78 	VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local
95 	VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local
112 	register VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local
124 	register VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local
146 	register VOLATILE struct scc_reg *port;  local
183 	register VOLATILE struct scc_reg *port = scc->scc_port;  local
251 	register VOLATILE struct scc_reg *port = scc->scc_port;  local
281 	register VOLATILE struct scc_reg *port = scc->scc_port;  local
317 	register VOLATILE struct scc_reg *port = scc->scc_port;  local
359 	register VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local
370 	register VOLATILE struct scc_reg *port = sccsw[chan].scc_port;  local