diff --git a/src/BCDConverter.cc b/src/BCDConverter.cc
index 1c51b8b..99c4ef5 100644
--- a/src/BCDConverter.cc
+++ b/src/BCDConverter.cc
@@ -31,9 +31,9 @@ class BCDConverter : public StreamFormatConverter
 };
 
 int BCDConverter::
-parse(const StreamFormat&, StreamBuffer&, const char*&, bool)
+parse(const StreamFormat& fmt, StreamBuffer&, const char*&, bool)
 {
-    return long_format;
+    return (fmt.flags & sign_flag) ? signed_format : unsigned_format;
 }
 
 bool BCDConverter::
diff --git a/src/BinaryConverter.cc b/src/BinaryConverter.cc
index 7645ce9..188ee6f 100644
--- a/src/BinaryConverter.cc
+++ b/src/BinaryConverter.cc
@@ -19,6 +19,7 @@
 ***************************************************************/
 
 #include <ctype.h>
+#include <limits.h>
 #include "StreamFormatConverter.h"
 #include "StreamError.h"
 
@@ -32,51 +33,59 @@ class BinaryConverter : public StreamFormatConverter
 };
 
 int BinaryConverter::
-parse(const StreamFormat& format, StreamBuffer& info,
+parse(const StreamFormat& fmt, StreamBuffer& info,
     const char*& source, bool)
 {
-    if (format.conv == 'B')
+    if (fmt.conv == 'b')
     {
-        // user defined characters for %B (next 2 in source)
+        // default characters 0 and 1 for %b
+        info.append("01");
+        return unsigned_format;
+    }
+    
+    // user defined characters for %B (next 2 in source)
+    if (*source)
+    {
+        if (*source == esc) source++;
+        info.append(*source++);
         if (*source)
         {
             if (*source == esc) source++;
             info.append(*source++);
-            if (*source)
-            {
-                if (*source == esc) source++;
-                info.append(*source++);
-                return long_format;
-            }
+            return unsigned_format;
         }
-        error("Missing characters after %%B format conversion\n");
-        return false;
     }
-    // default characters for %b
-    info.append("01");
-    return long_format;
+    error("Missing characters after %%B format conversion\n");
+    return false;
 }
 
 bool BinaryConverter::
-printLong(const StreamFormat& format, StreamBuffer& output, long value)
+printLong(const StreamFormat& fmt, StreamBuffer& output, long value)
 {
-    int prec = format.prec;
+    int prec = fmt.prec;
     if (prec == -1)
     {
-        // find number of significant bits
-        prec = sizeof (value) * 8;
-        while (prec && (value & (1L << (prec - 1))) == 0) prec--;
+        // Find number of significant bits is nothing is specified.
+        unsigned long x = (unsigned long) value;
+        prec = 32;
+#if (LONG_BIT > 32)
+        if (x > 0xFFFFFFFF)  { prec = 64;  x >>=32; }
+#endif 
+        if (x <= 0x0000FFFF) { prec -= 16; x <<=16; }
+        if (x <= 0x00FFFFFF) { prec -= 8; x <<=8; }
+        if (x <= 0x0FFFFFFF) { prec -= 4; x <<=4; }
+        if (x <= 0x3FFFFFFF) { prec -= 2; x <<=2; }
+        if (x <= 0x7FFFFFFF) { prec -= 1; }
     }
-    if (prec == 0) prec++; // print at least one bit
     int width = prec;
-    if (format.width > width) width = format.width;
-    char zero = format.info[0];
-    char one = format.info[1];
-    char fill = (format.flags & zero_flag) ? zero : ' ';
-    if (format.flags & alt_flag)
+    if (fmt.width > width) width = fmt.width;
+    char zero = fmt.info[0];
+    char one = fmt.info[1];
+    char fill = (fmt.flags & zero_flag) ? zero : ' ';
+    if (fmt.flags & alt_flag)
     {
         // little endian (least significant bit first)
-        if (!(format.flags & left_flag))
+        if (!(fmt.flags & left_flag))
         {
             // pad left
             while (width > prec)
@@ -100,7 +109,7 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
     else
     {
         // big endian (most significant bit first)
-        if (!(format.flags & left_flag))
+        if (!(fmt.flags & left_flag))
         {
             // pad left
             while (width > prec)
@@ -124,18 +133,18 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
 }
 
