4 Jan
2015
4 Jan
'15
2:46 p.m.
When I power up my DECsystem 5100 I get the output shown at the end of this
email. I thought this was to do with the DS1287 chip as it seems be an NVRAM
battery error (perhaps). Since I know these devices fail I took out the
DS1287, put in a socket and then bought a replacement DS12887A. But I still
get the same problem. It could be that I bought a bad replacement, or that I
have done some damage in my desoldering of the original, or it could be that
the error is something completely different. In fact the Maintenance Manual
suggests test 9 is to do with the DZ, and I can't find what test 4 relates
to.
Does anyone know what this failure is if it isnt' the DS1287?
Is there an easy way to test a DS1287?
Regards
Rob
26..25..24..23..22..21..20..19..18..17..16..15..14..14..14..
13..12..11..10..09..?45a nv ba?45a nv bat
?45a nv ba?45a nv bat
?45a nv ba?45a
nv bat
08..07..06..05..04..?45a nv bat
03..
?45a nv bat
?45a nv bat
?45a nv bat
?45a nv bat
?45a nv bat
?45a nv bat
KN230 V1.4
08-00-2b-27-04-50
0x800000
> conf -f
hardware: revision 1
firmware: revision 5
cpu: revision 2.32
fpu: revision 3.32
security switch: secure mode
password: clear
eeprom: valid
ethernet hardware address: 08-00-2b-27-04-50
option board: not present
memory: total size 8MBs
bank0 4MB SIMMs size: 8MBs 0 bad pages
scsi peripherals
unit type product removable/fixed capacity
7 host adapter
> prcache
4 Jan
4 Jan
3:03 p.m.
On Sun, 4 Jan 2015, Robert Jarratt wrote:
When I power up my DECsystem 5100 I get the output
shown at the end of this
email. I thought this was to do with the DS1287 chip as it seems be an NVRAM
battery error (perhaps). Since I know these devices fail I took out the
DS1287, put in a socket and then bought a replacement DS12887A. But I still
get the same problem. It could be that I bought a bad replacement, or that I
have done some damage in my desoldering of the original, or it could be that
the error is something completely different. In fact the Maintenance Manual
suggests test 9 is to do with the DZ, and I can't find what test 4 relates
to.
How does the DDS12887A compare in speed/timing compared to the original
DS1287 I know with Suns some 150ns ones don't work, yet 100ns or 200ns or
whatever are fine.
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
3:04 p.m.
On 2015-01-04 12:46, Robert Jarratt wrote:
When I power up my DECsystem 5100 I get the output
shown at the end of this
email. I thought this was to do with the DS1287 chip as it seems be an NVRAM
battery error (perhaps). Since I know these devices fail I took out the
DS1287, put in a socket and then bought a replacement DS12887A. But I still
get the same problem. It could be that I bought a bad replacement, or that I
have done some damage in my desoldering of the original, or it could be that
the error is something completely different. In fact the Maintenance Manual
suggests test 9 is to do with the DZ, and I can't find what test 4 relates
to.
test 4 is RTC test
4:31 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of emanuel
stiebler
Sent: 04 January 2015 20:04
To: General at classiccmp.org; Discussion at classiccmp.org:On-Topic and Off-
Topic Posts
Subject: Re: Understanding DECsystem 5100 Self Test Failure
On 2015-01-04 12:46, Robert Jarratt wrote:
Hmmm, that seems to pass OK if I do this:
When I power up my DECsystem 5100 I get the
output shown at the end of
this email. I thought this was to do with the DS1287 chip as it seems
be an NVRAM battery error (perhaps). Since I know these devices fail I
took out the DS1287, put in a socket and then bought a replacement
DS12887A. But I still get the same problem. It could be that I bought
a bad replacement, or that I have done some damage in my desoldering
of the original, or it could be that the error is something completely
different. In fact the Maintenance Manual suggests test 9 is to do
with the DZ, and I can't find what test 4 relates to.
test 4 is RTC test > test -v 0x4
-004-03 rtc tsts
-004-04 wrt nv ram w/ aa
-004-04 chk nv ram w/ aa
-004-04 wrt nv ram w/ 55
-004-04 chk nv ram w/ 55
-004-05 wrt nv ram w/ inc pat
-004-05 chk nv ram w/ pat
-004-06 wrt rtc reg w/ inc pat
-004-06 chk rtc reg w/ pat
-004-07 set time - enb uie int
-004-08 chk periodic int
>
The test numbers in the power-up sequence don't match the numbers in the
extended list of tests where the test numbers are in hex (test 10 in the
power up is test 0x4 - RTC).
Having discovered the test -v options I got a bit more detail from test -v
0x0:
09..
-005-05 dz ln 01 int rx/tx lpback tst
?45a nv ba?45a nv bat
-005-05 dz ln 02 int rx/tx lpback tst
?45a nv ba?45a nv bat
-005-05 dz ln 03 int rx/tx lpback tst
?45a nv ba?45a nv bat
08..
-006-03 sii tsts
-006-04 sii buf ram tst
-006-05 sii trgt tst
-006-06 sii initiator tst
07..
-007-01 lance tsts
-007-03 lance csr tst
-007-04 lance intrnl lb tst
-007-06 lance crc err detect tst
-007-07 lance promiscuous mode rx tst
-007-08 lance coll detect tst
-007-09 lance multicast rx tst
-007-0a lance irq tst
06..
-008-03 eeprom tst
-008-03 chk pats
-008-03 chksum tst
05..04..?45a nv bat
>
It suggests the 09 test is a loopback problem, and that would be OK as I
don't have a loopback connector installed, but looking again, the test is an
internal loopback test. But it does not help at all on the 04 failure....
Regards
Rob
5 Jan
5 Jan
11:19 a.m.
On Sun, 4 Jan 2015, Robert Jarratt wrote:
When I power up my DECsystem 5100 I get the output
shown at the end of this
email. I thought this was to do with the DS1287 chip as it seems be an NVRAM
battery error (perhaps). Since I know these devices fail I took out the
DS1287, put in a socket and then bought a replacement DS12887A. But I still
get the same problem. It could be that I bought a bad replacement, or that I
I hope you did not throw out the old one. Assuming the new one is not
compatible with you system or the battery in the new one is also dead, you
can find a set of instructions on the internet to drill a couple appropriate
holes in the DS1297 to disconnect the internal battery and attach an
external battery.
I have the link some where if you cannot find it.
I have an Alphaserver 4100 (running VMS) within arm's reach that is turned
off because of a dead DS1287, I have the parts but I have not found the time
to do the repair. This conversation reminds me that I have put that off for
too long.
--
Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father
Athabasca University : but you have to earn
Athabasca, Alberta Canada : the title of 'daddy'"
** richardlo at admin.athabascau.ca ** : - Lynn Johnston
12:43 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard
Loken
Sent: 05 January 2015 16:19
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Understanding DECsystem 5100 Self Test Failure
On Sun, 4 Jan 2015, Robert Jarratt wrote:
can
When I power up my DECsystem 5100 I get the
output shown at the end of
this email. I thought this was to do with the DS1287 chip as it seems
be an NVRAM battery error (perhaps). Since I know these devices fail I
took out the DS1287, put in a socket and then bought a replacement
DS12887A. But I still get the same problem. It could be that I bought
a bad replacement, or that I
I hope you did not throw out the old one. Assuming the new one is not
compatible with you system or the battery in the new one is also dead, you find a set of instructions on the internet to drill a
couple appropriate
holes in
the DS1297 to disconnect the internal battery and
attach an external
battery.
I have kept the original, but I am not sure that it was faulty in the first
place. I think the fault is something else, but I am not sure what. I did
find some pages on how to "repair" one, but I would rather be sure it is
faulty now before trying to do anything to it. For the record the RTC
self-test passes successfully.
Regards
Rob
I have the link some where if you cannot find it.
