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 M6502; |
12 |
|
13 |
use base qw(Class::Accessor M6502 Screen Prefs Tape); |
14 |
__PACKAGE__->mk_accessors(qw(booted)); |
15 |
|
16 |
=head1 NAME |
17 |
|
18 |
Orao - Orao emulator |
19 |
|
20 |
=head1 VERSION |
21 |
|
22 |
Version 0.04 |
23 |
|
24 |
=cut |
25 |
|
26 |
our $VERSION = '0.04'; |
27 |
|
28 |
=head1 SUMMARY |
29 |
|
30 |
Emulator or Orao 8-bit 6502 machine popular in Croatia |
31 |
|
32 |
=cut |
33 |
|
34 |
=head1 FUNCTIONS |
35 |
|
36 |
=head2 boot |
37 |
|
38 |
Start emulator, open L<Screen>, load initial ROM images, and render memory |
39 |
|
40 |
my $orao = Orao->new({}); |
41 |
$orao->boot; |
42 |
|
43 |
=cut |
44 |
|
45 |
our $orao; |
46 |
|
47 |
select(STDERR); $| = 1; |
48 |
|
49 |
sub boot { |
50 |
my $self = shift; |
51 |
warn "Orao calling upstream init\n"; |
52 |
$self->SUPER::init( |
53 |
read => sub { $self->read( @_ ) }, |
54 |
write => sub { $self->write( @_ ) }, |
55 |
); |
56 |
|
57 |
warn "Orao $Orao::VERSION emulation starting\n"; |
58 |
|
59 |
warn "emulating ", $#mem, " bytes of memory\n"; |
60 |
|
61 |
$self->open_screen; |
62 |
$self->load_rom({ |
63 |
0x1000 => 'dump/SCRINV.BIN', |
64 |
# should be 0x6000, but oraoemu has 2 byte prefix |
65 |
0x5FFE => 'dump/screen.dmp', |
66 |
# 0xC000 => 'rom/BAS12.ROM', |
67 |
# 0xE000 => 'rom/CRT12.ROM', |
68 |
0xC000 => 'rom/BAS13.ROM', |
69 |
0xE000 => 'rom/CRT13.ROM', |
70 |
}); |
71 |
|
72 |
# $PC = 0xDD11; # BC |
73 |
# $PC = 0xC274; # MC |
74 |
|
75 |
$PC = 0xff89; |
76 |
|
77 |
$orao = $self; |
78 |
|
79 |
# $self->prompt( 0x1000 ); |
80 |
|
81 |
my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
82 |
$self->trace( 0 ); |
83 |
$self->debug( 0 ); |
84 |
|
85 |
warn "rendering video memory\n"; |
86 |
$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
87 |
|
88 |
if ( $self->show_mem ) { |
89 |
|
90 |
warn "rendering memory map\n"; |
91 |
|
92 |
$self->render_mem( @mem ); |
93 |
|
94 |
my @mmap = ( |
95 |
0x0000, 0x03FF, 'nulti blok', |
96 |
0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
97 |
0x6000, 0x7FFF, 'video RAM', |
98 |
0x8000, 0x9FFF, 'sistemske lokacije', |
99 |
0xA000, 0xAFFF, 'ekstenzija', |
100 |
0xB000, 0xBFFF, 'DOS', |
101 |
0xC000, 0xDFFF, 'BASIC ROM', |
102 |
0xE000, 0xFFFF, 'sistemski ROM', |
103 |
); |
104 |
|
105 |
} |
106 |
$self->sync; |
107 |
$self->trace( $trace ); |
108 |
$self->debug( $debug ); |
109 |
|
110 |
#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
111 |
|
112 |
warn "Orao boot finished", |
113 |
$self->trace ? ' trace' : '', |
114 |
$self->debug ? ' debug' : '', |
115 |
"\n"; |
116 |
|
117 |
M6502::reset(); |
118 |
|
119 |
$self->booted( 1 ); |
120 |
} |
121 |
|
122 |
=head2 run |
123 |
|
124 |
Run interactive emulation loop |
125 |
|
126 |
$orao->run; |
127 |
|
128 |
=cut |
129 |
|
130 |
sub run { |
131 |
my $self = shift; |
132 |
|
133 |
$self->boot if ( ! $self->booted ); |
134 |
$self->loop; |
135 |
}; |
136 |
|
137 |
=head1 Helper functions |
138 |
|
139 |
=head2 load_rom |
140 |
|
141 |
called to init memory and load initial rom images |
142 |
|
143 |
$orao->load_rom; |
144 |
|
145 |
=cut |
