| 1 |
package Orao; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use Carp; |
| 7 |
use lib './lib'; |
| 8 |
#use Time::HiRes qw(time); |
| 9 |
use File::Slurp; |
| 10 |
use Data::Dump qw/dump/; |
| 11 |
use M6502; |
| 12 |
|
| 13 |
use base qw(Class::Accessor M6502 Screen); |
| 14 |
__PACKAGE__->mk_accessors(qw(debug trace run_for mem_dump trace)); |
| 15 |
|
| 16 |
=head1 NAME |
| 17 |
|
| 18 |
Orao - Orao emulator |
| 19 |
|
| 20 |
=head1 VERSION |
| 21 |
|
| 22 |
Version 0.02 |
| 23 |
|
| 24 |
=cut |
| 25 |
|
| 26 |
our $VERSION = '0.02'; |
| 27 |
|
| 28 |
=head1 SUMMARY |
| 29 |
|
| 30 |
Emulator or Orao 8-bit 6502 machine popular in Croatia |
| 31 |
|
| 32 |
=cut |
| 33 |
|
| 34 |
=head2 init |
| 35 |
|
| 36 |
Start emulator |
| 37 |
|
| 38 |
=cut |
| 39 |
|
| 40 |
our $orao; |
| 41 |
|
| 42 |
sub init { |
| 43 |
my $self = shift; |
| 44 |
warn "Orao calling upstream init\n"; |
| 45 |
$self->SUPER::init( $self, @_ ); |
| 46 |
|
| 47 |
warn "staring Orao $Orao::VERSION emulation\n"; |
| 48 |
|
| 49 |
$self->open_screen; |
| 50 |
$self->load_rom({ |
| 51 |
0x1000 => 'dump/SCRINV.BIN', |
| 52 |
0xC000 => 'rom/BAS12.ROM', |
| 53 |
0xE000 => 'rom/CRT12.ROM', |
| 54 |
}); |
| 55 |
|
| 56 |
$self->load_oraoemu( 'dump/orao-1.2' ); |
| 57 |
$self->load_oraoemu( 'dump/SCRINV.BIN' ); |
| 58 |
$PC = 0x1000; |
| 59 |
|
| 60 |
$orao = $self; |
| 61 |
|
| 62 |
# $self->prompt( 0x1000 ); |
| 63 |
|
| 64 |
warn "rendering memory map\n"; |
| 65 |
|
| 66 |
my @mmap = ( |
| 67 |
0x0000, 0x03FF, 'nulti blok', |
| 68 |
0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
| 69 |
0x6000, 0x7FFF, 'video RAM', |
| 70 |
0x8000, 0x9FFF, 'sistemske lokacije', |
| 71 |
0xA000, 0xAFFF, 'ekstenzija', |
| 72 |
0xB000, 0xBFFF, 'DOS', |
| 73 |
0xC000, 0xDFFF, 'BASIC ROM', |
| 74 |
0xE000, 0xFFFF, 'sistemski ROM', |
| 75 |
); |
| 76 |
|
| 77 |
foreach my $i ( 0 .. $#mmap / 3 ) { |
| 78 |
my $o = $i * 3; |
| 79 |
my ( $from, $to, $desc ) = @mmap[$o,$o+1,$o+2]; |
| 80 |
printf "%04x - %04x - %s\n", $from, $to, $desc; |
| 81 |
for my $a ( $from .. $to ) { |
| 82 |
$orao->read( $a ); |
| 83 |
} |
| 84 |
$self->sync; |
| 85 |
} |
| 86 |
|
| 87 |
warn "Orao init finished\n"; |
| 88 |
|
| 89 |
} |
| 90 |
|
| 91 |
=head2 load_rom |
| 92 |
|
| 93 |
called to init memory and load initial rom images |
| 94 |
|
| 95 |
$orao->load_rom; |
| 96 |
|
| 97 |
=cut |
| 98 |
|
| 99 |
sub load_rom { |
| 100 |
my ($self, $loaded_files) = @_; |
| 101 |
|
| 102 |
#my $time_base = time(); |
| 103 |
|
| 104 |
foreach my $addr ( sort keys %$loaded_files ) { |
| 105 |
my $path = $loaded_files->{$addr}; |
| 106 |
$self->load_oraoemu( $path, $addr ); |
| 107 |
} |
| 108 |
} |
| 109 |
|
| 110 |
|
| 111 |
=head2 load_oraoemu |
| 112 |
|
| 113 |
=cut |
| 114 |
|
| 115 |
sub load_oraoemu { |
| 116 |
my $self = shift; |
| 117 |
my ( $path, $addr ) = @_; |
| 118 |
|
| 119 |
my $size = -s $path || confess "no size for $path: $!"; |
| 120 |
|
| 121 |
my $buff = read_file( $path ); |
| 122 |
|
| 123 |
if ( $size == 65538 ) { |
| 124 |
$addr = 0; |
| 125 |
warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 126 |
$self->write_chunk( $addr, substr($buff,2) ); |
| 127 |
return; |
| 128 |
} elsif ( $size == 32800 ) { |
| 129 |
$addr = 0; |
| 130 |
warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 131 |
#$self->write_chunk( $addr, substr($buff,0x20) ); |
| 132 |
$self->poke_code( $addr, map { ord($_) } split(//,substr($buff,0x20)) ); |
| 133 |
return; |
| 134 |
} |
| 135 |
printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 136 |
return $self->poke_code( $addr, map { ord($_) } split(//,$buff) ); |
| 137 |
return $self->write_chunk( $addr, $buff ); |
| 138 |
|
| 139 |
my $chunk; |
| 140 |
|
| 141 |
my $pos = 0; |
| 142 |
|
| 143 |
while ( my $long = substr($buff,$pos,4) ) { |
| 144 |
my @b = split(//, $long, 4); |
