Can someone with knowledge of Windows internals tell me if the MODE
command (or the API equivalent) uses data type INTEGER for the number
of stop bits on a serial port?
We know that the baud rate is type integer - thus a serial port being
used for RTTY actually operates at 45.00 baud (+/- system or UART clock
accuracy). However, my testing with several UART boards seems to show
operation predominately with either 1 or 2 stop bits and I'm beginning
to suspect an OS limitation.
The microHAM UART in DK II, MK II, MK2R+ and micro2R avoids an OS issue
by aliasing 45 baud to 45.45 and always using 1.5 stop bits for 5 bit
codes.
73,
... Joe, W4TV
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