146 |
|
147 |
sub load_rom { |
148 |
my ($self, $loaded_files) = @_; |
149 |
|
150 |
#my $time_base = time(); |
151 |
|
152 |
foreach my $addr ( sort keys %$loaded_files ) { |
153 |
my $path = $loaded_files->{$addr}; |
154 |
$self->load_image( $path, $addr ); |
155 |
} |
156 |
} |
157 |
|
158 |
# write chunk directly into memory, updateing vram if needed |
159 |
sub _write_chunk { |
160 |
my $self = shift; |
161 |
my ( $addr, $chunk ) = @_; |
162 |
$self->write_chunk( $addr, $chunk ); |
163 |
my $end = $addr + length($chunk); |
164 |
my ( $f, $t ) = ( 0x6000, 0x7fff ); |
165 |
|
166 |
if ( $end < $f || $addr >= $t ) { |
167 |
warn "skip vram update\n"; |
168 |
return; |
169 |
}; |
170 |
|
171 |
$f = $addr if ( $addr > $f ); |
172 |
$t = $end if ( $end < $t ); |
173 |
|
174 |
warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
175 |
$self->render_vram( @mem[ 0x6000 .. 0x7fff ] ); |
176 |
$self->render_mem( @mem ) if $self->show_mem; |
177 |
} |
178 |
|
179 |
=head2 load_image |
180 |
|
181 |
Load binary files, ROM images and Orao Emulator files |
182 |
|
183 |
$orao->load_image( '/path/to/file', 0x1000 ); |
184 |
|
185 |
Returns true on success. |
186 |
|
187 |
=cut |
188 |
|
189 |
sub load_image { |
190 |
my $self = shift; |
191 |
my ( $path, $addr ) = @_; |
192 |
|
193 |
if ( ! -e $path ) { |
194 |
warn "ERROR: file $path doesn't exist\n"; |
195 |
return; |
196 |
} |
197 |
|
198 |
my $size = -s $path || confess "no size for $path: $!"; |
199 |
|
200 |
my $buff = read_file( $path ); |
201 |
|
202 |
if ( $size == 65538 ) { |
203 |
$addr = 0; |
204 |
warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
205 |
$self->_write_chunk( $addr, substr($buff,2) ); |
206 |
return 1; |
207 |
} elsif ( $size == 32800 ) { |
208 |
$addr = 0; |
209 |
warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
210 |
$self->_write_chunk( $addr, substr($buff,0x20) ); |
211 |
return 1; |
212 |
} |
213 |
printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
214 |
$self->_write_chunk( $addr, $buff ); |
215 |
return 1; |
216 |
|
217 |
my $chunk; |
218 |
|
219 |
my $pos = 0; |
220 |
|
221 |
while ( my $long = substr($buff,$pos,4) ) { |
222 |
my @b = split(//, $long, 4); |
223 |
$chunk .= |
224 |
( $b[3] || '' ) . |
225 |
( $b[2] || '' ) . |
226 |
( $b[1] || '' ) . |
227 |
( $b[0] || '' ); |
228 |
$pos += 4; |
229 |
} |
230 |
|
231 |
$self->_write_chunk( $addr, $chunk ); |
232 |
|
233 |
return 1; |
234 |
}; |
235 |
|
236 |
=head2 save_dump |
237 |
|
238 |
$orao->save_dump( 'filename', $from, $to ); |
239 |
|
240 |
=cut |
241 |
|
242 |
sub save_dump { |
243 |
my $self = shift; |
244 |
|
245 |
my ( $path, $from, $to ) = @_; |
246 |
|
247 |
$from ||= 0; |
248 |
$to ||= 0xffff; |
249 |
|
250 |
open(my $fh, '>', $path) || die "can't open $path: $!"; |
251 |
print $fh $self->read_chunk( $from, $to ); |
252 |
close($fh); |
253 |
|
254 |
my $size = -s $path; |
255 |
warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
256 |
} |
257 |
|
258 |
=head2 hexdump |
259 |
|
260 |
$orao->hexdump( $address ); |
261 |
|
262 |
=cut |
263 |
|
264 |
sub hexdump { |
265 |
my $self = shift; |
266 |
my $a = shift; |
267 |
