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package Orao; |
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|
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use warnings; |
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use strict; |
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|
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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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|
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use base qw(Class::Accessor VRac M6502 Screen Prefs Tape); |
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#__PACKAGE__->mk_accessors(qw()); |
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|
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=head1 NAME |
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|
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Orao - Orao emulator |
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|
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=head1 VERSION |
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|
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Version 0.04 |
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|
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=cut |
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|
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our $VERSION = '0.04'; |
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|
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=head1 SUMMARY |
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|
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Emulator or Orao 8-bit 6502 machine popular in Croatia |
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|
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=cut |
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|
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=head1 FUNCTIONS |
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|
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=head2 boot |
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|
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Start emulator, open L<Screen>, load initial ROM images, and render memory |
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|
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my $emu = Orao->new({}); |
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$emu->boot; |
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|
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=cut |
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|
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our $emu; |
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|
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select(STDERR); $| = 1; |
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|
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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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|
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warn "Orao $Orao::VERSION emulation starting\n"; |
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|
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warn "emulating ", $#mem, " bytes of memory\n"; |
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|
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$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/Orao/BAS12.ROM', |
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# 0xE000 => 'rom/Orao/CRT12.ROM', |
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0xC000 => 'rom/Orao/BAS13.ROM', |
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0xE000 => 'rom/Orao/CRT13.ROM', |
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}); |
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|
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# $PC = 0xDD11; # BC |
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# $PC = 0xC274; # MC |
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|
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$PC = 0xff89; |
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|
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$emu = $self; |
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|
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# $self->prompt( 0x1000 ); |
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|
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my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
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$self->trace( 0 ); |
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$self->debug( 0 ); |
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|
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warn "rendering video memory\n"; |
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$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
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|
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if ( $self->show_mem ) { |
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|
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warn "rendering memory map\n"; |
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|
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$self->render_mem( @mem ); |
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|
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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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|
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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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|
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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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$self->debug ? ' debug' : '', |
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"\n"; |
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|
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M6502::reset(); |
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|
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$self->booted( 1 ); |
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} |
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|
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=head2 run |
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|
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Run interactive emulation loop |
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|
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$emu->run; |
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|
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=cut |
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|
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sub run { |
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my $self = shift; |
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|
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$self->boot if ( ! $self->booted ); |
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|
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# $self->load_tape( '../oraoigre/bdash.tap' ); |
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|
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$self->loop; |
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}; |
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|
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=head1 Helper functions |
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|
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=cut |
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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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|
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if ( $end < $f || $addr >= $t ) { |
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warn "skip vram update\n"; |
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return; |
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}; |
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|
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$f = $addr if ( $addr > $f ); |
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$t = $end if ( $end < $t ); |
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|
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warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
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$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
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$self->render_mem( @mem ) if $self->show_mem; |
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} |
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|
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=head2 load_image |
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|
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Load binary files, ROM images and Orao Emulator files |
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|
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$emu->load_image( '/path/to/file', 0x1000 ); |
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|
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Returns true on success. |
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|
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=cut |
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|
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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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|
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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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|
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my $size = -s $path || confess "no size for $path: $!"; |
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|
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my $buff = read_file( $path ); |
