14 Sep
2006
14 Sep
'06
3:09 a.m.
How many Amps should the fuse in the C64 be rated for? The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
14 Sep
14 Sep
2:20 p.m.
On Thursday 14 September 2006 03:09 am, Zane H. Healy wrote:
How many Amps should the fuse in the C64 be rated for?
The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
I don't think it really makes all that much difference. In working on maybe
some thousands of those things I can't recall if we ever did see a blown fuse
in there. Assuming you're talking about the one in the 64, and not the one
in the PS, which is another matter. If you have them handy already I'd use
the 1.5A. The only time it's going to blow is if there's a short somewhere,
and most of the failures I've seen in those machines are other things.
--
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
4:09 p.m.
On Thursday 14 September 2006 03:09 am, Zane H. Healy
wrote:
It's the one on the motherboard (original style 64). It's already blown and
I'm planning on trying to find a replacement later on today. I'm thinking
the local auto-parts store might actually be a good choice, as IIRC, that's
the same style fuse that my pickup uses (yeah, it's an old pickup).
Still not totally sure if it should be a 1A or 1.5A, as there seem to be
lots of conflicting answers on that. I guess I'll try to pick up a 1.5A.
Zane
How many Amps should the fuse in the C64 be rated
for? The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
I don't think it really makes all that much difference. In working on maybe
some thousands of those things I can't recall if we ever did see a blown fuse
in there. Assuming you're talking about the one in the 64, and not the one
in the PS, which is another matter. If you have them handy already I'd use
the 1.5A. The only time it's going to blow is if there's a short somewhere,
and most of the failures I've seen in those machines are other things. 
4:34 p.m.
On 9/14/2006 at 1:09 PM Zane H. Healy wrote:
It's the one on the motherboard (original style
64). It's already blown
and I'm planning on trying to find a replacement later on today. I'm
thinking
the local auto-parts store might actually be a good
choice, as IIRC,
that's
the same style fuse that my pickup uses (yeah, it's
an old pickup).
You may not be all that lucky in finding a 1.5A fuse at an auto parts
store. In my experience, they usually don't know about anything smaller
than 5 amps. OTOH, a Radio Scrap store would certainly have one.
4:51 p.m.
On Thu, 14 Sep 2006, woodelf wrote:
Chuck Guzis wrote:
Most likely fast. Slow-blow fuses are for applications that take a lot of
power on startup, then go down. For example, a linear power supply,
especially with big smoothing capacitors. Electric motors are like that
too.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
You may not be all that lucky in finding a 1.5A
fuse at an auto parts
store. In my experience, they usually don't know about anything smaller
than 5 amps. OTOH, a Radio Scrap store would certainly have one.
Now is that slow
or fast blow?
4:46 p.m.
You may not be all that lucky in finding a 1.5A fuse
at an auto parts
store. In my experience, they usually don't know about anything smaller
than 5 amps. OTOH, a Radio Scrap store would certainly have one.
Thanks for the tip! I was already planning at stopping at the local
Rat Shack store to pick up a couple sockets that I need anyway. I just
assumed the auto parts place would be a cheaper source.
Zane
5:04 p.m.
On Thursday 14 September 2006 04:09 pm, Zane H. Healy wrote:
Older than my '78 Dodge? :-) Those are likely to be 32V automotive fuses,
and not the 250V variety, though I doubt that'll make much difference.
On Thursday 14
September 2006 03:09 am, Zane H. Healy wrote:
It's the one on the motherboard (original style 64). It's already blown
and I'm planning on trying to find a replacement later on today. I'm
thinking the local auto-parts store might actually be a good choice, as
IIRC, that's the same style fuse that my pickup uses (yeah, it's an old
pickup). How many Amps should the fuse in the C64 be rated
for? The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
I don't think it really makes all that much difference. In working on
maybe some thousands of those things I can't recall if we ever did see a
blown fuse in there. Assuming you're talking about the one in the 64,
and not the one in the PS, which is another matter. If you have them
handy already I'd use the 1.5A. The only time it's going to blow is if
there's a short somewhere, and most of the failures I've seen in those
machines are other things. Still not totally sure if it should be a 1A or 1.5A,
as there seem to be
lots of conflicting answers on that. I guess I'll try to pick up a 1.5A.
