| 1 |
package Orao; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use Carp qw/confess/; |
| 7 |
use File::Slurp; |
| 8 |
use Data::Dump qw/dump/; |
| 9 |
use M6502; # import @mem $PC and friends |
| 10 |
use Screen qw/$white $black/; |
| 11 |
|
| 12 |
use base qw(Class::Accessor VRac M6502 Screen Prefs Tape); |
| 13 |
#__PACKAGE__->mk_accessors(qw()); |
| 14 |
|
| 15 |
=head1 NAME |
| 16 |
|
| 17 |
Orao - Orao emulator |
| 18 |
|
| 19 |
=head1 VERSION |
| 20 |
|
| 21 |
Version 0.05 |
| 22 |
|
| 23 |
=cut |
| 24 |
|
| 25 |
our $VERSION = '0.05'; |
| 26 |
|
| 27 |
=head1 SUMMARY |
| 28 |
|
| 29 |
Emulator or Orao 8-bit 6502 machine popular in Croatia |
| 30 |
|
| 31 |
=cut |
| 32 |
|
| 33 |
=head1 FUNCTIONS |
| 34 |
|
| 35 |
=head2 run |
| 36 |
|
| 37 |
Start emulator, open L<Screen>, load initial ROM images, and start emulator loop |
| 38 |
|
| 39 |
=cut |
| 40 |
|
| 41 |
our $emu; |
| 42 |
|
| 43 |
sub run { |
| 44 |
my $self = shift; |
| 45 |
|
| 46 |
warn "Orao calling upstream init\n"; |
| 47 |
$self->SUPER::init( |
| 48 |
read => sub { $self->read( @_ ) }, |
| 49 |
write => sub { $self->write( @_ ) }, |
| 50 |
); |
| 51 |
|
| 52 |
warn "Orao $Orao::VERSION emulation starting\n"; |
| 53 |
|
| 54 |
warn "emulating ", $#mem, " bytes of memory\n"; |
| 55 |
|
| 56 |
# $self->scale( 2 ); |
| 57 |
|
| 58 |
$self->open_screen; |
| 59 |
$self->load_rom({ |
| 60 |
# 0x1000 => 'dump/SCRINV.BIN', |
| 61 |
# should be 0x6000, but oraoemu has 2 byte prefix |
| 62 |
# 0x5FFE => '/home/dpavlin/orao/dump/screen.dmp', |
| 63 |
# 0xC000 => 'rom/Orao/BAS12.ROM', |
| 64 |
# 0xE000 => 'rom/Orao/CRT12.ROM', |
| 65 |
0xC000 => 'rom/Orao/BAS13.ROM', |
| 66 |
0xE000 => 'rom/Orao/CRT13.ROM', |
| 67 |
}); |
| 68 |
|
| 69 |
# $PC = 0xDD11; # BC |
| 70 |
# $PC = 0xC274; # MC |
| 71 |
|
| 72 |
$PC = 0xff89; |
| 73 |
|
| 74 |
$emu = $self; |
| 75 |
|
| 76 |
# $self->prompt( 0x1000 ); |
| 77 |
|
| 78 |
my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
| 79 |
$self->trace( 0 ); |
| 80 |
$self->debug( 0 ); |
| 81 |
|
| 82 |
warn "rendering video memory\n"; |
| 83 |
$self->render_vram; |
| 84 |
|
| 85 |
if ( $self->show_mem ) { |
| 86 |
|
| 87 |
warn "rendering memory map\n"; |
| 88 |
|
| 89 |
$self->render_mem( @mem ); |
| 90 |
|
| 91 |
my @mmap = ( |
| 92 |
0x0000, 0x03FF, 'nulti blok', |
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0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
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0x6000, 0x7FFF, 'video RAM', |
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0x8000, 0x9FFF, 'sistemske lokacije', |
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0xA000, 0xAFFF, 'ekstenzija', |
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0xB000, 0xBFFF, 'DOS', |
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0xC000, 0xDFFF, 'BASIC ROM', |
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0xE000, 0xFFFF, 'sistemski ROM', |
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); |
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|
| 102 |
} |
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$self->sync; |
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$self->trace( $trace ); |
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$self->debug( $debug ); |
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|
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warn "Orao boot finished", |
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$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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# $self->load_tape( '../oraoigre/bdash.tap' ); |
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|
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$self->loop( sub { |
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my $run_for = shift; |
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warn sprintf("about to exec from PC %04x for %d cycles\n", $PC, $run_for) if $self->trace; |
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M6502::exec( $run_for ); |
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$self->render_vram; |
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}); |
| 122 |
}; |
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|
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|
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=head1 Helper functions |
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|
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=head2 write_chunk |
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|
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Write chunk directly into memory, updateing vram if needed |
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|
