30 Dec
2004
30 Dec
'04
9:48 p.m.
is this the small 50 pin cage thing made by Northern
Digital?? or the
Superpet?
Mine has a 6502 and 6809 I think - the switch powered
one cpu or the other...
h
Hi Heinz,
Yes - this is the little box made by Northern Digital - it was apparently
developed at U or Waterloo. There is only a 6809 inside, and no selection
switch. (My SuperPET does have dual CPUs and a switch to select).
Do you have one with dual CPU's? - Any additional information?
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
31 Dec
31 Dec
3:03 a.m.
New subject: Completely original vs. upgraded
I have a small NeXT collection (getting bigger ;-)) and one thing I was
wondering about was the need to maintain originality. For example, I
have one NeXT cube with an interesting pedigree (it has NeXT asset tags
on it, and some interesting bits), but it's a 68030 motherboard... the
low end cube. I have a NeXT Turbo board I can put into the case, but
then the unit wouldn't be "original" any more... does that matter?
2 Jan
2 Jan
4:40 a.m.
New subject: Completely original vs. upgraded
On Fri, 31 Dec 2004, Gavin Thomas Nicol wrote:
I have a small NeXT collection (getting bigger ;-))
and one thing I was
wondering about was the need to maintain originality. For example, I
have one NeXT cube with an interesting pedigree (it has NeXT asset tags
on it, and some interesting bits), but it's a 68030 motherboard... the
low end cube. I have a NeXT Turbo board I can put into the case, but
then the unit wouldn't be "original" any more... does that matter?
Typically, yes. You will have altered the provenance of the machine. If
you appreciate the system from a functional point of view then this
doesn't matter. But if you appreciate the machine from a historical point
of view then it does.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
4:54 a.m.
New subject: Completely original vs. upgraded
On Fri, 2004-12-31 at 12:03 -0500, Gavin Thomas Nicol wrote:
I have a small NeXT collection (getting bigger ;-))
and one thing I was
wondering about was the need to maintain originality. For example, I
have one NeXT cube with an interesting pedigree (it has NeXT asset tags
on it, and some interesting bits), but it's a 68030 motherboard... the
low end cube. I have a NeXT Turbo board I can put into the case, but
then the unit wouldn't be "original" any more... does that matter?
Personally in situations like that I don't like doing anything that
can't be put 'right' again at a later date - so if it involves drilling
holes in cases and things I wouldn't do it, but if it's just a board
swap I would (and hang on to the original board so I could always put
things back how they were)
cheers
Jules
5:02 a.m.
New subject: Completely original vs. upgraded
----- Original Message -----
From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Sunday, January 02, 2005 1:54 PM
Subject: Re: Completely original vs. upgraded
On Fri, 2004-12-31 at 12:03 -0500, Gavin Thomas Nicol
wrote:
That's the way I feel about it also, swapping boards is no problem as long
as you keep the older ones and can put it back together the way you found
it.
I even keep the original HD intact on the shelf and use a newer one. It only
really matters if you intend to resell the machine at a later date, or if
there was something unique to the machine in the first place (pre production
machine, custom prototype, etc).
I have a small NeXT collection (getting bigger
;-)) and one thing I was
wondering about was the need to maintain originality. For example, I
have one NeXT cube with an interesting pedigree (it has NeXT asset tags
on it, and some interesting bits), but it's a 68030 motherboard... the
low end cube. I have a NeXT Turbo board I can put into the case, but
then the unit wouldn't be "original" any more... does that matter?
Personally in situations like that I don't like doing anything that
can't be put 'right' again at a later date - so if it involves drilling
holes in cases and things I wouldn't do it, but if it's just a board
swap I would (and hang on to the original board so I could always put
things back how they were)
cheers
Jules
5:14 a.m.
New subject: Completely original vs. upgraded
I really don't see a problem with upgrades. I'd rather see a machine
upgraded and in use than a "correct" one that is a closet or warehouse
queen. That being said, I never upgrade one if it alters the physical
structure of the machine or involves cutting, grinding or drilling.
As far as my NeXT collection, I replace drives, add memory, generally
bring it up the maximum it could have been for daily use. I'm not a
"ricer" that adds cold cathode lighting or led illuminated fans with
glass portholes in the case. The closest I have come to something like
that was installing a blue LED in the light bar of my Octane to replace
the stupid little incandescent lamps that die almost immediately.
