[HECnet] ANF10 network --> DN200 (RJE, Decnet) --> should be Ddcmp --> Re:4 --> Cryptic -->Dup11 simh only for Ddcmp --> update

[Paul Koning]

> On Nov 19, 2021, at 3:08 PM, R. Voorhorst <R.Voorhorst at swabhawat.com> wrote:
> 
> Before I get a storm this from Pdp11_dup.c should accompany it:
> 
>   The wire protocol implemented is native DDCMP WITHOUT the DDCMP SYNC 
>   characters both initially and between DDCMP packets.

That seems to be sufficient for how the dup/kmc machinery uses the link.  But if you want to emulate a generic DUP driven directly by the host, you do need at least one SYN character between frames, otherwise a request to enter SYN search mode would not work.

	paul