diff --git a/src/libCom/osi/os/WIN32/osdWireConfig.h b/src/libCom/osi/os/WIN32/osdWireConfig.h
new file mode 100644
index 000000000..913ff71a8
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdWireConfig.h
@@ -0,0 +1,16 @@
+//
+// WIN32 version of
+// osdWireConfig.h
+//
+//	Author Jeffrey O. Hill
+//	johill@lanl.gov
+//
+
+#ifndef osdWireConfig_h
+#define osdWireConfig_h
+
+// for now, assume that win32 runs only on generic little endian
+#define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
+#define EPICS_FLOAT_WORD_ORDER EPICS_BYTE_ORDER
+
+#endif // ifdef osdWireConfig_h
\ No newline at end of file
diff --git a/src/libCom/osi/os/default/osdWireConfig.h b/src/libCom/osi/os/default/osdWireConfig.h
new file mode 100644
index 000000000..a19b12c75
--- /dev/null
+++ b/src/libCom/osi/os/default/osdWireConfig.h
@@ -0,0 +1,58 @@
+//
+// Default version of osdWireConfig.h that might
+// work on UNIX like systems that define <sys/param.h>
+//
+//	Author Jeffrey O. Hill
+//	johill@lanl.gov
+//
+
+#ifndef osdWireConfig_h
+#define osdWireConfig_h
+
+// if compilation fails because this wasnt found then you may need to define an OS 
+// specific osdWireConfig.h
+#include <sys/param.h>
+
+#ifdef __BYTE_ORDER
+#   if __BYTE_ORDER == __LITTLE_ENDIAN
+#	    define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
+#   elif __BYTE_ORDER == __BIG_ENDIAN
+#	    define EPICS_BYTE_ORDER EPICS_ENDIAN_BIG
+#   else
+#       error EPICS hasn’t been ported to run on the <sys/param.h> specified __BYTE_ORDER 
+#   endif
+#else
+#   ifdef BYTE_ORDER
+#       if BYTE_ORDER == LITTLE_ENDIAN
+#	        define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
+#       elif BYTE_ORDER == BIG_ENDIAN
+#	        define EPICS_BYTE_ORDER EPICS_ENDIAN_BIG
+#       else
+#           error EPICS hasn’t been ported to run on the <sys/param.h> specified BYTE_ORDER 
+#       endif
+#   else
+#       error <sys/param.h> doesnt specify __BYTE_ORDER or BYTE_ORDER - is an OS specific osdWireConfig.h needed?
+#   endif
+#endif
+
+#ifdef __FLOAT_WORD_ORDER
+#   if __FLOAT_WORD_ORDER == __LITTLE_ENDIAN
+#	    define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_LITTLE
+#   elif __FLOAT_WORD_ORDER == __BIG_ENDIAN
+#	    define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_BIG
+#   else
+#       error EPICS hasn’t been ported to <sys/param.h> specified __FLOAT_WORD_ORDER
+#   endif
+#else
+#   if FLOAT_WORD_ORDER == LITTLE_ENDIAN
+#	    define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_LITTLE
+#   elif FLOAT_WORD_ORDER == BIG_ENDIAN
+#	    define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_BIG
+#   else
+        // make the assumption that if __FLOAT_WORD_ORDER and FLOAT_WORD_ORDER 
+        // arent defined then weird fp ordered archs like arm nwfp aren't supported
+#       define EPICS_FLOAT_WORD_ORDER EPICS_BYTE_ORDER
+#   endif
+#endif
+
+#endif // ifdef osdWireConfig_h
\ No newline at end of file