 int BinaryConverter::
-scanLong(const StreamFormat& format, const char* input, long& value)
+scanLong(const StreamFormat& fmt, const char* input, long& value)
 {
     long val = 0;
-    int width = format.width;
+    int width = fmt.width;
     if (width == 0) width = -1;
     int length = 0;
-    char zero = format.info[0];
-    char one = format.info[1];
+    char zero = fmt.info[0];
+    char one = fmt.info[1];
     if (!isspace(zero) && !isspace(one))
         while (isspace(input[length])) length++; // skip whitespaces
     if (input[length] != zero && input[length] != one) return -1;
-    if (format.flags & alt_flag)
+    if (fmt.flags & alt_flag)
     {
         // little endian (least significan bit first)
         long mask = 1;
diff --git a/src/RawConverter.cc b/src/RawConverter.cc
index 0eda514..f89abcb 100644
--- a/src/RawConverter.cc
+++ b/src/RawConverter.cc
@@ -31,23 +31,23 @@ class RawConverter : public StreamFormatConverter
 };
 
 int RawConverter::
-parse(const StreamFormat&, StreamBuffer&,
+parse(const StreamFormat& fmt, StreamBuffer&,
     const char*&, bool)
 {
-    return long_format;
+    return (fmt.flags & (sign_flag|zero_flag)) ? signed_format : unsigned_format;
 }
 
 bool RawConverter::
-printLong(const StreamFormat& format, StreamBuffer& output, long value)
+printLong(const StreamFormat& fmt, StreamBuffer& output, long value)
 {
-    int prec = format.prec;      // number of bytes from value
+    int prec = fmt.prec;      // number of bytes from value
     if (prec == -1) prec = 1;    // default: 1 byte
     int width = prec;            // number of bytes in output
     if (prec > (int)sizeof(long)) prec=sizeof(long);
-    if (format.width > width) width = format.width;
+    if (fmt.width > width) width = fmt.width;
     
     char byte = 0;
-    if (format.flags & alt_flag) // little endian (lsb first)
+    if (fmt.flags & alt_flag) // little endian (lsb first)
     {
         while (prec--)
         {
@@ -56,7 +56,7 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
             value >>= 8;
             width--;
         }
-        if (format.flags & zero_flag)
+        if (fmt.flags & zero_flag)
         {
             // fill with zero
             byte = 0;
@@ -73,7 +73,7 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
     }
     else // big endian (msb first)
     {
-        if (format.flags & zero_flag)
+        if (fmt.flags & zero_flag)
         {
             // fill with zero
             byte = 0;
@@ -97,17 +97,17 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
 }
 
 int RawConverter::
-scanLong(const StreamFormat& format, const char* input, long& value)
+scanLong(const StreamFormat& fmt, const char* input, long& value)
 {
     long length = 0;
     long val = 0;
-    int width = format.width;
+    int width = fmt.width;
     if (width == 0) width = 1; // default: 1 byte
-    if (format.flags & skip_flag)
+    if (fmt.flags & skip_flag)
     {
         return width; // just skip input
     }
-    if (format.flags & alt_flag)
+    if (fmt.flags & alt_flag)
     {
         // little endian (lsb first)
         unsigned int shift = 0;
@@ -118,7 +118,7 @@ scanLong(const StreamFormat& format, const char* input, long& value)
         }
         if (width == 0)
         {
-            if (format.flags & zero_flag)
+            if (fmt.flags & zero_flag)
             {
                 // fill with zero
                 val |= ((unsigned char) input[length++]) << shift;
@@ -134,7 +134,7 @@ scanLong(const StreamFormat& format, const char* input, long& value)
     else
     {
         // big endian  (msb first)
-        if (format.flags & zero_flag)
+        if (fmt.flags & zero_flag)
         {
             // fill with zero
             val = (unsigned char) input[length++];
diff --git a/src/StreamCore.cc b/src/StreamCore.cc
index ac8db8b..19da960 100644
--- a/src/StreamCore.cc
+++ b/src/StreamCore.cc
@@ -749,7 +749,7 @@ printSeparator()
 bool StreamCore::
 printValue(const StreamFormat& fmt, long value)
 {
-    if (fmt.type != long_format && fmt.type != enum_format)
+    if (fmt.type != unsigned_format && fmt.type != signed_format && fmt.type != enum_format)
     {
         error("%s: printValue(long) called with %%%c format\n",
             name(), fmt.conv);
@@ -1216,7 +1216,8 @@ normal_format:
                     double ddummy;
                     switch (fmt.type)
                     {
-                        case long_format:
+                        case unsigned_format:
+                        case signed_format:
                         case enum_format:
                             consumed = StreamFormatConverter::find(fmt.conv)->
                                 scanLong(fmt, inputLine(consumedInput), ldummy);
@@ -1457,7 +1458,7 @@ matchSeparator()
 long StreamCore::
 scanValue(const StreamFormat& fmt, long& value)
 {
-    if (fmt.type != long_format && fmt.type != enum_format)
+    if (fmt.type != unsigned_format && fmt.type != signed_format && fmt.type != enum_format)
     {
         error("%s: scanValue(long&) called with %%%c format\n",
             name(), fmt.conv);
diff --git a/src/StreamEpics.cc b/src/StreamEpics.cc
index e874f49..7b45a4e 100644
--- a/src/StreamEpics.cc
+++ b/src/StreamEpics.cc
@@ -751,21 +751,16 @@ process()
 bool Stream::
 print(format_t *format, va_list ap)
 {
-    long lval;
-    double dval;
-    char* sval;
     switch (format->type)
     {
-        case DBF_ENUM:
+        case DBF_ULONG:
         case DBF_LONG:
-            lval = va_arg(ap, long);
-            return printValue(*format->priv, lval);
+        case DBF_ENUM:
+            return printValue(*format->priv, va_arg(ap, long));
         case DBF_DOUBLE:
-            dval = va_arg(ap, double);
-            return printValue(*format->priv, dval);
+            return printValue(*format->priv, va_arg(ap, double));
         case DBF_STRING:
-            sval = va_arg(ap, char*);
-            return printValue(*format->priv, sval);
+            return printValue(*format->priv, va_arg(ap, char*));
     }
     error("INTERNAL ERROR (%s): Illegal format type\n", name());
     return false;
@@ -775,27 +770,22 @@ bool Stream::
 scan(format_t *format, void* value, size_t maxStringSize)
 {
     // called by streamScanfN
-    long* lptr;
-    double* dptr;
-    char* sptr;
 
