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'PIC'
1994\06\21@151550 by Don Lekei

picon face
Martin,

>The above statements by you caught my attention as I have done
> both of these things in my one and only (so far) PIC project.

> Could you please elaborate on why the code shouldn't start at 0
> and why EQU shouldn't be used to define data addresses?

Thanks, I was hopping those comments would start a thread on programming
styles.

>>...  It is right up there with starting
>>your code at  location zero in any PIC (other than an '84)!

On 5X PICs, the locations <100H (in each bank) are precious for callable
finctions and computed goto's. There is no reasion to start your code
there, as
the GOTO at the ind of code space can point anywhere (I usually use 100H).

Secondly, the first 40H locations are subject to attack in 5X's and 71's,
so if
you have your start-up code there, it makes it subject to interception by
revengers.  For this reason, all unused locations in 00-3FH should be also
be
filled with zero, to prevent down-programming.

>>PS. Another handy way to start a lively thread is to mention using EQU
>>to  define data addresses.

Using EQU's to define data memory locations an I/O ports is a style of
which I am
not fond.

If you use the porgram counter and .DS (aka. RES) to define all storage, it
makes
memory and IO usage clearer and more portable (adding or deleting routines
which
require stored data is automatic).

Here are a couple of excerpts from REGS.ASM in DEMO.ZIP which is available
on
my BBS, Microchip's BBS and a few ftp sites:

       .seg    REGS            ;org for register declarations

ind     .ds     1               ;Pseudo-reg 0 for INDIRECT (FSR)
RTCC    .ds     1               ;Real time counter
PCL     .ds     1               ;PC
STATUS  .ds     1               ;STATUS REG
FSR     .ds     1               ;File select reg 0-4=indirect add.dss

;************************************************************************
;* PORT A Definitions
;************************************************************************

B.PROBE         = 0,*           ;Probe input / AN0 (MUST BE BIT 0)
B.BP2           = 1,*           ;LCD backplane bit (3 level)
B.BP1           = 2,*           ;LCD backplane bit (3 level)
B.BP3           = 3,*           ;LCD backplane bit (3 level)
B.SCALE         = 4,*           ;Scale / Bias for Probe, RTCC IN, schmitt

PORTA           .ds 1           ;Port A I/O register (4 bits)

TAINIT =       ^B.PROBE|^B.BP1|^B.BP2|^B.BP3  ;initial TRISA value 1=in
PAINIT  =      ^B.SCALE                   ;port A init

-----------------------------------------------------------------------
| Note how the above coding forces you to consider initialization values.
| It also makes the bit label definitiions more portable as they can be
| easilly moved from port to port (eg. B.PROBE is currently defined as
| BIT 0 of PORTA.
|
| Then, later in the code...
-----------------------------------------------------------------------
         .seg  REGS
;**********************************************************************
;* Start of program-specific registers. More are defined in the modules
;* in which they are required.
;**********************************************************************

REGBASE:                ;first reg cleared by RESET code.

TEMP:           .ds 1   ;General temporary reg. for LOCAL USE ONLY.
TEMP2:          .ds 1   ;General temporary reg. for LOCAL USE ONLY.
VALUE:          .ds 4   ;Working value from display (long)

MISCFLAGS:              ;miscelaneous flags
B.RA5ON         = 0,*   ;Flag - RA5 (attenuator) is ON (set to 0)
B.NEWLOGIC      = 1,*   ;Flag - new logic cycle
B.ZEROENAB      = 2,*   ;Flag enable zeros for display (0=trim leading 0's)
B.PULSE         = 3,*   ;Probe detected a pulse
B.PULSE2        = 4,*   ;Time delayed PULSE detect
B.SLOPE         = 5,*   ;Flag - negative slope on waveform
B.NUMPROC       = 6,*   ;FLAG - enterring a number (LCD and VALUE are
valid)
B.ONETRIG       = 7,*   ;Flag - Single trigger only
               .ds 1   ;

-----------------------------------------------------------------------
Even if you change processors, REGBASE, and all of the flags in
MISCFLAGS are automatically moved.

Yes, there are ways to use EQU for this, but they invite errors, like
not reserving enough space for VALUE if the code is re-used in another
project.

Don.

1994\06\22@021935 by Don Lekei

picon face
Martin Vuille commented:

> However, I still feel that the EQU approach is preferable to define the
> special-function registers. The location of these is immutable, so it is
> better (in my mind) to assign them a fixed value.