Let me know offlist if you run into trouble, I'm sure that I have some of
those around. I can also probably get into the service manuals, which I
have around here someplace, and tell you for sure what it's supposed to be
and what might be the problem if it blows again.
--
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
6:13 p.m.
Older than my '78 Dodge? :-) Those are likely to
be 32V automotive fuses,
and not the 250V variety, though I doubt that'll make much difference.
Yes, it's a '72 Dodge. Since it's for a 9V power line, like you say 32V vs.
250V probably won't matter much. But I think I'll try Rat Shack first. If
I'd been thinking I probably could have raided my PDP-11 for a fuse last
night.
Zane
8:21 p.m.
On Thursday 14 September 2006 06:13 pm, Zane H. Healy wrote:
Good brand. 318?
Older than my
'78 Dodge? :-) Those are likely to be 32V automotive
fuses, and not the 250V variety, though I doubt that'll make much
difference.
Yes, it's a '72 Dodge. Since it's for a 9V power line, like you say 32V
vs. 250V probably won't
matter much.
Nope.
But I think I'll try Rat Shack first. If I'd
been thinking I probably could
have raided my PDP-11 for a fuse last night.
The auto parts store probably won't have much in the smaller sizes anyhow.
--
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
15 Sep
15 Sep
11:53 a.m.
At 8:21 PM -0400 9/14/06, Roy J. Tellason wrote:
The 250V 1.5A Fast Blow fuse did the trick, and the computer appears
to be working again. Didn't really have time to play with it last
night, other than to get it working and play a game of Missile
Command.
I do not like the new fuse packaging. I like the old fashioned little boxes.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
On Thursday 14 September 2006 06:13 pm, Zane H. Healy
wrote:
Good brand. 318?
No clue, it's runs and has 8 cylinders. :^) I have a shade-tree
mechanic that worries about the details. :^)
Older
than my '78 Dodge? :-) Those are likely to be 32V automotive
fuses, and not the 250V variety, though I doubt that'll make much
difference.
Yes, it's a '72 Dodge. Since
it's for a 9V power line, like you say 32V vs. 250V probably won't
matter much.
Nope.
But I think I'll try Rat Shack first. If
I'd been thinking I probably could
have raided my PDP-11 for a fuse last night.
The auto parts store probably won't have much in the smaller sizes anyhow. 
2:07 p.m.
And thusly were the wise words spake by Zane H. Healy
The 250V 1.5A Fast Blow fuse did the trick, and the computer appears
to be working again. Didn't really have time to play with it last
night, other than to get it working and play a game of Missile
Command.
With a Wico trackball, right? ;)
Cheers,
Bryan
P.S. Speaking of "different" controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
3:15 p.m.
And thusly were the wise words spake by Zane H. Healy
With a Epyx 500XJ :^( BTW, this stick gets my vote for worst ever. My wife
compared it to the original US X-Box controllers (we had to get her the
smaller Japanese controller).
The 250V 1.5A Fast Blow fuse did the trick, and the computer appears
to be working again. Didn't really have time to play with it last
night, other than to get it working and play a game of Missile
Command.
With a Wico trackball, right? ;) Cheers,
Bryan
P.S. Speaking of "different" controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
Good question, I'd love an arcade quality spinner, though I think it would
be better as a MAME interface. The C64 port of Missle Command I have is
fun, but the controls seemed really slow. One of my books details making
your own Joysticks and paddles. They have a design for a "motion
controlled" stick using mercury switches that looks rather interesting, but
I have to question how practical it is.
Zane
3:41 p.m.
And thusly were the wise words spake by Zane H. Healy
What?!? You don't like the 500XJ?! That is my fav joystick
(along with the Wico one that looks like it but is covered in soft
grey rubber). The only problem I had with the 500XJ was one of the
pieces inside breaking that holds the switch assembly in place after
furious joystick waggiing.. I loved how it fits your hand so well.
I think there was a motion controlled stick available at the
time but I am not sure how well it worked... Plus I think you would
lose the feed back you get from a normal joysick.
Wouldn't an interface for the spinner to a C64 be simpler
then a MAME inteface (USB?) since for the C64 you would just be
hooking up the POT X/Y?
