64x48 or 64x64?

Information mapping of the 64 bits (aka: what do the bits store in them?)
Variable depending on current part of code, but mainly the first 8-16 keep track of drawing positions and for loops with occasional help from the last 8. bit 24 is used to differentiate pressing and holding spacebar. bits 25-47 are reserved for things the player has done and which location, once I can get the game actually working.

Genre of the game
Visual Novel style adventure game