Atom

Atom is a single-pass Z80 assembler. Its core runs as a Node command and as ATOM.COM on CP/M 2.2. The assembler language is shared; the way you install, invoke and run it depends on the host.

Start here

• Book 0 — Using Atom covers both ways to run Atom: natively on CP/M, or from a Node command line.

Learn the assembler

• Atom Book 1 — Assembler Reference defines the source language, symbols, directives and output model.
• Atom Book 2 — Z80 Programming develops Z80 programs, from registers and opcodes through routines and algorithms.

Book 0 links to the Node command reference and programming interface. Books 1 and 2 cover the assembler language and Z80 programming.

Project resources

• Atom on npm provides the Node package and release history.
• Atom source contains the assembler, Node host and the CP/M program.