PDP-11 Unix V7M-11 V1.0 under SIMH

[Warner Losh]

On Tue, Oct 5, 2021 at 7:04 AM Paul Koning via cctalk <cctalk at classiccmp.org>
wrote:

>
>
> > On Oct 4, 2021, at 9:47 PM, Ethan Dicks via cctalk <
> cctalk at classiccmp.org> wrote:
> >
> > On Mon, Oct 4, 2021 at 7:42 PM Chris Zach via cctalk
> > <cctalk at classiccmp.org> wrote:
> >> Oddly enough I do have a copy of Pro/Venix 1.0 that would fit on a
> >> Pro/350 with a 5mb hard drive. Slow as *dirt*, you could literally watch
> >> the hard drive seek back and forth with the little arm on the side. But
> >> it did work.
> >
> > I have one of those.  I brought it to VCF East two years ago for the
> > Mother of all UNIX Demos.  I think there's 300-400KB free on that
> > RD50.
>
> I wonder if it supports at least an RD51, since those arrived together
> with the RD50.
>

The initial DEC Rainbow port of Venix did not, though the later Boston
Software Works enhancements did. Venix 2.0R only supported RD50.


> > It is indeed slow as dirt.
>
> Chances are it would be noticeably faster with an MFM emulator connected.
>

My Rainbow certainly is for similar disks.The MFM emulator isn't exactly
speedy, but it's at least a bit faster than the real disks it replaced.

Warner