| 1 |
package Orao; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use Carp qw/confess/; |
| 7 |
use lib './lib'; |
| 8 |
#use Time::HiRes qw(time); |
| 9 |
use File::Slurp; |
| 10 |
use Data::Dump qw/dump/; |
| 11 |
use List::Util qw/first/; |
| 12 |
use M6502; |
| 13 |
|
| 14 |
use base qw(Class::Accessor M6502 Screen Prefs); |
| 15 |
__PACKAGE__->mk_accessors(qw(booted)); |
| 16 |
|
| 17 |
=head1 NAME |
| 18 |
|
| 19 |
Orao - Orao emulator |
| 20 |
|
| 21 |
=head1 VERSION |
| 22 |
|
| 23 |
Version 0.04 |
| 24 |
|
| 25 |
=cut |
| 26 |
|
| 27 |
our $VERSION = '0.04'; |
| 28 |
|
| 29 |
=head1 SUMMARY |
| 30 |
|
| 31 |
Emulator or Orao 8-bit 6502 machine popular in Croatia |
| 32 |
|
| 33 |
=cut |
| 34 |
|
| 35 |
my @kbd_ports = ( |
| 36 |
0x87FC,0x87FD,0x87FA,0x87FB,0x87F6,0x87F7, |
| 37 |
0x87EE,0x87EF,0x87DE,0x87DF,0x87BE,0x87BF, |
| 38 |
0x877E,0x877F,0x86FE,0x86FF,0x85FE,0x85FF, |
| 39 |
0x83FE,0x83FF, |
| 40 |
); |
| 41 |
|
| 42 |
=head1 FUNCTIONS |
| 43 |
|
| 44 |
=head2 boot |
| 45 |
|
| 46 |
Start emulator, open L<Screen>, load initial ROM images, and render memory |
| 47 |
|
| 48 |
my $orao = Orao->new({}); |
| 49 |
$orao->boot; |
| 50 |
|
| 51 |
=cut |
| 52 |
|
| 53 |
our $orao; |
| 54 |
|
| 55 |
select(STDERR); $| = 1; |
| 56 |
|
| 57 |
sub boot { |
| 58 |
my $self = shift; |
| 59 |
warn "Orao calling upstream init\n"; |
| 60 |
$self->SUPER::init( |
| 61 |
read => sub { $self->read( @_ ) }, |
| 62 |
write => sub { $self->write( @_ ) }, |
| 63 |
); |
| 64 |
|
| 65 |
warn "Orao $Orao::VERSION emulation starting\n"; |
| 66 |
|
| 67 |
warn "emulating ", $#mem, " bytes of memory\n"; |
| 68 |
|
| 69 |
$self->open_screen; |
| 70 |
$self->load_rom({ |
| 71 |
0x1000 => 'dump/SCRINV.BIN', |
| 72 |
# should be 0x6000, but oraoemu has 2 byte prefix |
| 73 |
0x5FFE => 'dump/screen.dmp', |
| 74 |
0xC000 => 'rom/BAS12.ROM', |
| 75 |
0xE000 => 'rom/CRT12.ROM', |
| 76 |
}); |
| 77 |
|
| 78 |
# $PC = 0xDD11; # BC |
| 79 |
# $PC = 0xC274; # MC |
| 80 |
|
| 81 |
$PC = 0xff89; |
| 82 |
|
| 83 |
$orao = $self; |
| 84 |
|
| 85 |
# $self->prompt( 0x1000 ); |
| 86 |
|
| 87 |
my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
| 88 |
$self->trace( 0 ); |
| 89 |
$self->debug( 0 ); |
| 90 |
|
| 91 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
| 92 |
|
| 93 |
if ( $self->show_mem ) { |
| 94 |
|
| 95 |
warn "rendering memory map\n"; |
| 96 |
|
| 97 |
$self->render_mem( @mem ); |
| 98 |
|
| 99 |
my @mmap = ( |
| 100 |
0x0000, 0x03FF, 'nulti blok', |
| 101 |
0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
| 102 |
0x6000, 0x7FFF, 'video RAM', |
| 103 |
0x8000, 0x9FFF, 'sistemske lokacije', |
| 104 |
0xA000, 0xAFFF, 'ekstenzija', |
| 105 |
0xB000, 0xBFFF, 'DOS', |
| 106 |
0xC000, 0xDFFF, 'BASIC ROM', |
| 107 |
0xE000, 0xFFFF, 'sistemski ROM', |
| 108 |
); |
| 109 |
|
| 110 |
} else { |
| 111 |
|
| 112 |
warn "rendering video memory\n"; |
| 113 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
| 114 |
|
| 115 |
} |
| 116 |
$self->sync; |
| 117 |
$self->trace( $trace ); |
| 118 |
$self->debug( $debug ); |
| 119 |
