diff --git a/src/libCom/osi/os/WIN32/osdPoolStatus.c b/src/libCom/osi/os/WIN32/osdPoolStatus.c
new file mode 100644
index 000000000..59e410fbc
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdPoolStatus.c
@@ -0,0 +1,14 @@
+
+#define epicsExportSharedSymbols
+#include "osiPoolStatus.h"
+
+/*
+ * osiSufficentSpaceInPool ()
+ *
+ * @@@@@ not implemented @@@@@
+ *
+ */
+epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ()
+{
+    return 1;
+}
diff --git a/src/libCom/osi/os/WIN32/osdPoolStatus.h b/src/libCom/osi/os/WIN32/osdPoolStatus.h
new file mode 100644
index 000000000..b1a2a1ff2
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdPoolStatus.h
@@ -0,0 +1,5 @@
+
+#ifdef osdPoolStatush
+#define osdPoolStatush
+
+#endif /* osdPoolStatush */
\ No newline at end of file
diff --git a/src/libCom/osi/os/WIN32/osdSem.c b/src/libCom/osi/os/WIN32/osdSem.c
new file mode 100644
index 000000000..068888d57
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdSem.c
@@ -0,0 +1,49 @@
+/* osiSem.c */
+/*
+ *      $Id$
+ *      WIN32 version
+ *
+ *      Author  Jeffrey O. Hill
+ *              johill@lanl.gov
+ *              505 665 1831
+ *
+ *      Experimental Physics and Industrial Control System (EPICS)
+ *
+ *      Copyright 1991, the Regents of the University of California,
+ *      and the University of Chicago Board of Governors.
+ *
+ *      This software was produced under  U.S. Government contracts:
+ *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
+ *      and (W-31-109-ENG-38) at Argonne National Laboratory.
+ *
+ *      Initial development by:
+ *              The Controls and Automation Group (AT-8)
+ *              Ground Test Accelerator
+ *              Accelerator Technology Division
+ *              Los Alamos National Laboratory
+ *
+ *      Co-developed with
+ *              The Controls and Computing Group
+ *              Accelerator Systems Division
+ *              Advanced Photon Source
+ *              Argonne National Laboratory
+ */
+
+#define epicsExportSharedSymbols
+#include "shareLib.h"
+#include "osiSem.h"
+
+
+/*
+ * semBinaryShow ()
+ *
+ */
+epicsShareFunc void epicsShareAPI semBinaryShow (semId id) 
+{ }
+
+/*
+ * semMutexShow ()
+ *
+ */
+epicsShareFunc void epicsShareAPI semMutexShow (semId id) 
+{ }
diff --git a/src/libCom/osi/os/WIN32/osdSem.h b/src/libCom/osi/os/WIN32/osdSem.h
new file mode 100644
index 000000000..957fc2689
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdSem.h
@@ -0,0 +1,240 @@
+
+/* osiSem.c */
+/*
+ *      $Id$
+ *      WIN32 version
+ *
+ *      Author  Jeffrey O. Hill
+ *              johill@lanl.gov
+ *              505 665 1831
+ *
+ *      Experimental Physics and Industrial Control System (EPICS)
+ *
+ *      Copyright 1991, the Regents of the University of California,
+ *      and the University of Chicago Board of Governors.
+ *
+ *      This software was produced under  U.S. Government contracts:
+ *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
+ *      and (W-31-109-ENG-38) at Argonne National Laboratory.