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|
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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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|
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my $chunk; |
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|
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my $pos = 0; |
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|
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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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|
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$self->_write_chunk( $addr, $chunk ); |
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|
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return 1; |
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}; |
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|
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|
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=head1 Memory management |
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|
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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|
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=cut |
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|
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=head2 read |
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|
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Read from memory |
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|
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$byte = read( $address ); |
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|
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=cut |
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|
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my $keyboard_none = 255; |
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|
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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 => sub { |
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my ( $self, $key ) = @_; |
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if ( $key eq 'return' ) { |
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M6502::_write( 0xfc, 13 ); |
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warn "return\n"; |
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return 0; |
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} elsif ( $key =~ m/ ctrl/ || $self->key_down( 'left ctrl' ) || $self->key_down( 'right ctrl' ) ) { |
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warn "ctrl\n"; |
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return 16; |
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} |
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return $keyboard_none; |
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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 => sub { |
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my ( $self, $key ) = @_; |
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if ( $key eq 'space' ) { |
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return 32; |
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} elsif ( $self->key_down( 'left shift' ) || $self->key_down( 'right shift' ) ) { |
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warn "shift\n"; |
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return 16; |
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# } elsif ( $self->tape ) { |
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# warn "has tape!"; |
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# return 0; |
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} |
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return $keyboard_none; |
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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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'y' => 192, # hr: z |
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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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'z' => 16, # hr:y |
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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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'v' => 16, |
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}, |
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0x85FE => { |
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'<' => 16, # : |
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'\\' => 128, # ¾ |
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'\'' => 192, # æ |
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';' => 224, # è |
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}, |
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0x85FF => { |
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'/' => 32, |
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'f11' => 16, # ^ |
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}, |
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0x83FE => { |
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'f12' => 16, # ; |
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'[' => 128, # ¹ |
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']' => 192, # ð |
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'p' => 224, |
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}, |
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0x83FF => { |
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'-' => 32, |
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'0' => 16, |
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}, |
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}; |
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|
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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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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; |
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|
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# keyboard |
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|
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if ( defined( $keyboard->{$addr} ) ) { |
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warn sprintf("keyboard port: %04x\n",$addr) if $self->trace; |
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my $key = $self->key_pressed; |
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if ( defined($key) ) { |
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my $ret = $keyboard_none; |
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my $r = $keyboard->{$addr} || confess "no definition for keyboard port found"; |
| 376 |
if ( ref($r) eq 'CODE' ) { |
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$ret = $r->($self, $key); |
| 378 |
} elsif ( defined($r->{$key}) ) { |
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$ret = $r->{$key}; |
| 380 |
if ( ref($ret) eq 'CODE' ) { |
| 381 |
$ret = $ret->($self); |
| 382 |
} |
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} else { |
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warn sprintf("keyboard port: %04x unknown key: '%s'\n", $addr, $key) if $debug; |
| 385 |
} |
| 386 |
warn sprintf("keyboard port: %04x key:%s code:%d\n",$addr,$key,$ret) if ( $ret != $keyboard_none ); |
| 387 |
return $ret; |
| 388 |
} |
| 389 |
return $keyboard_none; |
| 390 |
} |
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|
| 392 |
if ( $addr == 0x87ff ) { |
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return $self->read_tape; |
| 394 |
} |
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|
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$self->mmap_pixel( $addr, 0, $byte, 0 ); |
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return $byte; |
| 398 |
} |
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|
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=head2 write |
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|
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Write into emory |
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|
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write( $address, $byte ); |
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|
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=cut |
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|
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sub write { |
| 409 |
my $self = shift; |
| 410 |
my ($addr,$byte) = @_; |
| 411 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
| 412 |
|
| 413 |
if ( $addr == 0x8800 ) { |
| 414 |
warn sprintf "sound ignored: %x\n", $byte; |
| 415 |
} |
| 416 |
|
| 417 |
if ( $addr > 0xafff ) { |
| 418 |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
| 419 |
} |
| 420 |
|
| 421 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
| 422 |
|
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$mem[$addr] = $byte; |
| 424 |
return; |
| 425 |
} |
| 426 |
|
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=head1 AUTHOR |
| 428 |
|
| 429 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 430 |
|
| 431 |
=head1 BUGS |
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|
| 433 |
=head1 ACKNOWLEDGEMENTS |
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|
| 435 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
| 436 |
info about this machine (and even hardware implementation from 2007). |
| 437 |
|
| 438 |
=head1 COPYRIGHT & LICENSE |
| 439 |
|
| 440 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
| 441 |
|
| 442 |
This program is free software; you can redistribute it and/or modify it |
| 443 |
under the same terms as Perl itself. |
| 444 |
|
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=cut |
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|
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1; # End of Orao |
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