WH Tan <PICLIST@mitvma.mit.edu> wrote:

> 2) Is the following set of codes have the same effect on program flow?
>
> A1 MOVLW 0x00
>    ADDWF PCL,f
>
> A2 GOTO A2

    No, these are different.  To make A1 do what A2 does, you'd need:

        A1  MOVLW -2
            ADDWF PCL

    Or, more generally:

        A1  MOVLW (A1A-A1)-1
        A1A ADDWF PCL

> B1 MOVLW 0xFF
>    ....
>    ADDWF PCL,f
>
> B2 GOTO $-1

    These are different, too.  To make B2 do what B1 does, you'd need
    something like this:

        B2  MOVLW ((B2A-B2)-1)-1
            ....
        B2A ADDWF PCL

    -Andy

=== Andrew Warren - aiw@cypress.com
===
=== Principal Design Engineer
=== Cypress Semiconductor Corporation

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