Dilog DQ614 diagnostics program first tests - test-drb@ccmp.vtda.org

3 Jan 2002

On Jan 3, 11:51, Sergio Pedraja Cabo wrote:

...
  I did the first tests with the DQ614P.SAV program and
my Dilog DQ614
 MFM controller board. This board simulates up to four RL01/02 units
 in one PDP-11 using one or two MFM hard disks. I am using:
 [...]
...
  * One Dilog DQ614 Revision S
 * One Quantum MFM Hard Disk Q540 (Aka. RD52-A)
 * RT-11 v.4 
...
  * I assume the vector addresses of the unit is 174400
and 160. 
That should be correct, unless you have a non-standard PAL at U55 on the
DQ614.

...
  The software used is the DQ614P.SAV diagnostics
program Revision 0,
 and one DL.SYS driver that came with the DQ614P program. 
Why?  Why don't you use the DL driver that came with the OS?  The device
drivers are OS-version-specific, and the driver I put up beside the
formatter is for RT-11 5.04, which is different to RT-11 4.0.

...
  Well, the program starts ok. There is no apparently
problem with the
 OS environment. It works with its DL.SYS module, with the own DL.SYS
 module of the RT11 V.4, and without it too.

 The program startup and asks me if I'm working with a C.R.T (I assume
 it speaks about a terminal). 
Yes, as Ethan said that just means a VDU as opposed to a printing terminal
-- it affects how it treats the delete key, and in this case also affects
whether it clears the screen; if you answer "N" to the CRT question, it
won't print current cylinder addresses becasue the printout would consume a
lot of paper.

...
  Later the program asks me about the
 access vector for the controller. By default it uses 174400 and 160
 values. I assume them too. The next step is to select one MFM hard disk.
 My disk is the 73, one Quantum Q540. 
If the drive you want to use is not in the list, instead of typing a number
...
 from the list, type "E".  You'll then be
prompted to enter number of heads, number of cylinders, RWCC (which the manual says
isn't used), cylinder at
whivch to start precompensation (also not used), and to pick a step rate
...
 from a list. 
...
  Inmediately, the program permits
 me to select how much DL disks I want to emulate. I can emulate two
 RL02 and two RL01. The program asks me: "Are you sure ?". My answer is
 yes. The process begins... and some seconds later, the program send me
 a message telling: "UNEXPECTED RESPONSE IN ADDRESS 00000160 (sometimes
 is the address 00000000). I've tried to change the cable selection,
 the address selection, etc... In this case, the message tells me that
 the unit can't be accessed. 
Sounds like you have the correct address and vector but something is
generating spurious interrupts.  Is there another RL controller in the
system?  Or something with a misconfigured vector?

...
  Like a final indication, the Q540 hard disk have 5
jumpers named
 DS1, DS2, DS3, DS4 and ^. Actually is selected the DS1. 
That should be right.  Make sure you have the 20-pin cable on J2, not J3.
 Does the drive have a terminator?

...
  What is wrong ? I suspect that the program must be the
same revision
 than the board (Revision "O" the program, revision "S" the board).

I don't think so.  The program came with a Rev.K board.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York