Chris,

I have one 4meg 501-1132 board in the 3/160 (gives me a total of 8megs)and
it does boot.  I can email you jumper settings after lunch (I will have to
go home and copy them). However, as I mentioned in the previous email, I
believe that there are some other problems with the jumper settings in
these 12 slot boxes.  My 3/150 (it comes up saying it is a 3/160, I guess
because it has a 501-1208 in it) has a smaller backplane and the boards can
be placed from left to right directly unlike the 3/160 backplane which has
to have the first memory in slot 5.  This of course makes it more difficult
to figure out what the jumpers are doing and where they are sending the
signals.

I think Der Mouse might be a good resource on this one, I seem to remember
about a year or so ago he did some postings on this issue.

Rick Copeland


At 11:04 AM 9/9/98 -0400, Chris Rupnik wrote:
>Rick,
> Do you have any memory cards installed in the 3/160? Does it boot?
> Can you email me the jumper settings? 
>
> Thanks
>
>Chris
>
>On Wed, 9 Sep 1998, Rick Copeland wrote:
>
>> I am having a somewhat similar problem with a 3/160.  I have pulled all the
>> cards out of my 3/160 and replaced them with the cards from a 3/150 that is
>> known good and I can't get it to work right (using the jumpers from the Sun
>> hardware faq).  In my case the "SI" type scsi card will not function.  I
>> think that there is something very different and possibly not documented in
>> the hardware faqs regarding the 3/160 backplane jumpers (besides the scsi
>> connector on the backplane).
>> 
>> Rick Copeland
>> 
>> At 09:32 AM 9/9/98 -0400, Chris Rupnik wrote:
>> >Hi
>> > In my case, the parity error is ALWAYS the same address. I believe the
>> >problem to be with VME cards instead.
>> > If i have no VME cards installed, then the machine boots fine. (only 4
>> >megs though)
>> > If i put in any memory boards into the machine, it fails with the parity
>> >check.
>> > If i put in the xyc VME board, the kernel fails on boot (bus error)
>> >
>> > I spent a good 2 hours last night going over jumper settings on both
>> >the CPU and the back of the 12 slot cardcage, and nothing seems to be
>> >wrong.
>> >
>> > Anyone out there with a working 3/160 want to email with me their exact
>> >jumper configuration?
>> >
>> > Thanks!
>> >
>> > Chris
>> >
>> >On Wed, 9 Sep 1998, Ian Clark wrote:
>> >
>> >> On Mon, 7 Sep 1998, Alfred Arnold wrote:
>> >> 
>> >> > >It looks like the parity error is happening just below the 4MB
boundary,
>> >> > >which would seem to indicate that it's a problem with memory card #1
>> (the
>> >> > >one in slot #5). Try removing that card and replacing it with the one
>> >> > >from
>> >> > >slot #3. You'll have to change a jumper on the card to mark it as RAM
>> >> > >CARD
>> >> > >#1 (or #0, depending on how they numbered those...). That will
take you
>> >> > >down to 8MB of RAM, but it's probably your only solution if that mem
>> card
>> >> > >is bad.
>> >> > 
>> >> > If it's really a 3/160, the first 4 Mbytes are on the CPU board and I
>> >> > don't know if there is a jumper on the board to disable the on-board
>> >> > RAM...so this might be a reason why the machine was thrown out :-(
>> >> > 
>> >> 
>> >> It is possible to replace the chips, I have a 3/140 which had a similar
>> >> problem (parity faults, lots of them at different addresses). Finding
the 
>> >> dud chip was a bit of a problem , and its here I come clean with the 
>> >> nasty thisgs I did to my machine! To find the chip I cut the data-out
pin 
>> >> of the 4116? 4164? memory chips in sequence to try to find a pattern as 
>> >> to address range /bit for each chip. I eventually found the right one
and 
>> >> replaced it. Probably more by good luck than anything else. 
>> >> 
>> >> In this case I figured the machine was dead anyway and I coudn't make
it 
>> >> worse. 
>> >> 
>> >> Of course if someone has details of how to map the parity fault details 
>> >> to a chip, its a piece of cake
>> >> 
>> >> 			Ian (I love the smell of flux in the morning) Clark
>> >> 
>> >
>> >
>> Sincerely,
>> Rick Copeland
>> Information Systems Manager
>> InterMag, Inc.
>> (916) 568-6744 x36
>> 
>
>
Sincerely,
Rick Copeland
Information Systems Manager
InterMag, Inc.
(916) 568-6744 x36