diff --git a/descrip.mms b/descrip.mms
index 2d79bbc3..a362c2a2 100644
--- a/descrip.mms
+++ b/descrip.mms
@@ -639,22 +639,22 @@ VAX610_SOURCE1 = $(VAX610_DIR)VAX_CPU.C,$(VAX610_DIR)VAX_CPU1.C,\
                  $(VAX610_DIR)VAX_OCTA.C,$(VAX610_DIR)VAX_CMODE.C,\
                  $(VAX610_DIR)VAX_MMU.C,$(VAX610_DIR)VAX_SYS.C,\
                  $(VAX610_DIR)VAX_SYSCM.C,$(VAX610_DIR)VAX610_STDDEV.C,\
-                 $(VAX610_DIR)VAX610_MEM.C,\
+                 $(VAX610_DIR)VAX610_MEM.C,$(VAX610_DIR)VAX610_SYSDEV.C,\
                  $(VAX610_DIR)VAX610_IO.C,$(VAX610_DIR)VAX610_SYSLIST.C
 VAX610_LIB2 = $(LIB_DIR)VAX610L2-$(ARCH).OLB
-VAX610_SOURCE2 = $(PDP11_DIR)PDP11_RL.C,$(PDP11_DIR)PDP11_RQ.C,\
+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,\
-                 $(PDP11_DIR)PDP11_XU.C,$(PDP11_DIR)PDP11_RY.C,\
-                 $(PDP11_DIR)PDP11_CR.C,$(PDP11_DIR)PDP11_HK.C,\
-                 $(PDP11_DIR)PDP11_IO_LIB.C
+                 $(PDP11_DIR)PDP11_XQ.C,$(PDP11_DIR)PDP11_CR.C,\
+                 $(PDP11_DIR)PDP11_RY.C,$(PDP11_DIR)PDP11_VH.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_730=1")
+                 /DEF=($(CC_DEFS),"VM_VAX=1","USE_ADDR64=1","USE_INT64=1"$(PCAP_DEFS),"VAX_610=1")
 VAX610_SIMH_LIB = $(SIMH_LIB64)
 .ELSE
 VAX610_OPTIONS = /INCL=($(SIMH_DIR),$(VAX610_DIR),$(PDP11_DIR)$(PCAP_INC))\
-                 /DEF=($(CC_DEFS),"VM_VAX=1"$(PCAP_DEFS),"VAX_730=1")
+                 /DEF=($(CC_DEFS),"VM_VAX=1"$(PCAP_DEFS),"VAX_610=1")
 VAX610_SIMH_LIB = $(SIMH_LIB)
 .ENDIF