I've hit a snag...since I've actually grown past 2K of code (how did I wr=
ite
that much assembly and got my LCD and EEPROM stuff to work!)

So if you look at jumping into the next page of 2K code space on a 16F874=
, it
requires that any goto has the following :

        bcf     PCLATH,4
        bsf     PCLATH,3

This allows the upper bits of the address to be indexed and makes perfect=

sense to me but does not seem to want to work. It appears to hang or bran=
ch
off to some unkown location (I base this on what the LCD display has on
it...my initial branch should display something and it does not)

Also, any CALL should push/pop the entire address right? I even placed al=
l my
called subroutines in the second page and still didnt want to behave.

Once I set bit 3, does it get overwritten? In other words, if I have an
automatic and manual mode to my my controller, and make it such that all
manual operations occur in the second page, I should never have to touch =
the
PCLATH bits until I go back to automatic mode (first page). Unless someth=
ing
is writing over and nailing these bits.  I suppose I might have to break =
down
and buy an ICD to see what is going on?

Any help would be appreciated.  email direct to ut_imagineering@yahoo.com=
 if
you like.

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