6 |
use warnings; |
use warnings; |
7 |
|
|
8 |
use base qw/Class::Accessor/; |
use base qw/Class::Accessor/; |
9 |
__PACKAGE__->mk_accessors(qw(tape tape_pos tape_rate)); |
__PACKAGE__->mk_accessors(qw(tape tape_path tape_pos trace)); |
10 |
|
|
11 |
use File::Slurp; |
use File::Slurp; |
12 |
use Carp qw/confess/; |
use Carp qw/confess/; |
19 |
|
|
20 |
=head2 read_tape |
=head2 read_tape |
21 |
|
|
22 |
$self->read_tape; |
my $byte = $self->read_tape; |
23 |
|
|
24 |
=cut |
=cut |
25 |
|
|
33 |
} |
} |
34 |
} |
} |
35 |
|
|
|
my @tape_bits; |
|
|
|
|
36 |
sub read_tape { |
sub read_tape { |
37 |
my $self = shift; |
my $self = shift; |
38 |
if ( ! $self->tape ) { |
if ( ! $self->tape ) { |
46 |
return -1; |
return -1; |
47 |
} |
} |
48 |
|
|
49 |
if ( ! @tape_bits ) { |
my $byte = ord( substr($self->tape,$pos,1) ); |
50 |
my $byte = ord( substr($self->tape,$pos,1) ); |
warn sprintf("tape pos %d = %02x\n", $pos, $byte); # if $self->trace; |
|
warn sprintf("tape pos %d = %02x\n", $pos, $byte); |
|
51 |
|
|
52 |
$pos++; |
$pos++; |
53 |
$self->tape_pos( $pos ); |
$self->tape_pos( $pos ); |
54 |
|
|
55 |
@tape_bits = split(//, unpack("B8",$byte) ); |
return $byte; |
56 |
} |
} |
57 |
my $bit = shift @tape_bits ? 0xff : 0x00; |
|
58 |
warn "\t$bit\n"; |
=head2 write_tape |
59 |
return $bit; |
|
60 |
|
$self->write_tape( $byte ); |
61 |
|
|
62 |
|
=cut |
63 |
|
|
64 |
|
|
65 |
|
sub write_tape { |
66 |
|
my ( $self, $byte ) = @_; |
67 |
|
|
68 |
|
$self->append_to_file( 'tape.dmp', chr($byte) ); |
69 |
|
|
70 |
|
return $byte; |
71 |
} |
} |
72 |
|
|
73 |
=head2 load_tape |
=head2 load_tape |
81 |
my $path = shift || return; |
my $path = shift || return; |
82 |
|
|
83 |
my $tape = read_file( $path ) || confess "can't load $path: $!"; |
my $tape = read_file( $path ) || confess "can't load $path: $!"; |
84 |
|
$self->tape_path( $path ); |
85 |
|
|
86 |
$self->tape_pos( 0 ); |
$self->tape_pos( 0 ); |
87 |
$self->tape( $tape ); |
$self->tape( $tape ); |
88 |
$self->tape_rate( 512 ); |
warn "loaded tape $path ", -s $path, " bytes\n"; |
|
warn "loaded tape $path ", -s $path, " bytes rate ", $self->tape_rate, "\n"; |
|
89 |
return 1; |
return 1; |
90 |
} |
} |
91 |
|
|
92 |
|
=head2 tape_status |
93 |
|
|
94 |
|
print $self->tape_status; |
95 |
|
|
96 |
|
=cut |
97 |
|
|
98 |
|
sub tape_status { |
99 |
|
my $self = shift; |
100 |
|
|
101 |
|
return "No tape in (simulated) drive" unless $self->tape; |
102 |
|
|
103 |
|
my $size = length( $self->tape ); |
104 |
|
|
105 |
|
return sprintf( |
106 |
|
"tape file: %s with %d 0x%x bytes, current position: %d 0x%x", |
107 |
|
$self->tape_path, $size, $size, $self->pos, $self->pos, |
108 |
|
); |
109 |
|
} |
110 |
|
|
111 |
|
=head1 SEE ALSO |
112 |
|
|
113 |
|
L<VRac> |
114 |
|
|
115 |
|
=cut |
116 |
|
|
117 |
1; |
1; |