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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 M6502; |
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use base qw(Class::Accessor M6502 Screen Prefs); |
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__PACKAGE__->mk_accessors(qw(run_for)); |
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=head1 NAME |
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Orao - Orao emulator |
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=head1 VERSION |
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Version 0.02 |
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=cut |
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our $VERSION = '0.02'; |
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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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=head2 init |
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Start emulator, open L<Screen>, load initial ROM images, and render memory |
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=cut |
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our $orao; |
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select(STDERR); $| = 1; |
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sub init { |
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my $self = shift; |
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warn "Orao calling upstream init\n"; |
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$self->SUPER::init( $self, @_ ); |
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warn "Orao $Orao::VERSION emulation starting\n"; |
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$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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# $PC = 0xC274; # MC |
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$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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if(0){ |
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foreach my $i ( 0 .. $#mmap / 3 ) { |
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my $o = $i * 3; |
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my ( $from, $to, $desc ) = @mmap[$o,$o+1,$o+2]; |
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printf "%04x - %04x - %s\n", $from, $to, $desc; |
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for my $a ( $from .. $to ) { |
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if ( $a >= 0x6000 && $a < 0x8000 ) { |
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my $b = $self->read( $a ); |
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$self->vram( $a - 0x6000, $b ); |
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} else { |
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$self->read( $a ); |
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} |
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} |
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} |
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} |
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} else { |
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warn "rendering video memory\n"; |
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# for my $a ( 0x6000 .. 0x7fff ) { |
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# $self->vram( $a - 0x6000, $mem[$a] ); |
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# } |
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$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
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} |
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$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, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
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warn "Orao init finished", |
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$self->trace ? ' trace' : '', |
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$self->debug ? ' debug' : '', |
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"\n"; |
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} |
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=head2 load_rom |
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called to init memory and load initial rom images |
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$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_oraoemu( $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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} |
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=head2 load_oraoemu |
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Load binary files, ROM images and Orao Emulator files |
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$orao->load_oraoemu( '/path/to/file', 0x1000 ); |
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Returns true on success. |
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=cut |
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sub load_oraoemu { |
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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 .. $a+8 ] |
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) |
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); |
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} |
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=head1 Memory management |
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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=cut |
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=head2 read |
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Read from memory |
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$byte = read( $address ); |
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=cut |
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sub read { |
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my $self = shift; |
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my ($addr) = @_; |
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my $byte = $mem[$addr]; |
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warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
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$self->mmap_pixel( $addr, 0, $byte, 0 ); |
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return $byte; |
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} |
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=head2 write |
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Write into emory |
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write( $address, $byte ); |
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=cut |
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sub write { |
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my $self = shift; |
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my ($addr,$byte) = @_; |
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warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
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if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
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$self->vram( $addr - 0x6000 , $byte ); |
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} |
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if ( $addr == 0x8800 ) { |
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warn sprintf "sound ignored: %x\n", $byte; |
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} |
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if ( $addr > 0xafff ) { |
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warn sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
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return; |
