Prevent crashing when having too many lines

mednafen/psx/gpu.cpp

@@ -1456,11 +1456,21 @@ int32_t GPU_Update(const int32_t sys_timestamp)
          }
          else
          {
-            const unsigned int FirstVisibleLine =
+            unsigned int FirstVisibleLineTemp =
                GPU.LineVisFirst + (crop_overscan == 2 ? GPU.VertStart : (GPU.HardwarePALType ? 20 : 16));
-            const unsigned int VisibleLineCount =
+            unsigned int VisibleLineCountTemp =
                (crop_overscan == 2 ? (GPU.VertEnd - GPU.VertStart) - ((GPU.HardwarePALType ? 287 : 239) - GPU.LineVisLast) - GPU.LineVisFirst : GPU.LineVisLast + 1 - GPU.LineVisFirst); //HardwarePALType ? 288 : 240;
 
+            if (VisibleLineCountTemp > (GPU.HardwarePALType ? 288 : 240))
+            {
+               FirstVisibleLineTemp =
+                  GPU.LineVisFirst + (GPU.HardwarePALType ? 20 : 16);
+               VisibleLineCountTemp =
+                  GPU.LineVisLast + 1 - GPU.LineVisFirst; //HardwarePALType ? 288 : 240;
+            }
+            const unsigned int FirstVisibleLine = FirstVisibleLineTemp;
+            const unsigned int VisibleLineCount = VisibleLineCountTemp;
+
             TIMER_SetHRetrace(false);
 
             if(GPU.DisplayMode & DISP_PAL)

parallel-psx/renderer/renderer.cpp

@@ -824,7 +824,7 @@ Renderer::DisplayRect Renderer::compute_display_rect()
 			upper_offset = 0 - render_state.slstart;
 		}
 	}
-	else
+	if (render_state.crop_overscan != 2 || display_height > (render_state.is_pal ? 288 : 240))
 	{
 		if (render_state.is_pal)
 		{

rsx/rsx_lib_gl.cpp

@@ -1622,7 +1622,7 @@ static GlDisplayRect compute_gl_display_rect(GlRenderer *renderer)
             y = renderer->last_scanline - 239;
         }
    }
-   else
+   if (renderer->crop_overscan != 2 || height > (renderer->config.is_pal? 288 : 240))
    {
         if (renderer->config.is_pal)
         {