2.11 BSD on an 11/93 with an CMD SCSI Module

Charles Dickman chd at chdickman.com
Mon Mar 18 20:23:50 CDT 2019


Bill,

Here's the patched boot loader that you need.

http://www.chdickman.com/pdp11/rauboot.s

The rest is an exercise for the student. :-) Its about the journey, not the
destination, otherwise we would be somewhere else.

I have to say that it took a lot of patience to get 2.11BSD running on my
first PDP-11/73. I think it was about 3 years before I was able to get the
parts together and figure out the method. SIMH didn't have MSCP support and
there was a bug in ra boot loader that took a while to fix.

Chuck


On Sat, Mar 16, 2019 at 6:42 PM Bill Gunshannon via cctalk <
cctalk at classiccmp.org> wrote:

> On 3/16/19 3:12 PM, Al Kossow via cctalk wrote:
> >
> >>> Now I need a program that can move Tape data back and forth between
> >>> real drives and tap/tpc images.  Anybody got one?
> >
> > https://github.com/brouhaha/tapeutils
> >
>
> I just took a quick glance but somehow I doubt that's going
> to compile or run on a PDP-11.  :-)  u32?
>
> I grabbed a copy.  I am willing to try almost anything.  :-)
>
> bill
>
>


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