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dpavlin |
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} |
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$self->mmap_pixel( $addr, $byte, 0, 0 ); |
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$mem[$addr] = $byte; |
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dpavlin |
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return; |
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} |
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=head1 Command Line |
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dpavlin |
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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 |
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my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
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dpavlin |
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=cut |
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my $last = 'r 1'; |
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sub prompt { |
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my $self = shift; |
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$self->app->sync; |
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my $a = shift; |
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print STDERR $self->hexdump( $a ), |
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$last ? "[$last] " : '', |
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"> "; |
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my $in = <STDIN>; |
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chomp($in); |
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warn "## prompt got: $in\n" if $self->debug; |
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$in ||= $last; |
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$last = $in; |
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dpavlin |
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return ( $in, split(/\s+/, $in) ) if $in; |
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dpavlin |
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} |
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dpavlin |
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=head2 cli |
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$orao->cli(); |
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=cut |
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dpavlin |
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my $show_R = 0; |
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dpavlin |
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sub cli { |
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my $self = shift; |
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my $a = $PC || confess "no pc?"; |
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dpavlin |
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warn $self->dump_R() if $show_R; |
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dpavlin |
61 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
368 |
dpavlin |
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my $c = shift @v; |
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dpavlin |
61 |
next unless defined($c); |
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dpavlin |
42 |
my $v = shift @v; |
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$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
372 |
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@v = map { hex($_) } @v; |
373 |
dpavlin |
49 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
374 |
dpavlin |
42 |
if ( $c =~ m/^[qx]/i ) { |
375 |
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exit; |
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} elsif ( $c eq '?' ) { |
377 |
dpavlin |
50 |
my $t = $self->trace ? 'on' : 'off' ; |
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my $d = $self->debug ? 'on' : 'off' ; |
379 |
dpavlin |
42 |
warn <<__USAGE__; |
380 |
dpavlin |
50 |
Usage: |
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|
382 |
dpavlin |
42 |
x|q\t\texit |
383 |
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e 6000 6010\tdump memory, +/- to walk forward/backward |
384 |
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m 1000 ff 00\tput ff 00 on 1000 |
385 |
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j|u 1000\t\tjump (change pc) |
386 |
|
|
r 42\t\trun 42 instruction opcodes |
387 |
dpavlin |
50 |
t\t\ttrace [$t] |
388 |
|
|
d\t\tdebug [$d] |
389 |
|
|
|
390 |
dpavlin |
42 |
__USAGE__ |
391 |
dpavlin |
68 |
warn $self->dump_R; |
392 |
dpavlin |
42 |
} elsif ( $c =~ m/^e/i ) { |
393 |
dpavlin |
49 |
$a = $v if defined($v); |
394 |
dpavlin |
42 |
my $to = shift @v; |
395 |
|
|
$to = $a + 32 if ( ! $to || $to <= $a ); |
396 |
dpavlin |
71 |
$to = 0xffff if ( $to > 0xffff ); |
397 |
dpavlin |
59 |
my $lines = int( ($to - $a + 8) / 8 ); |
398 |
|
|
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
399 |
|
|
while ( --$lines ) { |
400 |
dpavlin |
42 |
print $self->hexdump( $a ); |
401 |
|
|
$a += 8; |
402 |
|
|
} |
403 |
|
|
$last = '+'; |
404 |
dpavlin |
68 |
$show_R = 0; |
405 |
dpavlin |
42 |
} elsif ( $c =~ m/^\+/ ) { |
406 |
|
|
$a += 8; |
407 |
dpavlin |
68 |
$show_R = 0; |
408 |
dpavlin |
42 |
} elsif ( $c =~ m/^\-/ ) { |
409 |
|
|
$a -= 8; |
410 |
dpavlin |
68 |
$show_R = 0; |
411 |
dpavlin |
42 |
} elsif ( $c =~ m/^m/i ) { |
412 |
dpavlin |
70 |
$a = $v if defined($v); |
413 |
dpavlin |
42 |
$self->poke_code( $a, @v ); |
414 |
|
|
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
415 |
dpavlin |
50 |
$last = '+'; |
416 |
dpavlin |
68 |
$show_R = 0; |
417 |
dpavlin |
42 |
} elsif ( $c =~ m/^l/i ) { |
418 |
|
|
my $to = shift @v || 0x1000; |
419 |
|
|
$a = $to; |
420 |
|
|
$self->load_oraoemu( $v, $a ); |
421 |
dpavlin |
50 |
$last = ''; |
422 |
dpavlin |
42 |
} elsif ( $c =~ m/^s/i ) { |
423 |
|
|
$self->save_dump( $v || 'mem.dump', @v ); |
424 |
dpavlin |
50 |
$last = ''; |
425 |
dpavlin |
42 |
} elsif ( $c =~ m/^r/i ) { |
426 |
|
|
$run_for = $v || 1; |
427 |
|
|
print "run_for $run_for instructions\n"; |
428 |
dpavlin |
68 |
$show_R = 1; |
429 |
dpavlin |
42 |
last; |
430 |
|
|
} elsif ( $c =~ m/^(u|j)/ ) { |
431 |
|
|
my $to = $v || $a; |
432 |
|
|
printf "set pc to %04x\n", $to; |
433 |
|
|
$PC = $to; # remember for restart |
434 |
|
|
$run_for = 1; |
435 |
dpavlin |
62 |
$last = "r $run_for"; |
436 |
dpavlin |
68 |
$show_R = 1; |
437 |
dpavlin |
42 |
last; |
438 |
|
|
} elsif ( $c =~ m/^t/ ) { |
439 |
|
|
$self->trace( not $self->trace ); |
440 |
|
|
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
441 |
dpavlin |
64 |
$last = ''; |
442 |
dpavlin |
49 |
} elsif ( $c =~ m/^d/ ) { |
443 |
|
|
$self->debug( not $self->debug ); |
444 |
|
|
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
445 |
dpavlin |
64 |
$last = ''; |
446 |
dpavlin |
42 |
} else { |
447 |
dpavlin |
61 |
warn "# ignored $line\n" if ($line); |
448 |
|
|
$last = ''; |
449 |
dpavlin |
42 |
} |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
} |
453 |
|
|
|
454 |
dpavlin |
29 |
=head1 AUTHOR |
455 |
|
|
|
456 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
457 |
|
|
|
458 |
|
|
=head1 BUGS |
459 |
|
|
|
460 |
|
|
=head1 ACKNOWLEDGEMENTS |
461 |
|
|
|
462 |
|
|
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
463 |
|
|
info about this machine (and even hardware implementation from 2007). |
464 |
|
|
|
465 |
|
|
=head1 COPYRIGHT & LICENSE |
466 |
|
|
|
467 |
|
|
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
468 |
|
|
|
469 |
|
|
This program is free software; you can redistribute it and/or modify it |
470 |
|
|
under the same terms as Perl itself. |
471 |
|
|
|
472 |
|
|
=cut |
473 |
|
|
|
474 |
|
|
1; # End of Orao |