/[VRac]/Galaksija.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /Galaksija.pm

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Revision 178 - (hide annotations)
Sat Sep 29 12:07:12 2007 UTC (12 years ago) by dpavlin
File size: 5803 byte(s)
more debugging and some stats about speed using Time::HiRes
1 dpavlin 130 package Galaksija;
2    
3     use warnings;
4     use strict;
5    
6     use Carp qw/confess/;
7     use File::Slurp;
8     use Data::Dump qw/dump/;
9 dpavlin 165 use Z80;
10     use Screen;
11 dpavlin 178 use Time::HiRes qw/time/;
12 dpavlin 130
13 dpavlin 163 use base qw(Class::Accessor VRac Z80 Screen Prefs Session);
14 dpavlin 130 __PACKAGE__->mk_accessors(qw(booted));
15    
16     =head1 NAME
17    
18     Galaksija - Galaksija emulator
19    
20     =head1 VERSION
21    
22 dpavlin 163 Version 0.01
23 dpavlin 130
24     =cut
25    
26 dpavlin 163 our $VERSION = '0.01';
27 dpavlin 130
28     =head1 SUMMARY
29    
30     Emulator of Galaksija 8-bit Z80 machine popular in former Yugoslavia
31    
32     =cut
33    
34     =head1 FUNCTIONS
35    
36     =head2 run
37    
38     =cut
39    
40     our $emu;
41    
42     sub run {
43     my $self = shift;
44 dpavlin 131
45     warn "Galaksija $Galaksija::VERSION emulation starting\n";
46    
47     $self->show_mem( 1 );
48 dpavlin 137 #$self->trace( 1 );
49 dpavlin 131
50 dpavlin 130 $self->SUPER::init(
51     read => sub { $self->read( @_ ) },
52     write => sub { $self->write( @_ ) },
53     );
54    
55     for my $a ( 0x1000 .. 0x2000 ) {
56     $mem[$a] = 0xff;
57     }
58    
59     $self->open_screen;
60     $self->load_rom({
61     0x0000, 'rom/Galaksija/ROM1.BIN',
62 dpavlin 164 0x1000, 'rom/Galaksija/ROM2.BIN',
63 dpavlin 130 # 0xE000, 'rom/Galaksija/GAL_PLUS.BIN',
64     });
65    
66     # keyboard
67     $mem[$_] = 0xff foreach ( 0x2000 .. 0x2800 );
68    
69     # display
70 dpavlin 139 $mem[$_] = 0x20 foreach ( 0x2800 .. 0x2a00 );
71 dpavlin 130
72     # 6116-ice
73     $mem[$_] = 0 foreach ( 0x2a00 .. 0x4000 );
74    
75     $emu = $self;
76    
77     my ( $trace, $debug ) = ( $self->trace, $self->debug );
78     $self->trace( 0 );
79     $self->debug( 0 );
80    
81 dpavlin 137 warn "rendering memory\n";
82     $self->render_mem( @mem );
83 dpavlin 130
84     #$self->sync;
85     $self->trace( $trace );
86     $self->debug( $debug );
87    
88     warn "Galaksija boot finished",
89     $self->trace ? ' trace' : '',
90     $self->debug ? ' debug' : '',
91     "\n";
92    
93     Z80::reset();
94    
95 dpavlin 140 my $hor_pos = 0;
96    
97 dpavlin 130 $self->loop( sub {
98 dpavlin 178 my $run_for = shift;
99     Z80::exec( $run_for );
100 dpavlin 140 if ( $hor_pos != $mem[ 0x2ba8 ] ) {
101     warn "scroll 0x2ba8", $self->hexdump( 0x2ba8 );
102     $hor_pos = $mem[ 0x2ba8 ];
103     }
104 dpavlin 137 $self->render_vram;
105 dpavlin 130 });
106    
107     }
108    
109    
110     =head1 Memory management
111    
112     =cut
113    
114     =head2 read
115    
116     Read from memory
117    
118     $byte = read( $address );
119    
120     =cut
121    
122     sub read {
123     my $self = shift;
124     my ($addr) = @_;
125     my $byte = $mem[$addr];
126     confess sprintf("can't find memory at address %04x",$addr) unless defined($byte);
127     warn sprintf("# Galaksija::read(%04x) = %02x\n", $addr, $byte) if $self->trace;
128    
129 dpavlin 137 $self->mmap_pixel( $addr, 0, $byte, 0 ) if $self->show_mem;
130 dpavlin 130 return $byte;
131     }
132    
133     =head2 write
134    
135     Write into emory
136    
137     write( $address, $byte );
138    
139     =cut
140    
141     sub write {
142     my $self = shift;
143     my ($addr,$byte) = @_;
144     warn sprintf("# Galaksija::write(%04x,%02x)\n", $addr, $byte) if $self->trace;
145    
146 dpavlin 140 return if ( $addr > 0x4000 );
147    
148 dpavlin 137 $self->mmap_pixel( $addr, $byte, 0, 0 ) if $self->show_mem;
149 dpavlin 130 $mem[$addr] = $byte;
150     return;
151     }
152    
153 dpavlin 137 =head1 Architecture specific
154    
155 dpavlin 163 =cut
156    
157     my @keymap = (
158     'a' .. 'z',
159     qw/up down left right space/,
160     '0' .. '9',
161 dpavlin 168 ':', '"', ',', '=', '.', '/', 'return', 'tab',
162     'left alt', 'backspace', 'scroll lock', 'left shift'
163 dpavlin 163 );
164    
165     my $remap;
166     my $o = 1;
167    
168     foreach my $key ( @keymap ) {
169     $remap->{$key} = $o;
170     $o++;
171     }
172    
