RC11 manuals / schematics online?

Paul Koning paulkoning at comcast.net
Sat Jun 10 21:35:52 CDT 2017

> On Jun 10, 2017, at 4:59 PM, Mattis Lind via cctalk <cctalk at classiccmp.org> wrote:
>> ...
> BTW. Speaking of dumping. Now that I have a TC11 / TU56 that seems to be
> working, what is the best way to dump 18 and 12 bit tapes? Is there some
> PDP-11 OS that can do it or is it assembly programming required? I had
> hopes that RT11 had such features but it doesn't seem like it could read
> all 18 bits.
> Has this already been done? Maybe I can spend time on other things than
> re-inventing the wheel...

RT-11 FILEX can read TOPS-10 format DECtapes.  I don't remember if it does PDP-8 DECtapes, that's a bit harder because the block size is different.

If you want a raw block by block dump, I don't know about tools for that, though a look at the FILEX source code should give you some ideas.  Or the tape formatter code, for that matter; the basic idea is to put the RALL function to work.

John Wilson might have some ideas.


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