Cheers,
Bryan
And thusly were the wise words spake by Zane H.
Healy
With a Epyx 500XJ :^( BTW, this stick gets my vote for worst ever. My wife
compared it to the original US X-Box controllers (we had to get her the
smaller Japanese controller).
The 250V 1.5A Fast Blow fuse did the trick, and the computer appears
to be working again. Didn't really have time to play with it last
night, other than to get it working and play a game of Missile
Command.
With a Wico trackball, right? ;) Cheers,
Bryan
P.S. Speaking of "different" controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
Good question, I'd love an arcade quality spinner, though I think it would
be better as a MAME interface. The C64 port of Missle Command I have is
fun, but the controls seemed really slow. One of my books details making
your own Joysticks and paddles. They have a design for a "motion
controlled" stick using mercury switches that looks rather interesting, but
I have to question how practical it is.
4:46 p.m.
What?!? You don't like the 500XJ?! That is my
fav joystick
(along with the Wico one that looks like it but is covered in soft
grey rubber). The only problem I had with the 500XJ was one of the
pieces inside breaking that holds the switch assembly in place after
furious joystick waggiing.. I loved how it fits your hand so well.
Hate it. Hate the way it fits my hand. I still haven't found my good Wico
ones (the ones with the long red stick). I might just see about heading up
to storage, yet again, this weekend to look. At least it shoudl be a lot
cooler up there as the weather has improved.
After playing Overloard/Supremacy on the C64, I really want to get my A500
back out :^) The interesting thing is, that game felt faster on my C64 than
the PC version ever did on my 386sx/16 and 486dx/33!
I think there was a motion controlled stick available
at the
time but I am not sure how well it worked... Plus I think you would
lose the feed back you get from a normal joysick.
You loose the feedback and just think about your hand getting bumped by
someone (or even sneezing).
Wouldn't an interface for the spinner to a C64 be
simpler
then a MAME inteface (USB?) since for the C64 you would just be
hooking up the POT X/Y?
No idea, haven't looked into either. I do rather like the one I have for
the Atari 5200 :^)
Zane
6:41 p.m.
I still haven't found my good Wico ones (the ones
with the long red stick).
Yeah, I like the Wico ones too. You can't have mine, nyah. :)
--
--------------------------------- personal: http://www.armory.com/~spectre/ ---
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- If your troubles are deep seated and of long-standing, try kneeling. -------
9:04 p.m.
New subject: Supremacy (was: Re: C64 Fuse?)
And thusly were the wise words spake by Zane H. Healy
Quite useful when you are trying to get under the Marshmallow man at
the end of Ghostbusters! ;)
I have an Atari 5200, but I don't think I have any controllers *or*
power supply. :( And from what I have read, the power supply for it
is special and does double duty. But I believe there are plans
on the internet that show you how to make your own supply for it.
Cheers,
Bryan
Hate it. Hate the way it fits my hand. I still haven't found my good Wico
ones (the ones with the long red stick). I might just see about heading up
to storage, yet again, this weekend to look. At least it shoudl be a lot
cooler up there as the weather has improved.
That is the reason I like the 500XJ soo much - cause it fits my hand
so perfectly! But the Wico bat is nice too - just not sure which
button is the best to use, the one on the base or the end of the bat?
And speaking of storage, I just moved into a much bigger place then I
was before so no I am moving all of my stuff that is in storage to my
new place... But I am finding I have more stuff then I though I did! :(
After playing Overloard/Supremacy on the C64, I really
want to get my A500
back out :^) The interesting thing is, that game felt faster on my C64 than
the PC version ever did on my 386sx/16 and 486dx/33!
I have only played Supremacy on the Amiga... It was soo fun to pump
up your men before attacking the planet, then lessening their
aggression level as the battle wore on.
I think there
was a motion controlled stick available at the
time but I am not sure how well it worked... Plus I think you would
lose the feed back you get from a normal joysick.
You loose the feedback and just think about your hand getting bumped by
someone (or even sneezing).
Wouldn't
an interface for the spinner to a C64 be simpler
then a MAME inteface (USB?) since for the C64 you would just be
hooking up the POT X/Y?
