[GreenKeys] TTY Model 33 ASR TZ in LOCAL mode

[Michael Zahorik]

I have my keyboard in pretty good shape. I checked all the key codes with my scope and found that they all were correct, except that the 8th code bit was changing. I had read somewhere that the 8th bit should always be a one. Then Dave Tumey told me that if my keyboard has an ESCAPE key instead of an ALT key, the 8th bit is parity and he was correct. My keyboard is set up for EVEN parity and is doing it correctly. 

Today, I stopped at a local printer shop, which also has a old guy that still works a few hours a week on typewriters. I asked him if he had a replacement ribbon for my TTY. He didn't, but was able to re-thread my spools with a new ribbon. This morning I tested it out and my typing unit is working pretty good. See picture. The only key that doesn't work is the carriage return. So, I'll have to look into that, any suggestion would be helpful. Anyway Thanks everyone for the help.
 Mike Zahorik (414) 254-6768
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