read_tcvr_bit2
(void) read_tcvr_bit2(bp, tregs);
(void) read_tcvr_bit2(bp, tregs);
tmp = read_tcvr_bit2(bp, tregs);
(void) read_tcvr_bit2(bp, tregs);
(void) read_tcvr_bit2(bp, tregs);
(void) read_tcvr_bit2(bp, tregs);