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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(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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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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=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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# $PC = 0xC274; # MC |
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$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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$self->debug( 0 ); |
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|
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$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, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
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warn "Orao init finished", |
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$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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dpavlin |
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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 $self->show_mem; |
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} |
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=head2 load_oraoemu |
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Load binary files, ROM images and Orao Emulator files |
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$orao->load_oraoemu( '/path/to/file', 0x1000 ); |
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Returns true on success. |
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=cut |
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dpavlin |
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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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dpavlin |
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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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dpavlin |
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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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dpavlin |
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} @mem[ $a .. $a+8 ] |
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) |
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); |
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} |
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=head1 Memory management |
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dpavlin |
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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=cut |
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=head2 read |
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Read from memory |
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$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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dpavlin |
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# keyboard |
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if ( first { $addr == $_ } @kbd_ports ) { |
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warn sprintf("keyboard port: %04x\n",$addr); |
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} elsif ( $addr == 0x87fc ) { |
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warn "0x87fc - arrows/back\n"; |
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=for pascal |
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if VKey=VK_RIGHT then Result:=16; |
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if VKey=VK_DOWN then Result:=128; |
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if VKey=VK_UP then Result:=192; |
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if VKey=VK_LEFT then Result:=224; |
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if Ord(KeyPressed)=VK_BACK then Result:=224; |
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=cut |
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} elsif ( $addr == 0x87fd ) { |
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warn "0x87fd - enter\n"; |
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=for pascal |
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if KeyPressed=Chr(13) then begin |
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Mem[$FC]:=13; |
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Result:=0; |
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end; |
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=cut |
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} elsif ( $addr == 0x87fa ) { |
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warn "0x87fa = F1 - F4\n"; |
