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'Help ITU programmer only downloads 1K of my code!'
1996\10\05@161030 by NEIL GANDLER

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I just finished a program for my PIC16c74 that was approximately
1900 lines (atleast according to the message from the microchip assembler).
I programmed my pics as I always had with my ITU pic programmer, and
apparantly, this programmer will not program more than 1K of Eprom, which
leaves half of my code out. This is how I came to that conclusion.

       1. When trying to read the contents of the PIc through the ITU
programming utilities, it only shows 1K on the Eprom's memory.
       2. When running my code, and I hit a subroutine that starts
after the 1K mark, the PIC resets.

Now I am almost sure the c74 is divided into 2 pages w/ 2k in each, so
there is no need to specify page bits in my code, besides, why is only
1K being downloaded to the PIC, perhaps I am missing something. Can
anyone help?

               Neil Gandler

1996\10\05@190714 by 87654321

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> I just finished a program for my PIC16c74 that was approximately
>1900 lines (atleast according to the message from the microchip assembler).
>I programmed my pics as I always had with my ITU pic programmer, and
>apparantly, this programmer will not program more than 1K of Eprom, which
>leaves half of my code out. This is how I came to that conclusion.
>
>        1. When trying to read the contents of the PIc through the ITU
>programming utilities, it only shows 1K on the Eprom's memory.
>        2. When running my code, and I hit a subroutine that starts
>after the 1K mark, the PIC resets.
>
>Now I am almost sure the c74 is divided into 2 pages w/ 2k in each, so
>there is no need to specify page bits in my code, besides, why is only
>1K being downloaded to the PIC, perhaps I am missing something. Can
>anyone help?
>
>                Neil Gandler
>
>
call ITU...they are extremely helpful....

1996\10\06@005139 by Martin J. Maney

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On Sat, 5 Oct 1996, NEIL GANDLER wrote:

>  I just finished a program for my PIC16c74 that was approximately
> 1900 lines (atleast according to the message from the microchip assembler).
> I programmed my pics as I always had with my ITU pic programmer, and
> apparantly, this programmer will not program more than 1K of Eprom, which
> leaves half of my code out. This is how I came to that conclusion.

Been there, did that.  The ITU has a tiny configuration file that
specifies the highest address that will be programmed.  I'm not sure now
if I somehow got the original installation copy, which is set to 1K, or
if I deleted it and the software defaulted to 1K, but I had exactly this
experience a while ago.  It wasn't until I got around to questioning the
config file (which I knew about, but dismissed because I had set it
months earlier and why would I have changed it?) that I found the trivial
answer to the mystery.

I still don't know how it got damaged, but I certainly do know what I'll
check immediately if I ever see evidence of incomplete programming ever
again!

Luck!

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