/[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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revision 130 by dpavlin, Sat Aug 4 20:34:59 2007 UTC revision 185 by dpavlin, Sun Sep 30 19:47:32 2007 UTC
# Line 6  use strict; Line 6  use strict;
6  use Carp qw/confess/;  use Carp qw/confess/;
7  use File::Slurp;  use File::Slurp;
8  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
9  use Z80 qw'@mem';  use Z80;
10    use Screen;
11    use Time::HiRes qw/time/;
12    
13  use base qw(Class::Accessor VRac Z80 Screen Prefs);  use base qw(Class::Accessor VRac Z80 Screen Prefs Session);
14  __PACKAGE__->mk_accessors(qw(booted));  __PACKAGE__->mk_accessors(qw(booted));
15    
16  =head1 NAME  =head1 NAME
# Line 17  Galaksija - Galaksija emulator Line 19  Galaksija - Galaksija emulator
19    
20  =head1 VERSION  =head1 VERSION
21    
22  Version 0.00  Version 0.01
23    
24  =cut  =cut
25    
26  our $VERSION = '0.00';  our $VERSION = '0.01';
27    
28  =head1 SUMMARY  =head1 SUMMARY
29    
# Line 39  our $emu; Line 41  our $emu;
41    
42  sub run {  sub run {
43          my $self = shift;          my $self = shift;
44          warn "Galaksija calling upstream init\n";  
45            warn "Galaksija $Galaksija::VERSION emulation starting\n";
46    
47            $self->show_mem( 1 );
48            #$self->trace( 1 );
49    
50          $self->SUPER::init(          $self->SUPER::init(
51                  read => sub { $self->read( @_ ) },                  read => sub { $self->read( @_ ) },
52                  write => sub { $self->write( @_ ) },                  write => sub { $self->write( @_ ) },
53          );          );
54    
         warn "Galaksija $Galaksija::VERSION emulation starting\n";  
   
         warn "emulating ", $#mem, " bytes of memory\n";  
   
55          for my $a ( 0x1000 .. 0x2000 ) {          for my $a ( 0x1000 .. 0x2000 ) {
56                  $mem[$a] = 0xff;                  $mem[$a] = 0xff;
57          }          }
# Line 56  sub run { Line 59  sub run {
59          $self->open_screen;          $self->open_screen;
60          $self->load_rom({          $self->load_rom({
61                  0x0000, 'rom/Galaksija/ROM1.BIN',                  0x0000, 'rom/Galaksija/ROM1.BIN',
62                  0x2000, 'rom/Galaksija/ROM2.BIN',                  0x1000, 'rom/Galaksija/ROM2.BIN',
63  #               0xE000, 'rom/Galaksija/GAL_PLUS.BIN',  #               0xE000, 'rom/Galaksija/GAL_PLUS.BIN',
64          });          });
65    
# Line 64  sub run { Line 67  sub run {
67          $mem[$_] = 0xff foreach ( 0x2000 .. 0x2800 );          $mem[$_] = 0xff foreach ( 0x2000 .. 0x2800 );
68    
69          # display          # display
70          $mem[$_] = ' '  foreach ( 0x2800 .. 0x2a00 );          $mem[$_] = 0x20 foreach ( 0x2800 .. 0x2a00 );
71    
72          # 6116-ice          # 6116-ice
73          $mem[$_] = 0    foreach ( 0x2a00 .. 0x4000 );          $mem[$_] = 0    foreach ( 0x2a00 .. 0x4000 );
# Line 75  sub run { Line 78  sub run {
78          $self->trace( 0 );          $self->trace( 0 );
79          $self->debug( 0 );          $self->debug( 0 );
80    
81          warn "rendering video memory\n";          warn "rendering memory\n";
82          #$self->render_vram( @mem[ 0x2800 .. 0x2a00 ] );          $self->render_mem( @mem );
83    
84          #$self->sync;          #$self->sync;
85          $self->trace( $trace );          $self->trace( $trace );
# Line 89  sub run { Line 92  sub run {
92    
93          Z80::reset();          Z80::reset();
94    
95            my $hor_pos = 0;
96    
97          $self->loop( sub {          $self->loop( sub {
98                  Z80::exec( $_[0] );                  my $run_for = shift;
99                  #$self->render_vram;                  Z80::exec( $run_for );
100                    if ( $hor_pos != $mem[ 0x2ba8 ] ) {
101                            warn "scroll 0x2ba8", $self->hexdump( 0x2ba8 );
102                            $hor_pos = $mem[ 0x2ba8 ];
103                    }
104                    $self->render_vram;
105          });          });
106    
107  }  }
# Line 99  sub run { Line 109  sub run {
109    
110  =head1 Memory management  =head1 Memory management
111    
 Galaksija implements all I/O using mmap addresses. This was main reason why  
 L<Acme::6502> was just too slow to handle it.  
   
