I used NetMate by Roger Taylor as the terminal program on the CoCo 3, with a Deluxe RS-232 Pak connected to my PC via a DB25-to-USB cable running a custom build of TCPSer for the modem bridge. It took a lot of trial and error, but I finally got it to dial out at 19200 baud. Definitely a labor of love.
I published a small Windows utility called RetroModem Bridge.
It is a serial-to-TCP bridge for vintage computers that can be used to connect to Telnet-accessible BBSes. I wanted something simple with a Windows UI for selecting the COM port and baud rate.
It worked for my setup using a CoCo 3, Deluxe RS-232 Pak, USB-to-serial adapter, Windows PC, and NetMate. It should also work with other retro computers that can communicate over serial with a terminal program.
GitHub:
https://github.com/tequestafarian/RetroModemBridge submitted by /u/tqdomains [link] [comments]