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'E Clock'
1999\11\02@014759 by

how long does it take for One instruction like "NOP" to execute useing a 4mhz cr
ystal on a 16c84?

Send someone a cool Dynamitemail flashcard greeting!! And get rewarded.

1 microsecond
There is a section in the data sheet that will explain it to you.

Also note, some instructions like CALL and GOTO take two cycles.

Quentin

Mike M wrote:

> how long does it take for One instruction like "NOP" to execute useing a 4mhz
crystal on a 16c84?
>
> Send someone a cool Dynamitemail flashcard greeting!! And get rewarded.

Is this a trick question?

1 microsecond.

--
Thomas C. Sefranek  WA1RHP
ARRL Instructor, Technical Specialist, VE Contact.
http://www.harvardrepeater.org

> Van: Quentin <qscICON.CO.ZA>
> Aan: PICLISTMITVMA.MIT.EDU
> Onderwerp: Re: E Clock
> Datum: dinsdag 2 november 1999 7:59
>
> 1 microsecond
> There is a section in the data sheet that will explain it to you.
>
> Also note, some instructions like CALL and GOTO take two cycles.
> Best read the data sheet.

All commands that do *not* move to the next-address-in-sequence are costing
2 cycles.  These are Goto, Call, Return, Skip & Iret (for a Mid-range
device).

Regards,
Rudy Wieser

GOT YOU, WRONG!
One NOP instruction execution time in a 4mhz crystal 16C84 can have
several answers, but the most correct one is: *undetermined*, mostly
because "mhz" is not a valid frequency definition.  Suppose Mike (note
the use of upper case - capital letter at his name) tried to say 4mHz,
so it would represent four milliHertz, then the NOP instruction would
take as much as 1000 seconds, or 16 minutes and 40 seconds.  But suppose
Mike tried to say 4MHz, then it will be 1 microsecond.  By the other
side, if mike tried to tricky all of you saying really "4mhz", the
answer is: *undetermined* because 4mhz is not a valid frequency, so,
there is not a possible valid answer.

Wagner.

"Thomas C. Sefranek" wrote:
>
> Mike M wrote:
>
> > how long does it take for One instruction like "NOP" to execute useing a 4mh
z crystal on a 16c84?
{Quote hidden}

Get real.  I believe he meant 4 megahertz as did probably most
everyone else.

Regards,

Jim

On Tue, 02 November 1999, Wagner Lipnharski wrote:

{Quote hidden}

mhz crystal on a 16c84?
{Quote hidden}

jimjpes.com

Trust Wagner to find a snake in the grass.
;-)

Quentin
"All we sense is vibration, nothing is material."

Folks, the solution to people who post
stuff like this is to put them on ignore,
not to clutter the list with responses.

Hi Wagner,

> ...so it would represent four milliHertz, then the
> NOP instruction would take as much as 1000 seconds,
> or 16 minutes and 40 seconds...

Oooh, where can I obtain these 4 millihertz crystals?
I can't find them in my Digi-Key catalog. ;-)

Later,

Eric

=====

__________________________________________________
Do You Yahoo!?

Quite sure not Eric. Except if they do some mistakes as this one from
Jameco new catalog, last inner cover page bottom, (the same at the web),
0.83mA !!! just a little mistake about to use the milli prefix ("m") or
not...
www.jameco.com/cfm/viewdesc.cfm?part_num=168372
can make a whole advertisement goes down the drain, or not, they got
free adv here because that :)

few days ago and his name was popping out my old fart memory when
typing.

Wagner

Eric Schlaepfer wrote:
{Quote hidden}

>Trust Wagner to find a snake in the grass.
>;-)
>
>Quentin
>"All we sense is vibration, nothing is material."

I'm surprised at the amount of shoddy engineering uncovered by Wagner's

Anybody ever met eg 100mF capacitors on a circuit diagram.
What do you think they are?
Someone being shoddy with their units and using "m" for micro perhaps?
Put in a 100 micro-Farad capacitor in such a circuit and see how well it
works.
Quiz (no sample or even final answers available)(or guarantee of having got
it right in long form either) :-)

Correctly write in abbreviated form -
(all questions are worth O marks.)