     // first remove old value from inputLine (if we are scanning arrays)
     consumedInput += currentValueLength;
     currentValueLength = 0;
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         case DBF_ENUM:
-            lptr = (long*)value;
-            currentValueLength = scanValue(*format->priv, *lptr);
+            currentValueLength = scanValue(*format->priv, *(long*)value);
             break;
         case DBF_DOUBLE:
-            dptr = (double*)value;
-            currentValueLength = scanValue(*format->priv, *dptr);
+            currentValueLength = scanValue(*format->priv, *(double*)value);
             break;
         case DBF_STRING:
-            sptr = (char*)value;
-            currentValueLength  = scanValue(*format->priv, sptr,
+            currentValueLength  = scanValue(*format->priv, (char*)value,
                 maxStringSize);
             break;
         default:
@@ -979,9 +969,9 @@ getFieldAddress(const char* fieldname, StreamBuffer& address)
 }
 
 static const unsigned char dbfMapping[] =
-    {0, DBF_LONG, DBF_ENUM, DBF_DOUBLE, DBF_STRING};
+    {0, DBF_ULONG, DBF_LONG, DBF_ENUM, DBF_DOUBLE, DBF_STRING};
 static const short typeSize[] =
-    {0, sizeof(epicsInt32), sizeof(epicsUInt16),
+    {0, sizeof(epicsUInt32), sizeof(epicsInt32), sizeof(epicsUInt16),
         sizeof(epicsFloat64), MAX_STRING_SIZE};
 
 bool Stream::
@@ -1079,7 +1069,12 @@ formatValue(const StreamFormat& format, const void* fieldaddress)
                         (long)((epicsUInt16*)buffer)[i]))
                         return false;
                     break;
-                case long_format:
+                case unsigned_format:
+                    if (!printValue(format,
+                        (long)((epicsUInt32*)buffer)[i]))
+                        return false;
+                    break;
+                case signed_format:
                     if (!printValue(format,
                         (long)((epicsInt32*)buffer)[i]))
                         return false;
@@ -1150,7 +1145,17 @@ matchValue(const StreamFormat& format, const void* fieldaddress)
                 name(), fieldBuffer.expand()());
             switch (format.type)
             {
-                case long_format:
+                case unsigned_format:
+                {
+                    consumed = scanValue(format, lval);
+                    if (consumed >= 0) ((epicsUInt32*)buffer)[nord] = lval;
+                    debug("Stream::matchValue(%s): %s.%s[%li] = %lu\n",
+                            name(), pdbaddr->precord->name,
+                            ((dbFldDes*)pdbaddr->pfldDes)->name,
+                            nord, lval);
+                    break;
+                }
+                case signed_format:
                 {
                     consumed = scanValue(format, lval);
                     if (consumed >= 0) ((epicsInt32*)buffer)[nord] = lval;
@@ -1304,6 +1309,7 @@ matchValue(const StreamFormat& format, const void* fieldaddress)
             flags &= ~ScanTried;
             switch (fmt.type)
             {
+                case DBF_ULONG:
                 case DBF_LONG:
                 case DBF_ENUM:
                     error("%s: %s(%s.%s, %s, %li) failed\n",
diff --git a/src/StreamFormat.h b/src/StreamFormat.h
index f144a77..79e22b9 100644
--- a/src/StreamFormat.h
+++ b/src/StreamFormat.h
@@ -34,11 +34,12 @@ typedef enum {
 } StreamFormatFlag;
 
 typedef enum {
-    long_format   = 1,
-    enum_format   = 2,
-    double_format = 3,
-    string_format = 4,
-    pseudo_format = 5
+    unsigned_format = 1,
+    signed_format,
+    enum_format,
+    double_format,
+    string_format,
+    pseudo_format
 } StreamFormatType;
 
 extern const char* StreamFormatTypeStr[];
diff --git a/src/StreamFormatConverter.cc b/src/StreamFormatConverter.cc
index aabbdba..d03f516 100644
--- a/src/StreamFormatConverter.cc
+++ b/src/StreamFormatConverter.cc
@@ -21,6 +21,7 @@
 
