My ultimate goal is a bit different, but the issues I am having persist all the way down to the most basic level. ProTERM 3.1 is not properly receiving data from the serial port. I have it configured for SSC in Slot 2. Baud rate is 9600, 8 bits, no parity, 1 stop bit. Using the Null modem driver, with a null modem cable.
I have it connected to the terminal program on my Tandy Model 102 configured the same way. The Tandy is receiving clearly all the characters sent from the Apple II, but the Apple II receives nothing from the 102.
However, using Modem.MGR everything works fine, and data goes both ways. Is there something I'm missing in ProTERM?