::::::Erm, you actually need numbers 1 to 4 to constantly switch between weapons mid-game, just like in Livingstone I pressume. Of course the virtual console games don't require this number-key mappings since they're, well, console games.
::::::About having direct access to the cursor keys, it makes it possible to handle the BIOS menus without having to switch between joysticks. The more user friendly this (or any) emu can get, the better.
== Intro Screen ==