gnupic: gpasm Ensure bank bits are correct
Subject:
Re: gpasm Ensure bank bits are correct
From:
Anthony Tekatch ####@####.####
Date:
26 Apr 2002 17:51:27 -0000
Message-Id: <20020426134603.4abc256b.anthony@unihedron.com>
On Fri, 26 Apr 2002 10:18:44 -0700 (PDT), Scott Dattalo ####@####.#### wrote:
> a trick from Andy Warren:
>
> movf (some_reg ^ 0x80), w
>
> If some_reg is in bank1, then the xor will make the msb 0 and the
> assembler will be happy. If some_reg is not in bank1, then the msb gets
> set and the assembler will complain - which in this case is good.
Oh, that's interesting. Thank you.
Is there a way to do that without extra code of the movf? Here is the code
that gpasm is complaining about:
BSF STATUS, RP0
BCF STATUS, RP1
BCF PIE1,TXIE ;disable the interrupt
The first two lines set the proper bits for bank 1 and the third line
accesses a register in bank 1 yet gpasm thinks bank 0 is still active.
--
Anthony Tekatch