|
| 120 |
#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
| 121 |
|
| 122 |
warn "Orao boot finished", |
| 123 |
$self->trace ? ' trace' : '', |
| 124 |
$self->debug ? ' debug' : '', |
| 125 |
"\n"; |
| 126 |
|
| 127 |
M6502::reset(); |
| 128 |
|
| 129 |
$self->booted( 1 ); |
| 130 |
} |
| 131 |
|
| 132 |
=head2 run |
| 133 |
|
| 134 |
Run interactive emulation loop |
| 135 |
|
| 136 |
$orao->run; |
| 137 |
|
| 138 |
=cut |
| 139 |
|
| 140 |
sub run { |
| 141 |
my $self = shift; |
| 142 |
|
| 143 |
$self->boot if ( ! $self->booted ); |
| 144 |
$self->loop; |
| 145 |
}; |
| 146 |
|
| 147 |
=head1 Helper functions |
| 148 |
|
| 149 |
=head2 load_rom |
| 150 |
|
| 151 |
called to init memory and load initial rom images |
| 152 |
|
| 153 |
$orao->load_rom; |
| 154 |
|
| 155 |
=cut |
| 156 |
|
| 157 |
sub load_rom { |
| 158 |
my ($self, $loaded_files) = @_; |
| 159 |
|
| 160 |
#my $time_base = time(); |
| 161 |
|
| 162 |
foreach my $addr ( sort keys %$loaded_files ) { |
| 163 |
my $path = $loaded_files->{$addr}; |
| 164 |
$self->load_image( $path, $addr ); |
| 165 |
} |
| 166 |
} |
| 167 |
|
| 168 |
# write chunk directly into memory, updateing vram if needed |
| 169 |
sub _write_chunk { |
| 170 |
my $self = shift; |
| 171 |
my ( $addr, $chunk ) = @_; |
| 172 |
$self->write_chunk( $addr, $chunk ); |
| 173 |
my $end = $addr + length($chunk); |
| 174 |
my ( $f, $t ) = ( 0x6000, 0x7fff ); |
| 175 |
|
| 176 |
if ( $end < $f || $addr >= $t ) { |
| 177 |
warn "skip vram update\n"; |
| 178 |
return; |
| 179 |
}; |
| 180 |
|
| 181 |
$f = $addr if ( $addr > $f ); |
| 182 |
$t = $end if ( $end < $t ); |
| 183 |
|
| 184 |
warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
| 185 |
# foreach my $a ( $f .. $t ) { |
| 186 |
# $self->vram( $a - 0x6000 , $mem[ $a ] ); |
| 187 |
# } |
| 188 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
| 189 |
$self->render_mem( @mem ) if $self->show_mem; |
| 190 |
} |
| 191 |
|
| 192 |
=head2 load_image |
| 193 |
|
| 194 |
Load binary files, ROM images and Orao Emulator files |
| 195 |
|
| 196 |
$orao->load_image( '/path/to/file', 0x1000 ); |
| 197 |
|
| 198 |
Returns true on success. |
| 199 |
|
| 200 |
=cut |
| 201 |
|
| 202 |
sub load_image { |
| 203 |
my $self = shift; |
| 204 |
my ( $path, $addr ) = @_; |
| 205 |
|
| 206 |
if ( ! -e $path ) { |
| 207 |
warn "ERROR: file $path doesn't exist\n"; |
| 208 |
return; |
| 209 |
} |
| 210 |
|
| 211 |
my $size = -s $path || confess "no size for $path: $!"; |
| 212 |
|
| 213 |
my $buff = read_file( $path ); |
| 214 |
|
| 215 |
if ( $size == 65538 ) { |
| 216 |
$addr = 0; |
| 217 |
warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 218 |
$self->_write_chunk( $addr, substr($buff,2) ); |
| 219 |
return 1; |
| 220 |
} elsif ( $size == 32800 ) { |
| 221 |
$addr = 0; |
| 222 |
warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 223 |
$self->_write_chunk( $addr, substr($buff,0x20) ); |
| 224 |
return 1; |
| 225 |
} |
| 226 |
printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
| 227 |
$self->_write_chunk( $addr, $buff ); |
| 228 |
