With a Hex wordprocessor one edits a savegame (* kdr).
changing you at the positions " 56h " & " 60h " the available
values in " ff " over.
After you loaded the changed savegame, 255 shot and life
is to you at the disposal, although only 99 or 9 is displayed.
By the way:
In order to increase the number of bombs, you proceed as
described, only you set the value at position " 58h " on " 0C ".