diff --git a/VAX/vax_vc.c b/VAX/vax_vc.c
index 2112cb17..d5a13222 100644
--- a/VAX/vax_vc.c
+++ b/VAX/vax_vc.c
@@ -270,6 +270,9 @@ DEBTAB vc_debug[] = {
     {"MBC",     DBG_INT6},
     {"SPARE",   DBG_INT7},
     {"INT",     DBG_INT0|DBG_INT1|DBG_INT2|DBG_INT3|DBG_INT4|DBG_INT5|DBG_INT6|DBG_INT7},
+    {"VMOUSE",  SIM_VID_DBG_MOUSE},
+    {"VKEY",    SIM_VID_DBG_KEY},
+    {"VVIDEO",  SIM_VID_DBG_VIDEO},
     {0}
     };
 
@@ -798,7 +801,7 @@ if (dptr->flags & DEV_DIS)
     return vid_close ();
 
 if (!vid_active)  {
-    r = vid_open (VC_XSIZE, VC_YSIZE);                      /* display size */
+    r = vid_open (dptr, VC_XSIZE, VC_YSIZE);            /* display size */
     if (r != SCPE_OK)
         return r;
     printf ("QVSS Display Created.  ");
diff --git a/sim_video.c b/sim_video.c
index 27d62c71..1d373921 100644
--- a/sim_video.c
+++ b/sim_video.c
@@ -71,8 +71,9 @@ SDL_Thread *vid_thread_id;                              /* event thread handle *
 SDL_Color vid_palette[256];
 KEY_EVENT_QUEUE vid_key_events;                         /* keyboard events */
 MOUSE_EVENT_QUEUE vid_mouse_events;                     /* mouse events */
+DEVICE *vid_dev;
 
-t_stat vid_open (uint32 width, uint32 height)
+t_stat vid_open (DEVICE *dptr, uint32 width, uint32 height)
 {
 if (!vid_active) {
     vid_active = TRUE;
@@ -106,6 +107,7 @@ if (!vid_active) {
     SDL_SetColors (vid_image, vid_palette, 0, 2);
 
     memset (&vid_key_state, 0, sizeof(vid_key_state));
+    vid_dev = dptr;
     }
 return SCPE_OK;
 }
@@ -120,6 +122,7 @@ if (vid_active) {
     user_event.user.code = EVENT_CLOSE;
     user_event.user.data1 = NULL;
     user_event.user.data2 = NULL;
+    vid_dev = NULL;
 
     SDL_PushEvent (&user_event);
     }
@@ -536,6 +539,7 @@ if (vid_mouse_captured) {
 if (!sim_is_running)
     return;
 if (SDL_SemWait (vid_key_events.sem) == 0) {
+    sim_debug (SIM_VID_DBG_KEY,vid_dev, "Keyboard Event: State: %d, Keysym: %d\n", event->state, event->keysym);
     if (vid_key_events.count < MAX_EVENTS) {
         if (event->state == SDL_PRESSED) {
             if (!vid_key_state[event->keysym.sym]) {    /* Key was not down before */
@@ -585,6 +589,7 @@ if ((event->x == 0) ||
 if (!sim_is_running)
     return;
 if (SDL_SemWait (vid_mouse_events.sem) == 0) {
+    sim_debug (SIM_VID_DBG_MOUSE,vid_dev, "Mouse Move Event: (%d,%d)\n", event->xrel, event->yrel);
     if (vid_mouse_events.count < MAX_EVENTS) {
         ev.x_rel = event->xrel;
         ev.y_rel = (-event->yrel);
@@ -628,6 +633,7 @@ if (!vid_mouse_captured) {
 if (!sim_is_running)
     return;
 if (SDL_SemWait (vid_mouse_events.sem) == 0) {
+    sim_debug (SIM_VID_DBG_MOUSE,vid_dev, "Mouse Button Event: State: %d, Button: %d, (%d,%d)\n", event->state, event->button, event->x, event->y);
     if (vid_mouse_events.count < MAX_EVENTS) {
         state = (event->state == SDL_PRESSED) ? TRUE : FALSE;
         ev.x_rel = 0;
diff --git a/sim_video.h b/sim_video.h
index 939f31f4..cbaa6259 100644
--- a/sim_video.h
+++ b/sim_video.h
@@ -168,7 +168,7 @@ struct key_event {
 typedef struct mouse_event SIM_MOUSE_EVENT;
 typedef struct key_event SIM_KEY_EVENT;
 
-t_stat vid_open (uint32 width, uint32 height);
+t_stat vid_open (DEVICE *dptr, uint32 width, uint32 height);
 t_stat vid_close (void);
 t_stat vid_poll_kb (SIM_KEY_EVENT *ev);
 t_stat vid_poll_mouse (SIM_MOUSE_EVENT *ev);
@@ -180,4 +180,8 @@ t_stat vid_show_release_key (FILE* st, UNIT* uptr, int32 val, void* desc);
 
 extern t_bool vid_active;
 
+#define SIM_VID_DBG_MOUSE   0x01000000
+#define SIM_VID_DBG_KEY     0x02000000
+#define SIM_VID_DBG_VIDEO   0x04000000
+
 #endif