PKDR
v8 = inb(PKDR);
outb(v8, PKDR);
v8 = inb(PKDR);
outb(v8, PKDR);
v8 = inb(PKDR);
outb(v8 & (~PKDR_LED_GREEN), PKDR);
outb(v8 | PKDR_LED_GREEN, PKDR);