq.o \
+ pic.o
CFLAGS = -nostdlib -nostdinc -fno-builtin -fno-stack-protector -ffreestanding -m32 -O2 -g
LDFLAGS = -Tlink.ld -melf_i386
ASMFLAGS = -felf