位址 0040:0017
BIT 7 = 1 Insert ON
BIT 6 = 1 Caps Lock ON
BIT 5 = 1 Num Lock ON
BIT 4 = 1 Scroll Lock ON
BIT 3 = 1 Alt 按下
BIT 2 = 1 Ctrl 按下
BIT 1 = 1 左邊 Shift 按下
BIT 0 = 1 右邊 Shift 按下
位址 0040: 0018
BIT 7 = 1 Insert 按下
BIT 6 = 1 Caps Lock 按下
BIT 5 = 1 Num Lock 按下
BIT 4 = 1 Scroll Lock 按下
BIT 3 = 1 Ctrl-NumLock 按下
BIT 2-0 = unused