return sprintf(" %04x %s\n", $a, |
268 |
join(" ", |
269 |
map { |
270 |
if ( defined($_) ) { |
271 |
sprintf( "%02x", $_ ) |
272 |
} else { |
273 |
' ' |
274 |
} |
275 |
} @mem[ $a .. $a+8 ] |
276 |
) |
277 |
); |
278 |
} |
279 |
|
280 |
=head1 Memory management |
281 |
|
282 |
Orao implements all I/O using mmap addresses. This was main reason why |
283 |
L<Acme::6502> was just too slow to handle it. |
284 |
|
285 |
=cut |
286 |
|
287 |
=head2 read |
288 |
|
289 |
Read from memory |
290 |
|
291 |
$byte = read( $address ); |
292 |
|
293 |
=cut |
294 |
|
295 |
my $keyboard_none = 255; |
296 |
|
297 |
my $keyboard = { |
298 |
0x87FC => { |
299 |
'right' => 16, |
300 |
'down' => 128, |
301 |
'up' => 192, |
302 |
'left' => 224, |
303 |
'backspace' => 224, |
304 |
}, |
305 |
0x87FD => sub { |
306 |
my ( $self, $key ) = @_; |
307 |
if ( $key eq 'return' ) { |
308 |
M6502::_write( 0xfc, 13 ); |
309 |
warn "return\n"; |
310 |
return 0; |
311 |
} elsif ( $key =~ m/ ctrl/ || $self->key_down( 'left ctrl' ) || $self->key_down( 'right ctrl' ) ) { |
312 |
warn "ctrl\n"; |
313 |
return 16; |
314 |
} |
315 |
return $keyboard_none; |
316 |
}, |
317 |
0x87FA => { |
318 |
'f4' => 16, |
319 |
'f3' => 128, |
320 |
'f2' => 192, |
321 |
'f1' => 224, |
322 |
}, |
323 |
0x87FB => sub { |
324 |
my ( $self, $key ) = @_; |
325 |
if ( $key eq 'space' ) { |
326 |
return 32; |
327 |
} elsif ( $self->key_down( 'left shift' ) || $self->key_down( 'right shift' ) ) { |
328 |
warn "shift\n"; |
329 |
return 16; |
330 |
} |
331 |
return $keyboard_none; |
332 |
}, |
333 |
0x87F6 => { |
334 |
'6' => 16, |
335 |
't' => 128, |
336 |
'y' => 192, # hr: z |
337 |
'r' => 224, |
338 |
}, |
339 |
0x87F7 => { |
340 |
'5' => 32, |
341 |
'4' => 16, |
342 |
}, |
343 |
0x87EE => { |
344 |
'7' => 16, |
345 |
'u' => 128, |
346 |
'i' => 192, |
347 |
'o' => 224, |
348 |
}, |
349 |
0x87EF => { |
350 |
'8' => 32, |
351 |
'9' => 16, |
352 |
}, |
353 |
0x87DE => { |
354 |
'1' => 16, |
355 |
'w' => 128, |
356 |
'q' => 192, |
357 |
'e' => 224, |
358 |
}, |
359 |
0x87DF => { |
360 |
'2' => 32, |
361 |
'3' => 16, |
362 |
}, |
363 |
0x87BE => { |
364 |
'm' => 16, |
365 |
'k' => 128, |
366 |
'j' => 192, |
367 |
'l' => 224, |
368 |
}, |
369 |
0x87BF => { |
370 |
',' => 32, # < |
371 |
'.' => 16, # > |
372 |
}, |
373 |
0x877E => { |
374 |
'z' => 16, # hr:y |
375 |
's' => 128, |
376 |
'a' => 192, |
377 |
'd' => 224, |
378 |
}, |
379 |
0x877F => { |
380 |
'x' => 32, |
381 |
'c' => 16, |
382 |
}, |
383 |
0x86FE => { |
384 |
'n' => 16, |
385 |
'g' => 128, |
386 |
'h' => 192, |
387 |
'f' => 224, |
388 |
}, |
389 |
0x86FF => { |
390 |
'b' => 32, |
391 |
'v' => 16, |
392 |
}, |
393 |
0x85FE => { |
394 |
'<' => 16, # : |
395 |
'\\' => 128, # ¾ |
396 |
'\'' => 192, # æ |
397 |
';' => 224, # è |
398 |
}, |
399 |
0x85FF => { |
400 |
'/' => 32, |
401 |
'f11' => 16, # ^ |
402 |
}, |
403 |
0x83FE => { |
404 |
'f12' => 16, # ; |
405 |
'[' => 128, # ¹ |
406 |
']' => 192, # ð |
407 |
'p' => 224, |
408 |
}, |
409 |
0x83FF => { |
410 |
'-' => 32, |
411 |
'0' => 16, |
412 |
}, |
413 |
}; |
414 |
|
415 |
sub read { |
416 |
my $self = shift; |
417 |
my ($addr) = @_; |
418 |
