SK_TXF1_CTL      2586 dev/pci/if_sk.c 		SK_IF_WRITE_4(sc_if, 0, SK_TXF1_CTL, SK_FIFO_UNRESET);
SK_TXF1_CTL      2588 dev/pci/if_sk.c 		SK_IF_WRITE_4(sc_if, 0, SK_TXF1_CTL, SK_FIFO_ON);