Beware - PIC18F45J10 and #Device (PCH 4.025)

[Visitor]

Sorry if this is a repost or general knowledge. I seached and did not find any mention of this issue.

I ported code to the PIC18F45J10 and it compiled, but did not run.

I traced the listing and disassembly and everything looked perfect.

Finally, I looked at program memory (using MPLAB) and discovered that the first 4 words of program memory were 0xF0?? (aka "nop"). There was no "goto @main"

My first thought was that it was mis-allocation of the configuration bits (because there were 4 words affected). However after much frustration and downloads of all of the latest revisions of everything to no avail, I discovered that directive "#ID CHECKSUM" was the culprit.

Apparently, the #ID directive doesn't work well with the 45J10 - not surprising seeing as though the 45J10 does not have user ID memory space. (It would be nice if the compiler would error or warn.)

[abk]

That was well sported cos I've been trying to get just a simple printf("Hello"); to work using the pic18f45j10, but to no avil either, I only get gabbage character. So whats the remedy to correcting it so that it could work normally.