At 5:08 -0600 2/24/07, Chuck wrote:
>I wonder how much damage micrometeorites will do after a few
>millenia?
A reasonable question. At least the NH CD, and I thought the Voyager
one as well but could be wrong about that, are *under* the MLI
(insulation, about 15 sheets of metallized mylar alternating with a
very loose-weave mesh).
Most dust-grain-sized stuff will vaporize on the outer layer, then
get stopped by the inner layers. There is the possibility of
something pea-sized, but there's not just a lot of particles/cubic km
out in the Kuiper Belt and Oort cloud.
--
- Mark, 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
Laplink, Interlink and various clones all had this "remote install"
feature.
another mike
--------------Original Message:
From: "Mike van Bokhoven" <mike at ambientdesign.com>
Subject: Re: Restoring an XT - transfer problem
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Message-ID: <00c201c757d4$df79e760$0132a8c0 at fluke>
Content-Type: text/plain; charset="iso-8859-1"
> Hoping someone may be able to help - I've rebuilt an old Commodore PC 5
(XT
> compatible) back to working condition. Now the problem is getting anything
> on to the machine. None of my current machines are capable of supporting a
> 5.25" drive (of any flavour) so I can't easily transfer using that method.
> However, I have installed DOs 4.01 to the C= & it includes GW Basic & I
have
> linked up that machine & tyhe XP box via a null modem cable. So, all I
need
> is a simple terminal program on the XT & I'm pretty much in business.
> Problem is, all the GW Basic sources I've found for term progs are simply
> for text-based terms only, there are none around with simple transfer
> abilities (ie XModem or Kermit).
Now this is going to sound very vague, but perhaps it'll jog someone else's
memory. Once upon a time, it was possible to buy a serial file transfer
package that supported transfer to/from MS-DOS machines with no removable
media, e.g. machines with dead floppy drives, so long as they were able to
load MS-DOS or similar in some way. The process went something like this:
1. Make sure the two machines have compatible RS232 settings.
2. Connect the two machines with a null-modem cable.
3. On the driveless machine ('client'), type a short command that
effectively mapped the serial port to the console.
4. On the 'server' machine, run the transfer software, selecting the option
that sends the software to the client machine. The server would then upload
and start the client software - instant networking.
The downside - I don't remember which package it was that did this. LapLink?
XTLink? Google wasn't helpful in this case.
Mike.
No idea whether this is true or not, as it
was in part of a spam email, but because of
the TI link, I thought it might be of some
interest here (and perhaps someone can confirm
whether it's true or not?):
In 1960 an engineer working for a watch
company in Switzerland discovered that a small
crystal would vibrate at a constant rate. He
found this was so accurate that it could be
used to calibrate time so he took it to
company management and said it would make
an entirely new kind of watch that had no
springs and no gears. They could not imagine
who would want such a thing. Swiss watches
dominated world commerce. They did not even
bother to patent it.
The inventor took his new idea to a
commercial trade show, set up his booth and
tried to interest manufacturers to produce
his new kind of watch. Of the thousand people
only 2 were willing to try it ?
Texas Instruments and Seiko Corp. of Japan.
Ten years later the Swiss manufacture of
watches had shrunk to 10% of it former
production.
It took a complete change of thinking to
produce this new model because most people
are rooted in the old way and are reluctant
to change. The new model, the new paradigm
is refused.
Regards,
Andrew D. Burton
aliensrcooluk at yahoo.co.uk
Roger Holmes wrote:
I wonder which was the first computer with a real time clock, what
year and how
it was implemented. I imagine it was invented primarily for charging
for computer
time. I think the first machine I programmed, the IBM 7094 had one
because if
your job ran over its limit time (30 seconds IIRC), the job was
aborted. Unless that
was the operator looking at his wrist watch!
Roger Holmes
---------------------
The earliest I worked on was the CDC 1604, shipping in 1959. It used a 1ms
increment and a 48 bit count. Like you mention, it was used for job
control. But most of the early customers were military and used it for data
logging from various experiments. That's a nice way of saying they made
bombs and exploded them.
