View Full Version : Connecting ASR-33 Teletype to MITS Altair 2SIO

July 20th, 2009, 04:40 PM
I have an ASR-33 (20 mA Current Loop) that I'd like to connect to an Altair 2SIO. Right now, I can print from the computer to the TTY but can't type on the TTY's keyboard. Has anyone here been able to use this combo? If so how did you wire it up?

Thanks for any help you might give!

Tom Lake