diff --git a/src/ca/syncgrp.c b/src/ca/syncgrp.c
index 56c593041..dba05137b 100644
--- a/src/ca/syncgrp.c
+++ b/src/ca/syncgrp.c
@@ -29,6 +29,9 @@
  *      Modification Log:
  *      -----------------
  * $Log$
+ * Revision 1.26  1997/08/04 23:37:18  jhill
+ * added beacon anomaly flag init/allow ip 255.255.255.255
+ *
  * Revision 1.24  1997/06/13 09:14:26  jhill
  * connect/search proto changes
  *
@@ -304,7 +307,7 @@ int epicsShareAPI ca_sg_block(const CA_SYNC_GID gid, ca_real timeout)
 			 */
 			tmo.tv_sec = 0L;
 			tmo.tv_usec = 0L;
-			cac_mux_io (&tmo);
+			cac_mux_io (&tmo, TRUE);
 			status = ECA_TIMEOUT;
 			break;
 		}
diff --git a/src/ca/vms_depen.c b/src/ca/vms_depen.c
index a95628b23..215ab177d 100644
--- a/src/ca/vms_depen.c
+++ b/src/ca/vms_depen.c
@@ -32,6 +32,9 @@
  * 	cjm 20-Nov-95 Add code for gettimeofday
  *
  * $Log$
+ * Revision 1.25  1998/06/16 00:43:12  jhill
+ * moved code to libCom
+ *
  * Revision 1.24  1998/04/13 19:14:35  jhill
  * fixed task variable problem
  *
@@ -136,7 +139,7 @@ int  gettimeofday(struct timeval *tp, struct timezone *tzp)
  */
 void cac_block_for_io_completion(struct timeval *pTV)
 {
-	cac_mux_io(pTV);
+	cac_mux_io(pTV, TRUE);
 }
 
 
@@ -169,7 +172,7 @@ void os_specific_sg_io_complete(CASG *pcasg)
  */
 void cac_block_for_sg_completion(CASG *pcasg, struct timeval *pTV)
 {
-	cac_mux_io(pTV);
+	cac_mux_io(pTV, TRUE);
 }
 
 
diff --git a/src/ca/vxWorks_depen.c b/src/ca/vxWorks_depen.c
index 7bbfc5395..07722f6f4 100644
--- a/src/ca/vxWorks_depen.c
+++ b/src/ca/vxWorks_depen.c
@@ -29,6 +29,9 @@
  *      Modification Log:
  *      -----------------
  * $Log$
+ * Revision 1.39  1998/09/24 21:22:55  jhill
+ * subtle changes related to efficency when checking connection timers
+ *
  * Revision 1.38  1998/06/16 00:56:03  jhill
  * moved code from here to libCom
  *
@@ -166,7 +169,7 @@ void cac_block_for_io_completion(struct timeval *pTV)
 	int		rate = sysClkRateGet();
 
 #ifdef NOASYNCRECV 
-	cac_mux_io(pTV);
+	cac_mux_io(pTV, TRUE);
 #else
 	/*
 	 * flush outputs
@@ -174,7 +177,7 @@ void cac_block_for_io_completion(struct timeval *pTV)
 	 */
 	itimeout.tv_usec = 0;
 	itimeout.tv_sec = 0;
-	cac_mux_io (&itimeout);
+	cac_mux_io (&itimeout, TRUE);
         
 	ticks = (int) (pTV->tv_sec*rate + (pTV->tv_usec*rate)/USEC_PER_SEC);
 	ticks = min(LOCALTICKS, ticks);
@@ -229,31 +232,31 @@ void os_specific_sg_io_complete(CASG   *pcasg)
  */
 void cac_block_for_sg_completion(CASG *pcasg, struct timeval *pTV)
 {
-        struct timeval  itimeout;
-	int		ticks;
-	int		rate = sysClkRateGet();
-
+    struct timeval  itimeout;
+    int             ticks;
+    int             rate = sysClkRateGet();
+    
 #ifdef NOASYNCRECV 
-	cac_mux_io(pTV);
+    cac_mux_io(pTV, TRUE);
 #else
-	/*
-	 * flush outputs
-	 * (recv occurs in another thread)
-	 */
-        itimeout.tv_usec = 0;
-        itimeout.tv_sec = 0;
-        cac_mux_io(&itimeout);
-        
-	ticks = (int) (pTV->tv_sec*rate + (pTV->tv_usec*rate)/USEC_PER_SEC);
-	ticks = min(LOCALTICKS, ticks);
-
-	semTake (pcasg->sem, ticks);
-	/*
-	 * force a time update because we are not
-	 * going to get one with a nill timeout in
-	 * ca_mux_io()
-	 */
-	cac_gettimeval (&ca_static->currentTime);
+    /*
+     * flush outputs
+     * (recv occurs in another thread)
+     */
+    itimeout.tv_usec = 0;
+    itimeout.tv_sec = 0;
+    cac_mux_io(&itimeout, TRUE);
+    
+    ticks = (int) (pTV->tv_sec*rate + (pTV->tv_usec*rate)/USEC_PER_SEC);
+    ticks = min(LOCALTICKS, ticks);
+    
+    semTake (pcasg->sem, ticks);
+    /*
+     * force a time update because we are not
+     * going to get one with a nill timeout in
+     * ca_mux_io()
+     */
+    cac_gettimeval (&ca_static->currentTime);
 #endif
 }