[Simh] VAX PSI

[Ethan Dicks]

On Fri, Mar 20, 2020 at 8:05 AM Peter Allan <petermallan at gmail.com> wrote:
> Mention of VAX-2780-3780PE piques my interest. I have a long term desire to be able to connect a simulated VAX (or even better, a PDP-11) to a simulated IBM mainframe (using Hercules) and use the VAX/PDP11 as a remote job entry system for the IBM. Has anyone tried to do this?

I used to do it for real with real hardware (MC68000-based serial
board with sync interface to IBM side and DMA interface to Unibus,
Qbus, or VAXBI machine on host side plus application software).  I
have not tried to do anything similar in the world of emulation.

We used to use the COM5025 or the Zilog Z8530 in sync mode for serial
comms.  This is definitely an interesting aspect of the process to
emulate.

-ethan