No idea, haven't looked into either. I do rather like the one I have for
the Atari 5200 :^)
5:07 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
From: bpope at wordstock.com (Bryan Pope)
<snip>>
P.S. Speaking of "different" controllers, has
anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
About 15 years ago I wired a number of Happ Control Atari arcade trackballs
to generic PC mice to use in exhibits at the Field Museum of Natural History
in Chicago. These trackballs use a pair of optical sensors on both the X and
Y axes, like the mice did, so I desoldered the sensors from the mouse
circuit board and ran wires to the sensors on the trackballs, bypassing the
rest of the circuit on the trackball. Worked fine. Happ now sells interface
units for PC's.
I kept the "prototype" unit for myself, and used it for 10 years before
having to clean the rollers and lube the bearings for the first time. I
don't use it now because the laptop I have does not have a serial port.
Bob
6:21 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
On Fri, 15 Sep 2006, Robert Feldman wrote:
There's a line of gizmos with names that include the string "ipac" which
are intended for interfacing arcade controls with PCs in various ways.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
From: bpope at
wordstock.com (Bryan Pope)
<snip>>
P.S. Speaking of "different"
controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
About 15 years ago I wired a number of Happ Control Atari arcade trackballs
to generic PC mice to use in exhibits at the Field Museum of Natural History
in Chicago. These trackballs use a pair of optical sensors on both the X and
Y axes, like the mice did, so I desoldered the sensors from the mouse
circuit board and ran wires to the sensors on the trackballs, bypassing the
rest of the circuit on the trackball. Worked fine. Happ now sells interface
units for PC's.
I kept the "prototype" unit for myself, and used it for 10 years before
having to clean the rollers and lube the bearings for the first time. I
don't use it now because the laptop I have does not have a serial port.
9:12 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
And thusly were the wise words spake by David Griffith
On Fri, 15 Sep 2006, Robert Feldman wrote:
There's a line of gizmos with names that include the string "ipac" which
are intended for interfacing arcade controls with PCs in various ways.
But I would like to use the same trackball or spinner directly hooked
up to my Commodore 64... (and then other times to my PC to play
Centipede or Arkanoid)
Cheers,
Bryan
From:
bpope at wordstock.com (Bryan Pope)
<snip>>
P.S. Speaking of "different"
controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
About 15 years ago I wired a number of Happ Control Atari arcade trackballs
to generic PC mice to use in exhibits at the Field Museum of Natural History
in Chicago. These trackballs use a pair of optical sensors on both the X and
Y axes, like the mice did, so I desoldered the sensors from the mouse
circuit board and ran wires to the sensors on the trackballs, bypassing the
rest of the circuit on the trackball. Worked fine. Happ now sells interface
units for PC's.
I kept the "prototype" unit for myself, and used it for 10 years before
having to clean the rollers and lube the bearings for the first time. I
don't use it now because the laptop I have does not have a serial port.
17 Sep
17 Sep
10:28 a.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
From: bpope at wordstock.com (Bryan Pope)
<snip>
But I would like to use the same trackball or spinner
directly hooked
up to my Commodore 64... (and then other times to my PC to play
Centipede or Arkanoid)
Cheers,
Bryan
I don't know the C64, but if it's mouse uses a pair of slotted wheels, each
with two sets of transmitter-receiver photo diodes, you can modify the Happ
trackball. Just run the wires on the trackball side to a DB25 plug, and put
a DB25 socket on the C64 mouse circuit board side. Do the same for a PC
mouse. This way, you can use the circuit board from a PC mouse with a PC and
from a C64 with that.
BTW, I forgot to mention that I desoldered the left and right button
switches from the mouse board and wired-in arcade pushbuttons, also from
Happ Controls.
If you do not use common ground wires, you will need 20 pins on the DB25 for
the full setup (16 wires for the 8 photo diodes and 4 wires for the two
switches).
Bob
15 Sep
15 Sep
10:23 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
From: bpope at
wordstock.com (Bryan Pope)
<snip>>
P.S. Speaking of "different"
controllers, has anybody wired up an
arcade quality spinner or trackball (by themselves) to use with
a C64 or other similar system?
