[Simh] pdp11 - console input with high bit set

[Johnny Billquist]

On 2020-07-24 20:28, David Gesswein wrote:
> On Fri, Jul 24, 2020 at 06:12:17PM +0000, Paul Moore wrote:
>> Not helped by not knowing what KSR really means.
>>
> 
> Keyboard send receive. A model 33 teletype without paper tape.
> ASR was the model with paper tape, Automatic send receive.
> 
> DEC used teletype's that generated mark parity. From the manuals keyboards were
> available to generate other parity. A reasonable amount of old code for
> PDP-8's assumed mark parity. Later code ignores the upper bit.
> 
> I thought the high bit setting would be turned off if you used set tti 7b or
> 8b but never verified.

Which obviously won't help if the software running inside simh then 
expects MARK parity...

   Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol