c64_proof

Compute! C64 Basic Proofreader

See: https://archive.org/details/computes-programming-the-commodore-64-the-definitive-guide-revised-edition/page/570/mode/2up

Program provides a line checksum for entering programs from Compute! magazines.

Code is in lower case, for pasting into Vice! Emulator, which will translate into uppercase characters.