diff --git a/VAX/vax860_abus.c b/VAX/vax860_abus.c
index c2d6f4a2..0bd23cfe 100644
--- a/VAX/vax860_abus.c
+++ b/VAX/vax860_abus.c
@@ -473,7 +473,7 @@ return;
 
 int32 ReadReg (int32 pa, int32 lnt)
 {
-int32 nexus, val;
+int32 val;
 
 if (ADDR_IS_SBIA (pa)) return sbia_rd (pa, lnt);        /* SBI adapter space? */
 if (ADDR_IS_REG (pa)) {                                 /* reg space? */
@@ -496,8 +496,6 @@ return 0;
 
 void WriteReg (int32 pa, int32 val, int32 lnt)
 {
-int32 nexus;
-
 if (ADDR_IS_SBIA (pa)) {                                /* SBI adapter space? */
 	sbia_wr (pa, val, lnt);
     SET_IRQL;
diff --git a/VAX/vax860_sbia.c b/VAX/vax860_sbia.c
index b4649e0e..50bdb83f 100644
--- a/VAX/vax860_sbia.c
+++ b/VAX/vax860_sbia.c
@@ -171,7 +171,11 @@ int32 sbia_rd (int32 pa, int32 lnt)
 
 	case 0x11:                                          /* SBIMT */
 		return sbi_mt & SBIMT_RD;
-	}
+
+    default:                                            /* Anything else is not impl */
+        return 0;
+   
+    }
 }
 
 void sbia_wr (int32 pa, int32 val, int32 lnt)
diff --git a/VAX/vax860_stddev.c b/VAX/vax860_stddev.c
index 129aaa31..24f39c36 100644
--- a/VAX/vax860_stddev.c
+++ b/VAX/vax860_stddev.c
@@ -971,13 +971,13 @@ else switch (lc_fnc) {                                  /* idle, case */
     case LC_FNCAC:                                      /* array configuration */
         lc_buf[3] = LC_FNCAC;
         if (MEMSIZE < MAXMEMSIZE) {                     /* 4MB Boards */
-            lc_buf[2] = (MEMSIZE >> 22);                /* slots in use */
+            lc_buf[2] = (uint8)(MEMSIZE >> 22);         /* slots in use */
             for (i = 0; i < lc_buf[2]; i++) {
                 mask |= (2 << (i * 2));                 /* build array mask */
                 }
             }
         else {
-            lc_buf[2] = (MEMSIZE >> 24);                /* 16MB Boards */
+            lc_buf[2] = (uint8)(MEMSIZE >> 24);         /* 16MB Boards */
             for (i = 0; i < lc_buf[2]; i++) {
                 mask |= (1 << (i * 2));                 /* build array mask */
                 }
diff --git a/VAX/vax860_syslist.c b/VAX/vax860_syslist.c
index 4df2f178..49767974 100644
--- a/VAX/vax860_syslist.c
+++ b/VAX/vax860_syslist.c
@@ -53,6 +53,7 @@ extern DEVICE tq_dev;
 extern DEVICE tu_dev;
 extern DEVICE dz_dev;
 extern DEVICE xu_dev, xub_dev;
+extern DEVICE dmc_dev[];
 
 extern int32 sim_switches;
 extern UNIT cpu_unit;
@@ -87,6 +88,10 @@ DEVICE *sim_devices[] = {
     &tq_dev,
     &xu_dev,
     &xub_dev,
+	&dmc_dev[0],
+	&dmc_dev[1],
+	&dmc_dev[2],
+	&dmc_dev[3],
     NULL
     };