Deciphering PDP-11/05 ZQKC (Instruction Exerciser) MAINDEC failures...

[Josh Dersch]

On Mon, Nov 9, 2015 at 12:37 PM, Jay Jaeger <cube1 at charter.net> wrote:

> On 11/8/2015 11:50 AM, Josh Dersch wrote:
>
> >
> > Anyone have any experience with this particular diagnostic?
> >
> > Thanks,
> > Josh
> >
>
> The version can normally be identified either by the file name or on the
> paper tape if you are using a real paper tape.  My guess is that the
> version you are running does not match the PDF.
>
> Some of us also have diagnostic listings of various versions, and have
> some of them on Microfiche.  Unfortunately, I do not seem to have a
> listing for DZQKC (any revision).  [It isn't missing - it isn't even
> listed in the fiche index.  :( ]
>
> HOWEVER, I *DO* have a *paper* listing of revision E (among others).
> The code starting at 16002 reads
>
> 016002  105737 177564      TSTB @#TPS
> 016006  100375             BPL  .-4
> 016010  006237 177564      TSTB @#TPS
> 016014  000001             WAIT          ; WAIT FOR FIRST INTERRUPT
>
> The routine starts at 015734 and the comment is ";CHECK TTY INTERRUPT"
>
> AND, the paper copy has a red stamp indicating that a change may be
> required for it to operation.
>
>   LOC  FROM     TO
>  2266   200     340
> 14146   200     340
> 16164  5227    4737
> 16166     0     160
>
>  160      -     5227
>  162      -        0
>  164      -     1375
>  166      -      207
>
> So, please provide either the complete file name you loaded (if you are
> loading from RX, hard disk, DECTape, etc., or the complete information
> on the paper tape and we should at least be able to help you figure out
> if they match, or not, and whether or not someone has a listing that
> matches and can tell you what the error might mean, and perhaps provide
> a scan to you (and bitsavers).
>

Thanks, I should have thought to check the revision codes in the first
place.  Looks like the Bitsavers docs are from revision C; I've been
running the paper-tape version that's on Bitsavers (
http://bitsavers.informatik.uni-stuttgart.de/bits/DEC/pdp11/papertapeimages/20031230/tray4.txt),
which is labeled as "maindec-11-dzqkc-e-pb" which looks like it should be
Revision E (which is fortunate!).

If you do have the ability to scan this, I'd love to see it.

Thanks,
Josh



>
> JRJ
>
>
>