Roflin
5f60c011cb
RX_RSR_CHK returned to IDLE when RSR==0 without clearing Sn_IR. SEND_OK (bit 4) fires after every successful transmit and the RX path only ever cleared RECV (bit 2), so INT_N stayed asserted; because IDLE tests ~w5100_int_n BEFORE tx_valid, the FSM span IDLE->RX_CHECK->RX_RSR_CHK->IDLE and TX was starved permanently. Observed on hardware as the first frame transmitting and every later one never setting TI while RX kept working. Now clears every Sn_IR bit except RECV, so a frame arriving between the RSR read and the write still raises INT_N and is served next pass. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>