(actually they are not... Note that they have been known to change from
PIC to PIC (especially when moving from 16cXX to 17CXX parts!)

> If you use .DS/RES and
> make a mistake (i.e. forget a line) then the error will propagate to all
> the other SFRs.

Actually, I (personal "religion" here) prefer the fact that using DS forces
me to check that I have dealt with all registers. The segment management
macros profided with ASPIC take care of boundary checking automatically.

And in the same therad, Chuck McManis (and others) asked:

>>    Secondly, the first 40H locations are subject to attack in 5X's and
>>    71's, so if you have your start-up code there, it makes it subject
>>    to interception by revengers.

> What does this mean? What is a "revenger?"

A revenger is a person who reverse engineers products or systems. The fact
that
the first 40H words of program memory are re-programmable even while code
protected on some of the PIC parts is fertile ground for revengers. The
security concious programmer must therefore be aware of this and take the
appropriate precautions.

The problem is that no one will openly talk (see how we dance arround it)
about these things (even though it's right there in white-on-white in the
spec sheet). The security precautions are simple and effective.

-Don


'PIC'
1995\01\25@222843 by Andre Dault
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face
       1st of all someone was asking who was on this listserv and where
they came from.... Well I'm new to this list, I live in Ontario, Canada.
I'm curently a student in the University of Ottawa in Mechanical
Engineering.  I'm in my 3rd year.  The reason that I joined this listserv
is that I have a big interest in Robotics.  The only problem with this is
that it is costly.  (any suggestions???)

       2nd.  I'm got a slight ideal what a PIC is but can someone
clarify it for me.... like it's applications, how hard they are to use in
a robotic application.... and whatever you thinks would be usefull
information.  It would be appreciated.

       Thanks

               Andre Dault
               spam_OUTs635355TakeThisOuTspamaix2.uottawa.ca

1995\01\26@051505 by Errington A

flavicon
face
Hi

Since we are all introducing ourselves I would like to say hello.  I
subscribed to the list last week, and although it went a bit quiet I am
interested in what is going back and forth now.

My name is Andrew Errington and I work as a PC consultant at Lancaster
University (UK).  My interest in PICs came about after building a project
with a BASIC Stamp last year and deciding I could do more if I controlled
the processor directly.  I bought Microchip's Embedded Control Handbook,
which is _full_ of cool ideas, and I built the 16C84 development programmer
detailed in there.  I modified David Tait's controller software so I now
have a development environment that cost me about ?20 (or $30).

The PIC84 is excellent for development as it's EEPROM memory allows you to
recode and reprogram with no effort.  I have a project underway (in my spare
time (ha ha!)), and I will probably be looking at other PIC's for other
projects later.

Andrew M. Errington
PC Consultant
Lancaster University
.....a.erringtonKILLspamspam@spam@lancaster.ac.uk
Tel: +44 1524 592678
Fax: +44 1524 844011

1995\01\26@080908 by David Baker
flavicon
face
Seeing we are introducing ourselves, I am an Aussie living & working in
Malaysia (interested to see someone here from Singapore - very close).

I am an electronics engineer, but haven't realy started playing with PIC's
yet. I bought a couple of 16C55 chips with the idea of reverse engineering
& improving on a phone monitor circuit that I bought. Then I found out
about the code protect fuse, so that blew that idea.

I am now waiting for some Stamp II units to be released so I can build a
unit to monitor the signal strength of our radio transmitter (just tap onto
the LED lines of our digital signal strength meter) so I can convert to
RS-232 & log the data on a PC.

While I'm here - are the development tools (software & cable) the same for
the Stamp II & Stamp I? If so, I might as well order the development tools
& a couple of Stamp I units & do some initial testing.

Dave

--
-------------------------------------------------------------------------
|       David Baker        |  Internet   ID (home) - davidspamKILLspambaker.pc.my  |
|   Electronics Engineer   |  Internet   ID (work) - .....davidKILLspamspam.....gmetra.po.my |
|                          |  Fax                  - 60-3-2612870       |
|  Kuala Lumpur, Malaysia  |  Compuserve ID        - 70461,2360         |
-------------------------------------------------------------------------

1995\01\26@083232 by Lou Sortman

flavicon
face
Well, ok, since we're all introducing ourselves:

My name is Lou Sortman and I am currently working in Chapel Hill, North Carolina
USA administering a Solaris system and the gopher, http, ftp, etc. servers on
it.

