[rescue] Screw (software) emulators!

[Dave McGuire]

On August 20, dave at cca.org wrote:
> >> > Well, if one is really into masochismus type things, Dennis Ritchie was
> >> > looking for any V1 unix bits still extant.  He has uncovered a few.
> >> > I wonder if it might be possible to recreate the V1 UNIX on one of
> >> > these ``new'' pdp8 thingies.....(:+}}...  That would be a gas....
> >> 
> >> Cancel that... the V1 was on a PDP-7, and not a PDP-8....., oh, well....
> 
> >  [ok, I'm behind on my email...so sue me]
> 
> >  Unless my memory is suffering from severe bit rot, the pdp7 and pdp8
> >share the same instruction set.  One might need to concern oneself
> >with IOTs and such, but the base code should run.
> 
> You're probably thinking of the PDP-5, the first of DEC's 12-bit line.
> 
> The PDP-7 was an 18 bitter. (PDP-1, 4, 7, 9, 15)
> 
> The 12 bitters were PDP-5, 8, LINC, LINC-8, 12. 

  Ahh, got it.  Thanks for the correction.  I don't own any pre-8
PDPs.  Yet. :)  I must have been thinking of the pdp5.

     -Dave

-- 
Dave McGuire
Laurel, MD