early PDP-11/45 info sought

Jay Jaeger cube1 at charter.net
Thu Jan 31 13:47:10 CST 2019


I have completed my transcription of what I felt would be the most
salient entries and information in those entries of the PDP-11/45
DEC-O-Logs.

Curiously, there were no entries at all for the KB11-D.

The transcripts are available on my Google Drive at

https://drive.google.com/open?id=0B2v4WRwISEQRWWFFdVpCZWFTZEU

under pdf/dec/fieldService/dec-o-log

Of course, they won't be 100% accurate, but I did take special care to
note areas where I had trouble making stuff out, and over signal names
and FCO cuts/adds where available.

Note/offer:  If someone has a good way to scan fiche, I could send (one
at a time) my JAN86 and JUL86 fiche sets (9 fiche) off to that someone
to scan/print.

On 1/27/2019 6:40 PM, Fritz Mueller via cctalk wrote:
> Those reading through the recent "PDP-11/45 RSTS/E boot problem" thread here will know that I've gotten to some corners of my 11/45 CPU now that don't match up with the commonly available engineering drawings.
> 
> My /45 is an early serial number (#152).  So far I've verified hardware differences on at least my M8100 and M8105 cards and spares, relating to parity error abort handling.  I would really like to track down any of the following resources:
> 
> - PDP 11/45 system engineering drawings *earlier* than those currently available on bitsavers (Jun '74)
> 
> - Any PDP 11/45 backplane wire list (what looks to be a wire list in the currently available engineering drawings is actually only a breakdown of the power harness.)
> 
> - PDP 11/45 ECO information, particularly the following:
> 
>     M8100  00003
>     M8103  00005
>     M8105  00005
>     M8106  00007, 00008, 00012, 00012A
>     M8110  00008
> 
>     KB11-A 00015
> 
> Bitsavers seems to have a DEC-O-LOG for M8105, but this does not contain specifics on cuts and jumps for ECO 00005, referring only to the associated "kit".  DEC-O-LOGs for the other processor boards are missing.
> 
> If anybody thinks they might have any of this info squirreled away anywhere, I'd really love to find out more about it!
> 
> Parts of the ECO's are pretty easy to figure, just by comparing the state of my existing boards to the '74 drawings.  But other parts not so much...
> 
>     thanks much,
>       --FritzM.
> 
> 
> 


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