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dpavlin |
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package Orao; |
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use warnings; |
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use strict; |
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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; |
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use Data::Dump qw/dump/; |
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use List::Util qw/first/; |
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use M6502; |
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|
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use base qw(Class::Accessor M6502 Screen Prefs); |
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__PACKAGE__->mk_accessors(qw(booted)); |
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=head1 NAME |
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Orao - Orao emulator |
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=head1 VERSION |
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Version 0.04 |
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=cut |
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our $VERSION = '0.04'; |
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=head1 SUMMARY |
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Emulator or Orao 8-bit 6502 machine popular in Croatia |
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=cut |
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my @kbd_ports = ( |
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0x87FC,0x87FD,0x87FA,0x87FB,0x87F6,0x87F7, |
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0x87EE,0x87EF,0x87DE,0x87DF,0x87BE,0x87BF, |
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0x877E,0x877F,0x86FE,0x86FF,0x85FE,0x85FF, |
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0x83FE,0x83FF, |
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); |
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=head1 FUNCTIONS |
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=head2 boot |
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Start emulator, open L<Screen>, load initial ROM images, and render memory |
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my $orao = Orao->new({}); |
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$orao->boot; |
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=cut |
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our $orao; |
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select(STDERR); $| = 1; |
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sub boot { |
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my $self = shift; |
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warn "Orao calling upstream init\n"; |
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$self->SUPER::init( |
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read => sub { $self->read( @_ ) }, |
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write => sub { $self->write( @_ ) }, |
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); |
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warn "Orao $Orao::VERSION emulation starting\n"; |
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warn "emulating ", $#mem, " bytes of memory\n"; |
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$self->open_screen; |
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$self->load_rom({ |
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0x1000 => 'dump/SCRINV.BIN', |
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# should be 0x6000, but oraoemu has 2 byte prefix |
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0x5FFE => 'dump/screen.dmp', |
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0xC000 => 'rom/BAS12.ROM', |
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0xE000 => 'rom/CRT12.ROM', |
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}); |
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# $PC = 0xDD11; # BC |
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# $PC = 0xC274; # MC |
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$PC = 0xff89; |
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$orao = $self; |
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# $self->prompt( 0x1000 ); |
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my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
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$self->trace( 0 ); |
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$self->debug( 0 ); |
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$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
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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 = ( |
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0x0000, 0x03FF, 'nulti blok', |
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0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
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0x6000, 0x7FFF, 'video RAM', |
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0x8000, 0x9FFF, 'sistemske lokacije', |
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0xA000, 0xAFFF, 'ekstenzija', |
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0xB000, 0xBFFF, 'DOS', |
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0xC000, 0xDFFF, 'BASIC ROM', |
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0xE000, 0xFFFF, 'sistemski ROM', |
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); |
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} else { |
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warn "rendering video memory\n"; |
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$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
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} |
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$self->sync; |
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$self->trace( $trace ); |
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$self->debug( $debug ); |
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#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
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|
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warn "Orao boot finished", |
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$self->trace ? ' trace' : '', |
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$self->debug ? ' debug' : '', |
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"\n"; |
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M6502::reset(); |
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$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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$orao->run; |
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=cut |
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sub run { |
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my $self = shift; |
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$self->show_mem( 1 ); |
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$self->boot if ( ! $self->booted ); |
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$self->loop; |
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}; |
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=head1 Helper functions |
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=head2 load_rom |
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called to init memory and load initial rom images |
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$orao->load_rom; |
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=cut |
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sub load_rom { |
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my ($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; |
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my ( $addr, $chunk ) = @_; |
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$self->write_chunk( $addr, $chunk ); |
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my $end = $addr + length($chunk); |
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my ( $f, $t ) = ( 0x6000, 0x7fff ); |
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if ( $end < $f || $addr >= $t ) { |
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warn "skip vram update\n"; |
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return; |
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}; |
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$f = $addr if ( $addr > $f ); |
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$t = $end if ( $end < $t ); |
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warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
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# foreach my $a ( $f .. $t ) { |
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# $self->vram( $a - 0x6000 , $mem[ $a ] ); |
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# } |
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$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
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$self->render_mem( @mem ) if $self->show_mem; |
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} |
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=head2 load_image |
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Load binary files, ROM images and Orao Emulator files |
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$orao->load_image( '/path/to/file', 0x1000 ); |
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Returns true on success. |
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=cut |
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sub load_image { |
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my $self = shift; |
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my ( $path, $addr ) = @_; |
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if ( ! -e $path ) { |
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warn "ERROR: file $path doesn't exist\n"; |
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return; |
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} |
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my $size = -s $path || confess "no size for $path: $!"; |
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my $buff = read_file( $path ); |
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if ( $size == 65538 ) { |
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$addr = 0; |
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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) ); |
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return 1; |