+ *
+ *      Initial development by:
+ *              The Controls and Automation Group (AT-8)
+ *              Ground Test Accelerator
+ *              Accelerator Technology Division
+ *              Los Alamos National Laboratory
+ *
+ *      Co-developed with
+ *              The Controls and Computing Group
+ *              Accelerator Systems Division
+ *              Advanced Photon Source
+ *              Argonne National Laboratory
+ */
+
+#ifndef osdSemh
+#define osdSemh
+
+
+#ifndef VC_EXTRALEAN
+#   define VC_EXTRALEAN
+#endif
+#ifndef WIN32_LEAN_AND_MEAN 
+#   define WIN32_LEAN_AND_MEAN 
+#endif
+/* including less than this causes conflicts with winsock2.h :-( */
+#include <winsock2.h>
+
+#include "epicsAssert.h"
+#include "cantProceed.h"
+
+static const unsigned mSecPerSecOsdSem = 1000u;
+
+/*
+ * semBinaryCreate ()
+ */
+epicsShareFunc INLINE semId epicsShareAPI semBinaryCreate (int initialState) 
+{
+    HANDLE newEvent;
+
+    newEvent =  CreateEvent (NULL, FALSE, initialState?TRUE:FALSE, NULL);
+    return (semId) newEvent;
+}
+
+
+/*
+ * semBinaryDestroy ()
+ */
+epicsShareFunc INLINE void epicsShareAPI semBinaryDestroy (semId id) 
+{
+    HANDLE destroyee = (HANDLE) id;
+    BOOL success;
+    
+    success = CloseHandle (destroyee);
+    assert (success);
+}
+
+/*
+ * semBinaryGive ()
+ */
+epicsShareFunc INLINE void epicsShareAPI semBinaryGive (semId id) 
+{
+    HANDLE event = (HANDLE) id;
+    BOOL status;
+
+    status = SetEvent (event);
+    assert (status); 
+}
+
+/*
+ * semBinaryTake ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semBinaryTake (semId id) 
+{ 
+    HANDLE event = (HANDLE) id;
+    DWORD status;
+
+    status = WaitForSingleObject (event, INFINITE);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+/*
+ * semBinaryTakeTimeout ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semBinaryTakeTimeout (semId id, double timeOut)
+{ 
+    HANDLE event = (HANDLE) id;
+    DWORD status;
+    DWORD tmo;
+
+    tmo = (DWORD) (timeOut * mSecPerSecOsdSem);
+    status = WaitForSingleObject (event, tmo);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else if (status == WAIT_TIMEOUT) {
+        return semTakeTimeout;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+/*
+ * semBinaryTakeNoWait ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semBinaryTakeNoWait (semId id) 
+{ 
+    HANDLE mutex = (HANDLE) id;
+    DWORD status;
+
+    status = WaitForSingleObject (mutex, 0);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else if (status == WAIT_TIMEOUT) {
+        return semTakeTimeout;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+/*
+ * semMutexCreate ()
+ */
+epicsShareFunc INLINE semId epicsShareAPI semMutexCreate (void) 
+{
+    HANDLE newMutex;
+
+    newMutex = CreateMutex (NULL, FALSE, NULL);
+    return (semId) newMutex;
+}
+
+/*
+ * semMutexDestroy ()
+ */
+epicsShareFunc INLINE void epicsShareAPI semMutexDestroy (semId id) 
+{
+    HANDLE destroyee = (HANDLE) id;
+    BOOL success;
+    
+    success = CloseHandle (destroyee);
+    assert (success);
+}
+
+/*
+ * semMutexGive ()
+ */
+epicsShareFunc INLINE void epicsShareAPI semMutexGive (semId id) 
+{
+    HANDLE destroyee = (HANDLE) id;
+    BOOL success;
+    
+    success = ReleaseMutex (destroyee);
+    assert (success);
+}
+
+/*
+ * semMutexTake ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semMutexTake (semId id) 
+{
+    HANDLE mutex = (HANDLE) id;
+    DWORD status;
+
+    status = WaitForSingleObject (mutex, INFINITE);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+/*
+ * semMutexTakeTimeout ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semMutexTakeTimeout (semId id, double timeOut)
+{ 
+    HANDLE mutex = (HANDLE) id;
+    DWORD status;
+    DWORD tmo;
+
+    tmo = (DWORD) (timeOut * mSecPerSecOsdSem);
