CPU::Emulator::6502::Op::BCC - Branch on carry clear

Games-NES-Emulator documentation

Contained in the Games-NES-Emulator distribution.

Index

NAME
SYNOPSIS
DESCRIPTION
METHODS
- bcc( )
AUTHOR
COPYRIGHT AND LICENSE
SEE ALSO
- * CPU::Emulator::6502

Code Index:

package CPU::Emulator::6502::Op::BCC
- bcc
EOF

NAME

CPU::Emulator::6502::Op::BCC - Branch on carry clear

SYNOPSIS

DESCRIPTION

METHODS

bcc( )

Branches when the carry flag is clear.

AUTHOR

Brian Cassidy <bricas@cpan.org>

COPYRIGHT AND LICENSE

Copyright 2007 by Brian Cassidy

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

* CPU::Emulator::6502

Games-NES-Emulator documentation

Contained in the Games-NES-Emulator distribution.

package CPU::Emulator::6502::Op::BCC;

use strict;
use warnings;

use constant INSTRUCTIONS => {
    0x90 => {
        cycles => 2,
        code   => \&bcc,
    }
};

sub bcc {
    my $self = shift;
    my $reg = $self->registers;

    $self->branch_if( !($reg->{status} & CPU::Emulator::6502::SET_CARRY) );
}

1;