k-Pack Posted August 28, 2016 Share Posted August 28, 2016 (edited) I have 2 - db9 male to db25 male, 850 to Hayes compatible modem cables. The pins are connected different on each. I'm thinking I know which one is wired correctly but need someone to help me feel confident about my decision. These are the pin connections 850 R1: Gray cable Black cable Pin# Pin# Pin# 1 20 6 2 8 8 3 2 2 4 3 3 5 7 7 6 6 20 7 4 4 8 5 5 The 6 and 20 pins on the modem side are reversed. Any thoughts? Edited August 28, 2016 by Pack007 Quote Link to comment Share on other sites More sharing options...
Fuji-Man Posted August 28, 2016 Share Posted August 28, 2016 (edited) Gray cable probably. http://www.atarimania.com/faq-atari-400-800-xl-xe-what-is-the-atari-850-interface-module_38.html Edited August 28, 2016 by Fuji-Man Quote Link to comment Share on other sites More sharing options...
k-Pack Posted August 28, 2016 Author Share Posted August 28, 2016 Thanks. The pain has stopped. Quote Link to comment Share on other sites More sharing options...
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