gnupic: More nocturnal programming problems
Subject:
Re: More nocturnal programming problems
From:
David Willmore ####@####.####
Date:
18 Mar 2004 22:59:52 +0000
Message-Id: <200403182259.i2IMxA0t030814@localhost.localdomain>
> > msg_len EQU (message_end - message_start)
>
> Symbols assigned a value using EQU can't be changed. gpasm checks the
> value on each pass to make sure they match. On the first pass
> message_end and message_start have a value of 0. So msg_len has a value
> of 0. On second pass message_end is 125, so msg_len changes.
>
> You can change to the SET directive or use a #define. A few other
> options exist. Pick the one that suits you best.
VARIABLE msg_len=(message_end - message_start)
works perfectly. I tried SET, but it requires the variable to be
defined first, so why not put the value in the VARIABLE statement
in the first place? I looked at the opcodes produced and they've
got the right value in them (sublw msg_len comes out as 0x3C7D
and the msg_len is 125 or 0x7D).
Thanks, Craig and everyone else. Does the list take attachements?
If so, I'll post a version of the code for everyones enjoyment. :)
Cheers,
David
