One fun thing you can do with an Atari XL/XE is move the ROM BASIC into RAM. And once it is in RAM you can modify it with the POKE command.
In Compute! November 1985 Reader Comments, there was a short program to copy BASIC to RAM, which also patches the Rev B BASIC to be Rev C.
There were three revisions of Atari BASIC, Rev A, B and C. Rev A was shipped o…