RX02 / DSD440 problem

From: Jerome Fine <jhfine_at_idirect.com>
Date: Tue Feb 26 18:00:58 2002

>Andreas Freiherr wrote:

> Sounds much like some kind of "turnkey" system that automatically
> executes a ROM-based boot routine upon power-up. Depending on what ROM
> that is (there are several options), you may be able to change the unit
> number by moving some jumper or DIP switch on the CPU board (which
> module no, in terms of Mnnnn?) or a separate board (ISTR there is
> something like a bootstrap/terminator module)? - Maybe I can find out by
> the halt address (173326).

Jerome Fine replies:

I seem to remember someone saying that the DSD 440 reads block zero
of drive zero on power on, then times out and jumps to location zero
to start.

> Anyway, I'll go home now (currently sitting in my office) and try to
> find a procedure that will at least get you up and running again. Maybe
> life gets easier if we can identify the modules that take care of your
> boot.

Might help - and I also usually ask as well, but in this case probably
will not.

> I think, however, RX02 bootstraps were pretty long to type in...
> Regards,
> Andreas Freiherr
> Vishay Semiconductor GmbH, Heilbronn, Germany
> http://www.vishay.com

Try typing in the MSCP bootstrap.

The standard RX02 bootstrap uses UNIT=0, so it may need to
be modified to use UNIT=1 for DY1:, however that stuff is not
accessible to me right now. Does anyone have the release
notes for RT-11? It may be there.

Sincerely yours,

Jerome Fine
Received on Tue Feb 26 2002 - 18:00:58 GMT

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