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=for pascal |
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if VKey=VK_F4 then Result:=16; |
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if VKey=VK_F3 then Result:=128; |
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if VKey=VK_F2 then Result:=192; |
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if VKey=VK_F1 then Result:=224; |
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=cut |
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} elsif ( $addr == 0x87fb ) { |
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warn "0x87fb\n"; |
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=for pascal |
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if KeyPressed=Chr(32) then Result:=32; |
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if KeyPressed='"' then Result:=16; |
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if KeyPressed='!' then Result:=16; |
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if KeyPressed='$' then Result:=16; |
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if KeyPressed='%' then Result:=16; |
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if KeyPressed='&' then Result:=16; |
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if KeyPressed='(' then Result:=16; |
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if KeyPressed=')' then Result:=16; |
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if KeyPressed='=' then Result:=16; |
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if KeyPressed='#' then Result:=16; |
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if KeyPressed='+' then Result:=16; |
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if KeyPressed='*' then Result:=16; |
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if KeyPressed='?' then Result:=16; |
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if KeyPressed='<' then Result:=16; |
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if KeyPressed='>' then Result:=16; |
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if VKey=191 then Result:=16; |
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=cut |
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} |
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dpavlin |
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$self->mmap_pixel( $addr, 0, $byte, 0 ); |
336 |
dpavlin |
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return $byte; |
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} |
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=head2 write |
340 |
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Write into emory |
342 |
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write( $address, $byte ); |
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=cut |
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sub write { |
348 |
dpavlin |
33 |
my $self = shift; |
349 |
dpavlin |
32 |
my ($addr,$byte) = @_; |
350 |
dpavlin |
41 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
351 |
dpavlin |
32 |
|
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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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} |
359 |
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360 |
dpavlin |
52 |
if ( $addr > 0xafff ) { |
361 |
dpavlin |
65 |
warn sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
362 |
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return; |
363 |
dpavlin |
52 |
} |
364 |
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365 |
dpavlin |
33 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
366 |
dpavlin |
32 |
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367 |
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$mem[$addr] = $byte; |
368 |
dpavlin |
36 |
return; |
369 |
dpavlin |
32 |
} |
370 |
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|
371 |
dpavlin |
42 |
=head1 Command Line |
372 |
dpavlin |
32 |
|
373 |
dpavlin |
42 |
Command-line debugging intrerface is implemented for communication with |
374 |
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emulated device |
375 |
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376 |
dpavlin |
50 |
=head2 prompt |
377 |
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378 |
dpavlin |
61 |
my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
379 |
dpavlin |
50 |
|
380 |
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=cut |
381 |
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my $last = 'r 1'; |
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sub prompt { |
385 |
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my $self = shift; |
386 |
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$self->app->sync; |
387 |
|
|
my $a = shift; |
388 |
|
|
print STDERR $self->hexdump( $a ), |