100 meg Ohm
100 milli Ohm

Even units names and proper (Proper?) names move on it seems.
We used to have 300 degrees K being about room temperature. Now its 300 k =
300 kelvins. Yes, plural, and the "degrees" and the capital letter has gone
so I guess therefore that this is no longer named after Lord K - just
happens to be a unit with the same name as him :-)

If we do not try to allow to let life be this complicated we will get more
done but it will more occasionally de done wrong.
Vibration? - Actually, everything is light or made thereof - I guess its
immaterial whether you consider this as electromagnetic vibration or as
particles :-)

Bonus questions - each worth O marks:

- How long does it take a "piece" of light to get from anywhere to anywhere
in the universe from its perspective?
- How big is the universe for all light?

regards

Russell McMahon

(D0 y0u think that was a mistake?)

At 04:56 PM 11/3/99 +1300, you wrote:
>Correctly write in abbreviated form -
>(all questions are worth O marks.)
>
>100 meg Ohm  - 100 M Ohm
>100 milli Ohm - 100 m Ohm
>100 milli Farad (aaah!). - 100 mF
>100 micro Farad. - 100 uF   (not wanting to actually make the micro
character ;-)

>Bonus questions - each worth O marks:

Ahh, some good physics questions, hope I get them right:

>
>- How long does it take a "piece" of light to get from anywhere to anywhere
>in the universe from its perspective?

It gets there instantaneously,from its perspective. The rest of the
universe appears at a stand-still.

>- How big is the universe for all light?

Infinitely small. Length contraction is infinite.

{Quote hidden}

| Sean Breheny
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
shb7cornell.edu ICQ #: 3329174

At 23:08 2/11/99 -0500, you wrote:
>At 04:56 PM 11/3/99 +1300, you wrote:
>>Correctly write in abbreviated form -
>>(all questions are worth O marks.)
>>
>>100 meg Ohm  - 100 M Ohm
>>100 milli Ohm - 100 m Ohm
>>100 milli Farad (aaah!). - 100 mF

-> hence why MFD was baned!

>>100 micro Farad. - 100 uF   (not wanting to actually make the micro
>character ;-)
>

Oh dear,
I thought it was....

100 of thoese
100 thingymabobs
100 dowahts its
100 whatcha macall its

>>Bonus questions - each worth O marks:
>
>Ahh, some good physics questions, hope I get them right:
>
>>
>>- How long does it take a "piece" of light to get from anywhere to anywhere
>>in the universe from its perspective?

Light can not be defined as a "piece" (Wagners getting to me!)

>
>It gets there instantaneously,from its perspective. The rest of the
>universe appears at a stand-still.

Oh took me a while to get waht you ment here, yep I agree, nothing travels
faster than light, except my paycheque when the better half gets to it <G>

>
>>- How big is the universe for all light?
>
>Infinitely small. Length contraction is infinite.
>

I thought that it was infinately small as light fills the enitre void? Opps
seem to have that wrong (Again ahrr)

{Quote hidden}

Nope

Dennis

At 03:52 PM 11/3/99 +1100, you wrote:
> -> hence why MFD was baned!

Yeah, it is good that it was dropped. I still have some caps that have MFD
written on them,though.

>Oh dear,
>I thought it was....
>
>100 of thoese
>100 thingymabobs
>100 dowahts its
>100 whatcha macall its

:-)

>Light can not be defined as a "piece" (Wagners getting to me!)

Well, in a way you are right,but I think that Russell was trying to find a
colloquial (sp?) way of saying "wave packet" or "group". In that sense, you
can define a region over which light intensity is greater than in the
surrounding region (such as what happens if you turn a flashlight (torch
<G>) on for 1 second and then off again - you will have created a 300
million meter long wave packet).

>
>Oh took me a while to get waht you ment here, yep I agree, nothing travels
>faster than light, except my paycheque when the better half gets to it <G>

<G>

>I thought that it was infinately small as light fills the enitre void? Opps
>seem to have that wrong (Again ahrr)

I'm not sure how that makes it infinitely small? You mean the light is

|
| Sean Breheny
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
shb7cornell.edu ICQ #: 3329174

>>100 meg Ohm  - 100 M Ohm
1E8 Ohm
>>100 milli Ohm - 100 m Ohm
0.1 O or 0O1 (middle O is an Ohm symbol)
>>100 milli Farad (aaah!). - 100 mF
100,000 uF,  0.1F,  Or maybe 0F1.  All the caps of this size that
I've actually SEEN have been labeled as one of the first two.