 #include <stdlib.h>
 #include <ctype.h>
+#include <limits.h>
 #include "StreamFormatConverter.h"
 #include "StreamError.h"
 
@@ -310,14 +311,16 @@ parse(const StreamFormat& fmt, StreamBuffer& info,
         info.append('l');
         info.append(fmt.conv);
     }
-    return long_format;
+    if (fmt.conv == 'd' || fmt.conv == 'i') return signed_format;
+    return unsigned_format;
 }
 
 bool StdLongConverter::
 printLong(const StreamFormat& fmt, StreamBuffer& output, long value)
 {
-    if (tolower(fmt.conv) == 'x' && fmt.width && fmt.width < 2*sizeof(long))
-        value &= ~(-1L << (fmt.width<<2));
+    // limits %x/%X formats to number of half bytes in width.
+    if (fmt.width && (fmt.conv == 'x' || fmt.conv == 'X') && fmt.width < 2*sizeof(long))
+        value &= ~(-1L << (fmt.width*4));
     output.print(fmt.info, value);
     return true;
 }
@@ -329,6 +332,7 @@ scanLong(const StreamFormat& fmt, const char* input, long& value)
     int length;
     bool neg;
     int base;
+    long v;
 
     length = prepareval(fmt, input, neg);
     if (length < 0) return -1;
@@ -338,14 +342,11 @@ scanLong(const StreamFormat& fmt, const char* input, long& value)
             base = 10;
             break;
         case 'o':
-            base = 8;
-            goto signcheck;
         case 'x':
         case 'X':
-            base = 16;
-signcheck:
-        // allow negative hex and oct numbers with - flag
+            // allow negative hex and oct numbers with - flag
             if (neg && !(fmt.flags & left_flag)) return -1;
+            base = (fmt.conv == 'o') ? 8 : 16;
             break;
         case 'u':
             if (neg) return -1;
@@ -354,10 +355,10 @@ signcheck:
         default:
             base = 0;
     }
-    value = strtoul(input, &end, base);
-    if (neg) value = -value;
+    v = strtoul(input, &end, base);
     if (end == input) return -1;
     length += end-input;
+    value = neg ? -v : v;
     return length;
 }
 
@@ -545,7 +546,7 @@ parse(const StreamFormat& fmt, StreamBuffer& info,
         info.append("%n");
         return string_format;
     }
-    return long_format;
+    return unsigned_format;
 }
 
 bool StdCharsConverter::
diff --git a/src/StreamProtocol.cc b/src/StreamProtocol.cc
index 9c4c821..6f97db8 100644
--- a/src/StreamProtocol.cc
+++ b/src/StreamProtocol.cc
@@ -26,7 +26,8 @@
 #include "StreamError.h"
 
 const char* StreamFormatTypeStr[] = {
-    "none", "long", "enum", "double", "string", "pseudo"
+    // must match the order in StreamFormat.h
+    "none", "unsigned", "signed", "enum", "double", "string", "pseudo"
 };
 
 class StreamProtocolParser::Protocol::Variable
@@ -1438,7 +1439,7 @@ compileFormat(StreamBuffer& buffer, const char*& formatstr,
         // parsing failed
         return false;
     }
-    if (type < long_format && type > pseudo_format)
+    if (type < 1 && type > pseudo_format)
     {
         error(line, filename(),
             "Illegal format type %d returned from '%%%c' converter\n",
diff --git a/src/devaaiStream.c b/src/devaaiStream.c
index 6ffb437..7f03e8a 100644
--- a/src/devaaiStream.c
+++ b/src/devaaiStream.c
@@ -20,9 +20,9 @@
 
 #include <string.h>
 #include <stdlib.h>
-#include "devStream.h"
-#include <aaiRecord.h>
 #include <errlog.h>
+#include <aaiRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -57,6 +57,7 @@ static long readData (dbCommon *record, format_t *format)
                 }
                 break;
             }
+            case DBF_ULONG:
             case DBF_LONG:
             case DBF_ENUM:
             {
@@ -191,6 +192,7 @@ static long writeData (dbCommon *record, format_t *format)
                     return ERROR;
                 break;
             }
+            case DBF_ULONG:
             case DBF_LONG:
             case DBF_ENUM:
             {
diff --git a/src/devaaoStream.c b/src/devaaoStream.c
index 267f23f..0edb81b 100644
--- a/src/devaaoStream.c
+++ b/src/devaaoStream.c
@@ -20,9 +20,9 @@
 
