Description: Original 1977 technical manual and instructional guide produced by Ithaca Audio. This document provides essential circuit descriptions, assembly instructions, and operational guidance for their early S-100 bus modules, specifically focusing on Z-80 CPU and EPROM board configurations. The manual features detailed typewritten technical specifications and comprehensive logic diagrams, serving as a primary source for mid-20th century microprocessor engineering.

Manufacturer: Ithaca Audio (Ithaca Intersystems)

Manufactured In: USA

Condition Description: This is an original vintage document featuring factory three-hole punches for binder storage. The pages show minor age-related tanning but remain crisp and free from significant tears. The typewritten text and schematics are fully legible.

True Condition: See pictures for true condition.

Model Number: 1977 Revision

Extra Notes: Ithaca Audio was renowned for high-reliability board designs. Original 1977 manuals from this company are scarce and highly prized by collectors of the S-100 Ithaca Intersystems ecosystem.