I haven't actually used a PIC yet, but I am somewhat familiar with its
architecture.  I have, however, designed and built an unusual clock around an
8051 which is probably overkill.  The next version will probably run on a PIC
unless I just absolutely need to be able to query/set the time via RS232.  8-)

Gotta get the time <no pun> though.

I might actually have to go and built David Tait's programmer, though I despise
hanging things off of my printer port.  Maybe Access.bus (or something better)
will be in common use before I am dead.

1995\01\26@085142 by Coats Jack

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face
----- Begin Included Message -----

[snip]

 The reason that I joined this listserv
is that I have a big interest in Robotics.  The only problem with this is
that it is costly.  (any suggestions???)

       2nd.  I'm got a slight ideal what a PIC is but can someone
clarify it for me.... like it's applications, how hard they are to use in
a robotic application.... and whatever you thinks would be usefull
information.  It would be appreciated.

       Thanks

               Andre Dault
               EraseMEs635355spam_OUTspamTakeThisOuTaix2.uottawa.ca


----- End Included Message -----


Andre,

I might suggest looking into some papers on subsumption
arechitecture, and implementing a "small" robot using it.  The
reason I suggest subsumption is that you could implement self
sufficient components, get the feeling of accomplishment of
having each one work independantly, and then after having several
working, you can have them work in unison to solve a 'bigger'
problem.

I see a PIC as being good for this, because of their small size,
weight, external components required, and $ (especially for the
small ones), you can afford to put a little computing power a lot
of places, which should help in making your robot modular.

I hope that helps ... JC

1995\01\26@100609 by RICHARD GARATH HINCE

flavicon
face
Coats Jack <jocoatsspamspam_OUTAMOCO.COM> writes:
{Quote hidden}

I agree. Although I'm not involved in robotics directly, my colleagues in the
AI group are, and this approach has been suggested. It would almost certainly
be the only sensible way to do it using PICs anyway, since they don't really
have enough program space for large applications.

Using the 16C84's would allow the devices to be programmed whilst still in situ
on the robot. I've been trying in-circuit programming using these devices and
it works well; we're considering the construction of a mobile robot using some
simple geared motors / sensors and a number of PICs programmable via external
jack lines. This is only one of a number of projects which may be constructed,
however! If it happens, I'll post some news.

Because of this interest, we'd be pleased if anyone who has already done any
work on a mobile robot in this way would get in touch and let us know how it
worked / is working...

Richard


'PIC'
1997\07\21@170212 by Cary Smith
flavicon
face
Could somebody remind me as to the definition of PIC?

CAry

1997\07\21@171420 by Mike

flavicon
face
At 05:02 PM 7/21/97 -0400, you wrote:
>Could somebody remind me as to the definition of PIC?

Peripheral Interface Controller

Presently Induced Confusion

Positively Ignominious Confabulation

Purile Invective Colloquialism

Past any Interest or Care

Any additions ?

Rgds

Mike
Perth, Western Australia

Where I should be asleep at 5:31am - uuurgh !


Some say there is no magic but, all things begin with thought then it becomes
academic, then some poor slob works out a practical way to implement all that
theory, this is called Engineering - for most people another form of magic.
                                                                      Massen

1997\07\21@172308 by Luciano Cadaval Basso

flavicon
face
Cary Smith wrote:
>
> Could somebody remind me as to the definition of PIC?
>
> CAry



       P eripheral   I nterface   C ontroller

1997\07\21@172313 by WF AUTOMA‚̀O

flavicon
face
Mike wrote:
{Quote hidden}

he he he he!

Miguel.

1997\07\21@175812 by Shirazi Latif

picon face
-----Original Message-----
From: Cary Smith <KILLspamcasmithKILLspamspamLYNX.DAC.NEU.EDU>
To: RemoveMEPICLISTTakeThisOuTspamMITVMA.MIT.EDU <spamBeGonePICLISTspamBeGonespamMITVMA.MIT.EDU>
Date: 21 July 1997 11:05
Subject: PIC



Could somebody remind me as to the definition of PIC?

CAry

PHRIPHERIAL INTERFACE CONTROLER

1997\07\21@191026 by Mike

flavicon
face
At 11:55 PM 7/21/97 +0200, you wrote:

>Could somebody remind me as to the definition of PIC?
>
>CAry
>
>PHRIPHERIAL INTERFACE CONTROLER

Oh dear - I can only laugh cause I'm still awake at 7:27am - uuuurgrgrgh !

