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'Branch and simulator on PIC17c4x'
1996\08\15@061201 by Frans Gunawan

1996\08\15@121957 by fastfwd

Frans Gunawan <spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU> wrote:

> How to unconditional branch (GOTO) in PIC17c4x:
>
>         org 0000
>         goto goto_here
>
>         org f000
> goto_here nop
>           ..
>
> Because 'goto' only allows within 8K page boundary!???.

Frans:

You're right; GOTO only works within 8K pages.  To jump outside the
current 8K page, you can load PCLATH with the high byte of the
destination address, then load PCL with the low byte.  For example:

           org 0000
           movlw high goto_here
           movwf pclath
           movlw low goto_here
           movwf pcl
           ...
           org f000
 goto_here nop

-Andy

Andrew Warren - .....fastfwdKILLspam@spam@ix.netcom.com
Fast Forward Engineering, Vista, California
http://www.geocities.com/SiliconValley/2499

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