Brian, Thank you for the clarification. I obtained the MP3 of the DOS installation, as well as mComm. I have it installed on a Windows 10 machine (after the antivirus resolved its reservations) and have Linux and Android OSs to experiment with as well.
I do have the cassette cable and also have USB-to-serial converters and null modem cables, although I'm not sure how well they conform to specification. I'm sure one way or another I'll get this going. But I really ought to get busy building the REX; I bought the pieces last year but got busy with other projects thereafter. Thanks again for your contribution. -CH- <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