173     =head2 key_down
174    
175     =cut
176    
177     sub key_down {
178     my ( $self, $key ) = @_;
179 dpavlin 178 warn "registered key down: $key ", $remap->{$key};
180 dpavlin 163 $self->write( 0x2000 + $remap->{$key}, 0xfe );
181     }
182    
183     =head2 key_up
184    
185     =cut
186    
187     sub key_up {
188     my ( $self, $key ) = @_;
189 dpavlin 178 warn "registred key up: $key ", $remap->{$key};
190 dpavlin 163 $self->write( 0x2000 + $remap->{$key}, 0xff );
191     }
192    
193 dpavlin 137 =head2 render_vram
194    
195 dpavlin 164 Render characters as graphic
196    
197     =cut
198    
199     my $char_rom = 'rom/Galaksija/CHRGEN.BIN';
200    
201     my @chars = map { ord($_) } split(//, read_file( $char_rom ));
202     warn "loaded ", $#chars, " characters\n";
203    
204     my @char2pos;
205    
206     # maken from mess/video/galaxy.c
207     foreach my $char ( 0 .. 255 ) {
208     my $c = $char;
209     if ( ( $c > 63 && $c < 96 ) || ( $c > 127 && $c < 192 ) ) {
210     $c -= 64;
211     } elsif ( $c > 191 ) {
212     $c -= 128;
213     }
214     $char2pos[ $char ] = ( $c & 0x7f );
215     }
216    
217     warn dump( @char2pos );
218    
219     sub render_vram {
220     my $self = shift;
221    
222 dpavlin 178 my $t = time();
223    
224 dpavlin 164 my $addr = 0x2800;
225    
226     my @pixels = ("\x00") x ( 32 * 16 * 13 );
227     my $a = 0;
228    
229     for my $y ( 0 .. 15 ) {
230     for my $x ( 0 .. 31 ) {
231     my $c = $mem[ $addr++ ];
232     $c = $char2pos[ $c ];
233     for my $l ( 0 .. 12 ) {
234     my $o = $l << 5; # *32
235     my $co = ( $l << 7 ) | $c;
236 dpavlin 165 $pixels[ $a + $x + $o ] = $flip[ $chars[ $co ] ];
237 dpavlin 164 }
238     }
239     $a += ( 32 * 13 ); # next line
240     }
241    
242     my $vram = SDL::Surface->new(
243     -width => 256,
244     -height => 256,
245     -depth => 1, # 1 bit per pixel
246     -pitch => 32, # bytes per line
247     -from => pack("C*", @pixels),
248     );
249 dpavlin 168 $vram->set_colors( 0, $white, $black );
250 dpavlin 164
251     $self->render_frame( $vram );
252    
253     # $self->render_vram_text;
254 dpavlin 178
255     printf("frame in %.2fs\n", time()-$t);
256 dpavlin 164 }
257    
258    
259     =head2 render_vram_text
260    
261 dpavlin 137 Simple hex dumper of text buffer
262    
263     =cut
264    
265 dpavlin 139 my $last_dump = '';
266    
267 dpavlin 164 sub render_vram_text {
268 dpavlin 137 my $self = shift;
269    
270     my $addr = 0x2800;
271    
272 dpavlin 139 my $dump;
273    
274 dpavlin 137 for my $y ( 0 .. 15 ) {
275 dpavlin 140 # $dump .= sprintf "%2d: %s\n",$y, join('', map { sprintf("%02x ",$_) } @mem[ $addr .. $addr+31 ] );
276     $dump .= sprintf "%2d: %s\n",$y, join('', map { chr( $_ ) } @mem[ $addr .. $addr+31 ] );
277 dpavlin 137 $addr += 32;
278     }
279 dpavlin 140
280     if ( $mem[ 0x2bb0 ] ) {
281     warn "scroll", $self->hexdump( 0x2bb0 );
282     }
283    
284 dpavlin 139 if ( $dump ne $last_dump ) {
285     print $dump;
286     $last_dump = $dump;
287     }
288 dpavlin 137 }
289    
290 dpavlin 131 =head2 cpu_PC
291    
292     Helper metod to set or get PC for current architecture
293    
294     =cut
295    
296     sub cpu_PC {
297     my ( $self, $addr ) = @_;
298     if ( defined($addr) ) {
299     $PC = $addr;
300     warn sprintf("running from PC %04x\n", $PC);
301     };
302     return $PC;
303     }
304    
305 dpavlin 137 =head1 SEE ALSO
306    
307     L<VRac>, L<Screen>, L<Z80>
308    
309 dpavlin 130 =head1 AUTHOR
310    
311     Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
312    
313     =head1 BUGS
314    
315 dpavlin 148 Galaksija Plus isn't emulated. I don't have additional rom, but I would
316     B<love> to have support for this machine. So if you have ROM for Galaksija
317     Plus, get in touch!
318    
319 dpavlin 130 =head1 ACKNOWLEDGEMENTS
320    
321 dpavlin 148 Based on Galaxy emulator L<http://emulator.galaksija.org/> for Windows which
322     is in turn based on DOS version by Miodrag Jevremovi√¶
323     L<http://solair.eunet.yu/~jovkovic/galaxy/>.
324 dpavlin 130
325     =head1 COPYRIGHT & LICENSE
326    
327     Copyright 2007 Dobrica Pavlinusic, All Rights Reserved.
328    
329     This program is free software; you can redistribute it and/or modify it
330     under the same terms as Perl itself.
331    
332     =cut
333    
334     1; # End of Galaksija

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