DDCMP sync?

Peter Coghlan cctalk at beyondthepale.ie
Tue Jan 26 12:24:13 CST 2021


I wrote:
>
>>
>> The other option would be synchronous links, which would enable connections
>> to DMC11 or the like at speeds up to 1 Mb/s.  But synchronous comm devices
>> that connect to modern computers aren't so easy to find, though I have seen
>> a few.
>> 
> 
> Not what would be called modern these days but I managed to run across two
> MicroVAX 3100 machines with DST32/DHT32 synchronous serial interfaces in them
> plus two V.24 and one each of V.35 and X.21 cables that will plug into them.
> With some help from the people here, I managed to get the machines talking to
> each other using a null modem between the two V.24 cables.  I also have two
> nearly identical syncronous modems, one with a V.35 interface and another with
> an X.21 interface but I have not managed to get these to talk to each other,
> probably because they can't be configured to match any of the speeds the
> DST32/DHT32 interfaces can do.
> 

Forget I said anything. the DST32/DHT32 won't do anything like 1 Mb/s.
Why do you want to go so fast?

Regards,
Peter Coghlan.


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