Restoring an RXV21 and/or an RX02
rodsmallwood52 at btinternet.com
Wed Jun 8 09:33:52 CDT 2016
On 08/06/2016 13:01, Jerome H. Fine wrote:
> >Rod Smallwood wrote:
>> In my quest for a working RX02 I'm trying to find out the best way
>> of checking out an RXV21 and get it talking to the RX02. I have most
>> of the standard diagnostics including XXDP.
>> The setup is an 11/83 with an RX50 and RD53. (I can boot from either)
>> In the box is
>> MSV11-J PMI
>> They are in the order as above. The two dual height modules are in
>> the right hand side of the back plane when viewed from the front.
>> I am unsure as if there is a utility for RXV21 among all the diags I
>> have or should I go in with ODT on a halted system and look at
>> With the setup above I need to get the RXV21 going in order to check
>> out the RX02.
> You did not specify the backplane. I am going to assume
> a BA23 box. Since both the RXV21 and the RQDX3
> are dual modules, and the first three slots are ABCD,
> you do not need (and should not have) a bus grant
> (M9047) beside the RXV21. So while the RXV21
> is in the AB portion of an ABCD slot, the RQDX3 is
> in an ABAB or Q22 slot. That is what is supposed to
> be the situation. If you add a TK50, then that controller
> will be placed into the 4th slot beside the RQDX3.
> As long as the RQDX3 is immediately below the RXV21
> and the RQDX3 is working, then you should be able to
> check the IOPAGE registers on the RXV21 while you
> are running RT-11. Either use ODT or SD.SYS if you
> are running V05.05 of RT-11 or later.
> Other than that, I can't help much with the RX02 drive.
> The only thing that I can think of is that the cable between
> the RXV21 and the RX02 is installed incorrectly. I seem
> the remember doing that once or twice.
> Other hardware individuals can help much better that I can.
> Jerome Fine
Thanks for the reply.
Its good to know I have at least got the boards in the right order.
Well we have moved on again after a complete check of cables and
The DY (RX02) driver seems to have loaded and now the RX02 has started
If you do say DIR DY0 then drive 0 clonks even if there is a disk in the
Same applies for drive 1.
So drive select works . Its probably looking for data from the head or
So me it seems to be down to the drive itself.
It fails with controller error 20 so I best go find what that means
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