Trying to be instructive, here. The "Subject" should include a very=20
brief description of the message, similar to what I have done. The=20
"[PIC]" should limit the audience to those intrested in PIC's. The=20
Subject helps narrow those who have intersest in a narrower area. :)=20
Might even include the term "TBLRD" or something more definitive.

On 11/10/13 10:34 AM, Larry Bradley wrote:
> I have an app that has been running fine on an 18F452 for years. I am
> trying to get it working on an 18F4620. I've read the conversion
> documents and made the appropriate changes.
>
> But I have one problem that I cannot figure out.
>
> I have a 64 byte area in program memory (at 0x7FC0) that contains
> calibration constants. These are initially compiled into the program.
>
> At initialization time, I copy these 64 bytes from the program area to
> an area in data ram, using TBLRD.
>
> The code works fine for the 452, but not for the 4620 - the data in the
> data ram is incorrect.
>
> The docs do not suggest any differences in reading from program memory
> (I know that writing is different, but I'm not doing that yet).
>
> Any suggestions as to what might be wrong? Code protection is not
> enabled.

--=20
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