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(run_for)); |
16 |
|
17 |
=head1 NAME |
18 |
|
19 |
Orao - Orao emulator |
20 |
|
21 |
=head1 VERSION |
22 |
|
23 |
Version 0.03 |
24 |
|
25 |
=cut |
26 |
|
27 |
our $VERSION = '0.03'; |
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 |
=head2 boot |
43 |
|
44 |
Start emulator, open L<Screen>, load initial ROM images, and render memory |
45 |
|
46 |
my $orao = Orao->new({}); |
47 |
$orao->boot; |
48 |
|
49 |
=cut |
50 |
|
51 |
our $orao; |
52 |
|
53 |
select(STDERR); $| = 1; |
54 |
|
55 |
sub boot { |
56 |
my $self = shift; |
57 |
warn "Orao calling upstream init\n"; |
58 |
$self->SUPER::init( |
59 |
read => sub { $self->read( @_ ) }, |
60 |
write => sub { $self->write( @_ ) }, |
61 |
); |
62 |
|
63 |
warn "Orao $Orao::VERSION emulation starting\n"; |
64 |
|
65 |
warn "emulating ", $#mem, " bytes of memory\n"; |
66 |
|
67 |
$self->open_screen; |
68 |
$self->load_rom({ |
69 |
0x1000 => 'dump/SCRINV.BIN', |
70 |
# should be 0x6000, but oraoemu has 2 byte prefix |
71 |
0x5FFE => 'dump/screen.dmp', |
72 |
0xC000 => 'rom/BAS12.ROM', |
73 |
0xE000 => 'rom/CRT12.ROM', |
74 |
}); |
75 |
|
76 |
# $PC = 0xDD11; # BC |
77 |
# $PC = 0xC274; # MC |
78 |
|
79 |
$PC = 0xff89; |
80 |
|
81 |
$orao = $self; |
82 |
|
83 |
# $self->prompt( 0x1000 ); |
84 |
|
85 |
my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
86 |
$self->trace( 0 ); |
87 |
$self->debug( 0 ); |
88 |
|
89 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
90 |
|
91 |
if ( $self->show_mem ) { |
92 |
|
93 |
warn "rendering memory map\n"; |
94 |
|
95 |
$self->render_mem( @mem ); |
96 |
|
97 |
my @mmap = ( |
98 |
0x0000, 0x03FF, 'nulti blok', |
99 |
0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
100 |
0x6000, 0x7FFF, 'video RAM', |
101 |
0x8000, 0x9FFF, 'sistemske lokacije', |
102 |
0xA000, 0xAFFF, 'ekstenzija', |
103 |
0xB000, 0xBFFF, 'DOS', |
104 |
0xC000, 0xDFFF, 'BASIC ROM', |
105 |
0xE000, 0xFFFF, 'sistemski ROM', |
106 |
); |
107 |
|
108 |
} else { |
109 |
|
110 |
warn "rendering video memory\n"; |
111 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
112 |
|
113 |
} |
114 |
$self->sync; |
115 |
$self->trace( $trace ); |
116 |
$self->debug( $debug ); |
117 |
|
118 |
#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
119 |
|
120 |
warn "Orao boot finished", |
121 |
$self->trace ? ' trace' : '', |
122 |
$self->debug ? ' debug' : '', |
123 |
"\n"; |
124 |
|
125 |
M6502::reset(); |
126 |
|
127 |
} |
128 |
|
129 |
=head2 load_rom |
130 |
|
131 |
called to init memory and load initial rom images |
132 |
|
133 |
$orao->load_rom; |
134 |
|
135 |
=cut |
136 |
|
137 |
sub load_rom { |
138 |
my ($self, $loaded_files) = @_; |
139 |
|
140 |
#my $time_base = time(); |
141 |
|
142 |
foreach my $addr ( sort keys %$loaded_files ) { |
143 |
my $path = $loaded_files->{$addr}; |
144 |
$self->load_oraoemu( $path, $addr ); |
145 |
} |
146 |
} |
147 |
|
148 |
# write chunk directly into memory, updateing vram if needed |
149 |
sub _write_chunk { |
150 |
my $self = shift; |
151 |
my ( $addr, $chunk ) = @_; |
152 |
$self->write_chunk( $addr, $chunk ); |
153 |
my $end = $addr + length($chunk); |
154 |
my ( $f, $t ) = ( 0x6000, 0x7fff ); |
155 |
|
156 |
if ( $end < $f || $addr >= $t ) { |
157 |
warn "skip vram update\n"; |
158 |
return; |
159 |
}; |
160 |
|
161 |
$f = $addr if ( $addr > $f ); |
