Noel Chiappa wrote:
[..]
> - and the memory still works fine!
>
>
> Does anyone have _any_ idea WTF is going on here?!?!
>
> I feel like I'm in some sort of AI koan...
>
> Noel
- bad solder joint
- bad via
- thin whisker
- bad wire bonding in the chip
..that are the possibilities come
I still do. And I'm even looking for an apple parker vector rollerball pen
:) :) :)
Em 08/09/2015 02:58, "j...@cimmeri.com" escreveu:
> On 9/8/2015 12:28 AM, Marc Verdiell wrote:
>
>> Thanks for the answers everyone, I am writing everything down...
>> Marc
>>
>>
>>
>>
> Nice to hear that people a
On 9/8/2015 12:28 AM, Marc Verdiell wrote:
Thanks for the answers everyone, I am writing everything down...
Marc
Nice to hear that people are still *writing* things down...
- J.
Thanks for the answers everyone, I am writing everything down...
Marc
On 9/7/15 7:21 PM, Josh Dersch wrote:
On 9/7/15 8:01 AM, Al Kossow wrote:
On 9/6/15 2:18 PM, Josh Dersch wrote:
Lots of other disks to look through but it's a pain to get them
written out; one of those HxC floppy drive emulators is looking
rather nice right now :).
you might want to see i
So, an IBM compatible machine, sold by CDC, with a DEC terminal for the
console? Must have been the beginning of the end :-)
On September 6, 2015 11:36:05 PM CDT, Chuck Guzis wrote:
>On 09/06/2015 07:54 PM, Mark Linimon wrote:
>>
>http://www.ebay.com/itm/VINTAGE-197X-RARE-CONTROL-DATA-AD-OMEGA-4
On 9/7/15 8:01 AM, Al Kossow wrote:
On 9/6/15 2:18 PM, Josh Dersch wrote:
Lots of other disks to look through but it's a pain to get them
written out; one of those HxC floppy drive emulators is looking
rather nice right now :).
you might want to see if
http://bitsavers.org/bits/Xerox/8010
On 09/07/2015 05:09 PM, Noel Chiappa wrote:
And when I put my 'scope lead on the second input... the memory
suddenly starts working!
Well, I could see that - the added resistance or capacitance or whatever of
the probe might have had some effect on a circuit that was right on the edge.
But her
On 2015-09-08 00:09, Noel Chiappa wrote:
So I've mentioned how I've seen this wierd behaviour where QBUS memory boards
that hadn't been used in a long time didn't work when first plugged in, but
started working later.
I just had something even weirder happen, and am curious if anyone has an
plau
If I were doing it.
First you need to find out if it needs OC output.
There are many flash parts in surface mount that can have
the higher speeds.
Add some 74LVC245 to give bus drive needed, also surface mount.
All on a little PC board. There would be a lot of wasted space in the
flash but what the
Check if the -5v charge pump is stable and supplying the correct voltage.
I recall a problem with a PDP 11/34 and a non-DEC memory board in
which the on board pump went slowly bad. Depending on the
data content and tolerance margins for the memory chips, we saw
very erratic problems.
Jerr
Sean wrote
-
But I do think there's merit in Alexandre's general argument that one could
theoretically emulate the older bipolar PROMs with some mix of modern
components ... and the programmable device would be (a) more easily obtainable
than the old bipolar PROMs and (b) programmable wi
Bit of a tricky one to google this, so thought I'd consult the list -
does anyone know of a documented project that replaced the internals of
a BBC Model B with a Raspberry Pi (or MiniITX PC) interfacing with
keyboard etc. to bring modern internals with a traditional interface?
I don't even kn
So I've mentioned how I've seen this wierd behaviour where QBUS memory boards
that hadn't been used in a long time didn't work when first plugged in, but
started working later.
I just had something even weirder happen, and am curious if anyone has an
plausible explanations.
So I had a dead M8044
On Mon, Sep 07, 2015 at 11:10:26AM +0200, simon wrote:
> As something went wrong in posting this question, I try to repost it
> here. please don't be offended by this.
>
>
> -
> Hi all.
>
> is there a list of equivalents for
On 9/7/15 8:34 AM, Alexandre Souza wrote:
sometimes you gotta use flash
devices that are WAY faster than common EPROMs...
and sometimes that won't work, because the hold time of fast
devices is too short.
But I do think there's merit in Alexandre's general argument that one could
theoretically emulate the older bipolar PROMs with some mix of modern
components ... and the programmable device would be (a) more easily
obtainable than the old bipolar PROMs and (b) programmable with
inexpensive, contempo
> Anyone here get the Control Data 160 (Ebay 252070822992)?
