5 |
|
|
6 |
use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
7 |
use Carp qw/confess/; |
use Carp qw/confess/; |
8 |
|
use Exporter 'import'; |
9 |
|
our @EXPORT = qw'@mem $PC $A $P $X $Y $S $IPeriod'; |
10 |
|
|
11 |
=head1 NAME |
=head1 NAME |
12 |
|
|
23 |
# program counter |
# program counter |
24 |
our $PC = 0xbeef; |
our $PC = 0xbeef; |
25 |
# CPU registars |
# CPU registars |
26 |
our ( $A, $P, $X, $Y, $S ) = (0) x 5; |
our ( $A, $P, $X, $Y, $S ) = (0x42) x 5; |
27 |
# Set IPeriod to number of CPU cycles between calls to Loop6502 |
# Set IPeriod to number of CPU cycles between calls to Loop6502 |
28 |
our $IPeriod = 1; |
our $IPeriod = 1; |
29 |
|
|
34 |
=cut |
=cut |
35 |
|
|
36 |
sub init { |
sub init { |
37 |
warn "inside init\n"; |
my $self = shift; |
38 |
print "stdout\n"; |
warn dump(@_); |
39 |
|
warn "inside init low-level M6502 from $self\n"; |
40 |
}; |
}; |
41 |
|
|
42 |
=head2 read |
=head2 read |
106 |
sub ram { |
sub ram { |
107 |
my $self = shift; |
my $self = shift; |
108 |
my ($from,$to) = @_; |
my ($from,$to) = @_; |
109 |
|
warn "ram($from,$to)\n"; |
110 |
if ($from + $to) { |
if ($from + $to) { |
111 |
printf "ram %04x - %04x\n", $from, $to; |
printf "ram %04x - %04x\n", $from, $to; |
112 |
return $mem[$from .. $to - 1]; |
return @mem[$from .. $to - 1]; |
113 |
} |
} |
114 |
printf "ram %04x\n", $from; |
printf "ram %04x\n", $from; |
115 |
return $mem[$from] if defined($from); |
return $mem[$from] if defined($from); |