21 May
2014
21 May
'14
4:23 p.m.
On Wed, May 21, 2014 at 5:02 PM, David Gesswein <djg at pdp8online.com> wrote:
Actually you need to be configured with 2 stop bits to
be compatible with
an ASR33. You actually want to be compatible with your M8655 so check
the stop bit jumper on your board to see if it is set to 1 or 2. Anything
other than a real ASR33 normally uses 1 stop.
Some other (less common) electromechanical terminals need 1.5 stop bits.
IIRC that was common with five-level comms. It's generally safe to
configure a UART for two stop bits even if the device you're communicating
with only needs 1 or 1.5, because transmitting longer/more stop bits is OK,
and on the receive side, almost all UARTs will accept a single stop bit
even when they're configured to transmit 1.5 or 2.