I'm trying to implement my first PIC18 project (after spending all my=20
PIC work so far in the PIC16 family).  So far it's a big improvement but=20
I'm having a little trouble figuring out the best way to do jump tables=20
in this architecture.

I have three questions around this which I haven't seen anything=20
specific to the PIC18 family in my searching so far:

	1. If I do math on TBLPTRL (adds, increments, etc), does the operation=20
automatically overflow into TBLPTRU:TBLPTRH or does the low register=20
just wrap around on its own?

	2. Is it still true that math on PCL clears bit 8 of the PC? I don't=20
see that in the datasheet but hear people talking about this.  I'm=20
guessing it doesn't apply to PIC18.

	3. For a true jump table (not just a data lookup table), is the=20
preferred method to do a computed GOTO into a block of other GOTOs, or a=20
table of addresses retrieved by TBLRD and then poked into the PC=20
directly, or something else?

Thanks,
Steve
--=20
Steve Willoughby / steve@alchemy.com
"A ship in harbor is safe, but that is not what ships are built for."
PGP Fingerprint 4615 3CCE 0F29 AE6C 8FF4 CA01 73FE 997A 765D 696C
--=20
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