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