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use strict; |
use strict; |
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use Carp qw/confess/; |
use Carp qw/confess/; |
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use lib './lib'; |
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#use Time::HiRes qw(time); |
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use File::Slurp; |
use File::Slurp; |
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use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
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use M6502; |
use M6502; # import @mem $PC and friends |
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use Screen qw/$white $black/; |
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use base qw(Class::Accessor VRac M6502 Screen Prefs Tape); |
use base qw(Class::Accessor VRac M6502 Screen Prefs Tape); |
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#__PACKAGE__->mk_accessors(qw()); |
#__PACKAGE__->mk_accessors(qw()); |
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=head1 VERSION |
=head1 VERSION |
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Version 0.04 |
Version 0.05 |
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=cut |
=cut |
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our $VERSION = '0.04'; |
our $VERSION = '0.05'; |
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=head1 SUMMARY |
=head1 SUMMARY |
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=head1 FUNCTIONS |
=head1 FUNCTIONS |
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=head2 boot |
=head2 run |
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Start emulator, open L<Screen>, load initial ROM images, and render memory |
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my $emu = Orao->new({}); |
Start emulator, open L<Screen>, load initial ROM images, and start emulator loop |
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$emu->boot; |
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=cut |
=cut |
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our $emu; |
our $emu; |
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select(STDERR); $| = 1; |
sub run { |
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sub boot { |
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my $self = shift; |
my $self = shift; |
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warn "Orao calling upstream init\n"; |
warn "Orao calling upstream init\n"; |
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$self->SUPER::init( |
$self->SUPER::init( |
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read => sub { $self->read( @_ ) }, |
read => sub { $self->read( @_ ) }, |
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warn "emulating ", $#mem, " bytes of memory\n"; |
warn "emulating ", $#mem, " bytes of memory\n"; |
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# $self->scale( 2 ); |
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$self->show_mem( 1 ); |
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$self->open_screen; |
$self->open_screen; |
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$self->load_rom({ |
$self->load_rom({ |
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# 0x1000 => 'dump/SCRINV.BIN', |
# 0x1000 => 'dump/SCRINV.BIN', |
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# should be 0x6000, but oraoemu has 2 byte prefix |
# should be 0x6000, but oraoemu has 2 byte prefix |
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# 0x5FFE => 'dump/screen.dmp', |
# 0x5FFE => '/home/dpavlin/orao/dump/screen.dmp', |
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# 0xC000 => 'rom/Orao/BAS12.ROM', |
# 0xC000 => 'rom/Orao/BAS12.ROM', |
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# 0xE000 => 'rom/Orao/CRT12.ROM', |
# 0xE000 => 'rom/Orao/CRT12.ROM', |
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0xC000 => 'rom/Orao/BAS13.ROM', |
0xC000 => 'rom/Orao/BAS13.ROM', |
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$self->trace( 0 ); |
$self->trace( 0 ); |
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$self->debug( 0 ); |
$self->debug( 0 ); |
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warn "rendering video memory\n"; |
warn "rendering memory\n"; |
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$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
$self->render_mem( @mem ); |
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if ( $self->show_mem ) { |
if ( $self->show_mem ) { |
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warn "rendering memory map\n"; |
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$self->render_mem( @mem ); |
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my @mmap = ( |
my @mmap = ( |
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0x0000, 0x03FF, 'nulti blok', |
0x0000, 0x03FF, 'nulti blok', |
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0x0400, 0x5FFF, 'korisnički RAM (23K)', |
0x0400, 0x5FFF, 'korisnički RAM (23K)', |
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0xE000, 0xFFFF, 'sistemski ROM', |
0xE000, 0xFFFF, 'sistemski ROM', |
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); |
); |
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print "Orao memory map:"; |
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while ( @mmap ) { |
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my ( $from, $to, $desc ) = splice(@mmap, 0, 3); |
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printf("%04x-%04x %s\n", $from, $to, $desc); |
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} |
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} |
} |
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$self->sync; |
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$self->trace( $trace ); |
$self->trace( $trace ); |
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$self->debug( $debug ); |
$self->debug( $debug ); |
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#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
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warn "Orao boot finished", |
warn "Orao boot finished", |
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$self->trace ? ' trace' : '', |
$self->trace ? ' trace' : '', |
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$self->debug ? ' debug' : '', |
$self->debug ? ' debug' : '', |
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M6502::reset(); |
M6502::reset(); |
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$self->booted( 1 ); |
# $self->load_tape( '../oraoigre/bdash.tap' ); |
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} |
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=head2 run |
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Run interactive emulation loop |
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$emu->run; |
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=cut |
$self->loop( sub { |
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my $run_for = shift; |
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warn sprintf("about to exec from PC %04x for %d cycles\n", $PC, $run_for) if $self->trace; |
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M6502::exec( $run_for ); |
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$self->render_vram; |
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}); |
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}; |
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sub run { |
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my $self = shift; |
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$self->boot if ( ! $self->booted ); |
=head1 Helper functions |
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# $self->load_tape( '../oraoigre/bdash.tap' ); |
=head2 write_chunk |
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$self->loop; |
Write chunk directly into memory, updateing vram if needed |
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}; |
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=head1 Helper functions |
$emu->write_chunk( 0x1000, $chunk_data ); |
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=cut |
=cut |
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# write chunk directly into memory, updateing vram if needed |
sub write_chunk { |
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sub _write_chunk { |
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my $self = shift; |
my $self = shift; |
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my ( $addr, $chunk ) = @_; |
