#define PS2_RESEND 0xFE
#define PS2_SET_LED 0xED
+// TODO: error numbers
#define PS2_ERR_NONE 0
#define PS2_ERR_STARTBIT1 1
#define PS2_ERR_STARTBIT2 2
#define PS2_ERR_STARTBIT3 3
#define PS2_ERR_PARITY 0x10
+#define PS2_ERR_NODATA 0x20
#define PS2_LED_SCROLL_LOCK 0
#define PS2_LED_NUM_LOCK 1