 #include <string.h>
 #include <stdlib.h>
-#include "devStream.h"
-#include <aaoRecord.h>
 #include <errlog.h>
+#include <aaoRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -57,6 +57,7 @@ static long readData (dbCommon *record, format_t *format)
                 }
                 break;
             }
+            case DBF_ULONG:
             case DBF_LONG:
             case DBF_ENUM:
             {
@@ -191,6 +192,7 @@ static long writeData (dbCommon *record, format_t *format)
                     return ERROR;
                 break;
             }
+            case DBF_ULONG:
             case DBF_LONG:
             case DBF_ENUM:
             {
diff --git a/src/devaiStream.c b/src/devaiStream.c
index c22887a..7fc92cc 100644
--- a/src/devaiStream.c
+++ b/src/devaiStream.c
@@ -18,11 +18,18 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <aiRecord.h>
+#include <math.h>
 #include <menuConvert.h>
+#include <aiRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
+#ifdef vxWorks
+#include <private/mathP.h>
+#define isinf(x) isInf(x)
+#define isnan(x) isNan(x)
+#endif
+
 static long readData (dbCommon *record, format_t *format)
 {
     aiRecord *ai = (aiRecord *) record;
@@ -33,25 +40,28 @@ static long readData (dbCommon *record, format_t *format)
         {
             double val;
             if (streamScanf (record, format, &val)) return ERROR;
-            if (ai->aslo != 0.0) val *= ai->aslo;
+            if (ai->aslo != 0.0 && ai->aslo != 1.0) val *= ai->aslo;
             val += ai->aoff;
-            if (!INIT_RUN && ai->smoo != 0.0)
-            {
+            if (!(ai->smoo == 0.0 || ai->init || ai->udf || isinf(ai->val) || isnan(ai->val)))
                 val = ai->val * ai->smoo + val * (1.0 - ai->smoo);
-            }
             ai->val = val;
             return DO_NOT_CONVERT;
         }
+        case DBF_ULONG:
         case DBF_LONG:
         {
             long rval;
             if (streamScanf (record, format, &rval)) return ERROR;
+            ai->rval = rval;
             if (ai->linr == menuConvertNO_CONVERSION)
             {
-                ai->val = (double) rval;
+                /* allow more bits than 32 */
+                if (format->type == DBF_ULONG)
+                    ai->val = (unsigned long)rval;
+                else    
+                    ai->val = rval;
                 return DO_NOT_CONVERT;
             }
-            ai->rval = rval;
             return OK;
         }
     }
@@ -61,23 +71,32 @@ static long readData (dbCommon *record, format_t *format)
 static long writeData (dbCommon *record, format_t *format)
 {
     aiRecord *ai = (aiRecord *) record;
-    double val;
 
