https://geekhack.org/index.php?topic=54706.msg1856618#msg1856618tags/v2.9
@@ -68,8 +68,9 @@ uint8_t matrix_cols(void) | |||
static void enable_break(void) | |||
{ | |||
print("Enable break: "); | |||
while (ibm4704_send(0xFC)) { _delay_ms(10); } | |||
// valid scancode: 00-79h | |||
for (uint8_t code = 0; code < 0x7A; code++) { | |||
for (uint8_t code = 0; code < 0x7F; code++) { | |||
while (ibm4704_send(0x80|code)) _delay_ms(10); | |||
_delay_ms(5); // wait for response | |||
// No response(FF) when ok, FD when out of bound |