oddball televideo problem

From: Tom Jennings <tomj_at_wps.com>
Date: Wed Jan 14 19:46:43 2004

You might try other keyboard characters. Basically 'autobauding' guesses
bit rate by looking at the garbage in the UART Rx buffer (and sometimes
status flags). But incorrect parity since it's on the "far" end of the
character (I think) might trump all character patterns and look the same
to the autobaid code.



On Wed, 2004-01-14 at 13:22, Jay West wrote:
> I have a system that does an "autobaud" when you hit return to log in. If I
> hook up a VT220, it works at 7/1/E, 8/1/N, 7/1/O, etc. etc. no problem. If I
> hookup a Televideo 950, hitting return gets no response at all. This is NOT
> a DTE vs. DCE problem, because the televideo does work with the same system
> on a different type of serial port.
>
> I was thinking something might be brain damaged with parity
> generation/checking on this terminal. Is this a known issue of TV950's?
> About the only way I can find out whats going on is to dig out my datascope
> and see the start data & stop bits between the two when hitting return and
> see what is different.
>
> Any thoughts?
>
> Jay West
>
> ---
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Received on Wed Jan 14 2004 - 19:46:43 GMT