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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 M6502 Screen Prefs Tape); |
use base qw(Class::Accessor VRac M6502 Screen Prefs Tape); |
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__PACKAGE__->mk_accessors(qw(booted)); |
#__PACKAGE__->mk_accessors(qw()); |
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=head1 NAME |
=head1 NAME |
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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->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/BAS12.ROM', |
# 0xC000 => 'rom/Orao/BAS12.ROM', |
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# 0xE000 => 'rom/CRT12.ROM', |
# 0xE000 => 'rom/Orao/CRT12.ROM', |
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0xC000 => 'rom/BAS13.ROM', |
0xC000 => 'rom/Orao/BAS13.ROM', |
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0xE000 => 'rom/CRT13.ROM', |
0xE000 => 'rom/Orao/CRT13.ROM', |
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}); |
}); |
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# $PC = 0xDD11; # BC |
# $PC = 0xDD11; # BC |
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$self->debug( 0 ); |
$self->debug( 0 ); |
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warn "rendering video memory\n"; |
warn "rendering video memory\n"; |
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$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
$self->render_vram; |
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if ( $self->show_mem ) { |
if ( $self->show_mem ) { |
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M6502::reset(); |
M6502::reset(); |
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$self->booted( 1 ); |
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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 |
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sub run { |
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my $self = shift; |
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$self->boot if ( ! $self->booted ); |
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# $self->load_tape( '../oraoigre/bdash.tap' ); |
# $self->load_tape( '../oraoigre/bdash.tap' ); |
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$self->loop; |
$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); |
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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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=head1 Helper functions |
=head1 Helper functions |
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=head2 load_rom |
=head2 write_chunk |
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called to init memory and load initial rom images |
Write chunk directly into memory, updateing vram if needed |
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$emu->load_rom; |
$emu->write_chunk( 0x1000, $chunk_data ); |
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=cut |
=cut |
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sub load_rom { |
sub write_chunk { |
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my ($self, $loaded_files) = @_; |
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#my $time_base = time(); |
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foreach my $addr ( sort keys %$loaded_files ) { |
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my $path = $loaded_files->{$addr}; |
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$self->load_image( $path, $addr ); |
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} |
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} |
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# write chunk directly into memory, updateing vram if needed |
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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 ) if $self->show_mem; |
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} |
} |
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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, $buff ); |
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return 1; |
return 1; |
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}; |
}; |
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=head2 save_dump |
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$emu->save_dump( 'filename', $from, $to ); |
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=cut |
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sub save_dump { |
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my $self = shift; |
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my ( $path, $from, $to ) = @_; |
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$from ||= 0; |
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$to ||= 0xffff; |
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open(my $fh, '>', $path) || die "can't open $path: $!"; |
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print $fh $self->read_chunk( $from, $to ); |
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close($fh); |
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my $size = -s $path; |
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warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
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} |
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=head2 hexdump |
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$emu->hexdump( $address ); |
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=cut |
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sub hexdump { |
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my $self = shift; |
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my $a = shift; |
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return sprintf(" %04x %s\n", $a, |
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join(" ", |
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map { |
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if ( defined($_) ) { |
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sprintf( "%02x", $_ ) |
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} else { |
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' ' |
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} |
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} @mem[ $a .. $a+8 ] |
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) |
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); |
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} |
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=head1 Memory management |
=head1 Memory management |
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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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my $byte = $mem[$addr]; |
return if ( $addr > 0xffff ); |
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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; |
return; |
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} |
} |
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=head1 Command Line |
=head2 render_vram |
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Command-line debugging intrerface is implemented for communication with |
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emulated device |
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=head2 prompt |
Render one frame of video ram |
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my ( $entered_line, @p ) = $emu->prompt( $address, $last_command ); |
$self->render_vram; |
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=cut |
=cut |
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my $last = 'r 1'; |
my @flip; |
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sub prompt { |
foreach my $i ( 0 .. 255 ) { |
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my $self = shift; |
my $t = 0; |
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$self->app->sync; |
$i & 0b00000001 and $t = $t | 0b10000000; |
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my $a = shift; |
$i & 0b00000010 and $t = $t | 0b01000000; |
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print $self->hexdump( $a ), |
$i & 0b00000100 and $t = $t | 0b00100000; |
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$last ? "[$last] " : '', |
$i & 0b00001000 and $t = $t | 0b00010000; |
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"> "; |
$i & 0b00010000 and $t = $t | 0b00001000; |
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my $in = <STDIN>; |
$i & 0b00100000 and $t = $t | 0b00000100; |
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chomp($in); |
$i & 0b01000000 and $t = $t | 0b00000010; |
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warn "## prompt got: $in\n" if $self->debug; |
$i & 0b10000000 and $t = $t | 0b00000001; |
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$in ||= $last; |
#warn "$i = $t\n"; |
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$last = $in; |
$flip[$i] = $t; |
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return ( $in, split(/\s+/, $in) ) if $in; |
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} |
} |
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=head2 cli |
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$emu->cli(); |
sub render_vram { |
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my $self = shift; |
430 |
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=cut |
my $pixels = pack("C*", map { $flip[$_] } @mem[ 0x6000 .. 0x7fff ]); |
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my $show_R = 0; |
my $vram = SDL::Surface->new( |
