Do you have flow control (Xon/Xoff) enabled both on the terminal and on the VAX?
You might try a slower speed to see if that makes a difference. It shouldn't, but it might give more information. Is autobaud enabled on the line? You might turn that off and set the speed and related parameters explicitly. paul > On Dec 5, 2017, at 12:56 PM, Peter Allan <petermal...@gmail.com> wrote: > > I am trying to get a real VT420 terminal working with a simulated micro VAX > 3900. However, I am having problems getting text displayed on the screen of > the VT420. > ... > Once the microVAX has booted, if I hit Enter on the VT420, then I can see > that a login process starts on the simulated microVAX, but all I see on the > screen of the VT420 is a few garbage characters. Despite that, when I type a > username and a password, I do get logged into the simulated microVAX. Any > commands that I type on the keyboard of the VT420 appears on the screen of > the VT420 (except the password, of course), but anything that the microVAX is > sending to the VT420 appears as garbage. There are recognisable characters, > but if I TYPE a file, even a small one, what appears seems to be every 7th > character from the file starting with the first character. The output of > commands such as DIR appear to have the same problem. ... _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh