Other PDP11 simulators

From: Ron Hudson <ron.hudson_at_sbcglobal.net>
Date: Sat Oct 2 10:56:29 2004

On Oct 2, 2004, at 4:55 AM, Gordon JC Pearce wrote:

> Zane H. Healy wrote:
>>> Are there any PDP11 simulators that run "right down on the iron" of
>>> a PC?
>>>
>> As far as I know, there isn't anything that runs directly on the PC
>> hardware, they all require an OS. However, John Wilson mentioned
>> something this week on the PDP-11 mailing list that sounds like he's
>> planning on running directly on the PC HW in a future version.
>
> You *could* write one that just booted up and became a PDP-11
> emulator. It would be quite a lot of work - serial ports are easy to
> program, and you could get away with BIOS calls for disk handling
> maybe, but you could basically forget about any kind of network
> support. Far simpler to use one of the free Unixes. If you were
> really, really concerned about not letting anything else run on the
> machine, you could say something at a Linux kernel boot prompt like:
> boot: linux init=/usr/bin/simh
>
> and simh would run in single-user mode. This would, of course, be
> silly.

why silly? if it would work.


>
> Gordon.
>
Received on Sat Oct 02 2004 - 10:56:29 BST