Potentially Inviolate Constipation

Rgds

mike
erth, Western Australia



Some say there is no magic but, all things begin with thought then it becomes
academic, then some poor slob works out a practical way to implement all that
theory, this is called Engineering - for most people another form of magic.
                                                                      Massen

1997\07\23@111942 by Tim Crist

flavicon
face
    >Could somebody remind me as to the definition of PIC?

    Mike,

    FYI, I was told:

    Programmable Integrated Circuit

    also:

    Parts In Chandler

    I like the latter.

    Regards,

    Tim

1997\07\23@112507 by WF AUTOMA‚̀O

flavicon
face
Tim Crist wrote:
>
>      >Could somebody remind me as to the definition of PIC?
>
>      Mike,
>
>      FYI, I was told:
>
>      Programmable Integrated Circuit
>
>      also:
>
>      Parts In Chandler
>
>      I like the latter.
>
>      Regards,
>
>      Tim

Puts In Curt!  (curt circuit)

Miguel.

1997\07\24@155359 by WF AUTOMA‚̀O

flavicon
face
P™™™™™™™™™™™™™™™™ Intacto  Colega!
>
       Miguel.


'pic'
1998\01\11@131057 by Robert D. Rupert
flavicon
face
I'm just starting , I would like to know what will I need to program the
pic12c508 chips.  I have never done this before.  I have no hardware or
software can anyone please help me.

1998\01\12@072948 by anick

flavicon
face
Take a look at the Microchip website for details on what you might need.
And take a look at the PicList Web Archive at
http://www.iversoft.com/piclist/

There are links to other resources and to Microchip too.


Robert D. Rupert wrote:
>
> I'm just starting , I would like to know what will I need to program the
> pic12c508 chips.  I have never done this before.  I have no hardware or
> software can anyone please help me.

1998\01\12@074621 by wkysag

picon face
On 11 Jan 98 at 18:58, Robert D. Rupert wrote:

> I'm just starting , I would like to know what will I need to program
> the pic12c508 chips.  I have never done this before.  I have no
> hardware or software can anyone please help me.

Have a look at my PIC links page at
http://people.frankfurt.netsurf.de/Wolfgang.Kynast/pic.htm

Wolfgang
--

1998\01\12@165223 by XYGAX

picon face
In a message dated 11/01/98  18:14:07, you write:

<< I'm just starting , I would like to know what will I need to program the
pic12c508 chips.  I have never done this before.  I have no hardware or
software can anyone please help me. >>

If you have no HARDWARE can a I sugest a computer or shares in rubber is a
good place to start !

But seriously a Picstart + and MPlab may not be the cheepest soulition but its
worth every pound / dollar / various other stange currency.

Cheers Steve.......


'pic'
1998\06\03@130519 by er.gb
flavicon
face
Please,

SET PIC DIGEST

bye bye
thanks

ezio

TakeThisOuTer.gbEraseMEspamspam_OUTpn.itnet.it

1998\06\03@130519 by er.gb

flavicon
face
Please,

SET PIC DIGEST

bye bye
thanks

ezio

RemoveMEer.gbspamTakeThisOuTpn.itnet.it

1998\06\05@125835 by tmreyco

flavicon
face
Please,

SET PIC DIGEST

bye bye
thanks
Manuel


'PIC'
1998\10\20@231618 by Skooli
picon face
Just looking for programs for the pic when I saw this posting.  Ive had the
same problem and it seems that the only thing to do in this situation is to
use a powered crystal osc. at 20MHz.  They are completely isolated from
outside capacitances so they only output the set frequency of their operation.

1998\10\24@154805 by Dave VanHorn

flavicon
face
>Just looking for programs for the pic when I saw this posting.  Ive
had the
>same problem and it seems that the only thing to do in this situation
is to
>use a powered crystal osc. at 20MHz.  They are completely isolated
from
>outside capacitances so they only output the set frequency of their
operation.

Well, one could use a paralell resonant crystal with proper loading
capacitors, if one wanted to save a lot of money...

1998\10\25@120507 by Peter L. Peres

picon face
On Wed, 21 Oct 1998, Dave VanHorn wrote:

> >Just looking for programs for the pic when I saw this posting.  Ive
> had the
> >same problem and it seems that the only thing to do in this situation
> is to
> >use a powered crystal osc. at 20MHz.  They are completely isolated
> from
> >outside capacitances so they only output the set frequency of their
> operation.
>
> Well, one could use a paralell resonant crystal with proper loading
> capacitors, if one wanted to save a lot of money...

And a lot of power. I've yet never managed to see a canned oscillator that
draws less than 20 mA at > 1 Mhz. That's about five times the PIC power
drain in a 'normal' application.