+    status = WaitForSingleObject (mutex, tmo);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else if (status == WAIT_TIMEOUT) {
+        return semTakeTimeout;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+/*
+ * semMutexTakeNoWait ()
+ */
+epicsShareFunc INLINE semTakeStatus epicsShareAPI semMutexTakeNoWait (semId id) 
+{ 
+    HANDLE mutex = (HANDLE) id;
+    DWORD status;
+
+    status = WaitForSingleObject (mutex, 0);
+    if ( status == WAIT_OBJECT_0 ) {
+        return semTakeOK;
+    }
+    else if (status == WAIT_TIMEOUT) {
+        return semTakeTimeout;
+    }
+    else {
+        return semTakeError;
+    }
+}
+
+#endif /* osdSemh */
\ No newline at end of file
diff --git a/src/libCom/osi/os/WIN32/osdSigPipeIgnore.c b/src/libCom/osi/os/WIN32/osdSigPipeIgnore.c
new file mode 100644
index 000000000..691355db7
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdSigPipeIgnore.c
@@ -0,0 +1,11 @@
+
+#define epicsExportSharedSymbols
+#include "osiSigPipeIgnore.h"
+
+/*
+ * NOOP
+ */
+epicsShareFunc void epicsShareAPI installSigPipeIgnore (void)
+{
+}
+ 
diff --git a/src/libCom/osi/os/WIN32/osdSigPipeIgnore.h b/src/libCom/osi/os/WIN32/osdSigPipeIgnore.h
new file mode 100644
index 000000000..27370f0e3
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdSigPipeIgnore.h
@@ -0,0 +1,5 @@
+
+#ifndef osdSigPipeIgnoreh
+#define osdSigPipeIgnoreh
+
+#endif /* osdSigPipeIgnoreh */
\ No newline at end of file
diff --git a/src/libCom/osi/os/WIN32/osdThread.c b/src/libCom/osi/os/WIN32/osdThread.c
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/libCom/osi/os/WIN32/osdThread.h b/src/libCom/osi/os/WIN32/osdThread.h
new file mode 100644
index 000000000..3a66d797f
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdThread.h
@@ -0,0 +1,57 @@
+
+#ifndef osdThreadh
+#define osdThreadh
+
+#include <assert.h>
+
+#ifndef VC_EXTRALEAN
+#   define VC_EXTRALEAN
+#endif
+#ifndef WIN32_LEAN_AND_MEAN 
+#   define WIN32_LEAN_AND_MEAN 
+#endif
+/* including less than this causes conflicts with winsock2.h :-( */
+#include <winsock2.h>
+
+struct osdThreadPrivate 
+{
+#ifdef __cpluplus
+    osdThreadPrivate ();
+    ~osdThreadPrivate ();
+#endif
+    DWORD key;
+};
+
+#ifdef __cpluplus
+
+template <class T>
+inline T *osiThreadPrivate<T>::get ()
+{
+    return static_cast<T *> (TlsGetValue (this->key));
+}
+
+template <class T>
+inline void osiThreadPrivate<T>::set (T *pIn)
+{
+    BOOL stat = TlsSetValue (this->key, static_cast<void *> (pIn) );
+    assert (stat);
+}
+
+#else /* ifdef __cplusplus */
+
+epicsShareFunc INLINE void epicsShareAPI threadPrivateSet (threadVarId id, void *pVal)
+{
+    struct osdThreadPrivate *pPvt = (struct osdThreadPrivate *) id;
+    BOOL stat = TlsSetValue (pPvt->key, (void *) pVal );
+    assert (stat);
+}
+
+epicsShareFunc INLINE void * epicsShareAPI threadPrivateGet (threadVarId id)
+{
+    struct osdThreadPrivate *pPvt = (struct osdThreadPrivate *) id;
+    return (void *) TlsGetValue (pPvt->key);
+}
+
+#endif /* ifdef/else __cplusplus */
+
+#endif /* osdThreadh */
diff --git a/src/libCom/osi/os/WIN32/osdThreadPrivate.h b/src/libCom/osi/os/WIN32/osdThreadPrivate.h
new file mode 100644
index 000000000..fc9b70f09
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdThreadPrivate.h
@@ -0,0 +1,12 @@
+
+#include <assert.h>
+
+#include <windows.h>
+
+
+
+#ifdef __cplusplus
+
+
+
+#endif /* __cplusplus */
\ No newline at end of file
diff --git a/src/libCom/osi/os/vxWorks/osdAssert.c b/src/libCom/osi/os/vxWorks/osdAssert.c
new file mode 100644
index 000000000..ed976d736
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdAssert.c
@@ -0,0 +1,86 @@
+/* $Id$
+ * assertVX.c
+ *      Author:         Jeff Hill
+ *      Date:           02-27-95 
+ *
+ *      Experimental Physics and Industrial Control System (EPICS)
+ *
+ *      Copyright 1991, the Regents of the University of California,
+ *      and the University of Chicago Board of Governors.
