MLX

File Format
Name	MLX
Ontology	Electronic File Formats Error detection and correction MLX
Released	1983

MLX is a series of machine language entry utilities published by the magazines COMPUTE! and COMPUTE!'s Gazette, as well as books from COMPUTE! Publications. These programs were designed to allow relatively easy entry of the type-in machine language listings that were often included in these publications. Versions were available for the Commodore 64, VIC-20, Atari 8-bit computers, and Apple II.

MLX III v1.0 was released by COMPUTE!'s Gazette in 2026 and uses a Fletcher-style checksum algorithm to catch transpositions and distinguish between $00 and $FF bytes. It also features an efficient 10-byte-per-line format, balancing data density and ease of entry on a 40-column screen.

See also

• The Automatic Proofreader - COMPUTE!'s checksum utility for BASIC programs

Links

• Wikipedia article with full details
• MLX
• modified MLX (mirror)
• Article about MLX
• How Did Compute!'s Gazette’s MLX Program Work?
• How did Compute!'s and Compute!'s Gazette’s New MLX Work?
• Here's some Matlab/Octave code for your MLX simulator
• MLX 2 as BASIC and PRG
• The Automatic Proofreader 3.0 and MLX III v1.0 (COMPUTE!'s Gazette Jan 2026 pg 68)