Peter


'PIC'
1998\11\27@151102 by Walter Banks
picon face
It is a recurring question on this list. I have Microchip PIC documentation

running back to 1982 (General Instruments) The 1982 data book assumed
that the meaning of the PIC acronym was so well known that it used PIC
everywhere but did not define what it meant.

----------
> From: Tim Crist <tjcristEraseMEspam.....CCGATE.HAC.COM>
>      >Could somebody remind me as to the definition of PIC?


Walter Banks

1998\11\27@193523 by Harold M Hallikainen

picon face
On Fri, 27 Nov 1998 09:25:25 -0500 Walter Banks <EraseMEwalterspamBYTECRAFT.COM>
writes:
>It is a recurring question on this list. I have Microchip PIC
>documentation
>
>running back to 1982 (General Instruments) The 1982 data book assumed
>that the meaning of the PIC acronym was so well known that it used
>PIC
>everywhere but did not define what it meant.
>

I seem to recall from 1977 that the P in PIC stood for pachyderm.  The
Cal Poly Rose Float entry that year had an animated elephant, and a PIC
controlled it.  The Mustang Daily (the school newspaper) called it a
"Pachyderm [...] Controller" (I can't recall what the I stood for!

See the PIC in action at...

http://cprf.asi.calpoly.edu/history/1977.html


Harold

___________________________________________________________________
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Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
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1998\11\27@211021 by Dwayne Reid

flavicon
face
>It is a recurring question on this list. I have Microchip PIC documentation
>
>running back to 1982 (General Instruments) The 1982 data book assumed
>that the meaning of the PIC acronym was so well known that it used PIC
>everywhere but did not define what it meant.

I have an OLD book somewhere that I'm positive said 'Peripheral Interface
Controller'.  I can't lay my hands on it at this instant and I'm a bit fuzzy
right now so I could easily be wrong.

dwayne


Dwayne Reid   <RemoveMEdwaynerEraseMEspamEraseMEplanet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(403) 489-3199 voice     (403) 487-6397 fax

1998\11\27@214153 by Eduardo R.

flavicon
face
>>PIC
>>everywhere but did not define what it meant.

BTW...... :

P I C
      Peripheral  Interface  Controller
      -           -          -

"The PIC16/17 was originally designed as a Peripheral Interface Controller (PIC)
for a 16-bit microprocessor. It was essentially an I/O controller designed
to be very fast. It had a small microcoded instruction set. This design
became the basis  for Microchip Technology's PIC16C5X family of
microcontrollers."

 By DAVID BENSON

Eddy

1998\11\30@033548 by Dr. Imre Bartfai

flavicon
face
Hi,
I agree. I took part on a Microchip seminar, and us was told the same, i.
e. PIC = Peripherial Interface Controller. It least it was the origin.
Imre


On Fri, 27 Nov 1998, Dwayne Reid wrote:

{Quote hidden}


'PIC'
2002\07\18@194515 by Royce Simmons
picon face
Hi,

How do I unsubscribe form this list?

Thanks,  Royce

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\07\18@194715 by Epox

picon face
lol
----- Original Message -----
From: "Royce Simmons" <RemoveMEw2rbnTakeThisOuTspamspamPRODIGY.NET>
To: <EraseMEPICLISTspamspamspamBeGoneMITVMA.MIT.EDU>
Sent: Thursday, July 18, 2002 7:44 PM
Subject: Re: PIC


{Quote hidden}

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\07\18@200831 by Brendan Moran

flavicon
face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

To unsubscribulate from the PICList, watch for the random tag that
tells you how, or go to the PICList FAQ at http://www.piclist.com.

Just for irony, I bet that the PICList server will append the tag on
my post.  Enjoy ;)

- --BJM

> Hi,
>
> How do I unsubscribe form this list?
>
> Thanks,  Royce

-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>

iQA/AwUBPTdX+AVk8xtQuK+BEQJDygCg2mZ8wzC6aWyTe5veFSGBpJKepAYAoNwi
URUhf4CP51MVyhhGdkO4Iqh9
=1/at
-----END PGP SIGNATURE-----

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\07\18@211238 by Josh Koffman

flavicon
face
For those who may have similar questions, a friendly reminder that all
sorts of useful list info is available at
www.piclist.com/techref/piclist/listfaq.htm
I quote:
"For instance, to get off the list, you send the command : SIGNOFF
PICLIST to RemoveMELISTSERVKILLspamspamMITVMA.MIT.EDU or send any email to
piclist-unsubscribe-requestSTOPspamspamspam_OUTmitvma.mit.edu or
spamBeGonepiclist-signoff-requestSTOPspamspamEraseMEmitvma.mit.edu.
( KILLspampiclist-unsubscribe-requestspamBeGonespammitvma.mit.edu ) Sending SIGNOFF
PICLIST in the body of a post to the PICLIST@... address will result in
about 1700 people being notified that you want to leave the PICList and
the emails will keep right on coming. "

Josh Koffman
Admin 5
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

Royce Simmons wrote:
> How do I unsubscribe form this list?

