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'[PIC]: My Time Capsule'
2003\11\10@101028 by Mauricio Jancic

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       can I ask you, since english is not my native thongue: Are you
really blind or is just a form of expresion. If you are, how do you
manege to assembly circuit in the breadboard, protoboard or the way that
you call it.?

Best regards

Oh, by the way. If I where you, I'll use the F84 since as you say you
can then upgrade to the 628, and if you use the C64, you will be able to
upgrade to the F877 with minor soft changes.

Bye

Mauricio Jancic
Janso Desarrollos
Microchip Consultant
(54) - 11 - 4542 - 3519

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2003\11\10@110605 by Martin McCormick

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       I posted this message an hour or so ago and accidentally left
off the tag.  Apologies to those who will read both postings.

       I have been on this list for 7 years and have almost gotten
started programming PIC's a couple of times.  As a computer user who
happens to be blind, I started looking at PIC's just about the time
all the development software went from DOS to Windows so I wasn't sure
exactly what I was going to do to make it all work best.

       I use UNIX in my job and I got in to Linux at around that
time.  I had bought a couple of PIC programmers and some PIC's, but
the development software, programmer drivers, and even some of the
documentation presented one headache after another so I kept
procrastinating which is something I plan to quit doing first thing
tomorrow.

       Now, I have a Linux system that appears to support at least
one of the programmers I have well enough to program most of the
PIC's on hand so now, I am just writing a program, getting ready to
burn it in to a 16F84, possibly a 16f84A.  I'll have to get out the
box and find out what I bought, then.

       Now, for my PIC question.  Are any of the following so
obsolete that, if I built something with them, I couldn't replace it
with what's current without a total re-write of the program?

16C54 12c509JW 16F84 16C71JW 16c64jw 17C42

That is pretty much what I have on hand and I do have the UV eraser
for the JW parts.  If memory serves me, the 16c64JW is a 40-pin PIC
that was a sample included in the early PICStartB or C series
programmers around 1996.

       By the way, the Linux tools solve all the interface problems I
had before and it looks like things are about to rock.

       I did read the web page

http://www.finitesite.com/d3jsys/16F628.html

so I know that the 16F84 is obsolete but it sounds like I can go
ahead and use the few I have since their code will fit in to the
16F628.

       If things work out this time, I will get a PICStart Plus which
is supported under Linux.

Martin McCormick WB5AGZ  Stillwater, OK
OSU Information Technology Division Network Operations Group

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2003\11\10@131544 by Matt Redmond

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If you'd like a 16F628 I have an extra I'd be happy to
give you.  If you want it, send a mailing address to
mdredmond at charter.net.

-matt redmond
Dallas, Texas


On Mon, 10 Nov 2003 10:05:13 -0600
 Martin McCormick <spam_OUTmartinTakeThisOuTspamDC.CIS.OKSTATE.EDU> wrote:
{Quote hidden}

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2003\11\10@134327 by Olin Lathrop

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Martin McCormick wrote:
>         Now, for my PIC question.  Are any of the following so
> obsolete that, if I built something with them, I couldn't replace it
> with what's current without a total re-write of the program?
>
> 16C54 12c509JW 16F84 16C71JW 16c64jw 17C42

You sure know how to pick'em!  This is quite a lineup of museum pieces and
outright losers.  However, PIC code is quite portable between chips in the
same family, and even reasonably portable accross families, especially if
you use some discipline up front.

My advice if you're just starting now is to get a few 18F252 and don't
look back.  Except for wider choice of packages, the older chips are
pointless in low volume designs.  With the fixed 18F1320 there will soon
be an 18 pin package in the 18 family.  If you really need a smaller
package, then look at the 16F630, 12F629, and 12F675.  These are all
actually 16 family parts despite their name.  There is absolutely no
reason to mess with 12-bit core parts for low volume designs.

Hopefully we can start recommending the dsPICs soon.


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