SIMH DG Nova and real serial port
jws at jwsss.com
Sat Jan 31 05:39:47 CST 2015
On 1/31/2015 2:56 AM, shadoooo wrote:
> I'm developing a system similar to VTserver for PDP11, but for DG Nova
> The system uses a serial console connection and a Python back-end on
> the PC.
> Now I need to debug the binary code developed for the Nova, but I have
> to do it on
> an emulated machine on a PC.
> In other words, I would need to use SIMH connected to a real serial
> port: is it possible?
If you get the patch to work with SIMH to a tty port, Vmware ESXI server
supports connecting the emulated serial ports of two virtual machines
What I have rigged for many test setups if one machine running the
simulation out to what is a serial port on the emulated guest. Usually
use linux, as it is easier to see the real status of the serial ports
I then run the other guest with one of its serial ports connected to the
first guest's serial port.
i usually use a copy of a system called Pick which has serial ports for
expansion. It runs as one guest on the vmesxi system. It can support 2
serial ports, connected to another machine.
I then have a copy of linux running in another guest. I can use minicom
to connect to the Pick system remotely, since Pick only supports
connectivity via the console / keyboard and serial, no network stack.
Hope this might help. You won't have to experiment or debug on any
vintage hardware till you have it working on SIMH.
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