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$emu->write_chunk( 0x1000, $chunk_data ); |
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|
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=cut |
| 134 |
|
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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->SUPER::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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|
| 142 |
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; |
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$self->render_mem( @mem ); |
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} |
| 154 |
|
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=head2 load_image |
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|
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Load binary files, ROM images and Orao Emulator files |
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|
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$emu->load_image( '/path/to/file', 0x1000 ); |
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|
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Returns true on success. |
| 162 |
|
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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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|
| 169 |
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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|
| 178 |
if ( $size == 65538 ) { |
| 179 |
$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; |
| 183 |
} 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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|
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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, $buff ); |
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return 1; |
| 193 |
}; |
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|
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|
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=head1 Memory management |
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|
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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|
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=cut |
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|
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=head2 read |
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|
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Read from memory |
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|
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$byte = read( $address ); |
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|
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=cut |
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|
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my $keyboard_none = 255; |
| 212 |
|
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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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}, |
| 221 |
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"; |
| 226 |
return 0; |
| 227 |
} elsif ( $key =~ m/ ctrl/ || $self->key_down( 'left ctrl' ) || $self->key_down( 'right ctrl' ) ) { |
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warn "ctrl\n"; |
| 229 |
return 16; |
| 230 |
} |
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return $keyboard_none; |
| 232 |
}, |
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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; |
| 243 |
} 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!"; |
| 248 |
# return 0; |
| 249 |
} |
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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, # < |
| 290 |
'.' => 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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}, |
| 298 |
0x877F => { |
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'x' => 32, |
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'c' => 16, |
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}, |
| 302 |
0x86FE => { |
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'n' => 16, |
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'g' => 128, |
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'h' => 192, |
| 306 |
'f' => 224, |
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}, |
| 308 |
0x86FF => { |
| 309 |
'b' => 32, |
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'v' => 16, |
| 311 |
}, |
| 312 |
0x85FE => { |
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'<' => 16, # : |
