CPU::Emulator::6502::Op::BMI - Branch on result minus

Games-NES-Emulator documentation

Contained in the Games-NES-Emulator distribution.

Index

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

Code Index:

package CPU::Emulator::6502::Op::BMI
- bmi
EOF

NAME

CPU::Emulator::6502::Op::BMI - Branch on result minus

SYNOPSIS

DESCRIPTION

METHODS

bmi( )

Branches if the result is negative.

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::BMI;

use strict;
use warnings;

use constant INSTRUCTIONS => {
    0x30 => {
        cycles => 2,
        code   => \&bmi,
    }
};

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

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

1;