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Book 0 — Using Atom ​

This short book shows how to run Atom, a single-pass Z80 assembler. Choose the CP/M or Node section for the commands and setup that match your system.

CP/M ​

Use ATOM.COM on a CP/M computer, or try the same steps in Triptych.

Using Atom on CP/M

Node ​

Install the Node command, assemble source and choose output files.

Using Atom on Node


Atom Book 1 — Assembler Reference ​

Source syntax, symbols, expressions, Z80 instructions, data directives and source composition. Directive, expression and capacity tables accompany the chapters.


Atom Book 2 — Z80 Programming ​

Starts at the CPU, memory and raw opcodes, then develops assembly language, flags, loops, tables, subroutines and I/O. Five final chapters apply those tools to arithmetic, sorting, strings, packed flags and recursion.


Atom Reference Tables ​

Directive, expression, limit and Z80 instruction tables, with the Node command reference and programming interface.