Trying to get my RLV11 working

Johnny Billquist bqt at update.uu.se
Wed Oct 28 17:37:44 CDT 2015


Even better. Sorry for writing responses without checking what else is 
in my inbox. I've caught up now, though.

And you definitely look like you got a stuck bit in there.
All of the errors show expected and received data, and in all cases bit 
13 is on while it shouldn't be.

Could be a bad bus driver, a bad connection, or something more funny. 
But start with the obvious ones. Do you have any extender cards so that 
you can access the card with the power on, and measure signals. Checking 
the source of bit 13 on output and trace if the signal is always on 
somewhere would be a good exercise.

Do someone remember if there are some register in the RLV11 that can be 
written and read back getting the same data out again? That could also 
be interested to test things with...

	Johnny

On 2015-10-28 21:58, Ben Sinclair wrote:
> Thanks John, I think the insanity is my own! After changing those
> switches I accidentally put the M8014 above the M8013. I've swapped
> them and now get slightly different results:
>
> One note, it now takes a while for it to start printing anything,
> which I think might mean it's running some of the first test
> successfully before getting to these. Earlier runs would start
> printing errors immediately.
>
>
> CVRLA DVC FTL ERR  00037 ON UNIT 00 TST 032 SUB 000 PC: 023576
> RLMP: CRC OF DA+3 ERROR (SERIAL DATA PATH)
> CONTROLLER: 174400  DRIVE: 0
> BEFORE COMMAND: CS: 112200 BA: 003762 DA: 155552 MP: 175555
> TIME OF ERROR:  CS: 000200 BA: 005760 DA: 155560 MP: 175554 171554
> EXP'D: 145554 REC'D: 175554
>
> CVRLA DVC FTL ERR  00038 ON UNIT 00 TST 032 SUB 000 PC: 023634
> RLMP: CRC OF CRC OF DA+4 ERROR (SERIAL DATA PATH)
> CONTROLLER: 174400  DRIVE: 0
> BEFORE COMMAND: CS: 112200 BA: 003762 DA: 155552 MP: 175555
> TIME OF ERROR:  CS: 000200 BA: 005760 DA: 155560 MP: 175554 171554
> EXP'D: 151554 REC'D: 171554
>
> CVRLA DVC FTL ERR  00039 ON UNIT 00 TST 032 SUB 000 PC: 023730
> MAINT. FILL/EMPTY FIFO DMA DATA TRANSFER COMPARE ERROR
> CONTROLLER: 174400  DRIVE: 0
> BEFORE COMMAND: CS: 112200 BA: 003762 DA: 155552 MP: 175555
> TIME OF ERROR:  CS: 000200 BA: 005760 DA: 155560 MP: 175554 171554
> BA: 005760 DA: 155560 ADDR: 004762 EXP'D: 155555 REC'D 175555
> BA: 005760 DA: 155560 ADDR: 004764 EXP'D: 155555 REC'D 175555
> BA: 005760 DA: 155560 ADDR: 004766 EXP'D: 155555 REC'D 175555
>
> On Wed, Oct 28, 2015 at 3:46 PM, John Wilson <wilson at dbit.com> wrote:
>> On Wed, Oct 28, 2015 at 03:40:46PM -0500, Ben Sinclair wrote:
>>> Well I just figured out something important...The switch numbers on my
>>> board backwards! I was going over the docs again, and noticed that MSB
>>> and LSB in their board diagram were on the wrong sides, compared to
>>> the switch numbers referenced on the next page. I'm not sure if that's
>>> just the way it is, or maybe someone replaced my switches at some
>>> point. After changing my switches I can now read 774400, which gives
>>> me 144201.
>>>
>>> The VRLAC0 diagnostic now goes further, but it thinks something is
>>> wrong. Now of course I have no idea what it thinks is wrong here!
>>
>> Bit 11 of the CSR seems to be stuck on.  That's the "bad CRC" (or write
>> check error) bit ... definitely shouldn't be on after a bus init.
>> Maybe look at some other registers to see if that bit's on everywhere
>> (possibly bad bus xcvr if so), otherwise some other insanity?
>>
>> John Wilson
>> D Bit
>
>
>


-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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