As far as your cube with NeXT property tags is concerned, I'd probably
set that one up as an original 68030 cube and pick up another shell cube
off ebay for the turbo board. One can never have too many cubes you
know. ;-)
>>I have a small NeXT collection (getting bigger
;-)) and one thing I was
>>wondering about was the need to maintain originality. For example, I
>>have one NeXT cube with an interesting pedigree (it has NeXT asset tags
>>on it, and some interesting bits), but it's a 68030 motherboard... the
>>low end cube. I have a NeXT Turbo board I can put into the case, but
>>then the unit wouldn't be "original" any more... does that matter?
>>
>>
--
www.blackcube.org The Texas State Home for Wayward and Orphaned Computers
8:11 a.m.
New subject: Completely original vs. upgraded
I have a small NeXT collection (getting bigger ;-)) and one thing I was
wondering about was the need to maintain originality. For example, I
have one NeXT cube with an interesting pedigree (it has NeXT asset tags
on it, and some interesting bits), but it's a 68030 motherboard... the
low end cube. I have a NeXT Turbo board I can put into the case, but
then the unit wouldn't be "original" any more... does that matter?
I am, perhaps, unusual in that I _use_ my classic computers. In fact I
don't own a computer that isn't a classic by the terms of this list...
I am also primarily a hardware person.
I don't have any problem with _reversable_ changes to machines, but I do
also like to keep the original electronic design unaltered as far as
possible. This includes power supplies, BTW (I object to replacing linear
supplies with switchers, etc). I don't have any problems with plugging in
expansion cards (even ones that aten't contemporary with the machine,
provided they work -- e.g. putting a recent ISA card into an orignal
PC/AT). I ahve no problems with soldering in extra components (in fact,
if I could find 32 off 1103 DRAMs and a couple of the level shifter ICs,
I'd be soldering them into my HP9830 tonight ;-)) I don't like drilling
holes, but I will bend the rules for small screw holes and the like
What I won't do is majorly change the design of the machine. I wouldn't,
for example, replace the internals of one of my PDP11s with a PC running
a PDP11 emulator.
In the case of a motherboard-swap type of upgrade. I might well do it (it
would depent on a lot of factors), but I would keep the original board,
labelled, so the machine could be returned to the original state if I
wanted to.
-tony
31 Dec
31 Dec
3:06 a.m.
New subject: Cleaning motherboards...
Apart from dusting with compressed air and camel hair brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
2 Jan
2 Jan
4:40 a.m.
New subject: Cleaning motherboards...
On Fri, 31 Dec 2004, Gavin Thomas Nicol wrote:
Apart from dusting with compressed air and camel hair
brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
Good question. I didn't have any luck with contact cleaner and would love
to hear suggestions.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
6:22 a.m.
New subject: Cleaning motherboards...
On Fri, 31 Dec 2004, Gavin Thomas Nicol wrote:
Well.... dishwasher. But I've said this before, so check the archives.
Apart from dusting with compressed air and camel
hair brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
Good question. I didn't have any luck with contact cleaner and would love
to hear suggestions. 
6:35 a.m.
New subject: Cleaning motherboards...
It was written...
> Good question. I didn't have any luck with
contact cleaner and would
> love
> to hear suggestions.
I've used contact cleaner, in some really grungy power supplies with great
results. What about it didn't work well for you?
Jay
7:39 a.m.
New subject: Cleaning motherboards...
On Sun, 2 Jan 2005, Jay West wrote:
It was written...
The grime I was trying to remove was so set in that it wasn't affected at
all by the contact cleaner I use.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
> Good question. I didn't have any luck
with contact cleaner and would
> love
> to hear suggestions.
I've used contact cleaner, in some really grungy power supplies with great
results. What about it didn't work well for you? 
8:25 a.m.
New subject: Cleaning motherboards...
Well.... dishwasher. But I've said this before, so
check the archives.
Probably a FAQ top 10. But what happened to the FAQ?
http://www.classiccmp.org/faq.html
"be warned: the... FAQ hasn't been updated since 1997"
Actually it's kinda sorta in there:
http://www.classiccmp.org/oldfaq.txt
"I find a cycle through the dishwasher does a really nice job on keyboards."
I don't think the rules preclude discussing the FAQ until 2007.
John A.
8:54 a.m.
New subject: Cleaning motherboards...