I have an Alphaserver 4100 (running VMS) within arm's reach that is turned
off
because of a dead DS1287, I have the parts but I have
not found the time
to do
the repair. This conversation reminds me that I have
put that off for too
long.
I would consider at least taking out the old one and soldering in a socket
so that if necessary it is easy to replace.
Regards
Rob
1:28 p.m.
On Mon, 5 Jan 2015, Robert Jarratt wrote:
I get off easy, the RTC chip is already in a socket and not hard to access
once I have removed about 10kg of screws and sheet metal.
--
Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father
Athabasca University : but you have to earn
Athabasca, Alberta Canada : the title of 'daddy'"
** richardlo at admin.athabascau.ca ** : - Lynn Johnston
the repair.
This conversation reminds me that I have put that off for too
long.
I would consider at least taking out the old one and soldering in a socket
so that if necessary it is easy to replace.
1:36 p.m.
On Mon, 5 Jan 2015, Robert Jarratt wrote:
I have kept the original, but I am not sure that it
was faulty in the first
place. I think the fault is something else, but I am not sure what. I did
find some pages on how to "repair" one, but I would rather be sure it is
faulty now before trying to do anything to it. For the record the RTC
self-test passes successfully.
I agree that you might want reserve judgement on the RTC.
The RTC problem in my Alphaserver a very strange (and well documented) case.
If the battery is dead, which it is after 20 years on the job, then the
system time is not what OpenVMS expects so it refuses to boot. I have not
found a way around this except to reinstall VMS which I did on two occasions
and then it will run just fine (for VMS anyway) until the next time the
power is disconnected. That business gets old really fast - especially when
the guy in the next office trips the circuit breaker less than 24 hours
after I have brought it back on line.
I like this big noisy box and I like VMS so I must fix the RTC.
--
Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father
Athabasca University : but you have to earn
Athabasca, Alberta Canada : the title of 'daddy'"
** richardlo at admin.athabascau.ca ** : - Lynn Johnston
2:20 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard
Loken
Sent: 05 January 2015 18:37
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Understanding DECsystem 5100 Self Test Failure
On Mon, 5 Jan 2015, Robert Jarratt wrote:
system
time
I have kept the original, but I am not sure that
it was faulty in the
first place. I think the fault is something else, but I am not sure
what. I did find some pages on how to "repair" one, but I would rather
be sure it is faulty now before trying to do anything to it. For the
record the RTC self-test passes successfully.
I agree that you might want reserve judgement on the RTC.
The RTC problem in my Alphaserver a very strange (and well documented)
case.
If the battery is dead, which it is after 20 years on the job, then the is not what OpenVMS expects so it refuses to boot. I
have not found a way
around this except to reinstall VMS which I did on two occasions and then
it will
run just fine (for VMS anyway) until the next time the
power is
disconnected.
That business gets old really fast - especially when
the guy in the next
office
trips the circuit breaker less than 24 hours after I
have brought it back
on line.
I like this big noisy box and I like VMS so I must fix the RTC.
Have you tried buying a DS12887 as a replacement? They are supposed to be
drop-in replacements, and if yours is already socketed then it should be
pretty simple to try.
Regards
Rob
3:24 p.m.
On Mon, 5 Jan 2015, Robert Jarratt wrote:
Have you tried buying a DS12887 as a replacement? They
are supposed to be
drop-in replacements, and if yours is already socketed then it should be
pretty simple to try.
Yes, I have two of them here. That will be the first attempt and fortunate
then I will be able to stop there if I am lucky.
--
Richard Loken VE6BSV, Unix System Administrator : "Anybody can be a father
Athabasca University : but you have to earn
Athabasca, Alberta Canada : the title of 'daddy'"
** richardlo at admin.athabascau.ca ** : - Lynn Johnston
3520
days inactive
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days old
9 comments
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participants (4)
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b4＠gewt.net -
emu＠e-bbes.com -
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robert.jarratt＠ntlworld.com