| 145 |
$chunk .= |
| 146 |
( $b[3] || '' ) . |
| 147 |
( $b[2] || '' ) . |
| 148 |
( $b[1] || '' ) . |
| 149 |
( $b[0] || '' ); |
| 150 |
$pos += 4; |
| 151 |
} |
| 152 |
|
| 153 |
$self->write_chunk( $addr, $chunk ); |
| 154 |
|
| 155 |
}; |
| 156 |
|
| 157 |
=head2 save_dump |
| 158 |
|
| 159 |
$orao->save_dump( 'filename', $from, $to ); |
| 160 |
|
| 161 |
=cut |
| 162 |
|
| 163 |
sub save_dump { |
| 164 |
my $self = shift; |
| 165 |
|
| 166 |
my ( $path, $from, $to ) = @_; |
| 167 |
|
| 168 |
$from ||= 0; |
| 169 |
$to ||= 0xffff; |
| 170 |
|
| 171 |
open(my $fh, '>', $path) || die "can't open $path: $!"; |
| 172 |
print $fh $self->read_chunk( $from, $to ); |
| 173 |
close($fh); |
| 174 |
|
| 175 |
my $size = -s $path; |
| 176 |
warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
| 177 |
} |
| 178 |
|
| 179 |
=head2 hexdump |
| 180 |
|
| 181 |
$orao->hexdump( $address ); |
| 182 |
|
| 183 |
=cut |
| 184 |
|
| 185 |
sub hexdump { |
| 186 |
my $self = shift; |
| 187 |
my $a = shift; |
| 188 |
return sprintf(" %04x %s\n", $a, |
| 189 |
join(" ", |
| 190 |
map { |
| 191 |
sprintf( "%02x", $_ ) |
| 192 |
} $self->ram( $a, $a+8 ) |
| 193 |
) |
| 194 |
); |
| 195 |
} |
| 196 |
|
| 197 |
=head2 prompt |
| 198 |
|
| 199 |
$orao->prompt( $address, $last_command ); |
| 200 |
|
| 201 |
=cut |
| 202 |
|
| 203 |
sub prompt { |
| 204 |
my $self = shift; |
| 205 |
my $a = shift; |
| 206 |
my $last = shift; |
| 207 |
print STDERR $self->hexdump( $a ), |
| 208 |
$last ? "[$last] " : '', |
| 209 |
"> "; |
| 210 |
my $in = <STDIN>; |
| 211 |
chomp($in); |
| 212 |
$in ||= $last; |
| 213 |
$last = $in; |
| 214 |
return split(/\s+/, $in) if $in; |
| 215 |
} |
| 216 |
|
| 217 |
=head1 Memory management |
| 218 |
|
| 219 |
Orao implements all I/O using mmap addresses. This was main reason why |
| 220 |
L<Acme::6502> was just too slow to handle it. |
| 221 |
|
| 222 |
=cut |
| 223 |
|
| 224 |
=head2 read |
| 225 |
|
| 226 |
Read from memory |
| 227 |
|
| 228 |
$byte = read( $address ); |
| 229 |
|
| 230 |
=cut |
| 231 |
|
| 232 |
sub read { |
| 233 |
my $self = shift; |
| 234 |
my ($addr) = @_; |
| 235 |
my $byte = $mem[$addr]; |
| 236 |
warn "# Orao::read(",dump(@_),") = ",dump( $byte ),"\n" if $self->debug; |
| 237 |
$self->mmap_pixel( $addr, 0, $byte, 0 ); |
| 238 |
return $byte; |
| 239 |
} |
| 240 |
|
| 241 |
=head2 write |
| 242 |
|
| 243 |
Write into emory |
| 244 |
|
| 245 |
write( $address, $byte ); |
| 246 |
|
| 247 |
=cut |
| 248 |
|
| 249 |
sub write { |
| 250 |
my $self = shift; |
| 251 |
warn "# Orao::write(",dump(@_),")\n" if $self->debug; |
| 252 |
my ($addr,$byte) = @_; |
| 253 |
|
| 254 |
if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
| 255 |
$self->vram( $addr - 0x6000 , $byte ); |
| 256 |
} |
| 257 |
|
| 258 |
if ( $addr > 0xafff ) { |
| 259 |
warn sprintf "access to %04x above affff aborting\n", $addr; |
| 260 |
return -1; |
| 261 |
} |
| 262 |
if ( $addr == 0x8800 ) { |
| 263 |
warn sprintf "sound ignored: %x\n", $byte; |
| 264 |
} |
| 265 |
|
| 266 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
| 267 |
|
| 268 |
$mem[$addr] = $byte; |
| 269 |
} |
| 270 |
|
| 271 |
|
| 272 |
=head1 AUTHOR |
| 273 |
|
| 274 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 275 |
|
| 276 |
=head1 BUGS |
| 277 |
|
| 278 |
=head1 ACKNOWLEDGEMENTS |
| 279 |
|
| 280 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
| 281 |
info about this machine (and even hardware implementation from 2007). |
| 282 |
|
| 283 |
=head1 COPYRIGHT & LICENSE |
| 284 |
|
| 285 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
| 286 |
|
| 287 |
This program is free software; you can redistribute it and/or modify it |
| 288 |
under the same terms as Perl itself. |
| 289 |
|
| 290 |
=cut |
| 291 |
|
| 292 |
1; # End of Orao |
Parent Directory
| 
Revision Log