Sprite Demo
A machine code sprite engine gets loaded, patched with address data at runtime, and repeatedly invoked to animate graphics in a tight BASIC loop.
SCREEN$
Extended SCREEN$
A machine code routine that supercharges the built-in SCREEN$ function to recognize UDGs, software graphics, and standard characters by their character codes.
Mike’s Notebook: CMPRES
If you are used to SAVEing SCREEN$ files, you may have noticed that the file size is rather large especially if you LOAD or SAVE using cassette storage medium. The file is 6912 bytes long. Another problem to overcome is that if you want to store morethan four or five SCREEN$’s in RAM memory, there