rallyx: add note (nw)

src/mame/drivers/galaga.cpp

@@ -672,6 +672,8 @@ Notes:
 
 TODO:
 ----
+- bosco: is the screen horizontal resolution maybe 285? PCB videos do show a slightly
+  larger right border though
 
 - gallag/gatsbee: explosions are not emulated since the bootleg board doesn't have
   the 54XX custom. Should probably use samples like Battles?

src/mame/drivers/rallyx.cpp

@@ -180,6 +180,9 @@ TODO:
 - commsega: the first time you kill a soldier, the music stops. When you die,
   the music restarts and won't stop a second time.
 
+- rallyx: is the playing field area 221 pixels wide like with bosco? Currently
+  kludged with set_scrolldx(3, 3);
+
 - rallyx: Three things in the schematics that I haven't been able to trace:
   WR2, WR3 and RDSTB. Only WR3 is actually used by the game.