tx_used_start    1146 dev/ic/acx.c   	idx = bd->tx_used_start;
tx_used_start    1197 dev/ic/acx.c   	bd->tx_used_start = idx;
tx_used_start    2080 dev/ic/acx.c   	bd->tx_used_start = 0;
tx_used_start     278 dev/ic/acxvar.h 	int			tx_used_start;