About 15 years ago I wired a number of Happ Control Atari arcade to generic PC mice to use in exhibits at the Field
Museum of Natural
History
in Chicago. These trackballs use a pair of optical
sensors on both the X
and
Y axes, like the mice did, so I desoldered the sensors
from the mouse
circuit board and ran wires to the sensors on the trackballs, bypassing
the
rest of the circuit on the trackball. Worked fine.
Happ now sells
interface
units for PC's.
I kept the "prototype" unit for myself, and used it for 10 years before
having to clean the rollers and lube the bearings for the first time. I
don't use it now because the laptop I have does not have a serial port.
Bob
A little trackball trivia to show you what a chicken-shit company Atari was
while they were under the Warner Bros Corporation umbrella. They ( Atari )
contacted a company in New York ( Orbit Instruments ) who held the patent
and produced military trackballs used in the tactical display consoles on
AEGIS Cruisers and Destroyers. Atari wanted a controller for the arcade
version of Missile Command that some asshole kid couldn't break off or
destroy ( like they could a joystick ). A deal was struck and Orbit "
shared " their proprietary design with the Atari engineers. A long period of
time passed and the Missile Command arcade games started showing up in malls
around the country with a " patented " trackball controller installed. Orbit
called Atari because this was a blatant patent infringement. Atari laughed
and said they had 20 corporate lawyers sitting around with nothing to do
that would just love to tie this up in the courts until Orbit ran out of
money. This is why I think patents are a joke unless you have tons of cash
to protect it. And the lawyers lived happily thereafter ....
Best regards, Steven
11:21 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
Where did you get this "trivia" from?
Curt
A little trackball trivia to show you what a chicken-shit company Atari was
while they were under the Warner Bros Corporation umbrella. They ( Atari )
contacted a company in New York ( Orbit Instruments ) who held the patent
and produced military trackballs used in the tactical display consoles on
AEGIS Cruisers and Destroyers. Atari wanted a controller for the arcade
version of Missile Command that some asshole kid couldn't break off or
destroy ( like they could a joystick ). A deal was struck and Orbit "
shared " their proprietary design with the Atari engineers. A long period of
time passed and the Missile Command arcade games started showing up in malls
around the country with a " patented " trackball controller installed. Orbit
called Atari because this was a blatant patent infringement. Atari laughed
and said they had 20 corporate lawyers sitting around with nothing to do
that would just love to tie this up in the courts until Orbit ran out of
money. This is why I think patents are a joke unless you have tons of cash
to protect it. And the lawyers lived happily thereafter ....
Best regards, Steven
16 Sep
16 Sep
12:51 a.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
Definitely seems questionable, especially since Missile Command (1980)
was NOT the first Atari arcade to use a trackball (spelled trakball in
Atari-speak) as there were several prior arcades in 78-79 using
trackball controllers (such as flyball, Soccer, football, basketball and
I think 1-2 others... its late and I'm a bit fuzzy right now, but I
think there should be a couple of others.)
Curt
William Donzelli wrote:
Where did you
get this "trivia" from?
Sounds pretty fishy - I think the patent on the trackball would have
expired by the time Missile Command came out.
--
Will
12:38 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
Definitely seems questionable, especially since
Missile Command (1980)
was NOT the first Atari arcade to use a trackball (spelled trakball in
Atari-speak) as there were several prior arcades in 78-79 using
trackball controllers (such as flyball, Soccer, football, basketball and
I think 1-2 others... its late and I'm a bit fuzzy right now, but I
think there should be a couple of others.)
Curt
William Donzelli wrote:
>> Where did you get this "trivia" from?
>
> Sounds pretty fishy - I think the patent on the trackball would have
> expired by the time Missile Command came out.
> --
> Will
I didn't say Missile Command was the only game in question. It just happened
to be the name used in the conversation.
This "trivia" came directly from the President of Orbit. They were the
sub-contractors for many of the Man-Machine Interfaces for my tactical
display consoles (including the trackball) from the mid-seventies into the
ninties.
As for patents; " A patent provides protection for up to twenty years,
counting from the filing date (the date given with reference numeral 22 on
the front page). US patents with a filing date before June 8, 1995 provide
protection for up to seventeen years counting from the date of grant (the
date given with reference numeral 45), or 20 years from the filing date,
whichever expires later. "
As to whether you believe it or not, I really don't care. I was working with
the guys at Orbit ( the Military Orbit ) when this happened.
regards, Steven
2:45 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
As for patents; " A patent provides protection
for up to twenty years,
counting from the filing date (the date given with reference numeral 22 on
the front page). US patents with a filing date before June 8, 1995 provide
protection for up to seventeen years counting from the date of grant (the
date given with reference numeral 45), or 20 years from the filing date,
whichever expires later. "
Correct, but trackballs date to the 1950s.
