TX_SLOTS
u_char * sc_xmit_bufs[TX_SLOTS];
void * sc_xmit_stores[TX_SLOTS];
while (sc->sc_txpending == TX_SLOTS) {
sc->sc_txs %= TX_SLOTS;
for (i = 0; i < TX_SLOTS; ++i) {
for (i = 0; i < TX_SLOTS; ++i) {
if (sc->sc_txs < 0 || sc->sc_txs >= TX_SLOTS)