diff --git a/src/mame/drivers/segas16b.c b/src/mame/drivers/segas16b.c
index 79980aa6758..89d1d8c35f7 100644
--- a/src/mame/drivers/segas16b.c
+++ b/src/mame/drivers/segas16b.c
@@ -6399,7 +6399,7 @@ GAME( 1988, tetris2,  tetris,   system16b,      tetris,   generic_5704,  ROT0,
 GAME( 1988, tetris1,  tetris,   system16b,      tetris,   generic_5358,  ROT0,   "Sega",           "Tetris (set 1, Japan, System 16B, FD1094 317-0091)", 0 )
 GAME( 1987, timescan, 0,        timescan,       timescan, generic_5358,  ROT270, "Sega",           "Time Scanner (set 2, System 16B)", 0 )
 GAME( 1994, toryumon, 0,        system16b,      toryumon, generic_5797,  ROT0,   "Sega",           "Toryumon", 0 )
-GAME( 1989, tturf,    0,        system16b_8751, tturf,    tturf_5704,    ROT0,   "Sega / Sunsoft", "Tough Turf (set 2, Japan, 8751 317-0104)", 0)
+GAME( 1989, tturf,    0,        system16b_8751, tturf,    tturf_5704,    ROT0,   "Sega / Sunsoft", "Tough Turf (set 2, Japan, 8751 317-0104)", GAME_NO_SOUND /* due to missing ROM only */)
 GAME( 1989, tturfu,   tturf,    system16b_8751, tturf,    tturf_5358,    ROT0,   "Sega / Sunsoft", "Tough Turf (set 1, US, 8751 317-0099)", 0)
 GAME( 1988, wb3,      0,        system16b_8751, wb3,      wb3_5704,      ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 5, World, System 16B, 8751 317-0098)", 0 )
 GAME( 1988, wb34,     wb3,      system16b,      wb3,      generic_5704,  ROT0,   "Sega / Westone", "Wonder Boy III - Monster Lair (set 4, Japan, System 16B, FD1094 317-0087)", 0 )
diff --git a/src/osd/windows/debugwin.c b/src/osd/windows/debugwin.c
index 6373ec26850..febf33776cb 100644
--- a/src/osd/windows/debugwin.c
+++ b/src/osd/windows/debugwin.c
@@ -1401,9 +1401,10 @@ static LRESULT CALLBACK debugwin_view_proc(HWND wnd, UINT message, WPARAM wparam
 		{
 			if (debug_view_get_cursor_supported(info->view))
 			{
+				debug_view_xy topleft = debug_view_get_visible_position(info->view);
 				debug_view_xy newpos;
-				newpos.x = GET_X_LPARAM(lparam) / debug_font_width;
-				newpos.y = GET_Y_LPARAM(lparam) / debug_font_height;
+				newpos.x = topleft.x + GET_X_LPARAM(lparam) / debug_font_width;
+				newpos.y = topleft.y + GET_Y_LPARAM(lparam) / debug_font_height;
 				debug_view_set_cursor_position(info->view, newpos);
 				SetFocus(wnd);
 			}