Billy
---------------Original Message:
From: "Lance Lyon" <lance.w.lyon at gmail.com>
Subject: Re: Restoring an XT - transfer problem
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Message-ID: <006301c757c0$ce77e610$0100000a at pentium>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hiya Chuck,
From: "Chuck Guzis" <cclist at sydex.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Saturday, February 24, 2007 1:10 PM
Subject: Re: Restoring an XT - transfer problem
> Why not simply hook up a 3.5" drive (DSHD is fine)? Get a DS2D
> diskette by covering over the density aperture in a DSHD diskette and
> format it up to 720K on your modern PeeCee using "format a: /n:9
> /t:80". Write whatever you want to it and let the Commo read it.
>
The PC5 will not recognise a 3.5" disk, even using driver.sys to set the
parameters it always gives a "device
not ready" error.
> Alternatively, hook up a 360K 5.25" to your modern PeeCee and call it
> a 1.44MB drive--format the blanks in your PC5 and your modern PC will
> write them just fine.
No go, 3 different machines, 5 different drives - all the same error -
"Sector not found".
cheers,
Lance
// http://www.commodore128.org
Commodore 128 forums & more! //
---------------Reply:
Grab a free copy of the old DOS LapLink 3 or 4 off the 'Web; that oughta do
the trick.
mike
Does anyone have a checksum for the PDP-11/53 ROMs? I'm converting
an M7554-SD. The ROMs from M7554-04, I think, are the ones I need.
According to Jonathan Engdahl's page, they are 261E5.hex and 262E5.hex.
I have a set of images already, and have one system running with
them, but my EPROM-burner-guy is having trouble with 262E5.hex. I want
to make sure I have a good image before I tell him to try harder. :)
Thanks!
Doc
>
>Subject: Re: Restoring an XT - transfer problem
> From: Fred Cisin <cisin at xenosoft.com>
> Date: Fri, 23 Feb 2007 19:34:52 -0800 (PST)
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>> Or any other suggestion ?
>
>didn't 4.0x include something called "interlink"?
>
Not sure of 4.0 but 5.0 and 6.X included it.
Allison
---------------Original Message:
From: "Joachim Thiemann" <joachim.thiemann at gmail.com>
Subject: Re: Wanted: CBM-to-IEEE cable
On 23/02/07, M H Stein <dm561 at torfree.net> wrote:
> ---------------------
> Not mine, and not cheap, but if you're desperate enough:
>
> www.jppbm.com
>
> mike
Is that guy still around? I tried sending an email - I want to buy one
of the 1581 kits - but didn't get a reply... Supposedly, he was at
World of Commodore in december.
Joe.
-----------------Reply:
Yes; as a matter of fact I was just talking with him at a meeting a week
ago (and he does still have 1581 kits).
mike
"Glen Slick" wrote:
>On 2/23/07, Doc Shipley <doc at mdrconsult.com> wrote:
>> Does anyone have a checksum for the PDP-11/53 ROMs? I'm converting
>> an M7554-SD. The ROMs from M7554-04, I think, are the ones I need.
>> According to Jonathan Engdahl's page, they are 261E5.hex and 262E5.hex.
>>
>
>You can try the straight .BIN files instead of .HEX files.
>
>http://www.dunnington.u-net.com/public/DECROMs/23-261E5.bin
>http://www.dunnington.u-net.com/public/DECROMs/23-262E5.bin
I used those images and they worked fine. My work directory looks like
this:
-rw-rw-r-- 1 brad brad 16384 Jul 14 2005 23-261E5.bin
-rw-rw-r-- 1 brad brad 32768 Jul 21 2005 23-261E5-doubled.bin
-rw-rw-r-- 1 brad brad 16384 Jul 14 2005 23-262E5.bin
-rw-rw-r-- 1 brad brad 32768 Jul 21 2005 23-262E5-doubled.bin
I'm not sure what the "doubled" files are however. Maybe I used a 27256
instead of a 27128. I think that's the case.
linux cksum says:
3162496093 16384 23-261E5.bin
1853346231 16384 23-262E5.bin
3422894537 32768 23-261E5-doubled.bin
961258351 32768 23-262E5-doubled.bin
-brad
> I have see some disk drives on your homepage and want to ask you if
> sale the magnetic and coils from the old diskdrives?
no
--al (who is trying to find a working CDC 9766 right now)