return 1; |
| 229 |
|
| 230 |
my $chunk; |
| 231 |
|
| 232 |
my $pos = 0; |
| 233 |
|
| 234 |
while ( my $long = substr($buff,$pos,4) ) { |
| 235 |
my @b = split(//, $long, 4); |
| 236 |
$chunk .= |
| 237 |
( $b[3] || '' ) . |
| 238 |
( $b[2] || '' ) . |
| 239 |
( $b[1] || '' ) . |
| 240 |
( $b[0] || '' ); |
| 241 |
$pos += 4; |
| 242 |
} |
| 243 |
|
| 244 |
$self->_write_chunk( $addr, $chunk ); |
| 245 |
|
| 246 |
return 1; |
| 247 |
}; |
| 248 |
|
| 249 |
=head2 save_dump |
| 250 |
|
| 251 |
$orao->save_dump( 'filename', $from, $to ); |
| 252 |
|
| 253 |
=cut |
| 254 |
|
| 255 |
sub save_dump { |
| 256 |
my $self = shift; |
| 257 |
|
| 258 |
my ( $path, $from, $to ) = @_; |
| 259 |
|
| 260 |
$from ||= 0; |
| 261 |
$to ||= 0xffff; |
| 262 |
|
| 263 |
open(my $fh, '>', $path) || die "can't open $path: $!"; |
| 264 |
print $fh $self->read_chunk( $from, $to ); |
| 265 |
close($fh); |
| 266 |
|
| 267 |
my $size = -s $path; |
| 268 |
warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
| 269 |
} |
| 270 |
|
| 271 |
=head2 hexdump |
| 272 |
|
| 273 |
$orao->hexdump( $address ); |
| 274 |
|
| 275 |
=cut |
| 276 |
|
| 277 |
sub hexdump { |
| 278 |
my $self = shift; |
| 279 |
my $a = shift; |
| 280 |
return sprintf(" %04x %s\n", $a, |
| 281 |
join(" ", |
| 282 |
map { |
| 283 |
if ( defined($_) ) { |
| 284 |
sprintf( "%02x", $_ ) |
| 285 |
} else { |
| 286 |
' ' |
| 287 |
} |
| 288 |
} @mem[ $a .. $a+8 ] |
| 289 |
) |
| 290 |
); |
| 291 |
} |
| 292 |
|
| 293 |
=head1 Memory management |
| 294 |
|
| 295 |
Orao implements all I/O using mmap addresses. This was main reason why |
| 296 |
L<Acme::6502> was just too slow to handle it. |
| 297 |
|
| 298 |
=cut |
| 299 |
|
| 300 |
=head2 read |
| 301 |
|
| 302 |
Read from memory |
| 303 |
|
| 304 |
$byte = read( $address ); |
| 305 |
|
| 306 |
=cut |
| 307 |
|
| 308 |
sub read { |
| 309 |
my $self = shift; |
| 310 |
my ($addr) = @_; |
| 311 |
my $byte = $mem[$addr]; |
| 312 |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
| 313 |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
| 314 |
|
| 315 |
# keyboard |
| 316 |
|
| 317 |
if ( first { $addr == $_ } @kbd_ports ) { |
| 318 |
warn sprintf("keyboard port: %04x\n",$addr); |
| 319 |
} elsif ( $addr == 0x87fc ) { |
| 320 |
warn "0x87fc - arrows/back\n"; |
| 321 |
=for pascal |
| 322 |
if VKey=VK_RIGHT then Result:=16; |
| 323 |
if VKey=VK_DOWN then Result:=128; |
| 324 |
if VKey=VK_UP then Result:=192; |
| 325 |
if VKey=VK_LEFT then Result:=224; |
| 326 |
if Ord(KeyPressed)=VK_BACK then Result:=224; |
| 327 |
=cut |
| 328 |
} elsif ( $addr == 0x87fd ) { |
| 329 |
warn "0x87fd - enter\n"; |
| 330 |
=for pascal |
| 331 |
if KeyPressed=Chr(13) then begin |
| 332 |
Mem[$FC]:=13; |
| 333 |
Result:=0; |
| 334 |
end; |
| 335 |
=cut |
| 336 |
} elsif ( $addr == 0x87fa ) { |
| 337 |
warn "0x87fa = F1 - F4\n"; |
| 338 |
=for pascal |
| 339 |
if VKey=VK_F4 then Result:=16; |
| 340 |
if VKey=VK_F3 then Result:=128; |
| 341 |
if VKey=VK_F2 then Result:=192; |
| 342 |
if VKey=VK_F1 then Result:=224; |
| 343 |
=cut |
| 344 |
