A_TXRDY
(KBD->ac_cs & A_TXRDY) != 0) {
for (timeout = 100; (KBD->ac_cs & A_TXRDY) == 0; timeout--)
if ((KBD->ac_cs & A_TXRDY) == 0)
if ((KBD->ac_cs & A_TXRDY) != 0) {