Chexsum
From Just Solve the File Format Problem
Chexsum is a type-in program checker for the Commodore 64 and 16, Amstrad CPC 464 and 664, Atari 130XE, and MSX used by Melbourne House Publishers.
It displays a four-digit checksum for each entered line.
It can sometimes see a '.' as a ',' and a ';' as a ':' if they fall on certain positions in a program line.
There are different versions in each book.
Sample Output
Links
- Commodore 64 Games Book pg 4 (alternate source)
- Commodore 64 Games Book 2 pg 7 (alternate source)
- Commodore 64 Machine Language for the Absolute Beginner pg 176
- Commodore 16 Games Book pg 16
- C16 PRG file
- MSX Games Book pg 6
- Amstrad Games Book pg 3
- Writing Adventure Games on the Amstrad pg 155 (alternate source)
- Atari 130XE Games Book pg 3 (alternate source)