Maybe I'm getting old, but I can remember when caps were pretty exclusively
named on 6ish exponents.  MicroFarads (useful in powersupplies) and
seemed to show up when the range became relvannt to digital electronics (all
those bypass caps.)  I've not yet EVER seen milliFarads.

:-)
BillW

At 00:39 3/11/99 -0500, you wrote:
{Quote hidden}

Yes,
meaning that light is infinitely large as it covers all, an travels in all
directions

Dennis

{Quote hidden}

It seems to me that PicoFarads is fairly new ... used to be just
- Nick -

William Chops Westfield wrote:
> Maybe I'm getting old, but I can remember when caps were pretty exclusively
> named on 6ish exponents.  MicroFarads (useful in powersupplies) and
> seemed to show up when the range became relvannt to digital electronics (all
> those bypass caps.)  I've not yet EVER seen milliFarads.
>
>  :-)
> BillW

Dennis Plunkett wrote:
> Yes,
> meaning that light is infinitely large as it covers all, an travels in all
> directions
>
> Dennis

Is there light inside cold planets and meteors?  If light can not travel
(or move) inside dense and dark objects (like my head), than all the
theories about light to be the "universal fluid", or "cosmos soup" (I
not said SOAP, ok?) is wrong, is not?
Wagner.

On Tue, 2 Nov 1999 23:26:26 -0800 Nick Taylor <ntaylorINAME.COM> writes:
>It seems to me that PicoFarads is fairly new ... used to be just
> - Nick -
>

I also remember using "micky mikes" before pF.  I started using
nF about the same time I started using ns (nanoseconds).  I HAVE used mF
(millifarad, not to be confused with the old mFd or microfarad) on some
schematics.  I've defined parts with capacitance in mF so the part name
is shorter (not so many zeroes).

Harold

Harold Hallikainen
haroldhallikainen.com
Hallikainen & Friends, Inc.
See the FCC Rules at http://hallikainen.com/FccRules and comments filed
in LPFM proceeding at http://hallikainen.com/lpfm

___________________________________________________________________
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On Wed, 3 Nov 1999 10:27:34 +0200 Quentin <qscICON.CO.ZA> writes:
>Russell McMahon wrote:
>
>> Anybody ever met eg 100mF capacitors on a circuit diagram.
>> What do you think they are?
>YES! That was irritating. Had to measure it on a tester to be sure. I
>think the problem here is the symbol for micro that is not part of the
>usual Alphabet.
>

Once we moved away from mfd for microfarad, hasn't it been
general practice to use uF for microfarad, making mF available for
millifarad without too much confusion.  By the way, how DID they measure?
Milli or Micro?

Harold

Harold Hallikainen
haroldhallikainen.com
Hallikainen & Friends, Inc.
See the FCC Rules at http://hallikainen.com/FccRules and comments filed
in LPFM proceeding at http://hallikainen.com/lpfm

___________________________________________________________________
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Free software, free e-mail, and free Internet access for a month!
Try Juno Web: dl.http://www.juno.com/dynoget/tagj.

Hi Wagner,

> Quite sure not Eric. Except if they do some mistakes
> as this one from
> Jameco new catalog, last inner cover page bottom,
> (the same at the web),
> that supplies 9VAC at
> 0.83mA !!! just a little mistake about to use the
> milli prefix ("m") or
> not...

Jameco has similar mistakes scattered throughout their
catalog. Oh well...

> By the way, my mistake about Voltaire x Volta, I was
> few days ago and his name was popping out my old
> fart memory when
> typing.

Well, it happens. Who here can remember the first
names of Hertz, Henry, and the others?

Later,

Eric

=====

__________________________________________________
Do You Yahoo!?

At 09:02 3/11/99 -0500, you wrote:
>Dennis Plunkett wrote:
>> Yes,
>> meaning that light is infinitely large as it covers all, an travels in all
>> directions
>>
>> Dennis
>
>Is there light inside cold planets and meteors?  If light can not travel
>(or move) inside dense and dark objects (like my head), than all the
>theories about light to be the "universal fluid", or "cosmos soup" (I
>not said SOAP, ok?) is wrong, is not?
>Wagner.
>
>
I would have to open it up to see if light comes out:)

Dennis

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