Michael Holmes <mholmes10 at hotmail.com> writes:
>Gurus,
>
>
>I'm looking for your advice.
>
>
>My DEC 3000 gave me a POST NVR error and after trying all the steps to fix =
>it (reseating boards, memory, etc...) it looks like the RTC (DALLAS DS12871=
>A) has died.
>
>
>Searching on line I found some places marketing a replacement for DS1287 fo=
>r old PC's but not sure if any would work for DEC given it had an A at the =
>end in the model number (different pins etc...)
>
>
>Given that this sounds like a common problem on early VAXen, I was wonderin=
>g if of you have some recommendations on a good source to purchase a replac=
>ement RTC that will work with DEC equipment.
>
>
>Thanks much!
You can replace it with the newer DS12887 available from various electronics
parts resellers. Several listed below:
http://www.mouser.com/ProductDetail/Maxim-Integrated/DS12887A+/?qs=0Y9aZN%2…http://www.digikey.com/product-detail/en/DS12887A%2B/DS12887A%2B-ND/956873http://store.batteryspecialists.com/ds12887a.htmlhttp://www.interstatebatteries.com/1/1/5018-ds12887a-lit2695.html
--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)ORG
I speak to machines with the voice of humanity.
Gurus,
I'm looking for your advice.
My DEC 3000 gave me a POST NVR error and after trying all the steps to fix it (reseating boards, memory, etc...) it looks like the RTC (DALLAS DS12871A) has died.
Searching on line I found some places marketing a replacement for DS1287 for old PC's but not sure if any would work for DEC given it had an A at the end in the model number (different pins etc...)
Given that this sounds like a common problem on early VAXen, I was wondering if of you have some recommendations on a good source to purchase a replacement RTC that will work with DEC equipment.
Thanks much!
Mike
. one more time. This time should be the last time, I hope.
108.65.195.50
As always, decnet.jfcl.com points to the correct address, so if your end is
using that you just need to restart the link.
Bob
Indeed. I haven't been up to that much just lately, been doing other stuff.
But I keep coming back to my failed H7864 PSU (from an rtVAX 1000), trying
to find the fault. Right now I have a little DEC Venturis PC onto which I am
just installing Windows NT 3.1 as I type. It isn't VAX or any kind of PDP,
but it is still a DEC machine!
Regards
Rob
> -----Original Message-----
> From: DECtec [mailto:dectec-bounces at dectec.info] On Behalf Of Mark
> Wickens
> Sent: 14 November 2015 18:14
> To: DEC discussion list.; hecnet at Update.UU.SE
> Subject: [DECtec] It's oh so quiet...
>
> It's very quiet - anyone up to anything interesting (on or off topic)?
>
> I'm starting to ramp up for Retrochallenge January 2015.
>
> I've bought an ESP8266 NodeMCU wifi board with a view to hooking up a
Tandy
> Model 102 to the internet. It's effectively a serial->tcp/ip converter.
Very cool
> and 10 quid delivered off eBay.
>
> I also created a character map for the Tandy 100/102/200 with a view to
using
> it to convert Tandy-format files to Unicode, so I can write my
Retrochallenge
> blog using the Tandy 200.
>
> http://wickensonline.co.uk/static/files/tandy/Tandy%20Model%20T%20Code%2
> 0to%20Unicode%20Generated%20V1.8.html
>
> Mark.
>
> --
>
> DECtec mailing list
> http://dectec.info
>
> To unsubscribe from this list see page at:
> http://dectec.info/mailman/listinfo/dectec_dectec.info
Yes, very quiet. I?m also starting to think about Retrochallenge. This time I think I might combine my ham radio hobby with my retro hobby. I?m going to try to get a VAX to connect to HECnet using DStar ID-1 radios that act as 128kbps ethernet bridges. From my reading, they are true bridges, so should be able to transport non-IP protocols. I suspect this is the first time anyone will have tried to deliver DECnet over DStar :)
Ian
> On Nov 14, 2015, at 10:13 AM, Mark Wickens <msw at hecnet.eu> wrote:
>
> It's very quiet - anyone up to anything interesting (on or off topic)?
>
> I'm starting to ramp up for Retrochallenge January 2015.
>
> I've bought an ESP8266 NodeMCU wifi board with a view to hooking up a Tandy Model 102 to the internet. It's effectively a serial->tcp/ip converter. Very cool and 10 quid delivered off eBay.
>
> I also created a character map for the Tandy 100/102/200 with a view to using it to convert Tandy-format files to Unicode, so I can write my Retrochallenge blog using the Tandy 200.
>
> http://wickensonline.co.uk/static/files/tandy/Tandy%20Model%20T%20Code%20to…
>
> Mark.
>
> --
>
> DECtec mailing list
> http://dectec.info
>
> To unsubscribe from this list see page at: http://dectec.info/mailman/listinfo/dectec_dectec.info
>
>
> ---
> Filter service subscribers can train this email as spam or not-spam here: http://my.email-as.net/spamham/cgi-bin/learn.pl?messageid=952F02F88AFB11E58…
Well, about two weeks since my last announcement, but I figured I should
do another one.
I've cut a new release of TCP/IP for RSX, and I encourage everyone to
update to this latest release.
A short list of changes since my last release:
Documentation:
. I've worked some on the documentation, and filled out some parts that
were previously TBD.
TCP:
. Performance improvements. In general, I've improved file transfer
performance by about 20% by tuning when TCP ACK messages as well as
window updates are sent. On links where packets are dropped from time to
time, the performance improvements can be significantly higher.
. Bugfix. Retry counter were incorrectly reset under some circumstances.
. Bugfix. TCP did not resend an ACK if the same data was received twice.
. Bugfix. TCP sockets could erronously be left in a closed state with
no task. However, looking at the socket, it looked like a task was
associated.
FTP:
. Size calculation for stream type files in RSX mode was done incorrectly.
Applications:
. I've included a precompiled version of PCL.TSK
As usual, the distribution is available from:
ftp://mim.update.uu.se/bqtcp.dsk
ftp://mim.update.uu.se/bqtcp.tap
ftp://ftp.update.uu.se/pub/pdp11/rsx/tcpip/tcpip.dsk
The documentation is also available through ftp on Mim, or also at
http://mim.update.uu.se/tcpipdoc
Johnny
--
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
