[HECnet] native Dup sync line revisited --> preliminary tests reveals problems --> test setup?

[Johnny Billquist]

Well. That is the point that the DUP11 device in simh supposedly does 
framing and stuff. But Paul isn't seeing that, so the curious question 
is how the data is coming out verbatim, while the simh code suggest it 
shouldn't.

   Johnny

On 2021-12-23 13:54, R. Voorhorst wrote:
> I think he did both M= to M+ as to PyDecnet, but the sentence " I don't understand this because the code is clearly there in the emulator, so apparently it's not being hit."is intriguing ... :)
> 
> Reindert
> 
> -----Original Message-----
> From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Johnny Billquist
> Sent: Thursday, 23 December, 2021 11:26
> To: hecnet at Update.UU.SE
> Subject: Re: [HECnet] native Dup sync line revisited --> preliminary tests reveals problems --> test setup?
> 
> Certainly sounds like Paul was doing M+ to PyDECnet. Not sure what more combinations he might have been playing with.
> 
>     Johnny
> 
> On 2021-12-23 10:14, R. Voorhorst wrote:
>> Hi Paul,
>>
>> How was this tested: 11M+ to 11M+ or 11M+ to PyDecnet?
>>
>>
>> Reindert
>>
>> -----Original Message-----
>> From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On
>> Behalf Of Paul Koning
>> Sent: Thursday, 23 December, 2021 02:36
>> To: hecnet at update.uu.se
>> Subject: Re: [HECnet] native Dup sync line revisited --> preliminary
>> tests reveals problems
>>
>>
>>
>>> On Dec 13, 2021, at 9:15 AM, Paul Koning <paulkoning at comcast.net> wrote:
>>>
>>> ...
>>> So if the plain sync device emulation were to do the above, that
>>> would
>> give us an emulation that interoperates with the DMC emulation if the
>> software controlling the device is running DDCMP.
>>
>> More on this...
>>
>> I built an M+ system with DUP lines, and unlike what was reported in
>> this thread, I did NOT see problems talking to other things (like
>> PyDECnet or DMC
>> emulation) that expect plain data without frame length fields.  I
>> don't see frame lengths in the trace.
>>
>> I don't understand this because the code is clearly there in the
>> emulator, so apparently it's not being hit.  Not by DECnet/RSX anyway.
>> More to be studied.
>>
>> 	paul
>>
> 

-- 
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