Need help with a 11-23+ and a RX-02 , Repost

[Gooijen, Henk]

  Hi Jerry,

swap the M8639-YA and the M8029 for starters!
The M8639-YA is the RQDX1 and is the famous board that does NOT
pass NPR/grant. It is even stated in the Field Guide that the
RQDX1 must be the last board in the chain...

  gd luck,
- Henk, PA8PDP.


-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org]On Behalf Of g-wright
Sent: dinsdag 5 juli 2005 19:29
To: cctalk at classiccmp.org
Subject: Need help with a 11-23+ and a RX-02 , Repost


Hi,
 
I'm trying to get one of my 11-23's going and finally
got around to setting up a TU58 emulator. got it
to boot RT-11 and now trying to get a RX-02 working.
 
I have 3 controllers and 3 sets of RX-02's.  All do the same
thing. The just seems to not be able to find track 1 or Home
or ???  The heads just keep going from  home to maybe the
first tack and back.  The heads do load and the system tries
quit a few times then pauses and tries again. It then errors
on drive failure or  read error directory not found, size
function failed depends what I ask it to do.  I have tried all
of the boards and drives. all or them seem to do the same
 thing.  I do not know  how good the drives are but can't
 believe there all bad.  
 
I have recheck the switches in the RX-02 and the Jumpers on
the cards.  Cleaned the drives. tried different disks.
 
Is there some kind of   compatibility issue that i do not know
about. Or do I have 6 dead drives.
 
The system is a Micro PDP 11,  8 slot Rack mount, with
1 M8189     11-23+
1 M8067 KB  256k Memory
1 M8639 YA  MFM rx50 controller
1 M8029     RX-02 controller
- in this order.
 
Everything else seems to work.   I added the floppy card
but the rest is original.
  
Thanks, Jerry
 
Jerry Wright
JLC inc