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lib/Acme/6502.pm  view on Meta::CPAN

Read a chunk of data from C<$start> to C<$end> - 1 into a string.

=item C<read_str( $addr )>

Read a carriage return terminated (0x0D) string from the
specified address.

=item C<run( $count [, $callback ] )>

Execute the specified number of instructions and return. Optionally a
callback may be provided in which case it will be called before each
instruction is executed:

    my $cb = sub {
        my ($pc, $inst, $a, $x, $y, $s, $p) = @_;
        # Maybe output trace info
    }
    
    $cpu->run(100, $cb);

=item C<write_8( $addr, $value )>

Write the byte at the specified address.

=item C<write_16( $addr, $value )>

Write a sixteen bit (low, high) value at the specified address.

=item C<write_32( $addr, $value )>

Write a 32 bit value at the specified address.

=item C<write_chunk( $addr, $string )>

Write a chunk of data to memory.

=back

=head1 DIAGNOSTICS

=over

=item C<< Bad instruction at %s (%s) >>

The emulator hit an illegal 6502 instruction.

=back

=head1 CONFIGURATION AND ENVIRONMENT

Acme::6502 requires no configuration files or environment variables.

=head1 DEPENDENCIES

None.

=head1 INCOMPATIBILITIES

None reported.

=head1 BUGS AND LIMITATIONS

Doesn't have support for hardware emulation hooks - so memory mapped I/O
is out of the question until someone fixes it.

Please report any bugs or feature requests to
C<bug-acme-6502@rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org>.

=head1 AUTHOR

Andy Armstrong  C<< <andy@hexten.net> >>

Brian Cassidy C<< <bricas@cpan.org> >>

=head1 LICENCE AND COPYRIGHT

Copyright (c) 2006-2012, Andy Armstrong C<< <andy@hexten.net> >>. All
rights reserved.

This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlartistic>.

=head1 DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.