Lines Matching refs:tx_ring_in
185 tx_ring_in: .byte 0 label
222 mov tx_ring_in, a
484 subb a, tx_ring_in ; out-1-in = 255 - (in-out)
489 mov a, tx_ring_in
810 mov dpl1, tx_ring_in
814 inc dpl1 ; target = tx_ring_in+1
820 inc tx_ring_in ; tx_ring_in++
851 ;; tx_ring_in, tx_ring_out, rx_ring_in, rx_ring_out
864 mov a, tx_ring_in
931 mov a, tx_ring_in
954 subb a, tx_ring_in
1171 ;; tx_ring_in+1 is where the next input byte will go
1173 ;; if tx_ring_in == tx_ring_out, theres no work to do
1174 ;; there are (tx_ring_in - tx_ring_out) chars to be written
1176 ;; cannot inc if tx_ring_in+1 == tx_ring_out
1177 ;; write [tx_ring_in+1] then tx_ring_in++
1178 ;; if (tx_ring_in+1 == tx_ring_out), overflow
1179 ;; else tx_ring_in++