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} elsif ( $size == 32800 ) { |
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$addr = 0; |
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warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, substr($buff,0x20) ); |
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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, $chunk ); |
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return 1; |
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}; |
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=head2 save_dump |
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$orao->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, $size; |
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} |
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=head2 hexdump |
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$orao->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 .. $a+8 ] |
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) |
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); |
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} |
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=head1 Memory management |
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|
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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=cut |
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=head2 read |
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Read from memory |
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$byte = read( $address ); |
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=cut |
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dpavlin |
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my $keyboard = { |
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0x87FC => { |
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'right' => 16, |
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'down' => 128, |
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'up' => 192, |
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'left' => 224, |
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'backspace' => 224, |
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}, |
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0x87FD => { |
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'return' => sub { |
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M6502::write( 0xfc, 13 ); |
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return 0; |
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}, |
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'left ctrl' => 16, |
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'right ctrl' => 16, |
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}, |
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0x87FA => { |
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'f4' => 16, |
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'f3' => 128, |
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'f2' => 192, |
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'f1' => 224, |
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}, |
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0x87FB => { |
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'space' => 32, |
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'left shift' => 16, |
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'right shift' => 16, |
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}, |
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0x87F6 => { |
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'6' => 16, |
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't' => 128, |
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'z' => 192, |
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'r' => 224, |
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}, |
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0x87F7 => { |
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'5' => 32, |
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'4' => 16, |
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}, |
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0x87EE => { |
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'7' => 16, |
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'u' => 128, |
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'i' => 192, |
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'o' => 224, |
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}, |
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0x87EF => { |
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'8' => 32, |
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'9' => 16, |
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}, |
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0x87DE => { |
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'1' => 16, |
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'w' => 128, |
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'q' => 192, |
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'e' => 224, |
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}, |
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0x87DF => { |
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'2' => 32, |
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'3' => 16, |
