> On Mar 16, 2018, at 11:51 AM, Al Kossow via cctalk <cctalk@classiccmp.org> 
> wrote:
> 
> https://www.ebay.com/itm/1372243559202
> 
> basic.p11
> syslod.p11
> rdt.p11
> 
> all from mid 1971
> original RSTS?
> 
> hope the person who got these knows what they bought

"P11" was the extension used for PDP-11 assembly files very early on.  I assume 
that was because they were cross-assembled on a PDP-10.  Presumably PALX11.MAC 
which is on one of the other tapes!

One of the tapes seems to be a SNOBOL implementation, with LOW and HGH and SHR 
extensions which sounds vaguely familiar from long ago when I briefly used 
TOPS-10.

Another has SIMX11.SAV, wonder if that might be MIMIC.  That would be quite a 
find.  And on the same tape IOX.P11, that sounds like the early "papertape I/O 
executive".

One tape is labeled "New PS/8". 

BASIC.P11 could be the RSTS BASIC code, that too would be a very interesting 
discovery with that date.  SYSLOD is the DOS installer.  RDT I don't recognize.

I'm seriously looking forward to seeing image files of those tapes.  

        paul

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