some pcs didnt have dma. Tandy 1000...IBM
Peanut...Sanyo MBC-5xx too IIRC...
--- cctalk-bounces at classiccmp.org
<bfranchuk at jetnet.ab.ca> wrote:
> Tony Duell wrote:
>
> > I thought every PC (maaning IBM compatible) did
that. The floppy system
> > in the PC. XT and ZT has a DMA channel associated
with it. You ask it to
> > read some secotyors from the current track, it
does so and transfers the
> > data into memory, then gives you an iterrupt when
it's done.
> Well on some computers, like the COCO the IRQ only
is used
> to end the cpu polling loop for the floppy.Since the
default
> OS is CP/M err MSDOS I expect the hardware is not
used effectivly.
> >
> > I know for a fact that other tasks carry on
running on this (slow) linux
> > machine when it's doing floppy drive operations.
> >
> > -tony
>
____________________________________________________________________________________
Looking for earth-friendly autos?
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I sent a longer email to Al off-list, but I wanted to let the rest of you
know about something the company I work for (Kristine Fallon Associates) is
doing. We did a study for the Art Institute of Chicago about how their
Department of Architecture and Design could collect and preserve the
"digital design data" (CAD files, images, Poiwerpoints, etc.) that
architects are using more and more. Our report is online at
http://www.artic.edu/aic/collections/dept_architecture/ddd.html. We are now
just about finished creating a working prototype archival system. I'm
programming a Web client for entering the metadata and a programmer for the
AIC is doing the back end. We are using the DSpace archive software
(developed by MIT and HP) as the storage mechanism.
Our approach is certainly not directly applicable to preserving software --
we suggest using PDF's as wrappers for a lot of data -- but I think the
report addresses a number of important, and common, issues.
Bob
+++++++++++++++++
Message: 18
Date: Mon, 5 Feb 2007 15:54:47 -0500
From: "William Donzelli" <wdonzelli at gmail.com>
Subject: Re: Preservation of correspondence
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Message-ID:
<e1d20d630702051254l6a6d3c01qdae2375b462c7c64 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>One of the things I've been disturbed to discover is CHM appears to be one
>of the few institutions who are attempting to archive software.
CHM is a fairly unique institution, that is why. There are only a
handful of computer museums that are run like museums. Many "computer
museums" are just glorified users groups, informal circles of friends,
or just guys that like hoarding machines and docs.
--
Will
_________________________________________________________________
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you know
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Hi,
a friend would like to buy an AT&T 3B1 (7300) for her husband. She
asked me to help. Apparently he has fond memories of them.
I've seen these (long ago) and used one once but really have no clue.
Are they obtainable? Anyone have one they want to sell?
Any pointers or advice appreciated... thanks!
-brad
Brad Parker
Heeltoe Consulting
+1-781-483-3101
http://www.heeltoe.com
> What do government and corporate data archives do?
> Surely a long-lived company like IBM has already had to deal with this
> problem?
They deal with the problem by throwing things away. There are essentially
no corporate archives of software older than a few decades. This goes back
to the discussions here a while back about companies discarding software
after a product's life ends.
One of the things I've been disturbed to discover is CHM appears to be one
of the few institutions who are attempting to archive software.
Corporate archives today are essentially all paper or microform. Trying to
deal with digital content is not a solved problem there. If you look at the
literature, they are only thinking in terms of documents, not software, with
the exception of trying to preserve some subset of software needed for document
recovery.
Quoth Chuck:
> I just had a thought about another possible alternative for write-
> protect tabs.
>
> How about the foil tape used in the construction trades, such as 3M
> 425? I seem to recall that the adhesive on this stuff is pretty
> heavy-bodied and should stick well, but be easy to remove.
You could also use book tape if it's a mechanical sense system.
Very heavy, quite sticky plastic.
