CPU::Emulator::Z80::Register8R - the R register for a Z80

CPU-Emulator-Z80 documentation Contained in the CPU-Emulator-Z80 distribution.

Index

Code Index:

NAME

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CPU::Emulator::Z80::Register8R - the R register for a Z80

DESCRIPTION

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This class is a ...::Register8 with a weird inc() method

METHODS

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It has the same methods as its parent, with the following changes:

inc

The inc() method operates on the least significant 7 bits of the register only.

BUGS/WARNINGS/LIMITATIONS

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None known.

AUTHOR, COPYRIGHT and LICENCE

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Copyright 2008 David Cantrell <david@cantrell.org.uk>

This software is free-as-in-speech software, and may be used, distributed, and modified under the terms of either the GNU General Public Licence version 2 or the Artistic Licence. It's up to you which one you use. The full text of the licences can be found in the files GPL2.txt and ARTISTIC.txt, respectively.

CONSPIRACY

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This module is also free-as-in-mason software.

CPU-Emulator-Z80 documentation Contained in the CPU-Emulator-Z80 distribution. 
# $Id: Register8R.pm,v 1.2 2008/02/22 02:08:08 drhyde Exp $

package CPU::Emulator::Z80::Register8R;

use strict;
use warnings;

use vars qw($VERSION $AUTOLOAD);

use base qw(CPU::Emulator::Z80::Register8);

$VERSION = '1.0';


sub inc {
    my $self = shift;
    my $r = $self->get();
    $self->set(($r & 0b10000000) | (($r + 1) & 0b01111111));
}


1;