diff --git a/descrip.mms b/descrip.mms
index eac85a65..9b57ac0c 100644
--- a/descrip.mms
+++ b/descrip.mms
@@ -625,7 +625,8 @@ VAX_SOURCE2 = $(PDP11_DIR)PDP11_IO_LIB.C,\
               $(PDP11_DIR)PDP11_RL.C,$(PDP11_DIR)PDP11_RQ.C,\
               $(PDP11_DIR)PDP11_TS.C,$(PDP11_DIR)PDP11_DZ.C,\
               $(PDP11_DIR)PDP11_LP.C,$(PDP11_DIR)PDP11_TQ.C,\
-              $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C
+              $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C,\
+              $(PDP11_DIR)PDP11_CR.C
 .IFDEF ALPHA_OR_IA64
 VAX_OPTIONS = /INCL=($(SIMH_DIR),$(VAX_DIR),$(PDP11_DIR)$(PCAP_INC))\
                 /DEF=($(CC_DEFS),"VM_VAX=1","USE_ADDR64=1","USE_INT64=1"$(PCAP_DEFS))
@@ -652,7 +653,8 @@ VAX610_SOURCE2 = $(PDP11_DIR)PDP11_IO_LIB.C,\
                  $(PDP11_DIR)PDP11_RL.C,$(PDP11_DIR)PDP11_RQ.C,\
                  $(PDP11_DIR)PDP11_TS.C,$(PDP11_DIR)PDP11_DZ.C,\
                  $(PDP11_DIR)PDP11_LP.C,$(PDP11_DIR)PDP11_TQ.C,\
-                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C
+                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C,\
+                 $(PDP11_DIR)PDP11_CR.C
 .IFDEF ALPHA_OR_IA64
 VAX610_OPTIONS = /INCL=($(SIMH_DIR),$(VAX610_DIR),$(PDP11_DIR)$(PCAP_INC))\
                  /DEF=($(CC_DEFS),"VM_VAX=1","USE_ADDR64=1","USE_INT64=1"$(PCAP_DEFS),"VAX_610=1")
@@ -679,7 +681,8 @@ VAX630_SOURCE2 = $(PDP11_DIR)PDP11_IO_LIB.C,\
                  $(PDP11_DIR)PDP11_RL.C,$(PDP11_DIR)PDP11_RQ.C,\
                  $(PDP11_DIR)PDP11_TS.C,$(PDP11_DIR)PDP11_DZ.C,\
                  $(PDP11_DIR)PDP11_LP.C,$(PDP11_DIR)PDP11_TQ.C,\
-                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C
+                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C,\
+                 $(PDP11_DIR)PDP11_CR.C
 .IFDEF ALPHA_OR_IA64
 VAX630_OPTIONS = /INCL=($(SIMH_DIR),$(VAX630_DIR),$(PDP11_DIR)$(PCAP_INC))\
                  /DEF=($(CC_DEFS),"VM_VAX=1","USE_ADDR64=1","USE_INT64=1"$(PCAP_DEFS),"VAX_630=1")
@@ -706,7 +709,8 @@ VAX620_SOURCE2 = $(PDP11_DIR)PDP11_IO_LIB.C,\
                  $(PDP11_DIR)PDP11_RL.C,$(PDP11_DIR)PDP11_RQ.C,\
                  $(PDP11_DIR)PDP11_TS.C,$(PDP11_DIR)PDP11_DZ.C,\
                  $(PDP11_DIR)PDP11_LP.C,$(PDP11_DIR)PDP11_TQ.C,\
-                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C
+                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_VH.C,\
+                 $(PDP11_DIR)PDP11_CR.C
 .IFDEF ALPHA_OR_IA64
 VAX620_OPTIONS = /INCL=($(SIMH_DIR),$(VAX620_DIR),$(PDP11_DIR)$(PCAP_INC))\
                  /DEF=($(CC_DEFS),"VM_VAX=1","USE_ADDR64=1","USE_INT64=1"$(PCAP_DEFS),"VAX_620=1")
diff --git a/makefile b/makefile
index 8c7ee266..8d440205 100644
--- a/makefile
+++ b/makefile
@@ -511,7 +511,8 @@ VAX = ${VAXD}/vax_cpu.c ${VAXD}/vax_cpu1.c ${VAXD}/vax_fpa.c ${VAXD}/vax_io.c \
 	${VAXD}/vax_sys.c  ${VAXD}/vax_syscm.c ${VAXD}/vax_syslist.c \
 	${PDP11D}/pdp11_rl.c ${PDP11D}/pdp11_rq.c ${PDP11D}/pdp11_ts.c \
 	${PDP11D}/pdp11_dz.c ${PDP11D}/pdp11_lp.c ${PDP11D}/pdp11_tq.c \
-	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_io_lib.c
+	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_cr.c \
+	${PDP11D}/pdp11_io_lib.c
 VAX_OPT = -DVM_VAX -DUSE_INT64 -DUSE_ADDR64 -I ${VAXD} -I ${PDP11D} ${NETWORK_OPT}
 
 
@@ -522,7 +523,8 @@ VAX610 = ${VAXD}/vax_cpu.c ${VAXD}/vax_cpu1.c ${VAXD}/vax_fpa.c \
 	${VAXD}/vax610_io.c ${VAXD}/vax610_syslist.c ${VAXD}/vax610_mem.c \
 	${PDP11D}/pdp11_rl.c ${PDP11D}/pdp11_rq.c ${PDP11D}/pdp11_ts.c \
 	${PDP11D}/pdp11_dz.c ${PDP11D}/pdp11_lp.c ${PDP11D}/pdp11_tq.c \
-	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_io_lib.c
+	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_cr.c \
+	${PDP11D}/pdp11_io_lib.c
 VAX610_OPT = -DVM_VAX -DVAX_610 -DUSE_INT64 -DUSE_ADDR64 -I ${VAXD} -I ${PDP11D} ${NETWORK_OPT}
 
 VAX630 = ${VAXD}/vax_cpu.c ${VAXD}/vax_cpu1.c ${VAXD}/vax_fpa.c \
@@ -532,7 +534,8 @@ VAX630 = ${VAXD}/vax_cpu.c ${VAXD}/vax_cpu1.c ${VAXD}/vax_fpa.c \
 	${VAXD}/vax630_io.c ${VAXD}/vax630_syslist.c \
 	${PDP11D}/pdp11_rl.c ${PDP11D}/pdp11_rq.c ${PDP11D}/pdp11_ts.c \
 	${PDP11D}/pdp11_dz.c ${PDP11D}/pdp11_lp.c ${PDP11D}/pdp11_tq.c \
-	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_io_lib.c
+	${PDP11D}/pdp11_xq.c ${PDP11D}/pdp11_vh.c ${PDP11D}/pdp11_cr.c \
+	${PDP11D}/pdp11_io_lib.c
 VAX620_OPT = -DVM_VAX -DVAX_620 -DUSE_INT64 -DUSE_ADDR64 -I ${VAXD} -I ${PDP11D} ${NETWORK_OPT}
 VAX630_OPT = -DVM_VAX -DVAX_630 -DUSE_INT64 -DUSE_ADDR64 -I ${VAXD} -I ${PDP11D} ${NETWORK_OPT}