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\07\18@231250 by cdb

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face
Unfortunately it is impossible to unsubscribe from the list.
Once subscribed that is it for life- or the closure of the list
whichever is sooner.

HOWEVER it is possible to unsubscribulate, and perhaps this is what
you intended.

To do this one must first email some of the more cantakerous :))
members at least 15 times asking some annoying questions and then in
absolute fury you'll find yourself directed to the PICLIST web page
where unsubscribulation is explained in detail.

If you're really lucky these direction will also appear at the bottom
of the messages.

Your final option would be to purchase a PicList T-Shirt or Mug these
also have the unsubscriptulating directions on them.

Regards

bodgy o:))
--
cdb, EraseMEbodgy1spamEraseMEoptusnet.com.au on 19/07/2002

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http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\07\19@005831 by Epox

picon face
yeah and the mug costs $15
----- Original Message -----
From: "cdb" <@spam@bodgy1@spam@spamspam_OUTOPTUSNET.COM.AU>
To: <spamBeGonePICLISTspamKILLspamMITVMA.MIT.EDU>
Sent: Friday, July 19, 2002 9:11 AM
Subject: Re: PIC


Unfortunately it is impossible to unsubscribe from the list.
Once subscribed that is it for life- or the closure of the list
whichever is sooner.

HOWEVER it is possible to unsubscribulate, and perhaps this is what
you intended.

To do this one must first email some of the more cantakerous :))
members at least 15 times asking some annoying questions and then in
absolute fury you'll find yourself directed to the PICLIST web page
where unsubscribulation is explained in detail.

If you're really lucky these direction will also appear at the bottom
of the messages.

Your final option would be to purchase a PicList T-Shirt or Mug these
also have the unsubscriptulating directions on them.

Regards

bodgy o:))
--
cdb, .....bodgy1spam_OUTspamoptusnet.com.au on 19/07/2002

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email TakeThisOuTlistserv.....spamTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body


2002\07\19@021649 by Dave King

flavicon
face
>Your final option would be to purchase a PicList T-Shirt or Mug these
>also have the unsubscriptulating directions on them.
>
>bodgy o:))

Ahh thats how you get one of those

"I unscribulated and all that happened was this lousy teeshirt"
teeshirts..... ;-]

If I unscribulate twice can I get a 2xl teeshirt?

Dave

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email TakeThisOuTlistservKILLspamspamspammitvma.mit.edu with SET PICList DIGEST in the body


2002\07\19@032736 by Russell McMahon

face
flavicon
face
"You can signoff any time you like, but you can never leave. Welcome to the
......."

(For anyone sufficiently inexperienced in Americana to be puzzled by this
line, change signoff to "check out" and use Google :-) ). (WAV files are
available on net).


           RM


{Quote hidden}

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email .....listservspamRemoveMEmitvma.mit.edu with SET PICList DIGEST in the body


2002\07\19@034442 by Roman Black

flavicon
face
"They stab it with their steely knives - but they just
can't kill the STUPENDOUS 16F877"
sigh, i'm sure this is OT by now...
-Roman


Russell McMahon wrote:
{Quote hidden}

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2002\07\19@045948 by dr. Imre Bartfai

flavicon
face
--- [snip] ---
> Unfortunately it is impossible to unsubscribe from the list.
> Once subscribed that is it for life- or the closure of the list
> whichever is sooner.
              ^^^^^^

I do not understand how the list could sense the termination of
subscriber's life. I guess this may not lead to an unsubscription. Even if
it would so, the marked word should be changed to "later".

Regards,
Imre

--
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email TakeThisOuTlistservspamspammitvma.mit.edu with SET PICList DIGEST in the body


2002\07\19@050643 by john

flavicon
face
huh ? a doctor with a sense of humour .... ring the bells!

