Hi fellow piclisters

I've finally done it - I ordered some sample 18F442 pics from Microchip and
thought I'd start to move away from the 16F series. Samples turned up in a
very prompt fashion from Microchip and sat on my desk for a few days before
I decided to bite the bullet and learn something new.

I already had some code on a 16F628 that appeared to be working without any
problems - I'd written and debugged 380 lines of code to drive an OEM
Vehicle I2C display and it had taken me a couple of weeks to get it working
satisfactorily but the final code for the application would have problems
fitting into a 16F877 so I decided to work on a slightly more powerful Pic.

About an hour ago, I set about porting the code from the 16F628 onto the
18F442. I read the migration PDF, had a browse through the datasheet for the
18F itself and the more I read, the easier it seemed.

I removed all the bank switching code from the 16F asm file and changed the
ports to run on PORTB instead of PORTA, changed one line with a RLF
instruction to RLCF,  set the configuration bits for the 18F, popped it into
my Picstart and programmed a chip.

Lo and behold, it worked perfectly first time. No problems, no errors just a
perfect move over to the 18F series.

I've got to say I'm impressed - it cant be this easy !!!!

Does anyone know of any gotchas for moving from 16F to 18F processors ? I'm
sure I'll hit a few in the not too distant future but any advance warning of
what to expect would be appreciated.

Cheers

Dom

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