112  =cut  =cut
113    
114  =head2 read  =head2 read
# Line 112  Read from memory Line 119  Read from memory
119    
120  =cut  =cut
121    
 my $keyboard_none = 255;  
   
 my $keyboard = {};  
   
122  sub read {  sub read {
123          my $self = shift;          my $self = shift;
124          my ($addr) = @_;          my ($addr) = @_;
# Line 123  sub read { Line 126  sub read {
126          confess sprintf("can't find memory at address %04x",$addr) unless defined($byte);          confess sprintf("can't find memory at address %04x",$addr) unless defined($byte);
127          warn sprintf("# Galaksija::read(%04x) = %02x\n", $addr, $byte) if $self->trace;          warn sprintf("# Galaksija::read(%04x) = %02x\n", $addr, $byte) if $self->trace;
128    
129            if ( $addr >= 0x2000 && $addr <= 0x2036 ) {
130    #               printf("## keyread 0x%04x = %02x\n", $addr, $byte);
131                    $self->key_pressed( 1 );        # force process of events
132            }
133    
134            $self->mmap_pixel( $addr, 0, $byte, 0 ) if $self->show_mem;
135          return $byte;          return $byte;
136  }  }
137    
# Line 139  sub write { Line 148  sub write {
148          my ($addr,$byte) = @_;          my ($addr,$byte) = @_;
149          warn sprintf("# Galaksija::write(%04x,%02x)\n", $addr, $byte) if $self->trace;          warn sprintf("# Galaksija::write(%04x,%02x)\n", $addr, $byte) if $self->trace;
150    
151            return if ( $addr > 0x4000 );
152    
153            $self->mmap_pixel( $addr, $byte, 0, 0 ) if $self->show_mem;
154          $mem[$addr] = $byte;          $mem[$addr] = $byte;
155          return;          return;
156  }  }
157    
158    =head1 Architecture specific
159    
160    =cut
161    
162    my @keymap = (
163            'a' .. 'z',
164            qw/up down left right space/,
165            '0' .. '9',
166            ':', '"', ',', '=', '.', '/', 'return', 'tab',
167            'left alt', 'backspace', 'scroll lock', 'left shift'
168    );
169    
170    my $remap_key2addr;
171    my $o = 1;
172    
173    foreach my $key ( @keymap ) {
174            $remap_key2addr->{$key} = 0x2000 + $o;
175            $o++;
176    }
177    
178    printf("keymap is mmaped 0x%04x - 0x%04x\n", 0x2000, $o);
179    
180    =head2 key_down
181    
182    =cut
183    
184    sub key_down {
185            my ( $self, $key ) = @_;
186            if ( ! defined( $remap_key2addr->{$key} ) ) {
187                    warn "unknown key pressed: $key [ignoring]\n";
188                    return;
189            }
190            printf("registered key down: $key address: %04x\n", $remap_key2addr->{$key} );
191            $self->write( $remap_key2addr->{$key}, 0xfe );
192    }
193    
194    =head2 key_up
195    
196    =cut
197    
198    sub key_up {
199            my ( $self, $key ) = @_;
200            if ( ! defined( $remap_key2addr->{$key} ) ) {
201                    warn "unknown key released: $key [ignoring]\n";
202                    return;
203            }
204            warn "registred key up: $key ", $remap_key2addr->{$key};
205            $self->write( $remap_key2addr->{$key}, 0xff );
206    }
207    
208    =head2 render_vram
209    
210    Render characters as graphic
211    
212    =cut
213    
214    my $char_rom = 'rom/Galaksija/CHRGEN.BIN';
215    
216    my @chars = map { ord($_) } split(//, read_file( $char_rom ));
217    warn "loaded ", $#chars, " bytes from $char_rom\n";
218    
219    my @char2pos;
220    
221    # maken from mess/video/galaxy.c
222    foreach my $char ( 0 .. 255 ) {
223            my $c = $char;
224            if ( ( $c > 63 && $c < 96 ) || ( $c > 127 && $c < 192 ) ) {
225                    $c -= 64;
226            } elsif ( $c > 191 ) {
227                    $c -= 128;
228            }
229            $char2pos[ $char ] = ( $c & 0x7f );