} elsif ( $addr == 0x87fb ) { |
| 345 |
warn "0x87fb\n"; |
| 346 |
=for pascal |
| 347 |
if KeyPressed=Chr(32) then Result:=32; |
| 348 |
if KeyPressed='"' then Result:=16; |
| 349 |
if KeyPressed='!' then Result:=16; |
| 350 |
if KeyPressed='$' then Result:=16; |
| 351 |
if KeyPressed='%' then Result:=16; |
| 352 |
if KeyPressed='&' then Result:=16; |
| 353 |
if KeyPressed='(' then Result:=16; |
| 354 |
if KeyPressed=')' then Result:=16; |
| 355 |
if KeyPressed='=' then Result:=16; |
| 356 |
if KeyPressed='#' then Result:=16; |
| 357 |
if KeyPressed='+' then Result:=16; |
| 358 |
if KeyPressed='*' then Result:=16; |
| 359 |
if KeyPressed='?' then Result:=16; |
| 360 |
if KeyPressed='<' then Result:=16; |
| 361 |
if KeyPressed='>' then Result:=16; |
| 362 |
if VKey=191 then Result:=16; |
| 363 |
=cut |
| 364 |
} |
| 365 |
|
| 366 |
$self->mmap_pixel( $addr, 0, $byte, 0 ); |
| 367 |
return $byte; |
| 368 |
} |
| 369 |
|
| 370 |
=head2 write |
| 371 |
|
| 372 |
Write into emory |
| 373 |
|
| 374 |
write( $address, $byte ); |
| 375 |
|
| 376 |
=cut |
| 377 |
|
| 378 |
sub write { |
| 379 |
my $self = shift; |
| 380 |
my ($addr,$byte) = @_; |
| 381 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
| 382 |
|
| 383 |
if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
| 384 |
$self->vram( $addr - 0x6000 , $byte ); |
| 385 |
} |
| 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 ); |
| 396 |
|
| 397 |
$mem[$addr] = $byte; |
| 398 |
return; |
| 399 |
} |
| 400 |
|
| 401 |
=head1 Command Line |
| 402 |
|
| 403 |
Command-line debugging intrerface is implemented for communication with |
| 404 |
emulated device |
| 405 |
|
| 406 |
=head2 prompt |
| 407 |
|
| 408 |
my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
| 409 |
|
| 410 |
=cut |
| 411 |
|
| 412 |
my $last = 'r 1'; |
| 413 |
|
| 414 |
sub prompt { |
| 415 |
my $self = shift; |
| 416 |
$self->app->sync; |
| 417 |
my $a = shift; |
| 418 |
print STDERR $self->hexdump( $a ), |
| 419 |
$last ? "[$last] " : '', |
| 420 |
"> "; |
| 421 |
my $in = <STDIN>; |
| 422 |
chomp($in); |
| 423 |
warn "## prompt got: $in\n" if $self->debug; |
| 424 |
$in ||= $last; |
| 425 |
$last = $in; |
| 426 |
return ( $in, split(/\s+/, $in) ) if $in; |
| 427 |
} |
| 428 |
|
| 429 |
=head2 cli |
| 430 |
|
| 431 |
$orao->cli(); |
| 432 |
|
| 433 |
=cut |
| 434 |
|
| 435 |
my $show_R = 0; |
| 436 |
|
| 437 |
sub cli { |
| 438 |
my $self = shift; |
| 439 |
my $a = $PC || confess "no pc?"; |
| 440 |
my $run_for = 0; |
| 441 |
warn $self->dump_R() if $show_R; |
| 442 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
| 443 |
my $c = shift @v; |
| 444 |
next unless defined($c); |
| 445 |
my $v = shift @v; |
| 446 |
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
| 447 |
@v = map { hex($_) } @v; |
| 448 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
| 449 |
if ( $c =~ m/^[qx]/i ) { |
| 450 |
exit; |
| 451 |
} elsif ( $c eq '?' ) { |
| 452 |
my $t = $self->trace ? 'on' : 'off' ; |
| 453 |
my $d = $self->debug ? 'on' : 'off' ; |
| 454 |
warn <<__USAGE__; |
| 455 |
Usage: |
| 456 |
|