On Jan 2, 2005, at 5:25 PM, John Allain wrote:
Well, I did check the faq, and then went out and did some more
searching and came back with conflicting messages... so I figured it'd
be worthwhile asking Yet Again :-)
Well....
dishwasher. But I've said this before, so check the archives.
Probably a FAQ top 10. But what happened to the FAQ? 
8:58 a.m.
New subject: Cleaning motherboards...
On Fri, 31 Dec 2004, Gavin Thomas Nicol wrote:
> Apart from dusting with compressed air and camel hair brushes, which
> removes the dust from circuit boards, are there any recommendations for
> cleaning the general grimy file from motherboards?
On Sun, 2 Jan 2005, Vintage Computer Festival wrote:
Good question. I didn't have any luck with
contact cleaner and would love
to hear suggestions.
I use: warm, soapy water and a soft clean paintbrush. Rinse it
with lots of water, shake it off, let dry for a day or two. No
big deal.
This is an old thread, there are many other suggestions,
all good, including kitchen dishwashers, though that seems
a bit overkill for "normal" PCB dirt, cigarette smoke, dust,
etc. Unless you have a lot of Data General 15"x15" boards to do,
then it's the only sensible solution :-)
9:09 a.m.
New subject: Cleaning motherboards...
Tom Jennings wrote:
I use: warm, soapy water and a soft clean paintbrush.
Rinse it
with lots of water, shake it off, let dry for a day or two. No
big deal
This is an old thread, there are many other suggestions,
all good, including kitchen dishwashers, though that seems
a bit overkill for "normal" PCB dirt, cigarette smoke, dust,
etc. Unless you have a lot of Data General 15"x15" boards to do,
then it's the only sensible solution :-)
However chorinated water can wreck havoc on electrolytic capacitors.
Also in my aparnment I have room for a dishwater or a vintage computer...
Give me a moment to think here... :)
11:09 p.m.
New subject: Cleaning motherboards...
On Sun, 02 Jan 2005 16:09:44 -0700, woodelf <bfranchuk(a)jetnet.ab.ca> wrote:
Tom Jennings wrote:
I've mentioned this before on the list, but it bears repeating for
those who might not have seen it first time round:
Servisol "Foaming Cleanser" is the best thing I've seen for cleaning
electronics - it's most often used on the outside of cases, but it
certainly doesn't do the innards any harm IME (and a chap I know who
runs a test/measurement dealership uses a LOT of this stuff - he buys
it by the case on a regular basis).
I'd be wary of it possibly taking delicate screen print off PCBs
(check first on a piece of text you can afford to lose) but not about
much else.
Here is a link to the product for sale:
http://www.ballistol.co.uk/html/product_foam_cleanser.html
and here is the manufacturer's own page about it:
http://servisol.co.uk/data/FC30_data.htm
Ed.
I use: warm, soapy water and a soft clean
paintbrush. Rinse it
with lots of water, shake it off, let dry for a day or two. No
big deal
This is an old thread, there are many other suggestions,
all good, including kitchen dishwashers, though that seems
a bit overkill for "normal" PCB dirt, cigarette smoke, dust,
etc. Unless you have a lot of Data General 15"x15" boards to do,
then it's the only sensible solution :-)
However chorinated water can wreck
havoc on electrolytic capacitors.
Also in my aparnment I have room for a dishwater or a vintage computer...
Give me a moment to think here... :)
3 Jan
3 Jan
12:16 a.m.
New subject: Cleaning motherboards...
On Mon, 2005-01-03 at 13:09 +0000, listmailgoeshere(a)gmail.com wrote:
Servisol "Foaming Cleanser" is the best
thing I've seen for cleaning
electronics - it's most often used on the outside of cases, but it
certainly doesn't do the innards any harm IME (and a chap I know who
runs a test/measurement dealership uses a LOT of this stuff - he buys
it by the case on a regular basis).
I'd be wary of it possibly taking delicate screen print off PCBs
(check first on a piece of text you can afford to lose) but not about
much else.
Watch out for any ceramic ICs. It doesn't take much at all for the black
lettering to come off the gold portions!
4 Jan
4 Jan
10:28 a.m.
New subject: Cleaning motherboards...
I use Safewash 2000 from Electrolube, specifically designed to remove heavy
flux/dirt from pcb's.
