| 1 |
package Orao; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use Carp qw/confess/; |
| 7 |
use lib './lib'; |
| 8 |
#use Time::HiRes qw(time); |
| 9 |
use File::Slurp; |
| 10 |
use Data::Dump qw/dump/; |
| 11 |
use M6502; |
| 12 |
|
| 13 |
use base qw(Class::Accessor M6502 Screen Prefs); |
| 14 |
__PACKAGE__->mk_accessors(qw(run_for)); |
| 15 |
|
| 16 |
=head1 NAME |
| 17 |
|
| 18 |
Orao - Orao emulator |
| 19 |
|
| 20 |
=head1 VERSION |
| 21 |
|
| 22 |
Version 0.02 |
| 23 |
|
| 24 |
=cut |
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|
| 26 |
our $VERSION = '0.02'; |
| 27 |
|
| 28 |
=head1 SUMMARY |
| 29 |
|
| 30 |
Emulator or Orao 8-bit 6502 machine popular in Croatia |
| 31 |
|
| 32 |
=cut |
| 33 |
|
| 34 |
=head2 init |
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|
| 36 |
Start emulator, open L<Screen>, load initial ROM images, and render memory |
| 37 |
|
| 38 |
=cut |
| 39 |
|
| 40 |
our $orao; |
| 41 |
|
| 42 |
select(STDERR); $| = 1; |
| 43 |
|
| 44 |
sub init { |
| 45 |
my $self = shift; |
| 46 |
warn "Orao calling upstream init\n"; |
| 47 |
$self->SUPER::init( $self, @_ ); |
| 48 |
|
| 49 |
warn "Orao $Orao::VERSION emulation starting\n"; |
| 50 |
|
| 51 |
$self->open_screen; |
| 52 |
$self->load_rom({ |
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0x1000 => 'dump/SCRINV.BIN', |
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0xC000 => 'rom/BAS12.ROM', |
| 55 |
0xE000 => 'rom/CRT12.ROM', |
| 56 |
}); |
| 57 |
|
| 58 |
$PC = 0xDD11; # BC |
| 59 |
# $PC = 0xC274; # MC |
| 60 |
|
| 61 |
$orao = $self; |
| 62 |
|
| 63 |
# $self->prompt( 0x1000 ); |
| 64 |
|
| 65 |
my ( $trace, $debug ) = ( $self->trace, $self->debug ); |
| 66 |
$self->trace( 0 ); |
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$self->debug( 0 ); |
| 68 |
|
| 69 |
if ( $self->show_mem ) { |
| 70 |
|
| 71 |
warn "rendering memory map\n"; |
| 72 |
|
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my @mmap = ( |
| 74 |
0x0000, 0x03FF, 'nulti blok', |
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0x0400, 0x5FFF, 'korisnièki RAM (23K)', |
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0x6000, 0x7FFF, 'video RAM', |
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0x8000, 0x9FFF, 'sistemske lokacije', |
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0xA000, 0xAFFF, 'ekstenzija', |
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0xB000, 0xBFFF, 'DOS', |
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0xC000, 0xDFFF, 'BASIC ROM', |
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0xE000, 0xFFFF, 'sistemski ROM', |
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); |
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|
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foreach my $i ( 0 .. $#mmap / 3 ) { |
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my $o = $i * 3; |
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my ( $from, $to, $desc ) = @mmap[$o,$o+1,$o+2]; |
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printf "%04x - %04x - %s\n", $from, $to, $desc; |
| 88 |
for my $a ( $from .. $to ) { |
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if ( $a >= 0x6000 && $a < 0x8000 ) { |
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my $b = $self->read( $a ); |
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$self->vram( $a - 0x6000, $b ); |
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} else { |
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$self->read( $a ); |
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} |
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} |
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} |
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|
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} else { |
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|
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warn "rendering video memory\n"; |
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for my $a ( 0x6000 .. 0x7fff ) { |
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$self->vram( $a - 0x6000, $mem[$a] ); |
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} |
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|
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} |
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$self->sync; |
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$self->trace( $trace ); |
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$self->debug( $debug ); |
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|
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#( $A, $P, $X, $Y, $S, $IPeriod ) = ( 1, 2, 3, 4, 5, 6 ); |
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|
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warn "Orao init finished", |
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$self->trace ? ' trace' : '', |
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$self->debug ? ' debug' : '', |
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"\n"; |
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|
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} |
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|
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=head2 load_rom |
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|
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called to init memory and load initial rom images |
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|
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$orao->load_rom; |
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|
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=cut |
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|
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sub load_rom { |
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my ($self, $loaded_files) = @_; |
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|
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#my $time_base = time(); |