my $byte = $mem[$addr]; |
419 |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
420 |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
421 |
|
422 |
# keyboard |
423 |
|
424 |
if ( defined( $keyboard->{$addr} ) ) { |
425 |
warn sprintf("keyboard port: %04x\n",$addr) if $self->trace; |
426 |
my $key = $self->key_pressed; |
427 |
if ( defined($key) ) { |
428 |
my $ret = $keyboard_none; |
429 |
my $r = $keyboard->{$addr} || confess "no definition for keyboard port found"; |
430 |
if ( ref($r) eq 'CODE' ) { |
431 |
$ret = $r->($self, $key); |
432 |
} elsif ( defined($r->{$key}) ) { |
433 |
$ret = $r->{$key}; |
434 |
if ( ref($ret) eq 'CODE' ) { |
435 |
$ret = $ret->($self); |
436 |
} |
437 |
} else { |
438 |
warn sprintf("keyboard port: %04x unknown key: '%s'\n", $addr, $key) if $debug; |
439 |
} |
440 |
warn sprintf("keyboard port: %04x key:%s code:%d\n",$addr,$key,$ret) if ( $ret != $keyboard_none ); |
441 |
return $ret; |
442 |
} |
443 |
return $keyboard_none; |
444 |
} |
445 |
|
446 |
if ( $addr == 0x87ff ) { |
447 |
return $self->read_tape; |
448 |
} |
449 |
|
450 |
$self->mmap_pixel( $addr, 0, $byte, 0 ); |
451 |
return $byte; |
452 |
} |
453 |
|
454 |
=head2 write |
455 |
|
456 |
Write into emory |
457 |
|
458 |
write( $address, $byte ); |
459 |
|
460 |
=cut |
461 |
|
462 |
sub write { |
463 |
my $self = shift; |
464 |
my ($addr,$byte) = @_; |
465 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
466 |
|
467 |
if ( $addr == 0x8800 ) { |
468 |
warn sprintf "sound ignored: %x\n", $byte; |
469 |
} |
470 |
|
471 |
if ( $addr > 0xafff ) { |
472 |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
473 |
} |
474 |
|
475 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
476 |
|
477 |
$mem[$addr] = $byte; |
478 |
return; |
479 |
} |
480 |
|
481 |
=head1 Command Line |
482 |
|
483 |
Command-line debugging intrerface is implemented for communication with |
484 |
emulated device |
485 |
|
486 |
=head2 prompt |
487 |
|
488 |
my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
489 |
|
490 |
=cut |
491 |
|
492 |
my $last = 'r 1'; |
493 |
|
494 |
sub prompt { |
495 |
my $self = shift; |
496 |
$self->app->sync; |
497 |
my $a = shift; |
498 |
print $self->hexdump( $a ), |
499 |
$last ? "[$last] " : '', |
500 |
"> "; |
501 |
my $in = <STDIN>; |
502 |
chomp($in); |
503 |
warn "## prompt got: $in\n" if $self->debug; |
504 |
$in ||= $last; |
505 |
$last = $in; |
506 |
return ( $in, split(/\s+/, $in) ) if $in; |
507 |
} |
508 |
|
509 |
=head2 cli |
510 |
|
511 |
$orao->cli(); |
512 |
|
513 |
=cut |
514 |
|
515 |
my $show_R = 0; |
516 |
|
517 |
sub cli { |
518 |
my $self = shift; |
519 |
my $a = $PC || confess "no pc?"; |
520 |
my $run_for = 0; |
521 |
warn $self->dump_R() if $show_R; |
522 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
523 |
my $c = shift @v; |
524 |
next unless defined($c); |
525 |
my $v = shift @v; |
526 |
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
527 |
@v = map { hex($_) } @v; |
528 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
529 |
if ( $c =~ m/^[qx]/i ) { |
530 |
exit; |
531 |
} elsif ( $c eq '?' ) { |
532 |
my $t = $self->trace ? 'on' : 'off' ; |