On Friday 19 July 2002 11:03 am, you wrote:
> --- [snip] ---
>
> > Unfortunately it is impossible to unsubscribe from the list.
> > Once subscribed that is it for life- or the closure of the list
> > whichever is sooner.
>
>                ^^^^^^
>
> I do not understand how the list could sense the termination of
> subscriber's life. I guess this may not lead to an unsubscription. Even if
> it would so, the marked word should be changed to "later".
>
> Regards,
> Imre

--
Thank-you for your time.

John Ward

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2002\07\19@052801 by Alan B. Pearce

face picon face
Hmm, not only can one never leave, but one cannot get in :))))


>Your  message is  being returned  to you  unprocessed because  it
>looks  like a LISTSERV command, rather than material intended for
>distribution to the members of the PICLIST list. .........

I received the above when trying to send this :)))

> "You can signoff any time you like, but you can never leave.
>Welcome to the ......."

and here is me thinking they are made in Arizona, not California.

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2002\07\19@065806 by Peter L. Peres

picon face
On Fri, 19 Jul 2002, Russell McMahon wrote:

>"You can signoff any time you like, but you can never leave. Welcome to the
>......."

You can't find it by that line, replace 'signoff' with 'check out' imho.

Peter

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2002\07\19@091611 by M. Adam Davis

flavicon
face
Typically the technician who manages the email account of the recently
deceased notices the exceptional disk space the deceased is using on the
email server and notifies the piclist that they've passed on, ceased to
be, expired, stiff, bereft of life, rests in peace, pushing up the
daisies, kicked the bucket, shuffled off his/her mortal coil, run down
the curtian and joined the choir invisible.

It has happened before - I think it was a co-worker who notified the list.

Coincidently the list was pretty rude about it.  It went something like
this:

Email: How do I unsubscribe from the list
List:  Lots of rude comments, jibes, etc (the usual)
Email: Actually, I'm unsubscribing my coworker (this is not my email).
He passed away last week and I've been taking care of his email.
List:  Oops!  Sorry!

So it doesn't always pay off to assume the person asking to get off is
unable to follow directions.  Could be they've never read them.

-Adam

PS:   THIS IS AN EX-PARROT!!


dr. Imre Bartfai wrote:

{Quote hidden}

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'PIC'
2003\04\24@005445 by Satheesh
flavicon
face
Hi dudes
 I am going to work on a speech recognition project of mine. I was
wondering which PIC to use. Has anyone done anything similar to this before?
I will be using vector quantization to perform a limited isolated speech
recognition.

Cheers
shik
{Original Message removed}


'pic'
2005\04\15@030145 by Arge
flavicon
face

2005\04\23@163538 by Mike Ryan

picon face
Hi,

Hi,

Just wondering if you could help me out,

I need to perform basic integration and basic differentiation using 8 bit algorithms in assembler,

Would you know the basic approach or where I could find out how to do it,

Connor




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2005\04\23@171037 by William Chops Westfield

face picon face

On Apr 23, 2005, at 1:35 PM, Mike Ryan wrote:

> I need to perform basic integration and basic differentiation using
> 8 bit algorithms in assembler,
>
> Would you know the basic approach or where I could find out how to do
> it,
>
The basic approach should be described in any beginning numeric
algorithms book,
and consists essentially a return to the basics of calculus - picking
lines that
approximate the slope on your graph, or adding together
rectangles/trapazoids/etc.

HOWEVER; those algorithms are likely to be heavily based on relatively
accurate
floating point (part of the numeric analysis class is learning to keep
track of
the errors that accumulate in spite of having 32+ bits of number.)  
You're likely
to need an awful lot of thought applied to doing things with 8 bit
integers instead.
(just for instance, differentiation is the slope of a line, and it's
going to
be less than 1 about half the time...)

BillW

2005\04\24@150707 by Peter

picon face

On Sat, 23 Apr 2005, Mike Ryan wrote:

> Just wondering if you could help me out,
>
> I need to perform basic integration and basic differentiation using 8
> bit algorithms in assembler,
>
> Would you know the basic approach or where I could find out how to do it,

The differential of a vector of samples taken at constant intervals is a
vector that contains the difference between adjacent samples in the
input vector, for each pair of samples. The first output sample will be
missing (it's a point of discontinuity so the differential is
undefined). So:

diff[0] = NaN;
for i=1; i<N; ++i
       diff[i] = input[i] - input[i-1];

Each diff[i] is the slope of the line defined by the points input[i] and
input[i-1], with ordinate length 1. The differential vector is offset
from the original vector by 1/2 sample to the right on the abscissa (X
or t axis).

