4.3 BSD stty stop and Graphon terminals

[99700000]

Using Graphon go-140 or go-100 terminals with our 4.3BSD system:
when we change the stop character from ctrl-S to something else
with the stty command, stty all shows the stop character changed.
Yet the new stop character doesn't stop input, and ctrl-S does.
How is this even possible? not to mention why does it happen?

With Qume qvt101 terminals and ADM3a terminals changing the stop
charcter works as expected: the new stop character stops input
and ctrl-S doesn't do anything.

haynes at ucscc.ucsc.edu
haynes at ucscc.bitnet
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