I tried my hand at soldering a 68 pin TQFP using the "push the blob
down" method described on a YouTube video. It worked pretty well,
but for one side of the QFP, where there were several solder bridges.
The bridges were easy to clean up using a bit of solder wick. About
the only thing I'd do differently is to tack down two corners rather
than one--it's easy with just one corner tacked to displace the
package slightly with just the pressure of the soldering tip.
I didn't try the "flood and suck" method.
I used the largest chisel tip on my old Weller TC201 iron, a PTC6--a
blunt tip suited to soldering #14 wire, but it holds a lot a solder.
Thanks all for the suggestions,
Chuck
Got my SGI Crimson up and running on serial console, and I've got an
old SGI monitor sitting around, but I guess I gave away all my cables.
Anyone have such a cable in their junk bins? Only ones on ebay now
are from the dealer-gougers.
> You can get the license for free, but for some reason HP has decided
> not to provide downloads. You can buy hobbyist media for $30, but
> that's way more than I've spent getting the system itself and I don't
> want to wait for the thing to arrive, so I'm hoping somebody has it up
> on FTP somewhere.
>
AFAIK the DEC/CPQ/HP license never allowed that officially. The big
unfortunate bit about the hobbyist program is that HP has not approved
a v4 hobbyist release with OpenVMS 8.2 yet (been years). There are
differences between V7.3-2 and V8.x that make some software unusable.
On the good side, the licenses are valid for any version of OVMS you
can get your hands on, <OfT>Itanium support has been added to the
hobbyist PAKGEN</OfT>, and the program is still alive!
On Jan 5, 2008, at 5:53 PM, cctalk-request at classiccmp.org wrote:
> Is ID 4 essential? I've read conflicting info re: required device IDs
> for booting. What is the expected behavior using a different ID?
>
No- OpenBoot Suns alias the "boot cdrom" command to a specific ID, but
SGIs don't. Don't use ID0- that's the HBA on SGIs, other than that
anything goes. Default systemdisk is ID1, though, respecting that makes
it easier. For a different ID you have to change your "boot" command,
that's the only difference.
I've recently been searching for a VMS-capable machine or two in the
East Bay area of San Francisco, CA and have been directed to this
list. Besides catering to my interest in classic computing, I'm hoping
it will also have a few subscribers in my area (Livermore) with a VAX,
Alpha, or Itanium to get rid of cheap. If you have one, please drop me
a note off-list.
I guess I'll also need CDs or CD images of VMS for Alpha if I end up
getting one of those... I have VAX images but no Alpha.
Oh, one more thing--I have already run VMS on SIMH's VAX emulator,
thank you, but I'd like to try it on real hardware.
Thanks
John
--
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
Does anyone know where I can find the schematic for the IMSAI CP-A
(operators panel)? Every source I have looked at just has the
assembly and operations manual for the CP-A, but not the actual
schematic. I'm trying to bring back an old one from the grave, and
having an actual schematic would help a lot!
Thanks,
-Mardy
>
>Subject: Re: Looking for IMSAI 8080 CP-A Schematic
> From: "Marden P. Marshall" <mardy at voysys.com>
> Date: Sat, 05 Jan 2008 17:02:40 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>
>On Jan 5, 2008, at 12:39 PM, Roy J. Tellason wrote:
>
>> On Saturday 05 January 2008 03:50, David Griffith wrote:
>>> On Fri, 4 Jan 2008, Marden P. Marshall wrote:
>>>> Does anyone know where I can find the schematic for the IMSAI CP-A
>>>> (operators panel)? Every source I have looked at just has the
>>>> assembly and operations manual for the CP-A, but not the actual
>>>> schematic. I'm trying to bring back an old one from the grave, and
>>>> having an actual schematic would help a lot!
>>>
>>> I have an original documentation binder that I'll check out and
>>> photocopy
>>> if it has the schematics.
>>
>> I do too, someplace. It's hiding though. I don't recall if it
>> includes that
>> information or not. If you end up making that info available in
>> electronic
>> form, I'd be interested in having a copy as well.
>>
>> And while we're on the subject of Imsai, does anybody have part
>> numbers handy
>> for those switches? I have several that are broken to replace.
>
>They are made by C & K. The 2-position ones are P/N 7101 and the
>momentary are P/N 7105. You can order them from www.IMSAI.net for
>between $11.00 and 12.00 a piece.
That's anywhere from $3-5 more than Digikey and they are an expensive
source! I usually get them for under $7 in unit lots.
NOTE: the suffix for those switches is important as they come in
differnt mountings and with differing solder posts.
Allison
>
>>
>>
>> --
>> Member of the toughest, meanest, deadliest, most unrelenting -- and
>> ablest -- form of life in this section of space, a critter that can
>> be killed but can't be tamed. --Robert A. Heinlein, "The Puppet
>> Masters"
>> -
>> Information is more dangerous than cannon to a society ruled by
>> lies. --James
>> M Dakin
>>
>>
I have a strongarm (sa1100) development board I'm about to pitch and I
thought maybe someone here would want it. It's an "Assabet" board I
think. It once booted linux. I have some of the original cdrom's also
and the serial cable and power supply. The devel board has ethernet,
usb, lcd and sound.
It seems like it's 10 years old anyway :-) I believe the part has been
EOL'd.
If you want it, send me you address and paypal postage. The box weighs
5lbs (.3 stone? :-)
-brad
Brad Parker
Heeltoe Consulting
+1-781-483-3101
http://www.heeltoe.com
Fellow Listmembers;
I've procrastinated ad-nauseam on this till it's way past time to address
the issue.... the Classiccmp server is in need of a hardware upgrade and/or
replacement. The main (but not only) issue: disc space and thus chassis
space. This produces a cascading set of dependencies :)
I realize the upgrade is not entirely due to the classiccmp list, some of it
is due to all the classiccmp related websites & ftp sites I have agreed to
host gratis for listmembers. I feel these provide a service to our community
and are worth providing the facilities for - but I want to make sure that is
all clear to everyone. As a side note, we're looking to do a substantial
bandwidth upgrade at the datacenter too - no doubt that will help traffic
matters on the classiccmp server.
I do not want to clutter up the normal list traffic with discussion of this
topic. Some here won't care about it and/or will be annoyed by all the
PeeCee hardware talk. Others will no doubt pull it into other unrelated
topics ;) As a result, I've created a new temporary list
(newserver at classiccmp.org) for this discussion. If anyone is interested in
participating in the hardware discussion about what to upgrade to, how best
to do it, etc. please join that list as soon as possible.
Yes, I'm completely capable of coming up with a configuration and putting it
into production without input... but there are various subjective things I'd
like others advice on besides just my own. Not to mention these upgrades
have usually been mostly funded through member donations so it's certainly
appropriate to get input from as many as possible who wish to talk about it.
My plan is to wait a week for anyone interested to get on the newserver
list. After that time, I will start the discussion by posting a detailed
list of exactly what is in the server, what issues I see with it, what I was
thinking as to solutions, etc. Then we can all discuss there. Once we come
down to how to proceed, perhaps we will post back to the main list for
everyone to be aware of - or should we just assume the interested parties
participated in the other list and just go with it? Don't answer that here,
it's a question for the other list traffic :)
Once a decision is reached, the temporary list will be decomissioned. I very
sincerely appreciate the input anyone may have there with regards to server
upgrade choices.
Best regards,
Jay West