162 |
$t = $end if ( $end < $t ); |
163 |
|
164 |
warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
165 |
# foreach my $a ( $f .. $t ) { |
166 |
# $self->vram( $a - 0x6000 , $mem[ $a ] ); |
167 |
# } |
168 |
$self->render( @mem[ 0x6000 .. 0x7fff ] ); |
169 |
$self->render_mem( @mem ) if $self->show_mem; |
170 |
} |
171 |
|
172 |
=head2 load_oraoemu |
173 |
|
174 |
Load binary files, ROM images and Orao Emulator files |
175 |
|
176 |
$orao->load_oraoemu( '/path/to/file', 0x1000 ); |
177 |
|
178 |
Returns true on success. |
179 |
|
180 |
=cut |
181 |
|
182 |
sub load_oraoemu { |
183 |
my $self = shift; |
184 |
my ( $path, $addr ) = @_; |
185 |
|
186 |
if ( ! -e $path ) { |
187 |
warn "ERROR: file $path doesn't exist\n"; |
188 |
return; |
189 |
} |
190 |
|
191 |
my $size = -s $path || confess "no size for $path: $!"; |
192 |
|
193 |
my $buff = read_file( $path ); |
194 |
|
195 |
if ( $size == 65538 ) { |
196 |
$addr = 0; |
197 |
warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
198 |
$self->_write_chunk( $addr, substr($buff,2) ); |
199 |
return 1; |
200 |
} elsif ( $size == 32800 ) { |
201 |
$addr = 0; |
202 |
warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
203 |
$self->_write_chunk( $addr, substr($buff,0x20) ); |
204 |
return 1; |
205 |
} |
206 |
printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
207 |
$self->_write_chunk( $addr, $buff ); |
208 |
return 1; |
209 |
|
210 |
my $chunk; |
211 |
|
212 |
my $pos = 0; |
213 |
|
214 |
while ( my $long = substr($buff,$pos,4) ) { |
215 |
my @b = split(//, $long, 4); |
216 |
$chunk .= |
217 |
( $b[3] || '' ) . |
218 |
( $b[2] || '' ) . |
219 |
( $b[1] || '' ) . |
220 |
( $b[0] || '' ); |
221 |
$pos += 4; |
222 |
} |
223 |
|
224 |
$self->_write_chunk( $addr, $chunk ); |
225 |
|
226 |
return 1; |
227 |
}; |
228 |
|
229 |
=head2 save_dump |
230 |
|
231 |
$orao->save_dump( 'filename', $from, $to ); |
232 |
|
233 |
=cut |
234 |
|
235 |
sub save_dump { |
236 |
my $self = shift; |
237 |
|
238 |
my ( $path, $from, $to ) = @_; |
239 |
|
240 |
$from ||= 0; |
241 |
$to ||= 0xffff; |
242 |
|
243 |
open(my $fh, '>', $path) || die "can't open $path: $!"; |
244 |
print $fh $self->read_chunk( $from, $to ); |
245 |
close($fh); |
246 |
|
247 |
my $size = -s $path; |
248 |
warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
249 |
} |
250 |
|
251 |
=head2 hexdump |
252 |
|
253 |
$orao->hexdump( $address ); |
254 |
|
255 |
=cut |
256 |
|
257 |
sub hexdump { |
258 |
my $self = shift; |
259 |
my $a = shift; |
260 |
return sprintf(" %04x %s\n", $a, |
261 |
join(" ", |
262 |
map { |
263 |
if ( defined($_) ) { |
264 |
sprintf( "%02x", $_ ) |
265 |
} else { |
266 |
' ' |
267 |
} |
268 |
} @mem[ $a .. $a+8 ] |
269 |
) |
270 |
); |
271 |
} |
272 |
|
273 |
=head1 Memory management |
274 |
|
275 |
Orao implements all I/O using mmap addresses. This was main reason why |
276 |
L<Acme::6502> was just too slow to handle it. |
277 |
|
278 |
=cut |
279 |
|
280 |
=head2 read |
281 |
|
282 |
Read from memory |
283 |
|
284 |
$byte = read( $address ); |
285 |
|
286 |
=cut |
287 |
|
288 |
sub read { |
289 |
my $self = shift; |
290 |
my ($addr) = @_; |
291 |
my $byte = $mem[$addr]; |
292 |
confess sprintf("can't find memory at address %04x",$addr) unless defined($byte); |
293 |
warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
294 |
|
295 |
# keyboard |
296 |
|
