Added tmdfs mode 4 for 2x 640x480 monitors

Gameleap/code/mw4/Code/MW4/MW4Shell.cpp

@@ -14820,6 +14820,10 @@ void __stdcall CTCL_UpdateMechView()
 				mfd_device.BeginScene();
 			    sh_step = 4;
                 break;
+		    case 4:
+			    // Same 7-step cadence as mode 1.
+			    sh_step = 6;
+			    break;
             }
         }
 		else

Gameleap/code/mw4/Code/MW4Application/MW4Application.cpp

@@ -1440,7 +1440,7 @@ int WINAPI WinMain( HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, int n
 	if (token && token[7])
 	{
         int n = atoi(&token[7]);
-		if ((0 <= n) && (n <= 3)) // 0 - no MFDs, 1 - orginal(5+1=dual & single), 2 - B&W(3 + 1=1 dual), 3 - color(3 + 1=2 dual)
+		if ((0 <= n) && (n <= 4)) // 0 - no MFDs, 1 - orginal(5+1=dual & single), 2 - B&W(3 + 1=1 dual), 3 - color(3 + 1=2 dual), 4 - split dual 640x480
 			g_nTypeOfMFDs = n;
 	}
 	token = strstr(all_lower, "-trio ");