| 457 |
x|q\t\texit |
| 458 |
e 6000 6010\tdump memory, +/- to walk forward/backward |
| 459 |
m 1000 ff 00\tput ff 00 on 1000 |
| 460 |
j|u 1000\t\tjump (change pc) |
| 461 |
r 42\t\trun 42 instruction opcodes |
| 462 |
t\t\ttrace [$t] |
| 463 |
d\t\tdebug [$d] |
| 464 |
|
| 465 |
__USAGE__ |
| 466 |
warn $self->dump_R; |
| 467 |
} elsif ( $c =~ m/^e/i ) { |
| 468 |
$a = $v if defined($v); |
| 469 |
my $to = shift @v; |
| 470 |
$to = $a + 32 if ( ! $to || $to <= $a ); |
| 471 |
$to = 0xffff if ( $to > 0xffff ); |
| 472 |
my $lines = int( ($to - $a + 8) / 8 ); |
| 473 |
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
| 474 |
while ( --$lines ) { |
| 475 |
print $self->hexdump( $a ); |
| 476 |
$a += 8; |
| 477 |
} |
| 478 |
$last = '+'; |
| 479 |
$show_R = 0; |
| 480 |
} elsif ( $c =~ m/^\+/ ) { |
| 481 |
$a += 8; |
| 482 |
$show_R = 0; |
| 483 |
} elsif ( $c =~ m/^\-/ ) { |
| 484 |
$a -= 8; |
| 485 |
$show_R = 0; |
| 486 |
} elsif ( $c =~ m/^m/i ) { |
| 487 |
$a = $v if defined($v); |
| 488 |
$self->poke_code( $a, @v ); |
| 489 |
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
| 490 |
$last = '+'; |
| 491 |
$show_R = 0; |
| 492 |
} elsif ( $c =~ m/^l/i ) { |
| 493 |
my $to = shift @v || 0x1000; |
| 494 |
$a = $to; |
| 495 |
$self->load_image( $v, $a ); |
| 496 |
$last = ''; |
| 497 |
} elsif ( $c =~ m/^s/i ) { |
| 498 |
$self->save_dump( $v || 'mem.dump', @v ); |
| 499 |
$last = ''; |
| 500 |
} elsif ( $c =~ m/^r/i ) { |
| 501 |
$run_for = $v || 1; |
| 502 |
print "run_for $run_for instructions\n"; |
| 503 |
$show_R = 1; |
| 504 |
last; |
| 505 |
} elsif ( $c =~ m/^(u|j)/ ) { |
| 506 |
my $to = $v || $a; |
| 507 |
printf "set pc to %04x\n", $to; |
| 508 |
$PC = $to; # remember for restart |
| 509 |
$run_for = 1; |
| 510 |
$last = "r $run_for"; |
| 511 |
$show_R = 1; |
| 512 |
last; |
| 513 |
} elsif ( $c =~ m/^t/ ) { |
| 514 |
$self->trace( not $self->trace ); |
| 515 |
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
| 516 |
$last = ''; |
| 517 |
} elsif ( $c =~ m/^d/ ) { |
| 518 |
$self->debug( not $self->debug ); |
| 519 |
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
| 520 |
$last = ''; |
| 521 |
} else { |
| 522 |
warn "# ignored $line\n" if ($line); |
| 523 |
$last = ''; |
| 524 |
} |
| 525 |
} |
| 526 |
|
| 527 |
return $run_for; |
| 528 |
} |
| 529 |
|
| 530 |
=head1 AUTHOR |
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|
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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=head1 BUGS |
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=head1 ACKNOWLEDGEMENTS |
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See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
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info about this machine (and even hardware implementation from 2007). |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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=cut |
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1; # End of Orao |
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