     switch (format->type)
     {
         case DBF_DOUBLE:
         {
-            val = ai->val - ai->aoff;
-            if (ai->aslo != 0) val /= ai->aslo;
+            double val = ai->val - ai->aoff;
+            if (ai->aslo != 0.0 && ai->aslo != 1.0) val /= ai->aslo;
             return streamPrintf (record, format, val);
         }
+        case DBF_ULONG:
+        {
+            if (ai->linr == menuConvertNO_CONVERSION)
+            {
+                /* allow more bits than 32 */
+                return streamPrintf (record, format, (unsigned long)ai->val);
+            }
+            return streamPrintf (record, format, (unsigned long)ai->rval);
+        }
         case DBF_LONG:
         {
             if (ai->linr == menuConvertNO_CONVERSION)
             {
-                return streamPrintf (record, format, (long) ai->val);
+                /* allow more bits than 32 */
+                return streamPrintf (record, format, (long)ai->val);
             }
-            return streamPrintf (record, format, (long) ai->rval);
+            return streamPrintf (record, format, (long)ai->rval);
         }
     }
     return ERROR;
diff --git a/src/devaoStream.c b/src/devaoStream.c
index fb643dc..36129eb 100644
--- a/src/devaoStream.c
+++ b/src/devaoStream.c
@@ -18,9 +18,9 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <aoRecord.h>
 #include <menuConvert.h>
+#include <aoRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -33,19 +33,24 @@ static long readData (dbCommon *record, format_t *format)
         {
             double val;
             if (streamScanf (record, format, &val)) return ERROR;
-            if (ao->aslo != 0) val *= ao->aslo;
+            if (ao->aslo != 0.0 && ao->aslo != 1.0) val *= ao->aslo;
             ao->val = val + ao->aoff;
             return DO_NOT_CONVERT;
         }
+        case DBF_ULONG:
         case DBF_LONG:
         {
             long rval;
             if (streamScanf (record, format, &rval)) return ERROR;
             ao->rbv = rval;
-            if (INIT_RUN) ao->rval = rval;
+            ao->rval = rval;
             if (ao->linr == menuConvertNO_CONVERSION)
             {
-                ao->val = (double) rval;
+                /* allow more bits than 32 */
+                if (format->type == DBF_ULONG)
+                    ao->val = (unsigned long)rval;
+                else    
+                    ao->val = rval;
                 return DO_NOT_CONVERT;
             }
             return OK;
@@ -62,23 +67,27 @@ static long writeData (dbCommon *record, format_t *format)
     {
         case DBF_DOUBLE:
         {
-            double val;
-            if (INIT_RUN) val = ao->val;
-            else val = ao->oval;
-            val -= ao->aoff;
-            if (ao->aslo != 0) val /= ao->aslo;
+            double val = (INIT_RUN ? ao->val : ao->oval) - ao->aoff;
+            if (ao->aslo != 0.0 && ao->aslo != 1.0) val /= ao->aslo;
             return streamPrintf (record, format, val);
         }
+        case DBF_ULONG:
+        {
+            if (ao->linr == menuConvertNO_CONVERSION)
+            {
+                /* allow more bits than 32 */
+                return streamPrintf (record, format, (unsigned long)(INIT_RUN ? ao->val : ao->oval));
+            }
+            return streamPrintf (record, format, (unsigned long)ao->rval);
+        }
         case DBF_LONG:
         {
             if (ao->linr == menuConvertNO_CONVERSION)
             {
-                long val;
-                if (INIT_RUN) val = (long) ao->val;
-                else val = (long) ao->oval;
-                return streamPrintf (record, format, val);
+                /* allow more bits than 32 */
+                return streamPrintf (record, format, (long)(INIT_RUN ? ao->val : ao->oval));
             }
-            return streamPrintf (record, format, (long) ao->rval);
+            return streamPrintf (record, format, (long)ao->rval);
         }
     }
     return ERROR;
diff --git a/src/devbiStream.c b/src/devbiStream.c
index 5d3c527..4a8bbbc 100644
--- a/src/devbiStream.c
+++ b/src/devbiStream.c
@@ -18,9 +18,9 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <biRecord.h>
 #include <string.h>
+#include <biRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -30,6 +30,7 @@ static long readData (dbCommon *record, format_t *format)
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             if (streamScanf (record, format, &val)) return ERROR;
@@ -69,13 +70,14 @@ static long writeData (dbCommon *record, format_t *format)
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             return streamPrintf (record, format, bi->rval);
         }
         case DBF_ENUM:
         {
-            return streamPrintf (record, format, (long) bi->val);
+            return streamPrintf (record, format, (long)bi->val);
         }
         case DBF_STRING:
         {
diff --git a/src/devboStream.c b/src/devboStream.c
index 2fa2484..ebc0dc2 100644
--- a/src/devboStream.c
+++ b/src/devboStream.c
@@ -18,9 +18,9 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <boRecord.h>
 #include <string.h>
+#include <boRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -30,6 +30,7 @@ static long readData (dbCommon *record, format_t *format)
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             if (streamScanf (record, format, &val)) return ERROR;
@@ -70,13 +71,14 @@ static long writeData (dbCommon *record, format_t *format)
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             return streamPrintf (record, format, bo->rval);
         }
         case DBF_ENUM:
         {
-            return streamPrintf (record, format, (long) bo->val);
+            return streamPrintf (record, format, (long)bo->val);
         }
         case DBF_STRING:
         {
diff --git a/src/devcalcoutStream.c b/src/devcalcoutStream.c
index b884675..8cee99e 100644
--- a/src/devcalcoutStream.c
+++ b/src/devcalcoutStream.c
@@ -17,9 +17,9 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <postfix.h>
 #include <calcoutRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -32,13 +32,17 @@ static long readData (dbCommon *record, format_t *format)
         {
             return streamScanf (record, format, &co->val);
         }
+        case DBF_ULONG:
         case DBF_LONG:
         case DBF_ENUM:
         {
             long lval;
 
             if (streamScanf (record, format, &lval)) return ERROR;
-            co->val = lval;
+            if (format->type == DBF_LONG)
+                co->val = lval;
+            else
+                co->val = (unsigned long)lval;
             return OK;
         }
     }
@@ -55,8 +59,12 @@ static long writeData (dbCommon *record, format_t *format)
         {
             return streamPrintf (record, format, co->oval);
         }
-        case DBF_LONG:
+        case DBF_ULONG:
         case DBF_ENUM:
+        {
+            return streamPrintf (record, format, (unsigned long)co->oval);
+        }
+        case DBF_LONG:
         {
             return streamPrintf (record, format, (long)co->oval);
         }
diff --git a/src/devlonginStream.c b/src/devlonginStream.c
index b542c44..9f714fa 100644
--- a/src/devlonginStream.c
+++ b/src/devlonginStream.c
@@ -18,20 +18,25 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <longinRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     longinRecord *li = (longinRecord *) record;
 
