// Video stuff (should go in tom.h?)
-#define VIRTUAL_SCREEN_WIDTH 320
+// NB: This virtual width is for PWIDTH = 4
+//#define VIRTUAL_SCREEN_WIDTH 320
+#define VIRTUAL_SCREEN_WIDTH 340
#define VIRTUAL_SCREEN_HEIGHT_NTSC 240
#define VIRTUAL_SCREEN_HEIGHT_PAL 256