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}, |
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0x87BE => { |
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'm' => 16, |
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'k' => 128, |
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'j' => 192, |
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'l' => 224, |
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}, |
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0x87BF => { |
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',' => 32, |
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'.' => 16, |
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}, |
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0x877E => { |
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'y' => 16, |
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's' => 128, |
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'a' => 192, |
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'd' => 224, |
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}, |
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0x877F => { |
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'x' => 32, |
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'c' => 16, |
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}, |
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0x86FE => { |
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'n' => 16, |
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'g' => 128, |
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'h' => 192, |
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'f' => 224, |
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}, |
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0x86FF => { |
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'b' => 32, |
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'c' => 16, |
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}, |
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0x85FE => { |
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':' => 16, |
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'\\' => 128, |
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'\'' => 192, |
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';' => 224, |
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'8' => 16, # FIXME? |
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}, |
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|
|
0x85FF => { |
405 |
|
|
'/' => 32, |
406 |
|
|
'6' => 16, # FIXME? |
407 |
|
|
}, |
408 |
|
|
0x83FE => { |
409 |
|
|
';' => 16, |
410 |
|
|
'[' => 128, |
411 |
|
|
']' => 192, |
412 |
|
|
'p' => 224, |
413 |
|
|
'=' => 16, # FIXME? |
414 |
|
|
}, |
415 |
|
|
0x83FF => { |
416 |
|
|
'-' => 32, |
417 |
|
|
'0' => 16, |
418 |
|
|
}, |
419 |
|
|
}; |
420 |
|
|
|
421 |
|
|
|
422 |
dpavlin |
32 |
sub read { |
423 |
dpavlin |
33 |
my $self = shift; |
424 |
dpavlin |
32 |
my ($addr) = @_; |
425 |
|
|
my $byte = $mem[$addr]; |
426 |
dpavlin |
90 |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
427 |
dpavlin |
41 |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
428 |
dpavlin |
78 |
|
429 |
|
|
# keyboard |
430 |
|
|
|
431 |
|
|
if ( first { $addr == $_ } @kbd_ports ) { |
432 |
dpavlin |
97 |
warn sprintf("keyboard port: %04x\n",$addr) if $self->trace; |
433 |
dpavlin |
98 |
if ( my $key = $self->key_pressed ) { |
434 |
|
|
my $r = $keyboard->{$addr} || confess "no definition for keyboard port found"; |
435 |
|
|
if ( my $ret = $r->{$key} ) { |
436 |
|
|
if ( ref($ret) eq 'CODE' ) { |
437 |
|
|
$ret = $ret->(); |
438 |
|
|
warn "executed $key and got: $ret\n"; |
439 |
|
|
} else { |
440 |
|
|
warn sprintf("keyboard port: %04x key: '%s' code: %02x\n", $addr, $key, $ret); |
441 |
|
|
} |
442 |
|
|
$mem[$addr] = $ret; |
443 |
|
|
return $ret; |
444 |
|
|
} else { |
445 |
|
|
warn sprintf("keyboard port: %04x unknown key: '%s'\n", $addr, $key); |
446 |
|
|
} |
447 |
|
|
warn sprintf("keyboard port: %04x %s\n",$addr,dump( $r )) if $self->trace; |
448 |
|
|
} |
449 |
dpavlin |
78 |
} |
450 |
|
|
|
451 |
dpavlin |
33 |
$self->mmap_pixel( $addr, 0, $byte, 0 ); |
452 |
dpavlin |
32 |
return $byte; |
453 |
|
|
} |
454 |
|
|
|
455 |
|
|
=head2 write |
456 |
|
|
|
457 |
|
|
Write into emory |
458 |
|
|
|
459 |
|
|
write( $address, $byte ); |
460 |
|
|
|
461 |
|
|
=cut |
462 |
|
|
|
463 |
|
|
sub write { |
464 |
dpavlin |
33 |
my $self = shift; |
465 |
dpavlin |
32 |
my ($addr,$byte) = @_; |
466 |
dpavlin |
41 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
467 |
dpavlin |
32 |
|
468 |
|
|
if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
469 |
|
|
$self->vram( $addr - 0x6000 , $byte ); |
470 |
|
|
} |
471 |
|
|
|
472 |
|
|
if ( $addr == 0x8800 ) { |
473 |
|
|
warn sprintf "sound ignored: %x\n", $byte; |
474 |
|
|
} |
475 |
|
|
|
476 |
dpavlin |
52 |
if ( $addr > 0xafff ) { |
477 |
dpavlin |
90 |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
478 |
dpavlin |
52 |
} |
479 |
|
|
|
480 |
dpavlin |
33 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
481 |
dpavlin |
32 |
|
482 |
|
|
$mem[$addr] = $byte; |
483 |
dpavlin |
36 |
return; |
484 |
dpavlin |
32 |
} |
485 |
|
|
|
486 |
dpavlin |
42 |
=head1 Command Line |
487 |
dpavlin |
32 |
|
488 |
dpavlin |
42 |
Command-line debugging intrerface is implemented for communication with |