-    if (format->type == DBF_LONG || format->type == DBF_ENUM)
+    switch (format->type)
     {
-        long val;
-        if (streamScanf (record, format, &val)) return ERROR;
-        li->val = val;
-        return OK;
+        case DBF_ULONG:
+        case DBF_LONG:
+        case DBF_ENUM:
+        {       
+            long val;
+            if (streamScanf (record, format, &val)) return ERROR;
+            li->val = val;
+            return OK;
+        }
     }
     return ERROR;
 }
@@ -40,9 +45,13 @@ static long writeData (dbCommon *record, format_t *format)
 {
     longinRecord *li = (longinRecord *) record;
 
-    if (format->type == DBF_LONG || format->type == DBF_ENUM)
+    switch (format->type)
     {
-        return streamPrintf (record, format, (long) li->val);
+        case DBF_ULONG:
+        case DBF_ENUM:
+            return streamPrintf (record, format, (unsigned long)li->val);
+        case DBF_LONG:
+            return streamPrintf (record, format, (long)li->val);
     }
     return ERROR;
 }
diff --git a/src/devlongoutStream.c b/src/devlongoutStream.c
index c7003b2..c2b21ee 100644
--- a/src/devlongoutStream.c
+++ b/src/devlongoutStream.c
@@ -19,20 +19,25 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <longoutRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     longoutRecord *lo = (longoutRecord *) record;
 
-    if (format->type == DBF_LONG || format->type == DBF_ENUM)
+    switch (format->type)
     {
-        long val;
-        if (streamScanf (record, format, &val)) return ERROR;
-        lo->val = val;
-        return OK;
+        case DBF_ULONG:
+        case DBF_LONG:
+        case DBF_ENUM:
+        {       
+            long val;
+            if (streamScanf (record, format, &val)) return ERROR;
+            lo->val = val;
+            return OK;
+        }
     }
     return ERROR;
 }
@@ -41,9 +46,13 @@ static long writeData (dbCommon *record, format_t *format)
 {
     longoutRecord *lo = (longoutRecord *) record;
 
-    if (format->type == DBF_LONG || format->type == DBF_ENUM)
+    switch (format->type)
     {
-        return streamPrintf (record, format, (long) lo->val);
+        case DBF_ULONG:
+        case DBF_ENUM:
+            return streamPrintf (record, format, (unsigned long)lo->val);
+        case DBF_LONG:
+            return streamPrintf (record, format, (long)lo->val);
     }
     return ERROR;
 }
diff --git a/src/devmbbiDirectStream.c b/src/devmbbiDirectStream.c
index f3f491f..34e634d 100644
--- a/src/devmbbiDirectStream.c
+++ b/src/devmbbiDirectStream.c
@@ -19,16 +19,16 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <mbbiDirectRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     mbbiDirectRecord *mbbiD = (mbbiDirectRecord *) record;
-    long val;
+    unsigned long val;
 
-    if (format->type == DBF_LONG)
+    if (format->type == DBF_ULONG || format->type == DBF_LONG)
     {
         if (streamScanf (record, format, &val)) return ERROR;
         if (mbbiD->mask)
@@ -40,7 +40,7 @@ static long readData (dbCommon *record, format_t *format)
         else
         {
             /* No MASK, (NOBT = 0): use VAL field */
-            mbbiD->val = (short)val;
+            mbbiD->val = (unsigned short)val;
             return DO_NOT_CONVERT;
         }
     }
@@ -50,9 +50,9 @@ static long readData (dbCommon *record, format_t *format)
 static long writeData (dbCommon *record, format_t *format)
 {
     mbbiDirectRecord *mbbiD = (mbbiDirectRecord *) record;
-    long val;
+    unsigned long val;
 
-    if (format->type == DBF_LONG)
+    if (format->type == DBF_ULONG || format->type == DBF_LONG)
     {
         if (mbbiD->mask) val = mbbiD->rval & mbbiD->mask;
         else val = mbbiD->val;
diff --git a/src/devmbbiStream.c b/src/devmbbiStream.c
index 9c7b853..ad6fd04 100644
--- a/src/devmbbiStream.c
+++ b/src/devmbbiStream.c
@@ -19,19 +19,20 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <mbbiRecord.h>
 #include <string.h>
+#include <mbbiRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     mbbiRecord *mbbi = (mbbiRecord *) record;
-    long val;
+    unsigned long val;
     int i;
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             if (streamScanf (record, format, &val)) return ERROR;
diff --git a/src/devmbboDirectStream.c b/src/devmbboDirectStream.c
index 5973093..3c8de96 100644
--- a/src/devmbboDirectStream.c
+++ b/src/devmbboDirectStream.c
@@ -19,16 +19,16 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <mbboDirectRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     mbboDirectRecord *mbboD = (mbboDirectRecord *) record;
-    long val;
+    unsigned long val;
 
