I finally got my hands on a real Teletype and am trying to connect it the Altair clone. I know that there's some communication between the two as whenever I raise the STOP+AUX switches to enter the configuration menu on the Altair the Teletype does some chattering but it doesn't print the configuration menu. The Teletype has an powered (active) current-loop/RS-232 converter that can be set to DCE or DTE. I've got it set to DTE and am using one of the supplied serial cables that came with the Altair. If I switch to DCE and use a null-modem cable I also get the same chattering when I enter the configuration menu. If I use DTE and a null-modem cable or DCE and a straight-thru cable there is not even that limited communication.
I've got the Altair set Port 1 being a 2SIO port with RTS and CTS always asserted and the baud rate of 110 and I've tried 8N1 and 8N2 word sizes. Anybody know of any other settings I need to have to make the Teletype be the configuration terminal?
Gabriel Egan