297 |
if ( first { $addr == $_ } @kbd_ports ) { |
298 |
warn sprintf("keyboard port: %04x\n",$addr); |
299 |
} elsif ( $addr == 0x87fc ) { |
300 |
warn "0x87fc - arrows/back\n"; |
301 |
=for pascal |
302 |
if VKey=VK_RIGHT then Result:=16; |
303 |
if VKey=VK_DOWN then Result:=128; |
304 |
if VKey=VK_UP then Result:=192; |
305 |
if VKey=VK_LEFT then Result:=224; |
306 |
if Ord(KeyPressed)=VK_BACK then Result:=224; |
307 |
=cut |
308 |
} elsif ( $addr == 0x87fd ) { |
309 |
warn "0x87fd - enter\n"; |
310 |
=for pascal |
311 |
if KeyPressed=Chr(13) then begin |
312 |
Mem[$FC]:=13; |
313 |
Result:=0; |
314 |
end; |
315 |
=cut |
316 |
} elsif ( $addr == 0x87fa ) { |
317 |
warn "0x87fa = F1 - F4\n"; |
318 |
=for pascal |
319 |
if VKey=VK_F4 then Result:=16; |
320 |
if VKey=VK_F3 then Result:=128; |
321 |
if VKey=VK_F2 then Result:=192; |
322 |
if VKey=VK_F1 then Result:=224; |
323 |
=cut |
324 |
} elsif ( $addr == 0x87fb ) { |
325 |
warn "0x87fb\n"; |
326 |
=for pascal |
327 |
if KeyPressed=Chr(32) then Result:=32; |
328 |
if KeyPressed='"' then Result:=16; |
329 |
if KeyPressed='!' then Result:=16; |
330 |
if KeyPressed='$' then Result:=16; |
331 |
if KeyPressed='%' then Result:=16; |
332 |
if KeyPressed='&' then Result:=16; |
333 |
if KeyPressed='(' then Result:=16; |
334 |
if KeyPressed=')' then Result:=16; |
335 |
if KeyPressed='=' then Result:=16; |
336 |
if KeyPressed='#' then Result:=16; |
337 |
if KeyPressed='+' then Result:=16; |
338 |
if KeyPressed='*' then Result:=16; |
339 |
if KeyPressed='?' then Result:=16; |
340 |
if KeyPressed='<' then Result:=16; |
341 |
if KeyPressed='>' then Result:=16; |
342 |
if VKey=191 then Result:=16; |
343 |
=cut |
344 |
} |
345 |
|
346 |
$self->mmap_pixel( $addr, 0, $byte, 0 ); |
347 |
return $byte; |
348 |
} |
349 |
|
350 |
=head2 write |
351 |
|
352 |
Write into emory |
353 |
|
354 |
write( $address, $byte ); |
355 |
|
356 |
=cut |
357 |
|
358 |
sub write { |
359 |
my $self = shift; |
360 |
my ($addr,$byte) = @_; |
361 |
warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
362 |
|
363 |
if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
364 |
$self->vram( $addr - 0x6000 , $byte ); |
365 |
} |
366 |
|
367 |
if ( $addr == 0x8800 ) { |
368 |
warn sprintf "sound ignored: %x\n", $byte; |
369 |
} |
370 |
|
371 |
if ( $addr > 0xafff ) { |
372 |
confess sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
373 |
} |
374 |
|
375 |
$self->mmap_pixel( $addr, $byte, 0, 0 ); |
376 |
|
377 |
$mem[$addr] = $byte; |
378 |
return; |
379 |
} |
380 |
|
381 |
=head1 Command Line |
382 |
|
383 |
Command-line debugging intrerface is implemented for communication with |
384 |
emulated device |
385 |
|
386 |
=head2 prompt |
387 |
|
388 |
my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
389 |
|
390 |
=cut |
391 |
|
392 |
my $last = 'r 1'; |
393 |
|
394 |
sub prompt { |
395 |
my $self = shift; |
396 |
$self->app->sync; |
397 |
my $a = shift; |
398 |
print STDERR $self->hexdump( $a ), |
399 |
$last ? "[$last] " : '', |
400 |
"> "; |
401 |
my $in = <STDIN>; |
402 |
chomp($in); |
403 |
warn "## prompt got: $in\n" if $self->debug; |
404 |
$in ||= $last; |
405 |
$last = $in; |
406 |
return ( $in, split(/\s+/, $in) ) if $in; |
407 |
} |
408 |
|
409 |
=head2 cli |
410 |
|
411 |
$orao->cli(); |
412 |
|
413 |
=cut |
414 |
|
415 |
my $show_R = 0; |
416 |
|
417 |
sub cli { |
418 |