389 |
|
|
$last ? "[$last] " : '', |
390 |
|
|
"> "; |
391 |
|
|
my $in = <STDIN>; |
392 |
|
|
chomp($in); |
393 |
|
|
warn "## prompt got: $in\n" if $self->debug; |
394 |
|
|
$in ||= $last; |
395 |
|
|
$last = $in; |
396 |
dpavlin |
61 |
return ( $in, split(/\s+/, $in) ) if $in; |
397 |
dpavlin |
50 |
} |
398 |
|
|
|
399 |
dpavlin |
42 |
=head2 cli |
400 |
|
|
|
401 |
|
|
$orao->cli(); |
402 |
|
|
|
403 |
|
|
=cut |
404 |
|
|
|
405 |
dpavlin |
68 |
my $show_R = 0; |
406 |
|
|
|
407 |
dpavlin |
42 |
sub cli { |
408 |
|
|
my $self = shift; |
409 |
|
|
my $a = $PC || confess "no pc?"; |
410 |
dpavlin |
68 |
warn $self->dump_R() if $show_R; |
411 |
dpavlin |
61 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
412 |
dpavlin |
42 |
my $c = shift @v; |
413 |
dpavlin |
61 |
next unless defined($c); |
414 |
dpavlin |
42 |
my $v = shift @v; |
415 |
|
|
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
416 |
|
|
@v = map { hex($_) } @v; |
417 |
dpavlin |
49 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
418 |
dpavlin |
42 |
if ( $c =~ m/^[qx]/i ) { |
419 |
|
|
exit; |
420 |
|
|
} elsif ( $c eq '?' ) { |
421 |
dpavlin |
50 |
my $t = $self->trace ? 'on' : 'off' ; |
422 |
|
|
my $d = $self->debug ? 'on' : 'off' ; |
423 |
dpavlin |
42 |
warn <<__USAGE__; |
424 |
dpavlin |
50 |
Usage: |
425 |
|
|
|
426 |
dpavlin |
42 |
x|q\t\texit |
427 |
|
|
e 6000 6010\tdump memory, +/- to walk forward/backward |
428 |
|
|
m 1000 ff 00\tput ff 00 on 1000 |
429 |
|
|
j|u 1000\t\tjump (change pc) |
430 |
|
|
r 42\t\trun 42 instruction opcodes |
431 |
dpavlin |
50 |
t\t\ttrace [$t] |
432 |
|
|
d\t\tdebug [$d] |
433 |
|
|
|
434 |
dpavlin |
42 |
__USAGE__ |
435 |
dpavlin |
68 |
warn $self->dump_R; |
436 |
dpavlin |
42 |
} elsif ( $c =~ m/^e/i ) { |
437 |
dpavlin |
49 |
$a = $v if defined($v); |
438 |
dpavlin |
42 |
my $to = shift @v; |
439 |
|
|
$to = $a + 32 if ( ! $to || $to <= $a ); |
440 |
dpavlin |
71 |
$to = 0xffff if ( $to > 0xffff ); |
441 |
dpavlin |
59 |
my $lines = int( ($to - $a + 8) / 8 ); |
442 |
|
|
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
443 |
|
|
while ( --$lines ) { |
444 |
dpavlin |
42 |
print $self->hexdump( $a ); |
445 |
|
|
$a += 8; |
446 |
|
|
} |
447 |
|
|
$last = '+'; |
448 |
dpavlin |
68 |
$show_R = 0; |
449 |
dpavlin |
42 |
} elsif ( $c =~ m/^\+/ ) { |
450 |
|
|
$a += 8; |
451 |
dpavlin |
68 |
$show_R = 0; |
452 |
dpavlin |
42 |
} elsif ( $c =~ m/^\-/ ) { |
453 |
|
|
$a -= 8; |
454 |
dpavlin |
68 |
$show_R = 0; |
455 |
dpavlin |
42 |
} elsif ( $c =~ m/^m/i ) { |
456 |
dpavlin |
70 |
$a = $v if defined($v); |
457 |
dpavlin |
42 |
$self->poke_code( $a, @v ); |
458 |
|
|
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
459 |
dpavlin |
50 |
$last = '+'; |
460 |
dpavlin |
68 |
$show_R = 0; |
461 |
dpavlin |
42 |
} elsif ( $c =~ m/^l/i ) { |
462 |
|
|
my $to = shift @v || 0x1000; |
463 |
|
|
$a = $to; |
464 |
|
|
$self->load_oraoemu( $v, $a ); |
465 |
dpavlin |
50 |
$last = ''; |
466 |
dpavlin |
42 |
} elsif ( $c =~ m/^s/i ) { |
467 |
|
|
$self->save_dump( $v || 'mem.dump', @v ); |
468 |
dpavlin |
50 |
$last = ''; |
469 |
dpavlin |
42 |
} elsif ( $c =~ m/^r/i ) { |
470 |
|
|
$run_for = $v || 1; |
471 |
|
|
print "run_for $run_for instructions\n"; |
472 |
dpavlin |
68 |
$show_R = 1; |
473 |
dpavlin |
42 |
last; |
474 |
|
|
} elsif ( $c =~ m/^(u|j)/ ) { |
475 |
|
|
my $to = $v || $a; |
476 |
|
|
printf "set pc to %04x\n", $to; |
477 |
|
|
$PC = $to; # remember for restart |
478 |
|
|
$run_for = 1; |
479 |
dpavlin |
62 |
$last = "r $run_for"; |
480 |
dpavlin |
68 |
$show_R = 1; |
481 |
dpavlin |
42 |
last; |
482 |
|
|
} elsif ( $c =~ m/^t/ ) { |
483 |
|
|
$self->trace( not $self->trace ); |
484 |
|
|
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
485 |
dpavlin |
64 |
$last = ''; |
486 |
dpavlin |
49 |
} elsif ( $c =~ m/^d/ ) { |
487 |
|
|
$self->debug( not $self->debug ); |
488 |
|
|
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
489 |
dpavlin |
64 |
$last = ''; |
490 |
dpavlin |
42 |
} else { |
491 |
dpavlin |
61 |
warn "# ignored $line\n" if ($line); |
492 |
|
|
$last = ''; |
493 |
dpavlin |
42 |
} |
494 |
|
|
} |
495 |
|
|
|
496 |
|
|
} |
497 |
|
|
|
498 |
dpavlin |
29 |
=head1 AUTHOR |
499 |
|
|
|
500 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
501 |
|
|
|
502 |
|
|
=head1 BUGS |
503 |
|
|
|
504 |
|
|
=head1 ACKNOWLEDGEMENTS |
505 |
|
|
|
506 |
|
|
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
507 |
|
|
info about this machine (and even hardware implementation from 2007). |
508 |
|
|
|
509 |
|
|
=head1 COPYRIGHT & LICENSE |
510 |
|
|
|
511 |
|
|
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
512 |
|
|
|
513 |
|
|
This program is free software; you can redistribute it and/or modify it |
514 |
|
|
under the same terms as Perl itself. |
515 |
|
|
|
516 |
|
|
=cut |
517 |
|
|
|
518 |
|
|
1; # End of Orao |