/[VRac]/M6502/M6502.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 68 by dpavlin, Tue Jul 31 17:15:54 2007 UTC revision 80 by dpavlin, Wed Aug 1 15:34:43 2007 UTC
# Line 6  use warnings; Line 6  use warnings;
6  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
7  use Carp qw/confess/;  use Carp qw/confess/;
8  use Exporter 'import';  use Exporter 'import';
9  our @EXPORT = qw'@mem $PC $A $P $X $Y $S $IPeriod $run_for $debug';  our @EXPORT = qw'@mem $PC $A $P $X $Y $S $IPeriod $ICount $IRequest $IAutoReset $TrapBadOps $Trap $Trace $run_for $debug';
10    our $VERSION = '0.0.2';
11    require XSLoader;
12    XSLoader::load('M6502', $VERSION);
13    
14  =head1 NAME  =head1 NAME
15    
# Line 16  M6502 - perl bindings for M6502 CPU emul Line 19  M6502 - perl bindings for M6502 CPU emul
19    
20  my $debug = 0;  my $debug = 0;
21    
 our $VERSION = qw(0.0.1);  
   
22  our @mem = (0xff) x 0x10000;    # 64M  our @mem = (0xff) x 0x10000;    # 64M
23    
24  # program counter  # program counter
25  our $PC = 0xbeef;  our $PC = 0xbeef;
26  # CPU registars  # CPU registars
27  our ( $A, $P, $X, $Y, $S ) = (0) x 5;  our ( $A, $P, $X, $Y, $S ) = (0) x 5;
28  # Set IPeriod to number of CPU cycles between calls to Loop6502  
29  our $IPeriod = 1;  our $IPeriod=1;         # Set IPeriod to number of CPU cycles between calls to Loop6502
30    our $ICount;
31    our $IRequest;          # Set to the INT_IRQ when pending IRQ
32    our $IAutoReset;        # Set to 1 to autom. reset IRequest
33    our $TrapBadOps=1;      # Set to 1 to warn of illegal opcodes
34    our $Trap;                      # Set Trap to address to trace from
35    our $Trace;                     # Set Trace=1 to start tracing
36    
37  # Exec6502 cycles  # Exec6502 cycles
38  our $run_for = 0;  our $run_for = 0;
39    
# Line 137  called by C<perl.c> to push changes in r Line 145  called by C<perl.c> to push changes in r
145    
146  sub push_R {  sub push_R {
147          warn "## M6502::push_R(",dump(@_),")\n" if $debug;          warn "## M6502::push_R(",dump(@_),")\n" if $debug;
148          my ( $a, $p, $x, $y, $s, $pc ) = @_;          ( $A, $P, $X, $Y, $S, $PC, $IPeriod, $ICount, $IRequest, $IAutoReset, $TrapBadOps, $Trap, $Trace ) = @_;
         $PC = $pc;  
         $S=$s; $X=$x; $Y=$y; $P=$p; $A=$a;  
149          dump_R();          dump_R();
150  }  }
151    
# Line 152  helper function which dumps registers in Line 158  helper function which dumps registers in
158  =cut  =cut
159    
160  sub dump_R {  sub dump_R {
161          my $dump = sprintf(" PC: %04x A:%02x P:%02x X:%02x Y:%02x S:%02x\n", $PC, $A, $P, $X, $Y, $S);          my $dump = sprintf(" PC: %04x A:%02x P:%02x X:%02x Y:%02x S:%02x "
162                    . "IPeriod:%d ICount:%d IRequest:%02x IAutoReset:%02x TrapBadOps:%d Trap:%d Trace:%d"
163                    . "\n",
164                    $PC, $A, $P, $X, $Y, $S, $IPeriod, $ICount, $IRequest, $IAutoReset, $TrapBadOps, $Trap, $Trace,
165            );
166          warn "## M6502::dump_R $dump" if $debug;          warn "## M6502::dump_R $dump" if $debug;
167          return $dump;          return $dump;
168  }  }
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