It comes in an aerosol can with an integral brush - it also foams which is
the clue to a better cleaning action it appears.
http://www.computronics.com.au/electrolube/aqclean/
In case of doubt - data sheet here :
http://www.cirrus.it/pdf/262_1390.PDF
Geoff.
----- Original Message -----
From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Monday, January 03, 2005 2:16 PM
Subject: Re: Cleaning motherboards...
On Mon, 2005-01-03 at 13:09 +0000,
listmailgoeshere(a)gmail.com wrote:
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.6.8 - Release Date: 03/01/05
Servisol "Foaming Cleanser" is the best
thing I've seen for cleaning
electronics - it's most often used on the outside of cases, but it
certainly doesn't do the innards any harm IME (and a chap I know who
runs a test/measurement dealership uses a LOT of this stuff - he buys
it by the case on a regular basis).
I'd be wary of it possibly taking delicate screen print off PCBs
(check first on a piece of text you can afford to lose) but not about
much else.
Watch out for any ceramic ICs. It doesn't take much at all for the black
lettering to come off the gold portions!
--
No virus found in this incoming message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.6.8 - Release Date: 03/01/05
3 Jan
3 Jan
6:44 a.m.
New subject: This is not a plug! (was Re: Cleaning motherboards...)
----- Original Message -----
From: Vintage Computer Festival <vcf(a)siconic.com>
On Fri, 31 Dec 2004, Gavin Thomas Nicol wrote:
Many contact cleaners leave a lubricating residue and are
too wimpy to deal with real grease and gunk. We sell some stuff
called GC Bath (ingredients: heptane, isopropyl alcohol, carbon
dioxide) which I have used on some fairly nasty boards with good results.
Got rid of the crap, but didn't eat the board.
Glen
0/0
Apart from dusting with compressed air and camel
hair brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
Good question. I didn't have any luck with contact cleaner and would love
to hear suggestions. 
2 Jan
2 Jan
4:45 a.m.
New subject: Cleaning motherboards...
I sometimes use water to blow away dust. After that, I use a fan to
blow the board for hours.
vax, 9000
On Fri, 31 Dec 2004 12:06:40 -0500, Gavin Thomas Nicol <gtn(a)rbii.com> wrote:
Apart from dusting with compressed air and camel hair
brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
5:20 a.m.
New subject: Cleaning motherboards...
----- Original Message -----
From: "Gavin Thomas Nicol" <gtn(a)rbii.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Friday, December 31, 2004 11:06 AM
Subject: Cleaning motherboards...
Apart from dusting with compressed air and camel hair
brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
Soap and water, put it in your dishwasher with cool dry. When it's finished
rinsing remove it and blow dry.
Randy
www.s100-manuals.com
8:12 a.m.
New subject: Cleaning motherboards...
Apart from dusting with compressed air and camel hair brushes, which
removes the dust from circuit boards, are there any recommendations for
cleaning the general grimy file from motherboards?
I find propan-2-ol (isopropanol, isopropyl alcohol) and kitchen paper
quite efficient
-tony
7:25 p.m.
New subject: Cleaning motherboards...
Coming in a little late...but here's my 0.02 $currency_unit..
I use those alcohol-based multi-cleaner (the ones for car-use; mine is
from Johnson), a toothbrush, and a wet-vacuum cleaner..
1. Spray multi-cleaner liberally on MB.
2. Brush vigorously with toothbrush, taking care of fragile components.
3. Use vacuum cleaner to suck up the residue grime/dust/dirt soup.
I find it very effective and it leaves a very nice clean lemony (depends
on the cleaner of course) smell on the MB/PCBs.. :-)
/wai-sun
7063
days inactive
7067
days old
23 comments
18 participants
participants (18)
-
acme＠gbronline.com -
allain＠panix.com -
ard＠p850ug1.demon.co.uk -
bfranchuk＠jetnet.ab.ca -
dave04a＠dunfield.com -
geoffreythomas＠onetel.com -
gtn＠rbii.com -
james＠jdfogg.com -
jrice54＠vzavenue.net -
julesrichardsonuk＠yahoo.co.uk -
jwest＠classiccmp.org -
listmailgoeshere＠gmail.com -
randy＠s100-manuals.com -
teoz＠neo.rr.com -
tomj＠wps.com -
vax9000＠gmail.com -
vcf＠siconic.com -
waisun.chia＠hp.com