The integral of a vector of samples as above can be described otherwise
like: the input vector is the differential vector of the integral
vector of the input. So, from above:

       input[i] = int[i] - int[i-1];

The missing part is 'c' the undefined part of the integral, and we need
to supply it before starting. So int[0] = input[i] + c, int[i] =
input[i] + int[i-1], ... . Note that we add a lot and the potential for
overflow is huge (and you really want to check for it and limit the
integral function or something similar):

c = 2^7; // for example
int[0] = input[0] + c;
for i=1; i<N; ++i
       int[i] = input[i] + int[i-1];

Again as above the int[i] vector is offset wrt to the input abscissa by
1/2 sample to the left.

The offset problem can be fixed for example by oversampling to 2 x the
sample rate and interpolation (which can be simple or complex). It
automatically increases the accuracy of the int[] and diff[] vectors, if
the interpolation function is well choosen.

These forms be rewritten to operate on a stream if needed (remove the
loop and execute a step with every input event or interrupt or stream
byte or what you need). Note that if c=0 then int[N-1] is the area under
the graph described by input[0..N] if you remove the sign from input[i]
before adding it in.

Peter

2005\04\29@073827 by vasile surducan

picon face
Dumitre,

I'm affraid you've asked a wrong question. First you'll not be able to
use "all 16F and 18F pics". So I suggest to define exactly which one
(or more) you'll use and then to choose a free programmer already
available on the web.
The best free software programmer is without doubt ICPROG,
http://www.ic-prog.com, which works OK with many hardware. However not all
pics are supported by icprog.
The second choose will be the port interface for the PC, if you have a
poor 3Ghz laptop then you'll have only USB and free USB pic programmer
combination (hardware and software) are quite hard to found.
so, choose then...
:)


best regards,
Vasile


On 4/29/05, Dumitru Stama <spamBeGonelistEraseMEspammirosat.com> wrote:
{Quote hidden}

> --


'PIC'
2005\07\06@144104 by vasile surducan
picon face
On 6/28/05, Maarten Hofman <cashimorspamBeGonespamgmail.com> wrote:
> > Read the datasheet for the PIC16F84 or PIC16F628 (I'd suggest the F628)
> > or if you already have a breadboard/experimenter's kit, read the data
> > sheet for the part on that kit's protoboard.
>
> I'd seriously recommend AGAINST the PIC16F84A.


 Disagree. Chose the simplest PIC with the smallest numbers of
special function registers and without fancy facilities like AD,
comparators PWM etc. Take a look on the web. PIC16F84 is still the
best represended as ideeas, complete application, codes etc. This does
not mean you have to remain sticked on the 16F84. However will be the
simplest PIC datasheet for reading. AFTER you will knew well 16F84 use
any PIC from the 16 or 18 series you may want. These old PIC users
forgot how difficult was to write the first piece of own code.

best, Vasile

2005\07\07@115950 by vasile surducan

picon face
On 7/7/05, Wouter van Ooijen <RemoveMEwouter@spam@spamspamBeGonevoti.nl> wrote:
{Quote hidden}

 Try something powerful than Philips ARM :

 http://www.sandbrigetech.com

 the best DSP core in the world. Ask for SB3010.

Vasile

2005\07\07@120231 by vasile surducan

picon face
On 7/7/05, vasile surducan <.....vsurducan@spam@spamEraseMEgmail.com> wrote:
{Quote hidden}

    wrong, it's:

    http://www.sandbridgetech.com
>
>   the best DSP core in the world. Ask for SB3010.
>
>  Vasile
>

2005\07\07@142956 by Steve Murphy

flavicon
face

>  Try something powerful than Philips ARM :
>
>  http://www.sandbrigetech.com
>
>  the best DSP core in the world. Ask for SB3010.
>
>
>  
>
You probably meant: http://www.sandbridgetech.com/


'PIC'
2011\02\26@145600 by DIN ROFIE
picon face




----- Forwarded Message ----
From: DIN ROFIE <.....babi_busuk2STOPspamspam@spam@yahoo.com>
To: piclistEraseMEspam@spam@mit.edu
Sent: Sun, February 27, 2011 3:02:11 AM
Subject: PIC


hey,
i really need help on pic16f877 using mplab
previously,i only play along with pic 16f84
i intend to create a program like a temperature controller
1. set temperature
2.if temperature inside box exceeding set temperature heater will off
below i send along the flow chart and the circuit of the design
hope you guys can help me about this program with fully write program or any info
thanks


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