Troubleshooting RX02

[joe heck]

I'm one of  those "DEC" hackers, with tons of experience with rx02, dsd 
880, I own a
dsd 440, used mxv11 boots, etc, but my two cent's worth will have to 
wait unti the weekend
when I have time.  The head load means nothing from what you say, they 
seek to track zero
on a bus reset.  If a floppy didn't have a bootstrap on it, or the 
floppy was bad, then you
would get an error on the console.  I would be chasing an interrrupt 
chain, which means you
don't have the cards in the backplane correctly, an empty slot along the 
way, but I will have
to go back and chase all the emails down to see what has already been 
recommended.

You can check memory starting at location zero to see if the first block 
was even loaded
from the floppy, but just right now, I can't tell you what the sequence 
is to look forl

if you email me directly,  heck at neu.edu, i can probably give you much 
more input

joe heck


Ashley Carder wrote:

>>>Perhaps the controller you're using doesn't have boot roms on it?  You
>>>could try entering a bootstrap by hand to boot the system.  Here's a
>>>starting point:
>>>      
>>>
>>Yes, both controllers I've tried to use so far have boot PROMs.
>>
>>    
>>
>>>http://www.shiresoft.com/pdp-11/software/bootstraps/bootstraps.html
>>>
>>>I'm assuming that you've already figured out how to use ODT. :)
>>>      
>>>
>>I'm way beyond this point, but thanks anyway :)
>>
>>What the hell happened to all the DEC hackers here?!!?
>>    
>>
>
>I'd offer advice if I could, but my experience in these areas is limited to
>older unibus PDP-11s running standard DEC controllers and drives.
>The other DEC junkies on the list probably have more experience and
>advice to offer than I do.
>
>Ashley
>
>  
>