Re: A86: "not" for a byte or bit

Re: A86: "not" for a byte or bit

• To: assembly-86@lists.ticalc.org
• Subject: Re: A86: "not" for a byte or bit
• From: Trent Lillehaugen <tllilleh@polymail.cpunix.calpoly.edu>
• Date: Mon, 03 Nov 1997 19:27:14 -0800
• References: <345E8FCD.92FF33B0@jcave.com>
• Reply-To: assembly-86@lists.ticalc.org

David Piper wrote:

> I am making a routine and I need to "not" the byte I am using (or bit
> will work),  I know that this command is not valid for the Z80...
>
> So what do I use to do it.... I need the following results
>
> I need to change a (bit or byte) from 0 to 1 and 1 to 0...What is the
> best way to do this???

to acheive the same affect do this:

xor %11111111
that's the same as
'not a'

ex:
a   10111011
xor 11111111
---------------
     01000100



--
Trent Lillehaugen
Computer Engineering Major
California Polytechnic University, San Luis Obispo
<http://www.calpoly.edu/~tllilleh/a86/a86.html>
<mailto:tllilleh@polymail.calpoly.edu>

• Re: A86: "not" for a byte or bit
• From: MrManson <joemama@minot.com>

• A86: "not" for a byte or bit
• From: David Piper <piperc@jcave.com>

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