Private company

The Byte Works

Software business1

The Byte Works, founded and run by Mike Westerfield, was a key player in the history of developer tools for Apple II computers. Its first product, the ORCA/M assembler (Object Relocatable Code Assembler for Microcomputers, and also MACRO spelled backwards), developed jointly by Westerfield and Phil Montoya, was a powerful assembly language development environment, complete with a Unix-style shell, which ran on 8-bit Apple II computers.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

The Byte Works, founded and run by Mike Westerfield, was a key player in the history of developer tools for Apple II computers. Its first product, the ORCA/M assembler (Object Relocatable Code Assembler for Microcomputers, and also MACRO spelled backwards), developed jointly by Westerfield and Phil Montoya, was a powerful assembly language development environment, complete with a Unix-style shell, which ran on 8-bit Apple II computers.2

Sources

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