Tal Dayan <PICLIST@mitvma.mit.edu> wrote:

> If I use the following code to allocate variables, everything works
> just find except that the Watch window of the simulator does not allow
> to watch the variables:
>
>                      org 0xc
>    myFirstVar        res   1   ; allocate 1 byte
>    mySecondVar       res   1

    Correct.  That's because "res" and "org" relate to addresses in
    the PIC's CODE memory, not DATA memory.  Remember, the PIC has a
    Harvard architecture, in which code and data memories are
    separate; there's no need to "res" data memory.

> The workaround I am using is:
>
>                      org 0xc
>    myFirstVar        equ   $
>                      res   1
>    mySecondVar       equ   $
>                      res   1
>
> What is the 'right' way to allocate variables ?

    Forget the "res" and just use EQUs... Or use the CBLOCK
    directive, which does essentially the same thing as EQU.

    Example #1:

        myFirstVar    equ 0xC
        mySecondVar   equ myFirstVar+1

    Example #2:

            cblock 0xC
        myFirstVar
        mSecondVar
            endc

    -Andy

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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