my ( $addr, $chunk ) = @_; |
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$self->write_chunk( $addr, $chunk ); |
$self->SUPER::write_chunk( $addr, $chunk ); |
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my $end = $addr + length($chunk); |
my $end = $addr + length($chunk); |
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my ( $f, $t ) = ( 0x6000, 0x7fff ); |
my ( $f, $t ) = ( 0x6000, 0x7fff ); |
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$t = $end if ( $end < $t ); |
$t = $end if ( $end < $t ); |
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warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
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$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
$self->render_vram; |
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$self->render_mem( @mem ) if $self->show_mem; |
$self->render_mem( @mem ); |
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} |
} |
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=head2 load_image |
=head2 load_image |
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if ( $size == 65538 ) { |
if ( $size == 65538 ) { |
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$addr = 0; |
$addr = 0; |
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warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, substr($buff,2) ); |
$self->write_chunk( $addr, substr($buff,2) ); |
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return 1; |
return 1; |
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} elsif ( $size == 32800 ) { |
} elsif ( $size == 32800 ) { |
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$addr = 0; |
$addr = 0; |
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warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, substr($buff,0x20) ); |
$self->write_chunk( $addr, substr($buff,0x20) ); |
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return 1; |
return 1; |
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} |
} |
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printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, $buff ); |
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return 1; |
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my $chunk; |
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my $pos = 0; |
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while ( my $long = substr($buff,$pos,4) ) { |
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my @b = split(//, $long, 4); |
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$chunk .= |
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( $b[3] || '' ) . |
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( $b[2] || '' ) . |
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( $b[1] || '' ) . |
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( $b[0] || '' ); |
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$pos += 4; |
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} |
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$self->_write_chunk( $addr, $chunk ); |
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printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->write_chunk( $addr, $buff ); |
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return 1; |
return 1; |
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}; |
}; |
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sub read { |
sub read { |
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my $self = shift; |
my $self = shift; |
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my ($addr) = @_; |
my ($addr) = @_; |
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return if ( $addr > 0xffff ); |
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my $byte = $mem[$addr]; |
my $byte = $mem[$addr]; |
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confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
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warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
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return $self->read_tape; |
return $self->read_tape; |
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} |
} |
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$self->mmap_pixel( $addr, 0, $byte, 0 ); |
$self->mmap_pixel( $addr, 0, $byte, 0 ) if $self->show_mem; |
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return $byte; |
return $byte; |
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} |
} |
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confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
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} |
} |
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$self->mmap_pixel( $addr, $byte, 0, 0 ); |
$self->mmap_pixel( $addr, $byte, 0, 0 ) if $self->show_mem; |
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$mem[$addr] = $byte; |
$mem[$addr] = $byte; |
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return; |
return; |
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} |
} |
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=head1 Architecture specific |
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=head2 render_vram |
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Render one frame of video ram |
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$self->render_vram; |
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=cut |
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my @flip; |
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foreach my $i ( 0 .. 255 ) { |
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my $t = 0; |
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$i & 0b00000001 and $t = $t | 0b10000000; |
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$i & 0b00000010 and $t = $t | 0b01000000; |
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$i & 0b00000100 and $t = $t | 0b00100000; |
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$i & 0b00001000 and $t = $t | 0b00010000; |
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$i & 0b00010000 and $t = $t | 0b00001000; |
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$i & 0b00100000 and $t = $t | 0b00000100; |
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$i & 0b01000000 and $t = $t | 0b00000010; |
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$i & 0b10000000 and $t = $t | 0b00000001; |
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#warn "$i = $t\n"; |
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$flip[$i] = $t; |
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} |
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sub render_vram { |
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my $self = shift; |
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my $pixels = pack("C*", map { $flip[$_] } @mem[ 0x6000 .. 0x7fff ]); |
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my $vram = SDL::Surface->new( |
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-width => 256, |
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-height => 256, |
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-depth => 1, # 1 bit per pixel |
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-pitch => 32, # bytes per line |
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-from => $pixels, |
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); |
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$vram->set_colors( 0, $black, $white ); |
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$self->render_frame( $vram ); |
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} |
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=head2 cpu_PC |
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Helper metod to set or get PC for current architecture |
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=cut |
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sub cpu_PC { |
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my ( $self, $addr ) = @_; |
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if ( defined($addr) ) { |
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$PC = $addr; |
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warn sprintf("running from PC %04x\n", $PC); |
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}; |
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return $PC; |
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} |
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=head1 AUTHOR |
=head1 AUTHOR |
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |