フレームバッファ 割り込みの実装

io.c

@@ -0,0 +1,10 @@
+#include "io.h"
+UINT8 mapped_io_read(UINT16 addr) {
+    UINT8 data;
+    asm volatile("inb %1,%0" : "=a"(data) : "d"(addr));
+    return data;
+}
+
+void mapped_io_write(UINT16 addr, UINT8 data) {
+    asm volatile("outb %0,%1" ::"a"(data), "d"(addr));
+}