364 /*       DCD/CTS and Rx/Tx errors					*/
441 	/* ABORT: generated whenever DCD drops while receiving */  in scc_exint()
446 	/* HUNT: software DCD; on = waiting for SYNC, off = receiving frame */  in scc_exint()
452 			scc->dcd = 0;  in scc_exint()
457 			scc->dcd = 1;  in scc_exint()
460 		scc_notify(scc, scc->dcd? HWEV_DCD_OFF:HWEV_DCD_ON);  in scc_exint()
463 	/* DCD: on = start to receive packet, off = ABORT condition */  in scc_exint()
466 	if((changes & DCD) && !scc->kiss.softdcd) /* DCD input changed state */  in scc_exint()
468 		if(status & DCD)                /* DCD is now ON */  in scc_exint()
471 			scc->dcd = 1;  in scc_exint()
472 		} else {                        /* DCD is now OFF */  in scc_exint()
475 			scc->dcd = 0;  in scc_exint()
478 		scc_notify(scc, scc->dcd? HWEV_DCD_ON:HWEV_DCD_OFF);  in scc_exint()
864 	if(scc->kiss.softdcd || (InReg(scc->ctrl,R0) & DCD))  in init_channel()
865 						/* DCD is now ON */  in init_channel()
870 	/* enable ABORT, DCD & SYNC/HUNT interrupts */  in init_channel()
925 			cl(scc, R15, DCDIE|SYNCIE);	/* No DCD changes, please */  in scc_key_trx()
1111 			if ( (grp1 & RXGROUP) && scc2->dcd )  in is_grouped()
1120  * fulldup == 0:  DCD is active or Rand > P-persistence: start t_busy timer
1145 		if (scc->dcd || (scc->kiss.persist) < Rand || (scc->kiss.group && is_grouped(scc)) )  in t_dwait()
1213  * throw away send buffers if DCD remains active too long.
1360 			scc_notify(scc, scc->dcd? HWEV_DCD_ON:HWEV_DCD_OFF);  in scc_set_param()
1874 				scc->kiss.softdcd = 0;		/* hardware dcd */  in scc_net_ioctl()
1886 				scc->kiss.softdcd = 0;		/* hardware dcd */  in scc_net_ioctl()