Take a look on VCM ... there is one on there now.
http://www.vintagecomputermarketplace.com/bid.cfm?ad=2707
> a friend would like to buy an AT&T 3B1 (7300) for her husband. She
> asked me to help. Apparently he has fond memories of them.
>
> I've seen these (long ago) and used one once but really have no clue.
> Are they obtainable? Anyone have one they want to sell?
>
> Any pointers or advice appreciated... thanks!
>
> -brad
John,
I have a real Industrial-11 console I could check with, if you can
set up a version of the picture with that console.
Michel
----- Original Message -----
From: "John A. Dundas III" <dundas at caltech.edu>
Date: Friday, February 2, 2007 1:53 pm
Subject: Re: PDP-11 GUI console, was Re: Foonly
> At 3:17 PM -0500 2/2/07, Bill Pechter wrote:
> >I'd love to see the Dec DataSystem 570 graphic...
>
> Easy: just run the program, use the Preferences menu item, select
> Console, click on DataSystem 570, whoosh, the console window will
> change.
>
> BTW, someone with a real 570, or an Industrial-11, can make sure I
> got those right. I have only (!) a "regular" one to measure against.
>
> John
>
> If anyone is desperately looking for tapes in that area of interest, let me
> know and I'll make a list of what's there.
An inventory with part numbers and date codes would be useful to find out
what still exists. I need to bug Jeff Moffatt about this as well.
--- Ade Vickers <javickers at solutionengineers.com> w
rote:
> Right at the end of the latest Egg Money advert, i
s
> that a TRS Model 3 or
> Model 4?
>
> This link should be viewable for a while:
>
> http://www.visit4info.com/preview-flash.cfm?vm=0&t
ype=2&adid=41634
>
>
> Also, a previous ad has featured a CBM PET shaped
> "mockuter" (mock
> computer), with the tape deck replaced with an
> oversized trackball:
> http://www.youtube.com/watch?v=M0nZwyua8Ao
>
>
> Cheers,
> Ade.
>
hehe, I saw the first advert only the other
day and wondered what it was. Unfortunately
the writing was too blurred by the disk drives :(
I recall the PET one too. That was showing
around the time of The IT Crowd (UK, Channel 4) on t
errestrial TV. I spotted what looked to
be a real PET in the corner by the entrance
in that.
That was funny, and even more funnier for
computer enthusiasts (I assume we don't call
ourselfs computers geeks/nerds? *ducks*).
Regards,
Andrew D. Burton
aliensrcooluk at yahoo.co.uk
--- Chuck Guzis <cclist at sydex.com> wrote:
> On 4 Feb 2007 at 0:24, Tony Duell wrote:
>
> > Incidentally, I heard a news item a few days ago
> that 'PC World' (a chain
> > of computer shops in the UK) will no longer be
> selling floppy disks once
> > their current stocks run out. Apparently USB
> sticks store more data and
> > are more conveneint (well, the first is true, bu
t
> irrelevant if you only
> > need to store a few kilobytes, the second is
> definitely false if your
> > machine doesn't have a USB port).
>
> This is bad news from a preservation standpoint.
>
**>> snip <<**
>
> Cheers,
> Chuck
Yes, that's bad news for me too.
Whilst my Amiga's are down at present, I do
fully intend to get back to them and develop
more games/software for them.
All my stuff (so far) is only usually around
200-300KB in size. Without floppy disks I'd
have to burn them to CD, or upload them onto
the 'net (and then burn them to CD's using a
laptop - which I haven been meaning to get
for 2 years now, just for that purpose).
Whilst we won't run out of 3.5" disks just yet,
I was wondering how feasible would it be for
someone (probably fairly rich) to make
home-made disks?
Or perhaps someone would spot the hole in the
market and continue to make disks for those
of us that require them? The only problem with
that is of course, would we be buying enough
regularly (200,000 a year?) to make it worth
their time/effort/money?
I have a feeling it ain't looking good....
Regards,
Andrew D. Burton
aliensrcooluk at yahoo.co.uk
