diff --git a/modules/database/src/std/rec/boRecord.c b/modules/database/src/std/rec/boRecord.c
index 05195b880..e093f9cbb 100644
--- a/modules/database/src/std/rec/boRecord.c
+++ b/modules/database/src/std/rec/boRecord.c
@@ -34,7 +34,7 @@
 #include "special.h"
 #include "menuIvoa.h"
 #include "menuOmsl.h"
-#include "menuYesNo.h"
+#include "menuSimm.h"
 
 #define GEN_SIZE_OFFSET
 #include "boRecord.h"
@@ -427,14 +427,18 @@ static long writeValue(boRecord *prec)
     }
 
     switch (prec->simm) {
-    case menuYesNoNO:
+    case menuSimmNO:
         status = pdset->write_bo(prec);
         break;
 
-    case menuYesNoYES: {
+    case menuSimmYES:
+    case menuSimmRAW:
         recGblSetSevr(prec, SIMM_ALARM, prec->sims);
         if (prec->pact || (prec->sdly < 0.)) {
-            status = dbPutLink(&prec->siol, DBR_USHORT, &prec->val, 1);
+            if (prec->simm == menuSimmYES)
+                status = dbPutLink(&prec->siol, DBR_USHORT, &prec->val, 1);
+            else /* prec->simm == menuSimmRAW */
+                status = dbPutLink(&prec->siol, DBR_ULONG, &prec->rval, 1);
             prec->pact = FALSE;
         } else { /* !prec->pact && delay >= 0. */
             epicsCallback *pvt = prec->simpvt;
@@ -446,7 +450,6 @@ static long writeValue(boRecord *prec)
             prec->pact = TRUE;
         }
         break;
-    }
 
     default:
         recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
diff --git a/modules/database/src/std/rec/boRecord.dbd.pod b/modules/database/src/std/rec/boRecord.dbd.pod
index bfbc8e820..8c3deabcd 100644
--- a/modules/database/src/std/rec/boRecord.dbd.pod
+++ b/modules/database/src/std/rec/boRecord.dbd.pod
@@ -206,8 +206,9 @@ The WPDT field is a private field for honoring seconds to hold HIGH.
 
 The following fields are used to operate the record in simulation mode.
 
-If SIMM (fetched through SIML) is YES, the record is put in SIMS
-severity and the value is written through SIOL.
+If SIMM (fetched through SIML, if populated) is YES, the record is put
+in SIMS severity and the unconverted value is written through SIOL.
+If SIMM is RAW, the value is converted and RVAL is written.
 SSCN sets a different SCAN mechanism to use in simulation mode.
 SDLY sets a delay (in sec) that is used for asynchronous simulation
 processing.
@@ -352,7 +353,7 @@ for more information on simulation mode and its fields.
 		prompt("Simulation Mode")
 		special(SPC_MOD)
 		interest(1)
-		menu(menuYesNo)
+                menu(menuSimm)
 	}
 	field(SIMS,DBF_MENU) {
 		prompt("Simulation Mode Severity")
diff --git a/modules/database/test/std/rec/simmTest.c b/modules/database/test/std/rec/simmTest.c
index 14deb7a1f..908d42989 100644
--- a/modules/database/test/std/rec/simmTest.c
+++ b/modules/database/test/std/rec/simmTest.c
@@ -65,7 +65,8 @@ static char *rawSupp[] = {
     "bi",
     "mbbi",
     "mbbiDirect",
-    "ao"
+    "ao",
+    "bo"
 };
 
 static
@@ -403,15 +404,24 @@ void testSiolWrite(const char *name,
         testdbPutFieldOk(nameVAL, DBR_LONG, 1);
     testdbGetFieldEqual(nameSimval, DBR_USHORT, 1);
 
-    if(hasRawSimmSupport(name)){
+    if (hasRawSimmSupport(name)) {
         testDiag("in simmRAW, RVAL should be written to SIOL");
         testDiag("SIML overrides SIMM, disable it here");
         testdbPutFieldOk(nameSIML, DBR_STRING, "");
         testdbPutFieldOk(nameSIMM, DBR_STRING, "RAW");
-        testdbPutFieldOk(nameROFF, DBR_ULONG, 2);
-        testdbPutFieldOk(nameVAL, DBR_DOUBLE, 5.);
-        testdbGetFieldEqual(nameRVAL, DBR_LONG, 3);       
-        testdbGetFieldEqual(nameSimval, DBR_DOUBLE, 3.);
+        if (strcmp(name, "ao") == 0) {
+            testdbPutFieldOk(nameROFF, DBR_ULONG, 2);
+            testdbPutFieldOk(nameVAL, DBR_DOUBLE, 5.);
+            testdbGetFieldEqual(nameRVAL, DBR_LONG, 3);
+            testdbGetFieldEqual(nameSimval, DBR_DOUBLE, 3.);
+        } else if (strcmp(name, "bo") == 0) {
+            boRecord *prec;
+            prec = (boRecord *) testdbRecordPtr("bo");
+            prec->mask = 0x55;
+            testdbPutFieldOk(nameVAL, DBR_USHORT, 1);
+            testdbGetFieldEqual(nameRVAL, DBR_ULONG, 0x55);
+            testdbGetFieldEqual(nameSimval, DBR_ULONG, 0x55);
+        }
         testdbPutFieldOk(nameSIML, DBR_STRING, nameSimmode);
     }
 
@@ -532,7 +542,7 @@ void testAllRecTypes(void)
 
 MAIN(simmTest)
 {
-    testPlan(1199);
+    testPlan(1221);
     startSimmTestIoc("simmTest.db");
 
     testSimmSetup();