I'm going to ask this here, and please direct me to any thread or forum that might better answer this question.
I have an original SIO2PC that I made.. 20 years ago? I want to test it, see that it works.
IS there an original circuit diagram that I can check my work against?
Does this software work with the original circuit? or what do I need to use? I have plenty of old PC/laptop hardware around with 9 pin serials.. I even have a T40 dock with a 25pin port (which is what I originally built it with)