+ *
+ *      This software was produced under  U.S. Government contracts:
+ *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
+ *      and (W-31-109-ENG-38) at Argonne National Laboratory.
+ *
+ *      Initial development by:
+ *              The Controls and Automation Group (AT-8)
+ *              Ground Test Accelerator
+ *              Accelerator Technology Division
+ *              Los Alamos National Laboratory
+ *
+ *      Co-developed with
+ *              The Controls and Computing Group
+ *              Accelerator Systems Division
+ *              Advanced Photon Source
+ *              Argonne National Laboratory
+ *
+ *
+ ***************************************************************************
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+#define epicsExportSharedSymbols
+#include "osiThread.h"
+#include "epicsPrint.h"
+#include "epicsVersion.h"
+#include "epicsAssert.h"
+
+/*
+ * epicsAssert ()
+ *
+ * This forces assert failures into the log file and then
+ * calls threadSuspend() instead of exit() so that we can debug
+ * the problem.
+ */
+epicsShareFunc void epicsShareAPI epicsAssert (const char *pFile, const unsigned line, const char *pExp,
+	const char *pAuthorName)
+{
+    threadId threadid = threadGetIdSelf();
+
+    epicsPrintf (	
+"\n\n\n%s: A call to \"assert (%s)\" failed in %s at %d\n", 
+		threadGetName (threadid),
+		pExp, 
+		pFile, 
+		line);
+
+	if (pAuthorName) {
+
+        	epicsPrintf (	
+"Please send a copy of the output from \"tt (%p)\" and a copy of this message\n",
+		threadid);
+
+        	epicsPrintf (	
+"to \"%s\" (the author of this call to assert()) or \"tech-talk@aps.anl.gov\"\n", 
+		pAuthorName);
+
+	}
+	else {
+
+        	epicsPrintf (	
+"Please send a copy of the output from \"tt (%p)\" and a copy of this message\n",
+		threadid);
+
+        	epicsPrintf (	
+"to the author or \"tech-talk@aps.anl.gov\"\n");
+
+	}
+	epicsPrintf ("This problem occurred in \"%s\"\n", epicsReleaseVersion);
+
+    threadSuspend (threadid);
+}
+
diff --git a/src/libCom/osi/os/vxWorks/osdFindGlobalSymbol.c b/src/libCom/osi/os/vxWorks/osdFindGlobalSymbol.c
new file mode 100644
index 000000000..f4cd60377
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdFindGlobalSymbol.c
@@ -0,0 +1,33 @@
+/* osi/os/vxWorks/osiFindGlobalSymbol */
+
+#include <vxWorks.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <symLib.h>
+#include <sysSymTbl.h>
+
+#include "dbmf.h"
+#include "osiFindGlobalSymbol.h"
+void *osiFindGlobalSymbol(const char *name)
+{
+    STATUS status;
+    SYM_TYPE type;
+    char *pvalue;
+    
+    status = symFindByName( sysSymTbl, (char *)name, &pvalue, &type );
+    if(status) {
+        if(name[0] == '_' ) {
+            status = symFindByName(sysSymTbl, (char *)(name+1), &pvalue, &type);
+        } else {
+            char *pname;
+            pname = dbmfMalloc(strlen(name) + 2);
+            strcpy(pname,"_");
+            strcat(pname,name);
+            status = symFindByName(sysSymTbl,pname, &pvalue, &type);
+            dbmfFree(pname);
+        }
+    }
+    if(status) return(0);
+    return((void *)pvalue);
+}
diff --git a/src/libCom/osi/os/vxWorks/osdInterrupt.c b/src/libCom/osi/os/vxWorks/osdInterrupt.c
new file mode 100644
index 000000000..8a7132dc8
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdInterrupt.c
