> 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