434 |
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-width => 256, |
435 |
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-height => 256, |
436 |
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-depth => 1, # 1 bit per pixel |
437 |
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-pitch => 32, # bytes per line |
438 |
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-from => $pixels, |
439 |
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); |
440 |
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$vram->set_colors( 0, $black, $white ); |
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sub cli { |
$self->render_frame( $vram ); |
443 |
my $self = shift; |
} |
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my $a = $PC || confess "no pc?"; |
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my $run_for = 0; |
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warn $self->dump_R() if $show_R; |
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while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
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my $c = shift @v; |
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next unless defined($c); |
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my $v = shift @v; |
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$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
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@v = map { hex($_) } @v; |
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printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
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if ( $c =~ m/^[qx]/i ) { |
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exit; |
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} elsif ( $c eq '?' ) { |
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my $t = $self->trace ? 'on' : 'off' ; |
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my $d = $self->debug ? 'on' : 'off' ; |
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warn <<__USAGE__; |
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Usage: |
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x|q\t\texit |
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e 6000 6010\tdump memory, +/- to walk forward/backward |
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m 1000 ff 00\tput ff 00 on 1000 |
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j|u 1000\t\tjump (change pc) |
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r 42\t\trun 42 instruction opcodes |
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t\t\ttrace [$t] |
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d\t\tdebug [$d] |
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__USAGE__ |
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warn $self->dump_R; |
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$last = ''; |
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} elsif ( $c =~ m/^e/i ) { |
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$a = $v if defined($v); |
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my $to = shift @v; |
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$to = $a + 32 if ( ! $to || $to <= $a ); |
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$to = 0xffff if ( $to > 0xffff ); |
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my $lines = int( ($to - $a + 8) / 8 ); |
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printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
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while ( --$lines ) { |
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print $self->hexdump( $a ); |
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$a += 8; |
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} |
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$last = '+'; |
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$show_R = 0; |
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} elsif ( $c =~ m/^\+/ ) { |
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$a += 8; |
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$show_R = 0; |
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} elsif ( $c =~ m/^\-/ ) { |
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$a -= 8; |
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$show_R = 0; |
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} elsif ( $c =~ m/^m/i ) { |
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$a = $v if defined($v); |
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$self->poke_code( $a, @v ); |
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printf "poke %d bytes at %04x\n", $#v + 1, $a; |
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$last = '+'; |
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$show_R = 0; |
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} elsif ( $c =~ m/^l/i ) { |
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my $to = shift @v || 0x1000; |
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$a = $to; |
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$self->load_image( $v, $a ); |
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$last = ''; |
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} elsif ( $c =~ m/^s/i ) { |
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$self->save_dump( $v || 'mem.dump', @v ); |
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$last = ''; |
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} elsif ( $c =~ m/^re/i ) { # reset |
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M6502::reset(); |
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$last = 'r 1'; |
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} elsif ( $c =~ m/^r/i ) { # run |
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$run_for = $v || 1; |
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print "run_for $run_for instructions\n"; |
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$show_R = 1; |
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last; |
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} elsif ( $c =~ m/^(u|j)/i ) { |
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my $to = $v || $a; |
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printf "set pc to %04x\n", $to; |
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$PC = $to; # remember for restart |
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$run_for = 1; |
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$last = "r $run_for"; |
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$show_R = 1; |
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last; |
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} elsif ( $c =~ m/^tape/ ) { |
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if ( $c =~ m/rate/ ) { |
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$self->tape_rate( $v ); |
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warn "will read table with rate $v\n"; |
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} elsif ( ! $v ) { |
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warn "ERROR: please specify tape name!\n"; |
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} elsif ( ! -e $v ) { |
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warn "ERROR: tape $v: $!\n"; |
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} else { |
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$self->load_tape( $v ); |
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} |
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$last = ''; |
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} elsif ( $c =~ m/^t/i ) { |
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$self->trace( not $self->trace ); |
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print "trace ", $self->trace ? 'on' : 'off', "\n"; |
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$last = ''; |
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} elsif ( $c =~ m/^d/i ) { |
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$self->debug( not $self->debug ); |
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print "debug ", $self->debug ? 'on' : 'off', "\n"; |
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$last = ''; |
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} else { |
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warn "# ignored $line\n" if ($line); |
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$last = ''; |
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} |
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} |
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444 |
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445 |
return $run_for; |
=head2 cpu_PC |
446 |
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447 |
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=cut |
448 |
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449 |
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sub cpu_PC { |
450 |
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my ( $self, $addr ) = @_; |
451 |
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if ( defined($addr) ) { |
452 |
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$PC = $addr; |
453 |
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warn sprintf("running from PC %04x\n", $PC); |
454 |
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}; |
455 |
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return $PC; |
456 |
} |
} |
457 |
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458 |
=head1 AUTHOR |
=head1 AUTHOR |