@@ -0,0 +1,16 @@
+/* osi/os/vxWorks/osiInterrupt.c */
+
+/* Author:  Marty Kraimer Date:    25AUG99 */
+
+/********************COPYRIGHT NOTIFICATION**********************************
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+****************************************************************************/
+
+/* Entire implementation is in header file */
+
+static void dummy()
+{
+}
+
diff --git a/src/libCom/osi/os/vxWorks/osdInterrupt.h b/src/libCom/osi/os/vxWorks/osdInterrupt.h
new file mode 100644
index 000000000..b92efba85
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdInterrupt.h
@@ -0,0 +1,10 @@
+#include <vxWorks.h>
+#include <intLib.h>
+#include <logLib.h>
+
+
+#define interruptLock intLock
+#define interruptUnlock intUnlock
+#define interruptIsInterruptContext intContext
+#define interruptContextMessage(MESSAGE) \
+    (logMsg((char *)(MESSAGE),0,0,0,0,0,0))
diff --git a/src/libCom/osi/os/vxWorks/osdPoolStatus.c b/src/libCom/osi/os/vxWorks/osdPoolStatus.c
new file mode 100644
index 000000000..59e410fbc
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdPoolStatus.c
@@ -0,0 +1,14 @@
+
+#define epicsExportSharedSymbols
+#include "osiPoolStatus.h"
+
+/*
+ * osiSufficentSpaceInPool ()
+ *
+ * @@@@@ not implemented @@@@@
+ *
+ */
+epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ()
+{
+    return 1;
+}
diff --git a/src/libCom/osi/os/vxWorks/osdRing.c b/src/libCom/osi/os/vxWorks/osdRing.c
new file mode 100644
index 000000000..3ecd1acbb
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdRing.c
@@ -0,0 +1,14 @@
+/* osiRing.c */
+
+/* Author:  Marty Kraimer Date:    09SEP99 */
+
+/********************COPYRIGHT NOTIFICATION**********************************
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+****************************************************************************/
+
+/* Entire implementation is in header file */
+
+static void dummy()
+{ }
diff --git a/src/libCom/osi/os/vxWorks/osdRing.h b/src/libCom/osi/os/vxWorks/osdRing.h
new file mode 100644
index 000000000..da85f4e1a
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdRing.h
@@ -0,0 +1,20 @@
+#ifndef osiRingh
+#define osiRingh
+
+#include <vxWorks.h>
+#include <rngLib.h>
+
+#define ringId RING_ID
+
+#define ringCreate rngCreate
+#define ringDelete rngDelete
+#define ringGet rngBufGet
+#define ringPut rngBufPut
+#define ringFlush rngFlush
+#define ringFreeBytes rngFreeBytes
+#define ringUsedBytes rngNBytes
+#define ringSize(ID) (rngFreeBytes((ID)) + rngNBytes((ID)))
+#define ringIsEmpty rngIsEmpty
+#define ringIsFull rngIsFull
+
+#endif /* osiRingh */
diff --git a/src/libCom/osi/os/vxWorks/osdSem.c b/src/libCom/osi/os/vxWorks/osdSem.c
new file mode 100644
index 000000000..08767c180
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdSem.c
@@ -0,0 +1,29 @@
+/* os/vxWorks/osiSem.c */
+
+/* Author:  Marty Kraimer Date:    25AUG99 */
+
+/********************COPYRIGHT NOTIFICATION**********************************
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+****************************************************************************/
+
+#include "osiSem.h"
+#include "cantProceed.h"
+
+
+semBinaryId semBinaryMustCreate(int initialState)
+{
+    semBinaryId id;
+    id = semBinaryCreate(initialState);
+    if(!id) cantProceed("semBinaryMustCreate");
+    return(id);
+}
+
+semMutexId semMutexMustCreate(void)
+{
+    semMutexId id;
+    id = semMutexCreate();
+    if(!id) cantProceed("semMutexMustCreate");
+    return(id);
+}
diff --git a/src/libCom/osi/os/vxWorks/osdSem.h b/src/libCom/osi/os/vxWorks/osdSem.h
new file mode 100644
index 000000000..633d7257f
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdSem.h
@@ -0,0 +1,53 @@
+#ifndef osiSemh
+#define osiSemh
+
+#include <vxWorks.h>
+#include <semLib.h>
+#include <time.h>
+#include <objLib.h>
+#include <sysLib.h>
+
+#include "epicsAssert.h"
+
+#define semBinaryId SEM_ID
+#define semMutexId SEM_ID
+#define semEmpty SEM_EMPTY
+#define semFull SEM_FULL
+
+typedef enum {semTakeOK,semTakeTimeout,semTakeError} semTakeStatus;
+
+#define semBinaryCreate(IS) semBCreate(SEM_Q_FIFO,(IS))
+semBinaryId semBinaryMustCreate(int initialState);
+#define semBinaryDestroy semDelete
+#define semBinaryGive semGive
+#define semBinaryTake(ID) \
+    ((semTake((ID),WAIT_FOREVER)==OK ? semTakeOK : semTakeError))
+#define semBinaryMustTake(ID) \
+    assert(semTake((ID),WAIT_FOREVER)==OK)
+#define semBinaryTakeTimeout(ID,TIMEOUT) \
+    ((semTake((ID),((int)((TIMEOUT)*sysClkRateGet())))==OK ? semTakeOK \
+    : (errno==S_objLib_OBJ_TIMEOUT ? semTakeTimeout : semTakeError)))
+#define semBinaryTakeNoWait(ID) \
+    ((semTake((ID),NO_WAIT)==OK ? semTakeOK \
+    : (errno==S_objLib_OBJ_UNAVAILABLE ? semTakeTimeout : semTakeError)))
+
+#define semBinaryShow(ID) semShow((ID),1)
+
+#define semMutexCreate() \
+    semMCreate(SEM_DELETE_SAFE|SEM_INVERSION_SAFE|SEM_Q_PRIORITY)
+semMutexId semMutexMustCreate();
+#define semMutexDestroy semDelete
+#define semMutexGive semGive
+#define semMutexTake(ID) \
+    ((semTake((ID),WAIT_FOREVER)==OK ? semTakeOK : semTakeError))
+#define semMutexMustTake(ID) \
+    assert(semTake((ID),WAIT_FOREVER)==OK)
+#define semMutexTakeTimeout(ID,TIMEOUT) \
+    ((semTake((ID),((int)((TIMEOUT)*sysClkRateGet())))==OK ? semTakeOK \
+    : (errno==S_objLib_OBJ_TIMEOUT ? semTakeTimeout : semTakeError)))
+#define semMutexTakeNoWait(ID) \
+    ((semTake((ID),NO_WAIT)==OK ? semTakeOK \
+    : (errno==S_objLib_OBJ_UNAVAILABLE ? semTakeTimeout : semTakeError)))
+#define semMutexShow(ID) semShow((ID),1)
+
+#endif /*osiSemh*/
diff --git a/src/libCom/osi/os/vxWorks/osdSigPipeIgnore.c b/src/libCom/osi/os/vxWorks/osdSigPipeIgnore.c
new file mode 100644
index 000000000..691355db7
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdSigPipeIgnore.c
@@ -0,0 +1,11 @@
+
+#define epicsExportSharedSymbols
+#include "osiSigPipeIgnore.h"
+
+/*
+ * NOOP
+ */
+epicsShareFunc void epicsShareAPI installSigPipeIgnore (void)
+{
+}
+ 
diff --git a/src/libCom/osi/os/vxWorks/osdThread.c b/src/libCom/osi/os/vxWorks/osdThread.c
new file mode 100644
index 000000000..f92329db7
--- /dev/null
+++ b/src/libCom/osi/os/vxWorks/osdThread.c
@@ -0,0 +1,158 @@
+/* osi/os/vxWorks/osiThread.c */
+
+/* Author:  Marty Kraimer Date:    25AUG99 */
+
+/********************COPYRIGHT NOTIFICATION**********************************
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+****************************************************************************/
+
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include <vxWorks.h>
+#include <taskLib.h>
+#include <sysLib.h>
+
+#include "errlog.h"
+#include "ellLib.h"
+#include "osiThread.h"
+#include "cantProceed.h"
+
+/* Just map osi 0 to 99 into vx 100 to 199 */
+/* remember that for vxWorks lower number means higher priority */
+/* vx = 100 + (99 -osi)  = 199 - osi*/
+/* osi =  199 - vx */
+
+static unsigned int getOsiPriorityValue(int ossPriority)
+{
+    return(199-ossPriority);
+}
+
+static int getOssPriorityValue(unsigned int osiPriority)
+{
+    return(199 - osiPriority);
+}
+
+
+#if CPU_FAMILY == MC680X0
+#define ARCH_STACK_FACTOR 1
+#elif CPU_FAMILY == SPARC
+#define ARCH_STACK_FACTOR 2
+#else
+#define ARCH_STACK_FACTOR 2
+#endif
+
+/*
+ * threadGetStackSize ()
+ */
+epicsShareFunc unsigned int epicsShareAPI threadGetStackSize (threadStackSizeClass stackSizeClass) 
+{
+    static const unsigned stackSizeTable[threadStackBig+1] = 
+        {4000*ARCH_STACK_FACTOR, 6000*ARCH_STACK_FACTOR, 11000*ARCH_STACK_FACTOR};
+
+    if (stackSizeClass<threadStackSmall) {
+        errlogPrintf("threadGetStackSize illegal argument (too small)");
+        return stackSizeTable[threadStackBig];
+    }
+
+    if (stackSizeClass>threadStackBig) {
+        errlogPrintf("threadGetStackSize illegal argument (too large)");
+        return stackSizeTable[threadStackBig];
+    }
+
+    return stackSizeTable[stackSizeClass];
+}
+
+
+threadId threadCreate(const char *name,
+    unsigned int priority, unsigned int stackSize,
+    THREADFUNC funptr,void *parm)
+{
+    int tid;
+    if(stackSize<100) {
+        errlogPrintf("threadCreate %s illegal stackSize %d\n",name,stackSize);
+        return(0);
+    }
+    tid = taskSpawn((char *)name,getOssPriorityValue(priority),
+        VX_FP_TASK, stackSize, (FUNCPTR)funptr,(int)parm,0,0,0,0,0,0,0,0,0);
+    if(tid==0) {
+        errlogPrintf("threadCreate taskSpawn failure for %s\n",name);
+        return(0);
+    }
+    return((threadId)tid);
+}
+
+void threadSuspend(threadId id)
+{
+    int tid = (int)id;
+    STATUS status;
+
+    status = taskSuspend(tid);
+    if(status) errlogPrintf("threadSuspend failed\n");
+}
+
+void threadResume(threadId id)
+{
+    int tid = (int)id;
+    STATUS status;
+
+    status = taskResume(tid);
+    if(status) errlogPrintf("threadResume failed\n");
+}
+
+unsigned int threadGetPriority(threadId id)
+{
+    int tid = (int)id;
+    STATUS status;
+    int priority = 0;
+
+    status = taskPriorityGet(tid,&priority);
+    if(status) errlogPrintf("threadGetPriority failed\n");
+    return(getOsiPriorityValue(priority));
+}
+
+void threadSetPriority(threadId id,unsigned int osip)
+{
+    int tid = (int)id;
+    STATUS status;
+    int priority = 0;
+
+    priority = getOssPriorityValue(osip);
+    status = taskPrioritySet(tid,priority);
+    if(status) errlogPrintf("threadSetPriority failed\n");
+}
+
+int threadIsEqual(threadId id1, threadId id2)
+{
+    return((id1==id2) ? 1 : 0);
+}
+
+int threadIsReady(threadId id)
+{
+    int tid = (int)id;
+    return((int)taskIsReady(tid));
+}
+
+int threadIsSuspended(threadId id)
+{
+    int tid = (int)id;
+    return((int)taskIsSuspended(tid));
+}
+
+void threadSleep(double seconds)
+{
+    STATUS status;
+
+    status = taskDelay((int)(seconds*sysClkRateGet()));
+    if(status) errlogPrintf(0,"threadSleep\n");
+}
+
+threadId threadGetIdSelf(void)
+{
+    return((threadId)taskIdSelf());
+}