break on pdp11 serial ports
John Wilson
wilson at dbit.com
Fri Mar 30 11:10:02 CDT 2018
On Fri, Mar 30, 2018 at 05:46:14PM +0200, Sytse van Slooten via cctalk wrote:
>That's where the questions start. How did a DL-11 like interface signal the
>reception of a break?
NUL with a framing error.
>And how did the operating systems and software deal with it?
However it wanted! In some cases it was interpreted as a ^C.
>Was it actually used at all?
It's pretty rare to care about receiving them (except for bringing up
MicroODT on TT0:, but that's not what you're talking about). You'll want
to be able to send them if you're going to support TU58s though.
John Wilson
D Bit
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