Re slow stop to Xoff command.

I thought that might be a problem, but in using a serial protocol monitor I don't see that issue.  I see multiple Xoffs  going to the host computer and in those cases when it doesn't seem to respond to Xoff, it never stalls its output, it just goes on like it never saw an Xoff.  In cases (combo of OS and USB-Serial bridge chip) where the XonXoff does work, the output stops in less than 3 chars, even at 19200..

On Fri, Dec 10, 2021 at 10:03 PM Harold Hallikainen <harold@w6iwi.org> wrote:
From the schematic, it looked like it was originally a PIC chip (port
names, ICSP, etc.).

On Xon/Xoff, is it possible that it does eventually work, but there is a
delay? I've seen some systems respond to Xoff by stopping putting stuff in
the transmit FIFO, but the FIFO continues to be transmitted. Then there
were the early UART chips (I think the AY5-1013 and 6402 did this) where
CTS going false immediately stopped transmission, including in the middle
of a character.

Nice work!

Harold
https://w6iwi.org


______________________________________________________________
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys@mailman.qth.net

>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to ad7i@ad7i.net