Martin,

The EQU directive typically creates an entry in the assembler's symbol
table, and
assigns a value to it.

#define is a preprocessor directive, which is more of a text-substitution
approach.

In the example you give, there is no real difference. However, in some
assemblers,
and in C, #define can be used in a much more versatile manner, for instance,
for
creating macros.

Cheers,
Ben


----- Original Message -----
From: Martin SchŠfer <Schaefer@ELEKTRONIK21.DE>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, October 25, 1999 12:18 PM
Subject: Assembler Question (MPASM)


> Hi Pic freaks,
>
> I'm programming pic's for some years now. But there are always some
> remaining mysteries. One of them:
>
> What is the difference between
>
>                                 counter        equ        0x20
> and
>                                 #define        counter      0x20
>
>
> If I use counter in my assembler code like
>
>     movwf    counter
>
> there seems to be no difference.
>
>
> Thanks for answering a such simple question :-)
>
>
> Martin