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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal> With all this social distancing and staying home, I’ve been dusting off old hardware and fixing it up. I just finished running diagnostics on a nice little PDP-11 system. It is a -<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> PDP-11/53+ with 3.5Mb RAM in a BA123<o:p></o:p></p><p class=MsoNormal> KDA50 and 2xRA73 drives<o:p></o:p></p><p class=MsoNormal> DELQA NI<o:p></o:p></p><p class=MsoNormal> CXA16 16 line mux (DHV11 clone, more or less)<o:p></o:p></p><p class=MsoNormal> TQK70 and TK70 (probably worthless – those things never work)<o:p></o:p></p><p class=MsoNormal> SQ739 SCSI controller (does both MSCP and TMSCP!)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> I figure I’ll use the SCSI for a CDROM and a tape drive, maybe an Exabyte. Don’t really need more disk space with two RA73s already, and I’m sure the SDI is faster than the SCSI.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> So, the question is, what OS should I put on it? RSX or RSTS? It has to be something that can make good use of the hardware.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> No Unix, please – I’ve already got a nice 11/83 with 2.11bsd on it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> Ideas?<br><br>Bob<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>