Cassette Operating Software

H-8/H-88 Cassette Operating Systems. For using the H8/H89 with cassette tapes.

From the Spring/Summer 1982 Heath catalog:

  • Helps form a solid base for future computer programming
  • On audio cassettes, in convenient 1200 baud form. 

Convenience features make this system easier to use than others: Includes Extended Benton  Harbor BASIC (Version 6.0), HASL-8 Assembly Language (a two-pass absolute 8080 assembler), TED-8 Text Editor, BUG-8 Console Debugger. Features automatic command completion, dynamic syntax checking and a special user configuration feature.

Min. hardware, software requirements: H-8 or H-88 Computer with 16K bytes of RAM, cassette interface (see below) and ECP-3801A

H-8-18, for H-8/H-8-5/ECP-3801A systems, 11 pounds. .......... $30.00

H-88-18, for H-88/H-88-5/ECP3801A systems, 5 pounds. ....... $30.00


Last Modified: Wednesday, 16-May-2018 22:48:17 PDT

Contact Details

Mark Garlanger

Email: mark [at] garlanger [dot] com

If you email me, PLEASE check your spam filter for any responses.



This site is dedicated to preserving the history of the original Heathkit computers. They were initially release in 1977 and included the 8-bit H-8 and 16-bit H-11 systems. The H89 was released in 1979.