533 |
my $d = $self->debug ? 'on' : 'off' ; |
534 |
warn <<__USAGE__; |
535 |
Usage: |
536 |
|
537 |
x|q\t\texit |
538 |
e 6000 6010\tdump memory, +/- to walk forward/backward |
539 |
m 1000 ff 00\tput ff 00 on 1000 |
540 |
j|u 1000\t\tjump (change pc) |
541 |
r 42\t\trun 42 instruction opcodes |
542 |
t\t\ttrace [$t] |
543 |
d\t\tdebug [$d] |
544 |
|
545 |
__USAGE__ |
546 |
warn $self->dump_R; |
547 |
$last = ''; |
548 |
} elsif ( $c =~ m/^e/i ) { |
549 |
$a = $v if defined($v); |
550 |
my $to = shift @v; |
551 |
$to = $a + 32 if ( ! $to || $to <= $a ); |
552 |
$to = 0xffff if ( $to > 0xffff ); |
553 |
my $lines = int( ($to - $a + 8) / 8 ); |
554 |
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
555 |
while ( --$lines ) { |
556 |
print $self->hexdump( $a ); |
557 |
$a += 8; |
558 |
} |
559 |
$last = '+'; |
560 |
$show_R = 0; |
561 |
} elsif ( $c =~ m/^\+/ ) { |
562 |
$a += 8; |
563 |
$show_R = 0; |
564 |
} elsif ( $c =~ m/^\-/ ) { |
565 |
$a -= 8; |
566 |
$show_R = 0; |
567 |
} elsif ( $c =~ m/^m/i ) { |
568 |
$a = $v if defined($v); |
569 |
$self->poke_code( $a, @v ); |
570 |
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
571 |
$last = '+'; |
572 |
$show_R = 0; |
573 |
} elsif ( $c =~ m/^l/i ) { |
574 |
my $to = shift @v || 0x1000; |
575 |
$a = $to; |
576 |
$self->load_image( $v, $a ); |
577 |
$last = ''; |
578 |
} elsif ( $c =~ m/^s/i ) { |
579 |
$self->save_dump( $v || 'mem.dump', @v ); |
580 |
$last = ''; |
581 |
} elsif ( $c =~ m/^r/i ) { |
582 |
$run_for = $v || 1; |
583 |
print "run_for $run_for instructions\n"; |
584 |
$show_R = 1; |
585 |
last; |
586 |
} elsif ( $c =~ m/^(u|j)/i ) { |
587 |
my $to = $v || $a; |
588 |
printf "set pc to %04x\n", $to; |
589 |
$PC = $to; # remember for restart |
590 |
$run_for = 1; |
591 |
$last = "r $run_for"; |
592 |
$show_R = 1; |
593 |
last; |
594 |
} elsif ( $c =~ m/^tape/ ) { |
595 |
if ( ! $v ) { |
596 |
warn "ERROR: please specify tape name!\n"; |
597 |
} elsif ( ! -e $v ) { |
598 |
warn "ERROR: tape $v: $!\n"; |
599 |
} else { |
600 |
$self->load_tape( $v ); |
601 |
} |
602 |
$last = ''; |
603 |
} elsif ( $c =~ m/^t/i ) { |
604 |
$self->trace( not $self->trace ); |
605 |
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
606 |
$last = ''; |
607 |
} elsif ( $c =~ m/^d/i ) { |
608 |
$self->debug( not $self->debug ); |
609 |
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
610 |
$last = ''; |
611 |
} else { |
612 |
warn "# ignored $line\n" if ($line); |
613 |
$last = ''; |
614 |
} |
615 |
} |
616 |
|
617 |
return $run_for; |
618 |
} |
619 |
|
620 |
=head1 AUTHOR |
621 |
|
622 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
623 |
|
624 |
=head1 BUGS |
625 |
|
626 |
=head1 ACKNOWLEDGEMENTS |
627 |
|
628 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
629 |
info about this machine (and even hardware implementation from 2007). |
630 |
|
631 |
=head1 COPYRIGHT & LICENSE |
632 |
|
633 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
634 |
|
635 |
This program is free software; you can redistribute it and/or modify it |
636 |
under the same terms as Perl itself. |
637 |
|
638 |
=cut |
639 |
|
640 |
1; # End of Orao |