my $self = shift; |
419 |
my $a = $PC || confess "no pc?"; |
420 |
warn $self->dump_R() if $show_R; |
421 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
422 |
my $c = shift @v; |
423 |
next unless defined($c); |
424 |
my $v = shift @v; |
425 |
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
426 |
@v = map { hex($_) } @v; |
427 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
428 |
if ( $c =~ m/^[qx]/i ) { |
429 |
exit; |
430 |
} elsif ( $c eq '?' ) { |
431 |
my $t = $self->trace ? 'on' : 'off' ; |
432 |
my $d = $self->debug ? 'on' : 'off' ; |
433 |
warn <<__USAGE__; |
434 |
Usage: |
435 |
|
436 |
x|q\t\texit |
437 |
e 6000 6010\tdump memory, +/- to walk forward/backward |
438 |
m 1000 ff 00\tput ff 00 on 1000 |
439 |
j|u 1000\t\tjump (change pc) |
440 |
r 42\t\trun 42 instruction opcodes |
441 |
t\t\ttrace [$t] |
442 |
d\t\tdebug [$d] |
443 |
|
444 |
__USAGE__ |
445 |
warn $self->dump_R; |
446 |
} elsif ( $c =~ m/^e/i ) { |
447 |
$a = $v if defined($v); |
448 |
my $to = shift @v; |
449 |
$to = $a + 32 if ( ! $to || $to <= $a ); |
450 |
$to = 0xffff if ( $to > 0xffff ); |
451 |
my $lines = int( ($to - $a + 8) / 8 ); |
452 |
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
453 |
while ( --$lines ) { |
454 |
print $self->hexdump( $a ); |
455 |
$a += 8; |
456 |
} |
457 |
$last = '+'; |
458 |
$show_R = 0; |
459 |
} elsif ( $c =~ m/^\+/ ) { |
460 |
$a += 8; |
461 |
$show_R = 0; |
462 |
} elsif ( $c =~ m/^\-/ ) { |
463 |
$a -= 8; |
464 |
$show_R = 0; |
465 |
} elsif ( $c =~ m/^m/i ) { |
466 |
$a = $v if defined($v); |
467 |
$self->poke_code( $a, @v ); |
468 |
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
469 |
$last = '+'; |
470 |
$show_R = 0; |
471 |
} elsif ( $c =~ m/^l/i ) { |
472 |
my $to = shift @v || 0x1000; |
473 |
$a = $to; |
474 |
$self->load_oraoemu( $v, $a ); |
475 |
$last = ''; |
476 |
} elsif ( $c =~ m/^s/i ) { |
477 |
$self->save_dump( $v || 'mem.dump', @v ); |
478 |
$last = ''; |
479 |
} elsif ( $c =~ m/^r/i ) { |
480 |
$run_for = $v || 1; |
481 |
print "run_for $run_for instructions\n"; |
482 |
$show_R = 1; |
483 |
last; |
484 |
} elsif ( $c =~ m/^(u|j)/ ) { |
485 |
my $to = $v || $a; |
486 |
printf "set pc to %04x\n", $to; |
487 |
$PC = $to; # remember for restart |
488 |
$run_for = 1; |
489 |
$last = "r $run_for"; |
490 |
$show_R = 1; |
491 |
last; |
492 |
} elsif ( $c =~ m/^t/ ) { |
493 |
$self->trace( not $self->trace ); |
494 |
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
495 |
$last = ''; |
496 |
} elsif ( $c =~ m/^d/ ) { |
497 |
$self->debug( not $self->debug ); |
498 |
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
499 |
$last = ''; |
500 |
} else { |
501 |
warn "# ignored $line\n" if ($line); |
502 |
$last = ''; |
503 |
} |
504 |
} |
505 |
|
506 |
} |
507 |
|
508 |
=head1 AUTHOR |
509 |
|
510 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
511 |
|
512 |
=head1 BUGS |
513 |
|
514 |
=head1 ACKNOWLEDGEMENTS |
515 |
|
516 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
517 |
info about this machine (and even hardware implementation from 2007). |
518 |
|
519 |
=head1 COPYRIGHT & LICENSE |
520 |
|
521 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
522 |
|
523 |
This program is free software; you can redistribute it and/or modify it |
524 |
under the same terms as Perl itself. |
525 |
|
526 |
=cut |
527 |
|
528 |
1; # End of Orao |