Rainbow 100 CP/M-86/80 Software Design and Maintenance Manual

This document describes the software design and system maintenance procedures for the CP/M-86/80 operating system, which is designed for the Rainbow 100 dual CPU computer. It covers system organization, cross-CPU communication between the Z80 and 8088 processors, BIOS operations, disk I/O routines, system disk generation instructions, and various software patches. The manual is intended to assist users and technicians in configuring, maintaining, and understanding the integration of the Z80 and 8088 processing environments.