diff --git a/scp.h b/scp.h
index b5c1b2c3..aa732ceb 100644
--- a/scp.h
+++ b/scp.h
@@ -243,6 +243,8 @@ extern FILE *sim_deb;                                   /* debug file */
 extern FILEREF *sim_deb_ref;                            /* debug file file reference */
 extern int32 sim_deb_switches;                          /* debug display flags */
 extern struct timespec sim_deb_basetime;                /* debug base time for relative time output */
+extern DEVICE **sim_internal_devices;
+extern uint32 sim_internal_device_count;
 extern UNIT *sim_clock_queue;
 extern int32 sim_is_running;
 extern t_bool sim_processing_event;                     /* Called from sim_process_event */
diff --git a/sim_console.c b/sim_console.c
index 0e8697bf..4c30743b 100644
--- a/sim_console.c
+++ b/sim_console.c
@@ -1510,6 +1510,14 @@ if (sim_deb) {
             show_dev_debug (st, dptr, NULL, 0, NULL);
             }
         }
+    for (i = 0; sim_internal_device_count && (dptr = sim_internal_devices[i]); ++i) {
+        if (!(dptr->flags & DEV_DIS) &&
+            (dptr->flags & DEV_DEBUG) &&
+            (dptr->dctrl)) {
+            fprintf (st, "Device: %-6s ", dptr->name);
+            show_dev_debug (st, dptr, NULL, 0, NULL);
+            }
+        }
     }
 else fprintf (st, "Debug output disabled\n");
 return SCPE_OK;