[Simh] DLI losing upper bit

Paul Koning paulkoning at comcast.net
Thu Jun 25 10:28:15 EDT 2020


I'm trying to use a SIMH PDP11 "DLI" device for DDCMP.  That requires 8 bit transparent data, of course.  It's not working.

A trace shows that the simulator is stripping the upper bit on received bytes.  The console has a command to tell it not to do that (set tti 8b).  But while there is "set dlo 8b" there is no "set dli 8b".

Is there a way to get DLI not to corrupt data?

	paul



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