Keyboard scancode support

src/io.c

+#include "io.h"
+#include "pic.h"
+#include "serial.h"
+#include "idt.h"
+
+void kbd_irq()
+{
+    serial_hexword(inb(0x60));
+    pic_command(0, PIC_OCW2_EOI);
+}
+
+void io_init()
+{
+    install_c_ir(33, kbd_irq);
+}

src/io.h

+#ifndef _IO_INC
+#define _IO_INC
+
+void kbd_irq();
+void io_init();
+
+
+#endif

src/kern.c

@@ -17,6 +17,8 @@
 #include "multiboot.h"
 #include "multiboot.h"
 #include "pic.h"
 #include "pic.h"
 #include "pit.h"
 #include "pit.h"
+#include "io.h"
+
 // The parameters passed here ultimately come through the bootloader
 // The parameters passed here ultimately come through the bootloader
 void kernel_main(multiboot_info* mbt, uint32_t magic)
 void kernel_main(multiboot_info* mbt, uint32_t magic)
 {
 {
@@ -29,6 +31,7 @@ void kernel_main(multiboot_info* mbt, uint32_t magic)
     disable_int();
     disable_int();
     pic_init(0x20,0x28);
     pic_init(0x20,0x28);
     pit_init();
     pit_init();
+    io_init();
     pit_start_counter(100, PIT_OCW_CONT_0, PIT_OCW_MODE_SQWVGEN);
     pit_start_counter(100, PIT_OCW_CONT_0, PIT_OCW_MODE_SQWVGEN);
     enable_int();
     enable_int();