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|
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foreach my $addr ( sort keys %$loaded_files ) { |
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my $path = $loaded_files->{$addr}; |
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$self->load_oraoemu( $path, $addr ); |
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} |
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} |
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|
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# write chunk directly into memory, updateing vram if needed |
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sub _write_chunk { |
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my $self = shift; |
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my ( $addr, $chunk ) = @_; |
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$self->write_chunk( $addr, $chunk ); |
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my $end = $addr + length($chunk); |
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my ( $f, $t ) = ( 0x6000, 0x7fff ); |
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|
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if ( $end < $f || $addr >= $t ) { |
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warn "skip vram update\n"; |
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return; |
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}; |
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|
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$f = $addr if ( $addr > $f ); |
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$t = $end if ( $end < $t ); |
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|
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warn sprintf("refresh video ram %04x-%04x\n", $f, $t); |
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foreach my $a ( $f .. $t ) { |
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$self->vram( $a - 0x6000 , $mem[ $a ] ); |
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} |
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} |
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|
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=head2 load_oraoemu |
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|
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Load binary files, ROM images and Orao Emulator files |
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|
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$orao->load_oraoemu( '/path/to/file', 0x1000 ); |
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|
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Returns true on success. |
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|
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=cut |
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|
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sub load_oraoemu { |
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my $self = shift; |
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my ( $path, $addr ) = @_; |
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|
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if ( ! -e $path ) { |
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warn "ERROR: file $path doesn't exist\n"; |
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return; |
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} |
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|
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my $size = -s $path || confess "no size for $path: $!"; |
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|
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my $buff = read_file( $path ); |
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|
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if ( $size == 65538 ) { |
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$addr = 0; |
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warn sprintf "loading oraoemu 64k dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, substr($buff,2) ); |
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return 1; |
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} elsif ( $size == 32800 ) { |
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$addr = 0; |
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warn sprintf "loading oraoemu 1.3 dump %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, substr($buff,0x20) ); |
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return 1; |
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} |
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printf "loading %s at %04x - %04x %02x\n", $path, $addr, $addr+$size-1, $size; |
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$self->_write_chunk( $addr, $buff ); |
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return 1; |
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|
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my $chunk; |
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|
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my $pos = 0; |
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|
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while ( my $long = substr($buff,$pos,4) ) { |
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my @b = split(//, $long, 4); |
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$chunk .= |
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( $b[3] || '' ) . |
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( $b[2] || '' ) . |
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( $b[1] || '' ) . |
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( $b[0] || '' ); |
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$pos += 4; |
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} |
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|
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$self->_write_chunk( $addr, $chunk ); |
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|