-    if (format->type == DBF_LONG)
+    if (format->type == DBF_ULONG || format->type == DBF_LONG)
     {
         if (streamScanf (record, format, &val)) return ERROR;
         if (mbboD->mask)
@@ -53,7 +53,7 @@ static long writeData (dbCommon *record, format_t *format)
     mbboDirectRecord *mbboD = (mbboDirectRecord *) record;
     long val;
 
-    if (format->type == DBF_LONG)
+    if (format->type == DBF_ULONG || format->type == DBF_LONG)
     {
         if (mbboD->mask) val = mbboD->rval & mbboD->mask;
         else val = mbboD->val;
diff --git a/src/devmbboStream.c b/src/devmbboStream.c
index 174696f..c00508b 100644
--- a/src/devmbboStream.c
+++ b/src/devmbboStream.c
@@ -19,19 +19,20 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <mbboRecord.h>
 #include <string.h>
+#include <mbboRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
 {
     mbboRecord *mbbo = (mbboRecord *) record;
-    long val;
+    unsigned long val;
     int i;
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             if (streamScanf (record, format, &val)) return ERROR;
@@ -76,11 +77,12 @@ static long readData (dbCommon *record, format_t *format)
 static long writeData (dbCommon *record, format_t *format)
 {
     mbboRecord *mbbo = (mbboRecord *) record;
-    long val;
+    unsigned long val;
     int i;
 
     switch (format->type)
     {
+        case DBF_ULONG:
         case DBF_LONG:
         {
             /* print VAL or RVAL ? */
diff --git a/src/devstringinStream.c b/src/devstringinStream.c
index 82e6618..5f02eeb 100644
--- a/src/devstringinStream.c
+++ b/src/devstringinStream.c
@@ -18,8 +18,8 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <stringinRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
diff --git a/src/devstringoutStream.c b/src/devstringoutStream.c
index 34c94ab..fcc2d6b 100644
--- a/src/devstringoutStream.c
+++ b/src/devstringoutStream.c
@@ -18,8 +18,8 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
 #include <stringoutRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
diff --git a/src/devwaveformStream.c b/src/devwaveformStream.c
index 81edddb..b6fadae 100644
--- a/src/devwaveformStream.c
+++ b/src/devwaveformStream.c
@@ -18,10 +18,10 @@
 *                                                              *
 ***************************************************************/
 
-#include "devStream.h"
-#include <waveformRecord.h>
 #include <string.h>
 #include <errlog.h>
+#include <waveformRecord.h>
+#include "devStream.h"
 #include <epicsExport.h>
 
 static long readData (dbCommon *record, format_t *format)
@@ -57,6 +57,7 @@ static long readData (dbCommon *record, format_t *format)
                 }
                 break;
             }
+            case DBF_ULONG:
             case DBF_LONG:
             case DBF_ENUM:
             {
diff --git a/streamApp/tests/testFormats b/streamApp/tests/testFormats
index 7fc5f0d..9364e2f 100755
--- a/streamApp/tests/testFormats
+++ b/streamApp/tests/testFormats
@@ -70,11 +70,11 @@ ioccmd {dbpf DZ:lo -1}
 if {$tcl_platform(machine) == "x86_64"} {
 assure "-1 -1 -00001 ffffffffffffffff FFFFFF 11111111111111111111111111111111 11111111111111111111111111111111 111111 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
 } else {
-assure "-1 -1 -00001 ffffffff FFFFFFFF 11111111111111111111111111111111 11111111111111111111111111111111 111111 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
+assure "-1 -1 -00001 ffffffff FFFFFF 11111111111111111111111111111111 11111111111111111111111111111111 111111 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"
 }
 ioccmd {dbpf DZ:lo -1234}
 if {$tcl_platform(machine) == "x86_64"} {
-assure "-1234 -1234 -01234 fffffffffffffb2e FFFB2E 1111111111111111111111111111111111111111111111111111101100101110 1111111111111111111111111111111111111111111111111111101100101110 101110 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!..!.!!!. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!..!.!!!.\n"
+assure "-1234 -1234 -01234 fffffffffffffb2e FFFB2E 11111111111111111111101100101110 11111111111111111111101100101110 101110 !!!!!!!!!!!!!!!!!!!!!.!!..!.!!!. !!!!!!!!!!!!!!!!!!!!!.!!..!.!!!.\n"
 } else {
 assure "-1234 -1234 -01234 fffffb2e FFFB2E 11111111111111111111101100101110 11111111111111111111101100101110 101110 !!!!!!!!!!!!!!!!!!!!!.!!..!.!!!. !!!!!!!!!!!!!!!!!!!!!.!!..!.!!!.\n"
 }