Is any of the 160 software still around (e.g. the FORTRAN compiler?) ??
Original flavor, "A" or "G" model - I don't care.
And no, I didn't win the auction :-)
Bob Armstrong
As I said in the original post I wrote, sometimes you gotta use flash
devices that are WAY faster than common EPROMs...
2015-09-07 12:32 GMT-03:00 John Robertson :
> On 09/06/2015 2:00 PM, Alexandre Souza wrote:
>
>> Jay, no one is pin compatible, I always make adapters. But at least I make
>> it
On 09/06/2015 2:00 PM, Alexandre Souza wrote:
Jay, no one is pin compatible, I always make adapters. But at least I make
it work :D
2015-09-06 16:00 GMT-03:00 Jay West :
Alexander wrote...
-
Intersting to note: many times i have used eproms in place of these proms.
Usually, flash parts are
I have a 3000/400 and I was never able to get 8.3 to install on it ... I
don't think I was ever able to get it to even boot from the 8.3 media (with
most recent firmware) ... I just dropped back to V7.3 and it works great.
Best,
Sean
On Mon, Sep 7, 2015 at 9:48 AM, Mark Wickens
wrote:
> I was
Its got a PMAGB-B fitted in Turbochannel slot1 as per the 3000 600 user
guide page 2-12 fig 2-8
Regards Rod
On 07/09/2015 14:48, Mark Wickens wrote:
I was quite surprised about 8.3 supporting the DEC 3000/600 AXP,
however looking at the Quickspecs you appear to be right.
http://www8.hp.com/
On 9/6/15 2:18 PM, Josh Dersch wrote:
Lots of other disks to look through but it's a pain to get them written out;
one of those HxC floppy drive emulators is looking rather nice right now :).
you might want to see if http://bitsavers.org/bits/Xerox/8010/extractXeroxFloppy.zip
can be adapted
On 9/7/15 5:53 AM, Noel Chiappa wrote:
So I have started such a registry.
Alan Frisbie has been scanning tons of stuff this past year. I expect that many
missing schematics
will surface when that is made available.
On 9/6/15 7:54 PM, Mark Linimon wrote:
Does anyone have any idea if this was a real
product
there are a couple of manuals for it on bitsavers
I was quite surprised about 8.3 supporting the DEC 3000/600 AXP, however
looking at the Quickspecs you appear to be right.
http://www8.hp.com/h20195/v2/GetPDF.aspx%2Fc04154442.pdf
However, I don't see any Turbochannel graphics adapters listed as
supported, only the following:
Graphics Option
> On looking at the 11/05S print set online, I think it has most of the
> MM11-Y prints
Err, make that the 11/04 print set. (Sorry!) The 11/05S has the MF11-U (or
would that be MM11-U - I wonder if there's a system to the ME/MF/MM
designators).
Noel
> There are a number of things like that (e.g. the H786 power supply for
> the BA11-N; [print sets] not available separately [online], but in the
> 11/23 FMPS [online], if you know to look there): we ought to produce
> some sort of registry, to collect such information in one place
Hello Peter
Looks like I trod the same path as you.
I cleaned the CD with a microfibre cloth. No Joy.
I tried every scsi CD drive I have. After setting the jumpers of course.
Theres a couple more in the store I'll clean them up and give them a try.
The wife and I (retired) are off for a
Rod Smallwood wrote:
I thought it might be nice to have a DEC based graphics work station.
I had the Alpha, a high res monitor and the Hobbyist Media CD for
ALPHAVMS 8,3. (yes the system supports 8.3)
SFSG .. So CD in the drive and switch on. First a nice colour graphics
demo/test.
Then the n
I thought it might be nice to have a DEC based graphics work station.
I had the Alpha, a high res monitor and the Hobbyist Media CD for
ALPHAVMS 8,3. (yes the system supports 8.3)
SFSG .. So CD in the drive and switch on. First a nice colour graphics
demo/test.
Then the nomal system level stuff
As something went wrong in posting this question, I try to repost it
here. please don't be offended by this.
-
Hi all.
is there a list of equivalents for DEC ic's?
I've made a mistake in attaching our BA-8 to the PDP8/f a
On 07/09/2015 03:16, "Win Heagy" wrote:
> I picked this up at Radio Shack about 25-30 years ago and have been
> hauling it around ever since.
>
> http://imgur.com/oNEcRFv,VacFqrY#0
> (There should be two images...a link to the second.)
>
> It was a surplus thing that RS was selling on the parts
33 matches
Mail list logo