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return 1; |
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}; |
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|
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=head2 save_dump |
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|
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$orao->save_dump( 'filename', $from, $to ); |
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|
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=cut |
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|
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sub save_dump { |
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my $self = shift; |
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|
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my ( $path, $from, $to ) = @_; |
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|
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$from ||= 0; |
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$to ||= 0xffff; |
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|
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open(my $fh, '>', $path) || die "can't open $path: $!"; |
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print $fh $self->read_chunk( $from, $to ); |
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close($fh); |
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|
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my $size = -s $path; |
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warn sprintf "saved %s %d %x bytes\n", $path, $size, $size; |
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} |
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|
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=head2 hexdump |
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|
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$orao->hexdump( $address ); |
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|
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=cut |
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|
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sub hexdump { |
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my $self = shift; |
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my $a = shift; |
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return sprintf(" %04x %s\n", $a, |
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join(" ", |
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map { |
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sprintf( "%02x", $_ ) |
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} @mem[ $a .. $a+8 ] |
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) |
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); |
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} |
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|
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=head1 Memory management |
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|
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Orao implements all I/O using mmap addresses. This was main reason why |
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L<Acme::6502> was just too slow to handle it. |
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|
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=cut |
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|
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=head2 read |
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|
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Read from memory |
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|
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$byte = read( $address ); |
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|
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=cut |
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|
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sub read { |
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my $self = shift; |
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my ($addr) = @_; |
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my $byte = $mem[$addr]; |
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warn sprintf("# Orao::read(%04x) = %02x\n", $addr, $byte) if $self->trace; |
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$self->mmap_pixel( $addr, 0, $byte, 0 ); |
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return $byte; |
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} |
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|
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=head2 write |
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|
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Write into emory |
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|
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write( $address, $byte ); |
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|
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=cut |
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|
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sub write { |
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my $self = shift; |
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my ($addr,$byte) = @_; |
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warn sprintf("# Orao::write(%04x,%02x)\n", $addr, $byte) if $self->trace; |
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|
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if ( $addr >= 0x6000 && $addr < 0x8000 ) { |
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$self->vram( $addr - 0x6000 , $byte ); |
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} |
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|
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if ( $addr == 0x8800 ) { |
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warn sprintf "sound ignored: %x\n", $byte; |
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} |