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'\\' => 128, # ¾ |
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'\'' => 192, # æ |
| 316 |
';' => 224, # è |
| 317 |
}, |
| 318 |
0x85FF => { |
| 319 |
'/' => 32, |
| 320 |
'f11' => 16, # ^ |
| 321 |
}, |
| 322 |
0x83FE => { |
| 323 |
'f12' => 16, # ; |
| 324 |
'[' => 128, # ¹ |
| 325 |
']' => 192, # ð |
| 326 |
'p' => 224, |
| 327 |
}, |
| 328 |
0x83FF => { |
| 329 |
'-' => 32, |
| 330 |
'0' => 16, |
| 331 |
}, |
| 332 |
}; |
| 333 |
|
| 334 |
sub read { |
| 335 |
my $self = shift; |
| 336 |
my ($addr) = @_; |
| 337 |
return if ( $addr > 0xffff ); |
| 338 |
my $byte = $mem[$addr]; |
| 339 |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
| 340 |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
| 341 |
|
| 342 |
# keyboard |
| 343 |
|
| 344 |
if ( defined( $keyboard->{$addr} ) ) { |
| 345 |
warn sprintf("keyboard port: %04x\n",$addr) if $self->trace; |
| 346 |
my $key = $self->key_pressed; |
| 347 |
if ( defined($key) ) { |
| 348 |
my $ret = $keyboard_none; |
| 349 |
my $r = $keyboard->{$addr} || confess "no definition for keyboard port found"; |
| 350 |
if ( ref($r) eq 'CODE' ) { |
| 351 |
$ret = $r->($self, $key); |
| 352 |
} elsif ( defined($r->{$key}) ) { |
| 353 |
$ret = $r->{$key}; |
| 354 |
if ( ref($ret) eq 'CODE' ) { |
| 355 |
$ret = $ret->($self); |
| 356 |
} |
| 357 |
} else { |
| 358 |
warn sprintf("keyboard port: %04x unknown key: '%s'\n", $addr, $key) if $debug; |
| 359 |
} |
| 360 |
warn sprintf("keyboard port: %04x key:%s code:%d\n",$addr,$key,$ret) if ( $ret != $keyboard_none ); |
| 361 |
return $ret; |
| 362 |
} |
| 363 |
return $keyboard_none; |
| 364 |
} |
| 365 |
|
| 366 |
if ( $addr == 0x87ff ) { |
| 367 |
return $self->read_tape; |
| 368 |
} |
| 369 |
|
| 370 |
$self->mmap_pixel( $addr, 0, $byte, 0 ) if $self->show_mem; |
| 371 |
return $byte; |
| 372 |
} |
| 373 |
|
| 374 |
=head2 write |
| 375 |
|
| 376 |
Write into emory |
| 377 |
|
| 378 |
write( $address, $byte ); |
| 379 |
|
| 380 |
=cut |
| 381 |
|
| 382 |
sub write { |
| 383 |
my $self = shift; |
| 384 |
my ($addr,$byte) = @_; |
| 385 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
| 386 |
|
| 387 |
if ( $addr == 0x8800 ) { |
| 388 |
warn sprintf "sound ignored: %x\n", $byte; |
| 389 |
} |
| 390 |
|
| 391 |
if ( $addr > 0xafff ) { |
| 392 |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
| 393 |
} |
| 394 |
|
| 395 |
$self->mmap_pixel( $addr, $byte, 0, 0 ) if $self->show_mem; |
| 396 |
$mem[$addr] = $byte; |
| 397 |
return; |
| 398 |
} |
| 399 |
|
| 400 |
=head2 render_vram |
| 401 |
|
| 402 |
Render one frame of video ram |
| 403 |
|
| 404 |
$self->render_vram; |
| 405 |
|
| 406 |
=cut |
| 407 |
|
| 408 |
my @flip; |
| 409 |
|
| 410 |
foreach my $i ( 0 .. 255 ) { |
| 411 |
my $t = 0; |
| 412 |
$i & 0b00000001 and $t = $t | 0b10000000; |
| 413 |
$i & 0b00000010 and $t = $t | 0b01000000; |
| 414 |
$i & 0b00000100 and $t = $t | 0b00100000; |
| 415 |
$i & 0b00001000 and $t = $t | 0b00010000; |
| 416 |
$i & 0b00010000 and $t = $t | 0b00001000; |
| 417 |
$i & 0b00100000 and $t = $t | 0b00000100; |
| 418 |
$i & 0b01000000 and $t = $t | 0b00000010; |
| 419 |
$i & 0b10000000 and $t = $t | 0b00000001; |
| 420 |
#warn "$i = $t\n"; |
| 421 |
$flip[$i] = $t; |
| 422 |
} |
| 423 |
|
| 424 |
|
| 425 |
sub render_vram { |
| 426 |
my $self = shift; |
| 427 |
|
| 428 |
my $pixels = pack("C*", map { $flip[$_] } @mem[ 0x6000 .. 0x7fff ]); |
| 429 |
|
| 430 |
my $vram = SDL::Surface->new( |
| 431 |
-width => 256, |
| 432 |
-height => 256, |
| 433 |
-depth => 1, # 1 bit per pixel |
| 434 |
-pitch => 32, # bytes per line |
| 435 |
-from => $pixels, |
| 436 |
); |
| 437 |
$vram->set_colors( 0, $black, $white ); |
| 438 |
|
| 439 |
$self->render_frame( $vram ); |
| 440 |
} |
| 441 |
|
| 442 |
=head2 cpu_PC |
| 443 |
|
| 444 |
=cut |
| 445 |
|
| 446 |
sub cpu_PC { |
| 447 |
my ( $self, $addr ) = @_; |
| 448 |
if ( defined($addr) ) { |
| 449 |
$PC = $addr; |
| 450 |
warn sprintf("running from PC %04x\n", $PC); |
| 451 |
}; |
| 452 |
return $PC; |
| 453 |
} |
| 454 |
|
| 455 |
=head1 AUTHOR |
| 456 |
|
| 457 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 458 |
|
| 459 |
=head1 BUGS |
| 460 |
|
| 461 |
=head1 ACKNOWLEDGEMENTS |
| 462 |
|
| 463 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
| 464 |
info about this machine (and even hardware implementation from 2007). |
| 465 |
|
| 466 |
=head1 COPYRIGHT & LICENSE |
| 467 |
|
| 468 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
| 469 |
|
| 470 |
This program is free software; you can redistribute it and/or modify it |
| 471 |
under the same terms as Perl itself. |
| 472 |
|
| 473 |
=cut |
| 474 |
|
| 475 |
1; # End of Orao |
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