diff --git a/imlac/imlac_cpu.c b/imlac/imlac_cpu.c
index 2c05ef4d..1fa8416a 100644
--- a/imlac/imlac_cpu.c
+++ b/imlac/imlac_cpu.c
@@ -211,7 +211,8 @@ static void cpu_class1 (uint16 insn)
 
 static void cpu_ral (int n)
 {
-  int i, x;
+  int i;
+  uint16 x;
   for (i = 0; i < n; i++) {
     x = L;
     L = AC >> 15;
@@ -221,7 +222,9 @@ static void cpu_ral (int n)
 
 static void cpu_rar (int n)
 {
-  int i, x;
+  int i;
+  uint16 x;
+
   for (i = 0; i < n; i++) {
     x = L;
     L = AC & 1;
@@ -252,7 +255,7 @@ static void cpu_class2 (uint16 insn)
       x = 01600000 >> n;
     else
       x = 0;
-    AC = x | ((AC & 077777) >> n);
+    AC = (uint16) (x | ((AC & 077777) >> n));
     break;
   }
 }
@@ -485,7 +488,7 @@ t_stat sim_instr (void)
     }
   }
 
-  return SCPE_OK;
+  /* unreachable: return SCPE_OK; */
 }
 
 static t_stat
diff --git a/imlac/imlac_crt.c b/imlac/imlac_crt.c
index 1e037181..4113102f 100644
--- a/imlac/imlac_crt.c
+++ b/imlac/imlac_crt.c
@@ -42,7 +42,8 @@ static UNIT crt_unit = {
 };
 
 static DEBTAB crt_deb[] = {
-  { "DBG", DBG },
+  { "DBG",  DBG },
+  { "VVID", SIM_VID_DBG_VIDEO },
   { NULL, 0 }
 };
 
@@ -90,8 +91,8 @@ crt_reset (DEVICE *dptr)
   } else {
     display_reset ();
     display_init (DIS_IMLAC, 1, dptr);
-    sim_activate_abs (&crt_unit, 0);
     vid_register_quit_callback (&crt_quit_callback);
+    sim_activate_abs (&crt_unit, 0);
   }
 #endif
   return SCPE_OK;
diff --git a/imlac/imlac_dp.c b/imlac/imlac_dp.c
index 80fe7104..6f9adc3a 100644
--- a/imlac/imlac_dp.c
+++ b/imlac/imlac_dp.c
@@ -45,6 +45,7 @@ static uint16 SYNC = 1;
 /* Function declaration. */
 static uint16 dp_iot (uint16, uint16);
 static t_stat dp_svc (UNIT *uptr);
+static t_stat dp_reset(DEVICE *dptr);
 static uint16 sync_iot (uint16, uint16);
 static t_stat sync_svc (UNIT *uptr);
 
@@ -83,7 +84,7 @@ static DEBTAB dp_deb[] = {
 DEVICE dp_dev = {
   "DP", &dp_unit, dp_reg, NULL,
   1, 8, 16, 1, 8, 16,
-  NULL, NULL, NULL,
+  NULL, NULL, dp_reset,
   NULL, NULL, NULL, &dp_imdev, DEV_DEBUG, 0, dp_deb,
   NULL, NULL, NULL, NULL, NULL, NULL
 };
@@ -131,7 +132,7 @@ dp_on (int flag)
     if (SYNC && HALT)
       flag_on (FLAG_SYNC);
   }
-  ON = flag;
+  ON = (uint16) flag;
 }
 
 uint16
@@ -474,6 +475,13 @@ dp_svc(UNIT * uptr)
   return SCPE_OK;
 }
 
+static t_stat
+dp_reset(DEVICE * uptr)
+{
+  sim_activate_abs (&dp_unit, 0);
+  return SCPE_OK;
+}
+
 static t_stat
 sync_svc (UNIT *uptr)
 {