--
Will
8:27 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
> As for patents; " A patent provides
protection for up to twenty years,
> counting from the filing date (the date given with reference numeral 22
on
> the front page). US patents with a filing date
before June 8, 1995
provide
> protection for up to seventeen years counting
from the date of grant
(the
date given
with reference numeral 45), or 20 years from the filing date,
whichever expires later. "
Correct, but trackballs date to the 1950s.
--
Will
17 Sep
17 Sep
7:17 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
Please enlighten me as to what type of trackball was
used in the 1950s ? I
am genuinely interested. Thank you.
Trackballs and joysticks were used in 1950s era radar indicators,
mostly for fire control. I think the first use of the trackball was in
a Canadian aircraft radar set, used to designate targets with a
cursor. The X and Y positions were transmitted to the radar as a set
of synchro signals that were fed to come sort of fire control
computer.
The earliest use that I know of for an X Y positioner for data input,
in this case a joystick, is the AN/MPG-1 artillery radar of 1945.
--
Will
18 Sep
18 Sep
4:21 p.m.
New subject: Arcade Trackballs (was: Re: C64 Fuse?)
> Please enlighten me as to what type of trackball
was used in the 1950s ?
I
am genuinely
interested. Thank you.
Trackballs and joysticks were used in 1950s era radar indicators,
mostly for fire control. I think the first use of the trackball was in
a Canadian aircraft radar set, used to designate targets with a
cursor. The X and Y positions were transmitted to the radar as a set
of synchro signals that were fed to come sort of fire control
computer.
The earliest use that I know of for an X Y positioner for data input,
in this case a joystick, is the AN/MPG-1 artillery radar of 1945.
--
Will
16 Sep
16 Sep
12:23 a.m.
On Friday 15 September 2006 11:53 am, Zane H. Healy wrote:
The 250V 1.5A Fast Blow fuse did the trick, and the computer appears
to be working again. Didn't really have time to play with it last
night, other than to get it working and play a game of Missile
Command.
I do not like the new fuse packaging. I like the old fashioned little
boxes.
Those little slide-open boxes? That's why I never throw any of them away,
though some of the ones I have are labeled with slightly different values
than what came in them orignally. :-)
--
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
At 8:21 PM -0400 9/14/06, Roy J. Tellason wrote:
Ah.
On Thursday 14 September 2006 06:13 pm, Zane H.
Healy wrote:
Good brand. 318?
No clue, it's runs and has 8 cylinders. :^) I have a shade-tree
mechanic that worries about the details. :^) Older
than my '78 Dodge? :-) Those are likely to be 32V automotive
fuses, and not the 250V variety, though I doubt that'll make much
difference.
Yes, it's a '72 Dodge. Since it's for a 9V power line, like you say 32V
vs. 250V probably
won't matter much.
Nope.
But I think I'll try Rat Shack first. If
I'd been thinking I probably
could have raided my PDP-11 for a fuse last night.
The auto parts store probably won't have much in the smaller sizes anyhow. 
14 Sep
14 Sep
6:10 p.m.
How many Amps should the fuse in the C64 be rated for? The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
I don't think using the larger fuse will cause any real problems in that
any fault that passes enough current to blow a 1A fuse is likely to be a
dead short across the 5V lien, and that'll blow the 1.5A fuse too.
-tony
7:43 p.m.
How many Amps
should the fuse in the C64 be rated for? The fuse I
pulled is a 1.5A 250V fuse, yet "Troubleshooting & Repairing your
Commodore 64" says to use a 1A 250V fuse. A quick bit of googling
seems to indicate that it should be 1.5A.
I don't think using the larger fuse will cause any real problems in that
any fault that passes enough current to blow a 1A fuse is likely to be a
dead short across the 5V lien, and that'll blow the 1.5A fuse too.
-tony
6518
days inactive
6522
days old
32 comments
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