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 |
# Exec6502 cycles |
# Exec6502 cycles |
30 |
our $run_for = 1; |
our $run_for = 0; |
|
$run_for = 0x42; |
|
31 |
|
|
32 |
=head1 init |
=head1 init |
33 |
|
|
72 |
|
|
73 |
=head2 poke_code |
=head2 poke_code |
74 |
|
|
75 |
Write series of bytes into memory without passing through MMU |
Write series of bytes into memory passing through MMU (C<read> and C<write>) |
76 |
|
functions. If you don't want to trigger MMU, use C<write_chunk>. |
77 |
|
|
78 |
$emu->poke_code( 0xbeef, 0xff, 0x00, 0xff, 0x00, 0xaa ); |
$emu->poke_code( 0xbeef, 0xff, 0x00, 0xff, 0x00, 0xaa ); |
79 |
|
|
83 |
my $self = shift; |
my $self = shift; |
84 |
my $addr = shift; |
my $addr = shift; |
85 |
warn sprintf("# poke_code(%04x,%s)\n", $addr, dump( @_ )) if $self->debug; |
warn sprintf("# poke_code(%04x,%s)\n", $addr, dump( @_ )) if $self->debug; |
86 |
$mem[$addr++] = $_ foreach @_; |
#$mem[$addr++] = $_ foreach @_; |
87 |
|
$self->write($addr++, $_) foreach @_; |
88 |
} |
} |
89 |
|
|
90 |
=head2 write_chunk |
=head2 write_chunk |
91 |
|
|
92 |
|
Low-level update of memory, overriding user specified MMU functions C<read> and C<write> |
93 |
|
|
94 |
$emu->write_chunk( $address, $chunk_of_data ); |
$emu->write_chunk( $address, $chunk_of_data ); |
95 |
|
|
96 |
=cut |
=cut |
122 |
confess "no from address"; |
confess "no from address"; |
123 |
} |
} |
124 |
|
|
125 |
|
=head2 prompt |
126 |
|
|
127 |
|
Call this after C<< $run_for >> cycles have been run on processor |
128 |
|
|
129 |
|
=cut |
130 |
|
|
131 |
|
sub prompt { |
132 |
|
warn "prompt -- you should override this\n"; |
133 |
|
return 1; |
134 |
|
} |
135 |
|
|
136 |
=head2 push_R |
=head2 push_R |
137 |
|
|
138 |
called by C<perl.c> to push changes in registars back to perl variables |
called by C<perl.c> to push changes in registars back to perl variables |