Asynchronous Data Control

This document is an engineering specification for the KL8/E asynchronous data control unit (M8650 and M8650 YA boards). It covers general design descriptions, physical characteristics, environmental requirements, and communication settings including baud rates and interface types (20 milliampere or EIA/CCITT). It also provides detailed programming instructions for the KL8/E command set and instructions for configuring the board, including device code selection and stop bit selection using split lugs. The document concludes with parts lists for various KL8/E options and accessory components.