489 |
|
|
emulated device |
490 |
|
|
|
491 |
dpavlin |
50 |
=head2 prompt |
492 |
|
|
|
493 |
dpavlin |
61 |
my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
494 |
dpavlin |
50 |
|
495 |
|
|
=cut |
496 |
|
|
|
497 |
|
|
my $last = 'r 1'; |
498 |
|
|
|
499 |
|
|
sub prompt { |
500 |
|
|
my $self = shift; |
501 |
|
|
$self->app->sync; |
502 |
|
|
my $a = shift; |
503 |
dpavlin |
97 |
print $self->hexdump( $a ), |
504 |
dpavlin |
50 |
$last ? "[$last] " : '', |
505 |
|
|
"> "; |
506 |
|
|
my $in = <STDIN>; |
507 |
|
|
chomp($in); |
508 |
|
|
warn "## prompt got: $in\n" if $self->debug; |
509 |
|
|
$in ||= $last; |
510 |
|
|
$last = $in; |
511 |
dpavlin |
61 |
return ( $in, split(/\s+/, $in) ) if $in; |
512 |
dpavlin |
50 |
} |
513 |
|
|
|
514 |
dpavlin |
42 |
=head2 cli |
515 |
|
|
|
516 |
|
|
$orao->cli(); |
517 |
|
|
|
518 |
|
|
=cut |
519 |
|
|
|
520 |
dpavlin |
68 |
my $show_R = 0; |
521 |
|
|
|
522 |
dpavlin |
42 |
sub cli { |
523 |
|
|
my $self = shift; |
524 |
|
|
my $a = $PC || confess "no pc?"; |
525 |
dpavlin |
96 |
my $run_for = 0; |
526 |
dpavlin |
68 |
warn $self->dump_R() if $show_R; |
527 |
dpavlin |
61 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
528 |
dpavlin |
42 |
my $c = shift @v; |
529 |
dpavlin |
61 |
next unless defined($c); |
530 |
dpavlin |
42 |
my $v = shift @v; |
531 |
|
|
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
532 |
|
|
@v = map { hex($_) } @v; |
533 |
dpavlin |
49 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
534 |
dpavlin |
42 |
if ( $c =~ m/^[qx]/i ) { |
535 |
|
|
exit; |
536 |
|
|
} elsif ( $c eq '?' ) { |
537 |
dpavlin |
50 |
my $t = $self->trace ? 'on' : 'off' ; |
538 |
|
|
my $d = $self->debug ? 'on' : 'off' ; |
539 |
dpavlin |
42 |
warn <<__USAGE__; |
540 |
dpavlin |
50 |
Usage: |
541 |
|
|
|
542 |
dpavlin |
42 |
x|q\t\texit |
543 |
|
|
e 6000 6010\tdump memory, +/- to walk forward/backward |
544 |
|
|
m 1000 ff 00\tput ff 00 on 1000 |
545 |
|
|
j|u 1000\t\tjump (change pc) |
546 |
|
|
r 42\t\trun 42 instruction opcodes |
547 |
dpavlin |
50 |
t\t\ttrace [$t] |
548 |
|
|
d\t\tdebug [$d] |
549 |
|
|
|
550 |
dpavlin |
42 |
__USAGE__ |
551 |
dpavlin |
68 |
warn $self->dump_R; |
552 |
dpavlin |
97 |
$last = ''; |
553 |
dpavlin |
42 |
} elsif ( $c =~ m/^e/i ) { |
554 |
dpavlin |
49 |
$a = $v if defined($v); |
555 |
dpavlin |
42 |
my $to = shift @v; |
556 |
|
|
$to = $a + 32 if ( ! $to || $to <= $a ); |
557 |
dpavlin |
71 |
$to = 0xffff if ( $to > 0xffff ); |
558 |
dpavlin |
59 |
my $lines = int( ($to - $a + 8) / 8 ); |
559 |
|
|
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
560 |
|
|
while ( --$lines ) { |
561 |
dpavlin |
42 |
print $self->hexdump( $a ); |
562 |
|
|
$a += 8; |
563 |
|
|
} |
564 |
|
|
$last = '+'; |
565 |
dpavlin |
68 |
$show_R = 0; |
566 |
dpavlin |
42 |
} elsif ( $c =~ m/^\+/ ) { |
567 |
|
|
$a += 8; |
568 |
dpavlin |
68 |
$show_R = 0; |
569 |
dpavlin |
42 |
} elsif ( $c =~ m/^\-/ ) { |
570 |
|
|
$a -= 8; |
571 |
dpavlin |
68 |
$show_R = 0; |
572 |
dpavlin |
42 |
} elsif ( $c =~ m/^m/i ) { |
573 |
dpavlin |
70 |
$a = $v if defined($v); |
574 |
dpavlin |
42 |
$self->poke_code( $a, @v ); |
575 |
|
|
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
576 |
dpavlin |
50 |
$last = '+'; |
577 |
dpavlin |
68 |
$show_R = 0; |
578 |
dpavlin |
42 |
} elsif ( $c =~ m/^l/i ) { |
579 |
|
|
my $to = shift @v || 0x1000; |
580 |
|
|
$a = $to; |
581 |
dpavlin |
94 |
$self->load_image( $v, $a ); |
582 |
dpavlin |
50 |
$last = ''; |
583 |
dpavlin |
42 |
} elsif ( $c =~ m/^s/i ) { |
584 |
|
|
$self->save_dump( $v || 'mem.dump', @v ); |
585 |
dpavlin |
50 |
$last = ''; |
586 |
dpavlin |
42 |
} elsif ( $c =~ m/^r/i ) { |
587 |
|
|
$run_for = $v || 1; |
588 |
|
|
print "run_for $run_for instructions\n"; |
589 |
dpavlin |
68 |
$show_R = 1; |
590 |
dpavlin |
42 |
last; |
591 |
|
|
} elsif ( $c =~ m/^(u|j)/ ) { |
592 |
|
|
my $to = $v || $a; |
593 |
|
|
printf "set pc to %04x\n", $to; |
594 |
|
|
$PC = $to; # remember for restart |
595 |
|
|
$run_for = 1; |
596 |
dpavlin |
62 |
$last = "r $run_for"; |
597 |
dpavlin |
68 |
$show_R = 1; |
598 |
dpavlin |
42 |
last; |
599 |
|
|
} elsif ( $c =~ m/^t/ ) { |
600 |
|
|
$self->trace( not $self->trace ); |
601 |
|
|
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
602 |
dpavlin |
64 |
$last = ''; |
603 |
dpavlin |
49 |
} elsif ( $c =~ m/^d/ ) { |
604 |
|
|
$self->debug( not $self->debug ); |
605 |
|
|
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
606 |
dpavlin |
64 |
$last = ''; |
607 |
dpavlin |
42 |
} else { |
608 |
dpavlin |
61 |
warn "# ignored $line\n" if ($line); |
609 |
|
|
$last = ''; |
610 |
dpavlin |
42 |
} |
611 |
|
|
} |
612 |
|
|
|
613 |
dpavlin |
96 |
return $run_for; |
614 |
dpavlin |
42 |
} |
615 |
|
|
|
616 |
dpavlin |
29 |
=head1 AUTHOR |
617 |
|
|
|
618 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
619 |
|
|
|
620 |
|
|
=head1 BUGS |
621 |
|
|
|
622 |
|
|
=head1 ACKNOWLEDGEMENTS |
623 |
|
|
|
624 |
|
|
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
625 |
|
|
info about this machine (and even hardware implementation from 2007). |
626 |
|
|
|
627 |
|
|
=head1 COPYRIGHT & LICENSE |
628 |
|
|
|
629 |
|
|
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
630 |
|
|
|
631 |
|
|
This program is free software; you can redistribute it and/or modify it |
632 |
|
|
under the same terms as Perl itself. |
633 |
|
|
|
634 |
|
|
=cut |
635 |
|
|
|
636 |
|
|
1; # End of Orao |