diff --git a/doc/simh.doc b/doc/simh.doc
index 7df45d07..5be752c1 100644
Binary files a/doc/simh.doc and b/doc/simh.doc differ
diff --git a/sim_defs.h b/sim_defs.h
index ccfaf825..9cca1b79 100644
--- a/sim_defs.h
+++ b/sim_defs.h
@@ -786,6 +786,8 @@ struct FILEREF {
 #define DRDATA(nm,loc,wd) #nm, &(loc), 10, (wd), 0, 1, NULL, NULL
 /* Right Justified Hexadecimal Register Data */
 #define HRDATA(nm,loc,wd) #nm, &(loc), 16, (wd), 0, 1, NULL, NULL
+/* Right Justified Binary Register Data */
+#define BINRDATA(nm,loc,wd) #nm, &(loc), 2, (wd), 0, 1, NULL, NULL
 /* One-bit binary flag at an arbitrary offset in a 32-bit word Register */
 #define FLDATA(nm,loc,pos) #nm, &(loc), 2, 1, (pos), 1, NULL, NULL
 /* Arbitrary location and Radix Register */
@@ -796,6 +798,7 @@ struct FILEREF {
 #define ORDATAD(nm,loc,wd,desc) #nm, &(loc), 8, (wd), 0, 1, (desc), NULL
 #define DRDATAD(nm,loc,wd,desc) #nm, &(loc), 10, (wd), 0, 1, (desc), NULL
 #define HRDATAD(nm,loc,wd,desc) #nm, &(loc), 16, (wd), 0, 1, (desc), NULL
+#define BINRDATAD(nm,loc,wd,desc) #nm, &(loc), 2, (wd), 0, 1, (desc), NULL
 #define FLDATAD(nm,loc,pos,desc) #nm, &(loc), 2, 1, (pos), 1, (desc), NULL
 #define GRDATAD(nm,loc,rdx,wd,pos,desc) #nm, &(loc), (rdx), (wd), (pos), 1, (desc), NULL
 #define BRDATAD(nm,loc,rdx,wd,dep,desc) #nm, (loc), (rdx), (wd), 0, (dep), (desc), NULL
@@ -803,6 +806,7 @@ struct FILEREF {
 #define ORDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 8, (wd), 0, 1, (desc), (flds)
 #define DRDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 10, (wd), 0, 1, (desc), (flds)
 #define HRDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 16, (wd), 0, 1, (desc), (flds)
+#define BINRDATADF(nm,loc,wd) #nm, &(loc), 2, (wd), 0, 1, NULL, NULL
 #define FLDATADF(nm,loc,pos,desc,flds) #nm, &(loc), 2, 1, (pos), 1, (desc), (flds)
 #define GRDATADF(nm,loc,rdx,wd,pos,desc,flds) #nm, &(loc), (rdx), (wd), (pos), 1, (desc), (flds)
 #define BRDATADF(nm,loc,rdx,wd,dep,desc,flds) #nm, (loc), (rdx), (wd), 0, (dep), (desc), (flds)
@@ -818,18 +822,21 @@ struct FILEREF {
 #define ORDATA(nm,loc,wd) "nm", &(loc), 8, (wd), 0, 1, NULL, NULL
 #define DRDATA(nm,loc,wd) "nm", &(loc), 10, (wd), 0, 1, NULL, NULL
 #define HRDATA(nm,loc,wd) "nm", &(loc), 16, (wd), 0, 1, NULL, NULL
+#define BINRDATA(nm,loc,wd) "nm", &(loc), 2, (wd), 0, 1, NULL, NULL
 #define FLDATA(nm,loc,pos) "nm", &(loc), 2, 1, (pos), 1, NULL, NULL
 #define GRDATA(nm,loc,rdx,wd,pos) "nm", &(loc), (rdx), (wd), (pos), 1, NULL, NULL
 #define BRDATA(nm,loc,rdx,wd,dep) "nm", (loc), (rdx), (wd), 0, (dep), NULL, NULL
 #define ORDATAD(nm,loc,wd,desc) "nm", &(loc), 8, (wd), 0, 1, (desc), NULL
 #define DRDATAD(nm,loc,wd,desc) "nm", &(loc), 10, (wd), 0, 1, (desc), NULL
 #define HRDATAD(nm,loc,wd,desc) "nm", &(loc), 16, (wd), 0, 1, (desc), NULL
+#define BINRDATAD(nm,loc,wd,desc) "nm", &(loc), 2, (wd), 0, 1, (desc), NULL
 #define FLDATAD(nm,loc,pos,desc) "nm", &(loc), 2, 1, (pos), 1, (desc), NULL
 #define GRDATAD(nm,loc,rdx,wd,pos,desc) "nm", &(loc), (rdx), (wd), (pos), 1, (desc), NULL
 #define BRDATAD(nm,loc,rdx,wd,dep,desc) "nm", (loc), (rdx), (wd), 0, (dep), (desc), NULL
 #define ORDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 8, (wd), 0, 1, (desc), (flds)
 #define DRDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 10, (wd), 0, 1, (desc), (flds)
 #define HRDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 16, (wd), 0, 1, (desc), (flds)
+#define BINRDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 2, (wd), 0, 1, (desc), (flds)
 #define FLDATADF(nm,loc,pos,desc,flds) "nm", &(loc), 2, 1, (pos), 1, (desc), (flds)
 #define GRDATADF(nm,loc,rdx,wd,pos,desc,flds) "nm", &(loc), (rdx), (wd), (pos), 1, (desc), (flds)
 #define BRDATADF(nm,loc,rdx,wd,dep,desc,flds) "nm", (loc), (rdx), (wd), 0, (dep), (desc), (flds)