Commodore 64/64C?

From: Jim Brain <brain_at_mail.jbrain.com>
Date: Tue Dec 15 22:27:23 1998

I have done this on a 64C case here. It requires a little surgery (minor),
but nothing serious.

The 64 MB is preferred since it has sockets and uses a 6581 SID, not the cost
reduced 8580 SID that has broken filters.

Jim

In article <c=USa=IBMX400p=HFCl=EXCHANGE01-980915164143Z-198853_at_exchange01.hersheys.com>,
"Salzman, Jeff" <jsalzman_at_hersheys.com> wrote:
>Mostly, there are some motherboard design difference between the two.
>However, it is known that you can actually swap the boards between the
>two if you preferred one case over another and have a bad unit. There
>were at least 4 different board revisions, so some boards may not move
>to another case. Another thing you might notice is the power supply
>connector is different. There was a connector redesign between the newer
>(aka 'flat C64') and older (aka 'Breadbox') C64's. The flat 64 has a
>square connector where the breadbox 64 has a round one. The flat 64 also
>has a different component layout due to IC consolidation. Maybe those
>newer chip designs are what's overheating your system. Or it could be
>the fact that the parts are closer to the outside of the case.
>
>I'm toying with the idea of swapping boards in my systems. I only heard
>that it can be done. I want a functional version of each and I have 2
>working flat units and 7 dead breadboxes (of which I salvaged parts from
>to get an SX-64 working). For my display units, I would like one of each
>design in working order.
>
>Hope this helps,
>Jeff Salzman
>
>>I was wondering, what is the difference between a regular Commodore 64 and a
>>64C? I've got one of each, and everything seems identical other than that the
>>64C looks like a 128. (Well, one other difference is that the 64C overheats
>>after about an hour or so...)
>>
>

-- 
--
*********** A NOTE FROM JIM BRAIN ********************************************
I would like to apologize for the lateness in replying to your letter or note.
Please do not take offense at the lack of a reply from myself.  The Brain
family has had some very extenuating circumstances throughout the 1998 year.
At the close of 1997, my wife became gravely ill while in her first trimester
of pregnancy with our son.  To support my wife's needs, I switched the
www.jbrain.com web site, ftp.jbrain.com FTP site and mail.jbrain.com
listserver to autopilot and discontinued all online activities, including FAQ
maintenance, responses to email requests, and other demands for my time.  I
also shut down Brain Innovations, Inc., our side business.
My wife's health improved by March of 1998, and in June 19, 1998, Brent 
Harrison Brain came into the world at 7:50 AM.  However, at 5 pounds, 3
ounces, Brent was 5 weeks early and a bit of a preemie.  We were very ecstatic
at the arrival.
A few weeks later, Brent, who had not learned how to nurse very well, weighed
in at 4 pounds and was sent to the neonatal ICU to stabilize his weight and
regain lost fluids.  The cause was his underdeveloped "sucking" instinct,
which is common in preemies.  Brent quickly stabilized and he was sent home
within 3 days.  I am happy to report that Brent has now learned all he needed
to get food and now tips the scale at 15 pounds.
Abaout this time, my commercial Internet Service Provider upgraded some
application libraries on my server (which I share with many others) and broke
the entire www.jbrain.com.  It took from June 1 to July 1 to fix the problem,
which eventually led to the migration of the jbrain.com domain to a new server
with upgraded scripting tools, rendering the old www.jbrain.com unusable.  I
then started working on a replacement.
I was able to get email and mailing lists back in operation before my wife and
I (Brent was at home with my parents) were involved in a broadside collision
while on our first "date" after the birth.  I was left unhurt, but my wife
sustained bruises and broken bones.  Due to the breastfeeding, she was unable
to take adequate medication, and her immobility made taking care of our son a
impossible task.  With some regret, I packed her and my son off with my
parents to drive 10 hours to IL, where my wife's mother would care for both of
them.  I stayed at our house to direct the replacement of our totaled Saturn
automobile
In early August, my wife and son returned to Nebraska, but it took a few
months for my wife injuries to heal to the point where she could care for our
son during the day alone and withut discomfort.
The events of the past 7 months caused us both to "withdraw" from the world in
some respects.  I have let email and web maintenance go without intervention,
while we've both been slow to start back into any projects or start up our
side business again.
However, we are finally feeling better able to tackle the many demands on our
time and the many hobbies we enjoy.  My hope is that we can start out 1999
with a clean slate and forget about our many trials in 1998.  We will, though,
always remember 1998 as the year our son came to us (but I hope that is all we
remember from it).  I am happy to report that as of December 7, 1998, Brent is
doing great, my wife is hoping to make a full recovery (though her back and
feet still hurt occasionally).  I am finally finishing some projects around
the house and finding time and the energy to restart enjoying my hobbies and
my online presence.
As I write this, I am preparing to work my wife through 9 months of
accumulated email from mail.jbrain.com.  If you have sent me more than one
message, please excuse the redundancy of the note when you receive it 
additional times.  For simplicity sake, this is my .signature file for the 
next few weeks.  
We appreciate the responses we have received from folks during our trials.
However, please do not feel it necesary to respond to this message, at least
not for a few weeks.  Doing so now will simply put more email in my inbox, of
which I have plenty at present.
Merry Christmas to everyone, and look for the Brain Christmas Letter on our
web site.
Jim Brain (and family)
--
Jim Brain, Embedded System Designer, Brain Innovations, Inc. (BII)(offline sig)
bii_at_mail.jbrain.com "Above views DO reflect my employer, since I'm my employer"
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!      -Me-
BII Home: http://www.jbrain.com          CBM Info: http://www.jbrain.com/vicug/

Received on Tue Dec 15 1998 - 22:27:23 GMT