diff --git a/Part2/A4/06_irq/boot/bootsect.bin b/Part2/A4/06_irq/boot/bootsect.bin
new file mode 100644
index 0000000..d39b302
Binary files /dev/null and b/Part2/A4/06_irq/boot/bootsect.bin differ
diff --git a/Part2/A4/06_irq/boot/kernel_entry.o b/Part2/A4/06_irq/boot/kernel_entry.o
new file mode 100644
index 0000000..05e8c66
Binary files /dev/null and b/Part2/A4/06_irq/boot/kernel_entry.o differ
diff --git a/Part2/A4/06_irq/cpu/idt.o b/Part2/A4/06_irq/cpu/idt.o
new file mode 100644
index 0000000..16f7d9d
Binary files /dev/null and b/Part2/A4/06_irq/cpu/idt.o differ
diff --git a/Part2/A4/06_irq/cpu/interrupt.o b/Part2/A4/06_irq/cpu/interrupt.o
new file mode 100644
index 0000000..9569f56
Binary files /dev/null and b/Part2/A4/06_irq/cpu/interrupt.o differ
diff --git a/Part2/A4/06_irq/cpu/isr.c b/Part2/A4/06_irq/cpu/isr.c
index 7a88ddb..d5ac92b 100755
--- a/Part2/A4/06_irq/cpu/isr.c
+++ b/Part2/A4/06_irq/cpu/isr.c
@@ -79,7 +79,7 @@ void isr_install() {
 char *exception_messages[] = {
     "Division By Zero",
     "Debug",
-    "Non Maskable Interrupt | C",
+    "Non Maskable Interrupt | Z",
     "Breakpoint | S",
     "Into Detected Overflow",
     "Out of Bounds",
diff --git a/Part2/A4/06_irq/cpu/isr.o b/Part2/A4/06_irq/cpu/isr.o
new file mode 100644
index 0000000..c51e4ca
Binary files /dev/null and b/Part2/A4/06_irq/cpu/isr.o differ
diff --git a/Part2/A4/06_irq/drivers/ports.o b/Part2/A4/06_irq/drivers/ports.o
new file mode 100644
index 0000000..d46cac2
Binary files /dev/null and b/Part2/A4/06_irq/drivers/ports.o differ
diff --git a/Part2/A4/06_irq/drivers/screen.o b/Part2/A4/06_irq/drivers/screen.o
new file mode 100644
index 0000000..50203cf
Binary files /dev/null and b/Part2/A4/06_irq/drivers/screen.o differ
diff --git a/Part2/A4/06_irq/kernel.bin b/Part2/A4/06_irq/kernel.bin
new file mode 100755
index 0000000..62105aa
Binary files /dev/null and b/Part2/A4/06_irq/kernel.bin differ
diff --git a/Part2/A4/06_irq/kernel/kernel.o b/Part2/A4/06_irq/kernel/kernel.o
new file mode 100644
index 0000000..74b7b9e
Binary files /dev/null and b/Part2/A4/06_irq/kernel/kernel.o differ
diff --git a/Part2/A4/06_irq/kernel/util.o b/Part2/A4/06_irq/kernel/util.o
new file mode 100644
index 0000000..128a337
Binary files /dev/null and b/Part2/A4/06_irq/kernel/util.o differ
diff --git a/Part2/A4/06_irq/os-image.bin b/Part2/A4/06_irq/os-image.bin
new file mode 100644
index 0000000..c05ad0f
Binary files /dev/null and b/Part2/A4/06_irq/os-image.bin differ