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PICList Thread
'PICSTART PLUS upgrade necessary??? (I hope not)'
1999\12\21@122530 by Lea

picon face
Hi Everyone.

Yesterday, talking with a salesman from the company who I buy PIC's, he told
me that the PIC 16C73 and 16C74 are not anymore in production, and in
replacement of these parts, are available 16C73B and 16C74B (I need windowed
versions).
He told me that I must upgrade the chip version (firmware) of my Picstart Plus
(my chip has on it the following: FE4Dh 9/25/96 U21 PSF12000)

It is true???, if I do that can I program older versions of pics too??, he
told me that the best way will be to buy a already programmed chip of the
picstart that cost me about 10 bucks and replace it on the picstart.
Do you think that it is a good idea?, there is another way?.

and the last one, as result of firmware change, and the chip models (16C74B
not A), can I still use the same version of MPLAB or should I download a
newer version? (I have the 1997 version).

sorry for my bad english, any help will be very appreciated.
  Leandro J. Laporta (LU2AOQ)
  mail: spam_OUTlu2aoqTakeThisOuTspamyahoo.com
  wrk: Arg. Assoc. for Space Technology.
  ham: TCP/IP high speed group HSG


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1999\12\21@124120 by Mauricio Jancic

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face
I'been programing this last weeks the 16C73 with  my '96 version of Picstart pluss with no problem. Anyway, if you wish to update your firmware you can always program older PICs.

       Mauricio

-----Mensaje original-----
De:     Lea [SMTP:.....lu2aoqKILLspamspam@spam@YAHOO.COM]
Enviado el:     Martes, 21 de Diciembre de 1999 02:21 p.m.
Para:   PICLISTspamKILLspamMITVMA.MIT.EDU
Asunto: PICSTART PLUS upgrade necessary??? (I hope not)

Hi Everyone.

Yesterday, talking with a salesman from the company who I buy PIC's, he told
me that the PIC 16C73 and 16C74 are not anymore in production, and in
replacement of these parts, are available 16C73B and 16C74B (I need windowed
versions).
He told me that I must upgrade the chip version (firmware) of my Picstart Plus
(my chip has on it the following: FE4Dh 9/25/96 U21 PSF12000)

It is true???, if I do that can I program older versions of pics too??, he
told me that the best way will be to buy a already programmed chip of the
picstart that cost me about 10 bucks and replace it on the picstart.
Do you think that it is a good idea?, there is another way?.

and the last one, as result of firmware change, and the chip models (16C74B
not A), can I still use the same version of MPLAB or should I download a
newer version? (I have the 1997 version).

sorry for my bad english, any help will be very appreciated.
  Leandro J. Laporta (LU2AOQ)
  mail: .....lu2aoqKILLspamspam.....yahoo.com
  wrk: Arg. Assoc. for Space Technology.
  ham: TCP/IP high speed group HSG


__________________________________________________
Do You Yahoo!?
Thousands of Stores.  Millions of Products.  All in one place.
Yahoo! Shopping: http://shopping.yahoo.com

1999\12\21@141806 by Andre Abelian

picon face
> Hi Everyone.
>
> Yesterday, talking with a salesman from the company who I buy PIC's, he
told
> me that the PIC 16C73 and 16C74 are not anymore in production, and in
> replacement of these parts, are available 16C73B and 16C74B (I need
windowed
> versions).
> He told me that I must upgrade the chip version (firmware) of my Picstart
Plus
> (my chip has on it the following: FE4Dh 9/25/96 U21 PSF12000)
>
> It is true???, if I do that can I program older versions of pics too??, he
> told me that the best way will be to buy a already programmed chip of the
> picstart that cost me about 10 bucks and replace it on the picstart.
> Do you think that it is a good idea?, there is another way?.

Yes it is true. there is more then that you need to modify the
hardware too by replacing one resistor.
I keep the old one inside of picstart+ and keep programing  JW part.
Do not waist your 10 $ for OTP part get JW part.

Andre

1999\12\21@225401 by Ken Webster

flavicon
face
...
>> replacement of these parts, are available 16C73B and 16C74B
...
>> He told me that I must upgrade the chip version (firmware) of my
>> Picstart Plus
>


I just downloaded the latest firmware (2.01.00) from Microchip's web site.
It comes with a readme file listing the compatability of each firmware
release with various PICs.  The list indicates that the 16C73B and 16C74B
are both programmable by the oldest firmware.

This confirms my experiences -- I routinely program 16C73B's and have not
changed the firmware in my Picstart Plus which I purchased just after they
came out.  I am finally going to upgrade the firmware, though, because of
two things:

1). The new version of MPLab (4.12.00) keeps reminding me that I have old
firmware every time I establish a connection with the programmer.

2). I'm finally trying a project which requires 16C505s and if I choose
16C505 as the processor type, MPLab complains and says it is incompatible
with my programmer's firmware (i.e. it won't even let me try to program a
16C505).

So .. if MPLab allows you to select 16C73B then your firmware is ok.

Ken

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