Calling all retro-computing collectors and Apple fans! Up for sale is a rare, physical assembly source code listing for FORTH Release 1.1, specifically ported to the Apple 1 architecture.

This document (ca65 V2.9.2) was translated from the original FIG (FORTH Interest Group) model and modified by W. K. Rodiger in 2003 to run on the Apple 1. It includes detailed memory assignments, machine registers, and disk parameters.

• Condition: Excellent vintage condition; clean pages with standard 3-hole punch.

• Content: Detailed assembly code for 6502 architecture, including sector sizes, buffer magnitudes, and data stack configurations.

• Perfect for: Vintage computer collectors, Apple 1 enthusiasts, or anyone interested in the history of programming languages.

A great piece of history for your collection or a unique gift for a tech historian!