230    }
231    
232    #warn "## chars2pos = ",dump( @char2pos );
233    
234    sub screen_width { 256 }
235    sub screen_height { 16 * 13 }
236    
237    sub render_vram {
238            my $self = shift;
239    
240            my $t = time();
241    
242            my $addr = 0x2800;
243    
244            my @pixels = ("\x00") x ( 32 * 16 * 13 );
245            my $a = 0;
246    
247            for my $y ( 0 .. 15 ) {
248                    for my $x ( 0 .. 31 ) {
249                            my $c = $mem[ $addr++ ];
250                            $c = $char2pos[ $c ];
251                            for my $l ( 0 .. 12 ) {
252                                    my $o = $l << 5; # *32
253                                    my $co = ( $l << 7 ) | $c;
254                                    $pixels[ $a + $x + $o ] = $flip[ $chars[ $co ] ];
255                            }
256                    }
257                    $a += ( 32 * 13 ); # next line
258            }
259    
260            my $vram = SDL::Surface->new(
261                    -width => $self->screen_width,
262                    -height => $self->screen_height,
263                    -depth => 1,    # 1 bit per pixel
264                    -pitch => 32,   # bytes per line
265                    -from => pack("C*", @pixels),
266            );
267            $vram->set_colors( 0, $white, $black );
268    
269            $self->render_frame( $vram );
270    
271    #       $self->render_vram_text;
272    
273            printf("frame in %.2fs\n", time()-$t) if $self->debug;
274    }
275    
276    
277    =head2 render_vram_text
278    
279    Simple hex dumper of text buffer
280    
281    =cut
282    
283    my $last_dump = '';
284    
285    sub render_vram_text {
286            my $self = shift;
287    
288            my $addr = 0x2800;
289    
290            my $dump;
291    
292            for my $y ( 0 .. 15 ) {
293    #               $dump .= sprintf "%2d: %s\n",$y, join('', map { sprintf("%02x ",$_) } @mem[ $addr .. $addr+31 ] );
294                    $dump .= sprintf "%2d: %s\n",$y, join('', map { chr( $_ ) } @mem[ $addr .. $addr+31 ] );
295                    $addr += 32;
296            }
297    
298            if ( $mem[ 0x2bb0 ] ) {
299                    warn "scroll", $self->hexdump( 0x2bb0 );
300            }
301    
302            if ( $dump ne $last_dump ) {
303                    print $dump;
304                    $last_dump = $dump;
305            }
306    }
307    
308    =head2 cpu_PC
309    
310    Helper metod to set or get PC for current architecture
311    
312    =cut
313    
314    sub cpu_PC {
315            my ( $self, $addr ) = @_;
316            if ( defined($addr) ) {
317                    $PC = $addr;
318                    warn sprintf("running from PC %04x\n", $PC);
319            };
320            return $PC;
321    }
322    
323    =head1 SEE ALSO
324    
325    L<VRac>, L<Screen>, L<Z80>
326    
327  =head1 AUTHOR  =head1 AUTHOR
328    
329  Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>  Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
330    
331  =head1 BUGS  =head1 BUGS
332    
333    Galaksija Plus isn't emulated. I don't have additional rom, but I would
334    B<love> to have support for this machine. So if you have ROM for Galaksija
335    Plus, get in touch!
336    
337  =head1 ACKNOWLEDGEMENTS  =head1 ACKNOWLEDGEMENTS
338    
339  See also L<> which is source of all  Based on Galaxy emulator L<http://emulator.galaksija.org/> for Windows which
340  info about this machine (and even hardware implementation from 2007).  is in turn based on DOS version by Miodrag JevremoviŠ
341    L<http://solair.eunet.yu/~jovkovic/galaxy/>.
342    
343  =head1 COPYRIGHT & LICENSE  =head1 COPYRIGHT & LICENSE
344    

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