| 301 |
|
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if ( $addr > 0xafff ) { |
| 303 |
warn sprintf "write access 0x%04x > 0xafff aborting\n", $addr; |
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return; |
| 305 |
} |
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|
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$self->mmap_pixel( $addr, $byte, 0, 0 ); |
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|
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$mem[$addr] = $byte; |
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return; |
| 311 |
} |
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|
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=head1 Command Line |
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|
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Command-line debugging intrerface is implemented for communication with |
| 316 |
emulated device |
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|
| 318 |
=head2 prompt |
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|
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my ( $entered_line, @p ) = $orao->prompt( $address, $last_command ); |
| 321 |
|
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=cut |
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|
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my $last = 'r 1'; |
| 325 |
|
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sub prompt { |
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my $self = shift; |
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$self->app->sync; |
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my $a = shift; |
| 330 |
print STDERR $self->hexdump( $a ), |
| 331 |
$last ? "[$last] " : '', |
| 332 |
"> "; |
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my $in = <STDIN>; |
| 334 |
chomp($in); |
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warn "## prompt got: $in\n" if $self->debug; |
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$in ||= $last; |
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$last = $in; |
| 338 |
return ( $in, split(/\s+/, $in) ) if $in; |
| 339 |
} |
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|
| 341 |
=head2 cli |
| 342 |
|
| 343 |
$orao->cli(); |
| 344 |
|
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=cut |
| 346 |
|
| 347 |
sub cli { |
| 348 |
my $self = shift; |
| 349 |
my $a = $PC || confess "no pc?"; |
| 350 |
while ( my ($line, @v) = $self->prompt( $a, $last ) ) { |
| 351 |
my $c = shift @v; |
| 352 |
next unless defined($c); |
| 353 |
my $v = shift @v; |
| 354 |
$v = hex($v) if $v && $v =~ m/^[0-9a-f]+$/; |
| 355 |
@v = map { hex($_) } @v; |
| 356 |
printf "## a: %04x parsed cli: c:%s v:%s %s\n", $a, $c, ($v || 'undef'), join(",",@v) if $self->debug; |
| 357 |
if ( $c =~ m/^[qx]/i ) { |
| 358 |
exit; |
| 359 |
} elsif ( $c eq '?' ) { |
| 360 |
my $t = $self->trace ? 'on' : 'off' ; |
| 361 |
my $d = $self->debug ? 'on' : 'off' ; |
| 362 |
warn <<__USAGE__; |
| 363 |
Usage: |
| 364 |
|
| 365 |
x|q\t\texit |
| 366 |
e 6000 6010\tdump memory, +/- to walk forward/backward |
| 367 |
m 1000 ff 00\tput ff 00 on 1000 |
| 368 |
j|u 1000\t\tjump (change pc) |
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r 42\t\trun 42 instruction opcodes |
| 370 |
t\t\ttrace [$t] |
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d\t\tdebug [$d] |
| 372 |
|
| 373 |
__USAGE__ |
| 374 |
warn sprintf(" PC: %04x A:%02x P:%02x X:%02x Y:%02x S:%02x\n", $PC, $A, $P, $X, $Y, $S); |
| 375 |
} elsif ( $c =~ m/^e/i ) { |
| 376 |
$a = $v if defined($v); |
| 377 |
my $to = shift @v; |
| 378 |
$to = $a + 32 if ( ! $to || $to <= $a ); |
| 379 |
my $lines = int( ($to - $a + 8) / 8 ); |
| 380 |
printf "## e %04x %04x (%d bytes) lines: %d\n", $a, $to, ($to-$a), $lines; |
| 381 |
while ( --$lines ) { |
| 382 |
print $self->hexdump( $a ); |
| 383 |
$a += 8; |
| 384 |
} |
| 385 |
$last = '+'; |
| 386 |
} elsif ( $c =~ m/^\+/ ) { |
| 387 |
$a += 8; |
| 388 |
} elsif ( $c =~ m/^\-/ ) { |
| 389 |
$a -= 8; |
| 390 |
} elsif ( $c =~ m/^m/i ) { |
| 391 |
$a = $v; |
| 392 |
$self->poke_code( $a, @v ); |
| 393 |
printf "poke %d bytes at %04x\n", $#v + 1, $a; |
| 394 |
$last = '+'; |
| 395 |
} elsif ( $c =~ m/^l/i ) { |
| 396 |
my $to = shift @v || 0x1000; |
| 397 |
$a = $to; |
| 398 |
$self->load_oraoemu( $v, $a ); |
| 399 |
$last = ''; |
| 400 |
} elsif ( $c =~ m/^s/i ) { |
| 401 |
$self->save_dump( $v || 'mem.dump', @v ); |
| 402 |
$last = ''; |
| 403 |
} elsif ( $c =~ m/^r/i ) { |
| 404 |
$run_for = $v || 1; |
| 405 |
print "run_for $run_for instructions\n"; |
| 406 |
last; |
| 407 |
} elsif ( $c =~ m/^(u|j)/ ) { |
| 408 |
my $to = $v || $a; |
| 409 |
printf "set pc to %04x\n", $to; |
| 410 |
$PC = $to; # remember for restart |
| 411 |
$run_for = 1; |
| 412 |
$last = "r $run_for"; |
| 413 |
last; |
| 414 |
} elsif ( $c =~ m/^t/ ) { |
| 415 |
$self->trace( not $self->trace ); |
| 416 |
print "trace ", $self->trace ? 'on' : 'off', "\n"; |
| 417 |
$last = ''; |
| 418 |
} elsif ( $c =~ m/^d/ ) { |
| 419 |
$self->debug( not $self->debug ); |
| 420 |
print "debug ", $self->debug ? 'on' : 'off', "\n"; |
| 421 |
$last = ''; |
| 422 |
} else { |
| 423 |
warn "# ignored $line\n" if ($line); |
| 424 |
$last = ''; |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
} |
| 429 |
|
| 430 |
=head1 AUTHOR |
| 431 |
|
| 432 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 433 |
|
| 434 |
=head1 BUGS |
| 435 |
|
| 436 |
=head1 ACKNOWLEDGEMENTS |
| 437 |
|
| 438 |
See also L<http://www.foing.hr/~fng_josip/orao.htm> which is source of all |
| 439 |
info about this machine (and even hardware implementation from 2007). |
| 440 |
|
| 441 |
=head1 COPYRIGHT & LICENSE |
| 442 |
|
| 443 |
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
| 444 |
|
| 445 |
This program is free software; you can redistribute it and/or modify it |
| 446 |
under the same terms as Perl itself. |
| 447 |
|
| 448 |
=cut |
| 449 |
|
| 450 |
1; # End of Orao |
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