Free atari 8 bit software for linux

Hatari is project an Atari ST and STE emulator for Linux, BSD, BeOS, Mac OS X and other systems that are supported by the SDL library. The Atari ST was a 16/32 bit computer system which was first released by Atari in 1985.
Using the Motorola 68000 CPU, it was a very popular computer having quite a lot of CPU power at that time. Unlike many other Atari ST emulators which try to give you a good environment for running GEM applications, Hatari tries to emulate the hardware of a ST as close as possible so that it is able to run most of the old ST games and demos.
Hatari is open source software and is distributed under the terms of the GNU General Public License (GPL).
Enhancements:
- This release brings you basic Atari TT and Falcon emulation! Please note that both new emulation modes are still highly experiemental, some few games and demos work, but most still have more or less big problems.
- Basic emulation of Falcon video shifter (Videl), NVRAM and DMA sound is in place. The biggest drawback: There is no working Falcon DSP emulation yet.
- Screen/Shifter emulation timings have slightly been changed. Some things now work better, some others work worse...
- Some patches for compiling on RiscOS and AmigaOS have been included.
- Compiling Hatari for Windows now works better.
- Added Hatari icon (hatari-icon.bmp).
- Fixed "movec" bug in 68020 CPU mode.
- Keyboard shortcuts for loading & saving memory snapshots (AltGr+k & AltGr+l).
- The built-in debugger has been slightly improved to be more user-friendly.
- Added "hmsa" tool a little program for converting .MSA files to .ST and vice versa.

edanator is an intuitive graphical binary and hex calculator. Each nibble is displayed in hex and binary. Clicking on the button (hex nibble or binary bit) changes the value. Bit and nibble shifting is supported via dedicated buttons. The project supports variable widths per word (up to 64- bits), three words (each on a different row), and mathematical operations between words.
Enhancements:
- An endian-ness button for swapping bit labels was added along with a bit reverse function.

File::Stat::Bits - stat bit mask constants.

SYNOPSIS:

use File::stat;
use File::Stat::Bits;

my $st = stat($file) or die "Cant stat $file: $!";

if ( S_ISCHR($st->mode) ) {
my ($major, $minor) = dev_split( $st->rdev );

print "$file is character device $major:$minorn";
}

printf "Permissions are %04on", $st->mode & ALLPERMS;

(Too many S_IF* constants to example)

Lots of Perl modules use the Unix file permissions and type bits directly in binary form with risk of non-portability for some exotic bits. Note that the POSIX module does not provides all needed constants and I cant wait when the POSIX module will be updated.

This separate module provides file type/mode bit and more constants from sys/stat.ph and sys/sysmacros.ph without pollution callers namespace by other unneeded symbols from these headers. Most of these constants exported by this module are Constant Functions (see perlsub).

Since some of Perl builds does not include these converted headers, the build procedure will generate it for itself in the its own lib directory.

This module also should concentrate all portability and compatibility issues.

CONSTANTS

File type bit masks (for the st_mode field):

S_IFMT bitmask for the file type bitfields
S_IFDIR directory
S_IFCHR character device
S_IFBLK block device
S_IFREG regular file
S_IFIFO fifo (named pipe)
S_IFLNK symbolic link
S_IFSOCK socket
=cut

sub S_IFMT () { File::Stat::Bits::dirty::S_IFMT () }
sub S_IFDIR () { File::Stat::Bits::dirty::S_IFDIR () }
sub S_IFCHR () { File::Stat::Bits::dirty::S_IFCHR () }
sub S_IFBLK () { File::Stat::Bits::dirty::S_IFBLK () }
sub S_IFREG () { File::Stat::Bits::dirty::S_IFREG () }
sub S_IFIFO () { File::Stat::Bits::dirty::S_IFIFO () }
sub S_IFLNK () { File::Stat::Bits::dirty::S_IFLNK () }
sub S_IFSOCK() { File::Stat::Bits::dirty::S_IFSOCK() }


File access permission bit masks (for the st_mode field):

S_IRWXU mask for file owner permissions
S_IRUSR owner has read permission
S_IWUSR owner has write permission
S_IXUSR owner has execute permission
S_ISUID set UID bit

S_IRWXG mask for group permissions
S_IRGRP group has read permission
S_IWGRP group has write permission
S_IXGRP group has execute permission
S_ISGID set GID bit

S_IRWXO mask for permissions for others
S_IROTH others have read permission
S_IWOTH others have write permisson
S_IXOTH others have execute permission
S_ISVTX sticky bit

Common mode bit masks:

ACCESSPERMS 0777
ALLPERMS 07777
DEFFILEMODE 0666
=cut

sub S_IRWXU() { File::Stat::Bits::dirty::S_IRWXU() }
sub S_IRUSR() { File::Stat::Bits::dirty::S_IRUSR() }
sub S_IWUSR() { File::Stat::Bits::dirty::S_IWUSR() }
sub S_IXUSR() { File::Stat::Bits::dirty::S_IXUSR() }
sub S_ISUID() { File::Stat::Bits::dirty::S_ISUID() }

sub S_IRWXG() { File::Stat::Bits::dirty::S_IRWXG() }
sub S_IRGRP() { File::Stat::Bits::dirty::S_IRGRP() }
sub S_IWGRP() { File::Stat::Bits::dirty::S_IWGRP() }
sub S_IXGRP() { File::Stat::Bits::dirty::S_IXGRP() }
sub S_ISGID() { File::Stat::Bits::dirty::S_ISGID() }

sub S_IRWXO() { File::Stat::Bits::dirty::S_IRWXO() }
sub S_IROTH() { File::Stat::Bits::dirty::S_IROTH() }
sub S_IWOTH() { File::Stat::Bits::dirty::S_IWOTH() }
sub S_IXOTH() { File::Stat::Bits::dirty::S_IXOTH() }
sub S_ISVTX() { File::Stat::Bits::dirty::S_ISVTX() }

sub ACCESSPERMS() { S_IRWXU|S_IRWXG|S_IRWXO }
sub ALLPERMS() { S_ISUID|S_ISGID|S_ISVTX|ACCESSPERMS }
sub DEFFILEMODE() { S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH }

FUNCTIONS

File type test macros (for the st_mode field):

S_ISDIR ( mode ) directory?
S_ISCHR ( mode ) character device?
S_ISBLK ( mode ) block device?
S_ISREG ( mode ) regular file?
S_ISFIFO( mode ) fifo (named pipe)?
S_ISLNK ( mode ) is it a symbolic link?
S_ISSOCK( mode ) socket?

All returns boolean value.


$major = major( $st_rdev )

Returns major device number of st_rdev


$minor = minor( $st_rdev )

Returns minor device number of st_rdev


($major, $minor) = dev_split( $st_rdev )

Splits st_rdev to major and minor device numbers


$st_rdev = dev_join( $major, $minor )

Makes st_rdev from major and minor device numbers (makedev())

QARecord is a simple multithreaded stereo recording tool. QARecord project can record both 16 bit and 32 bit WAVs.

By using a large ringbuffer for the captured data, buffer overruns are avoided. QARecord can also be used as JACK client.

bit is a C++ library for manipulating buffers containing data fields that are not octet (byte) aligned.

Binary data formats containing fields that are not octet aligned are still common. One need look no further than the IP header that is present in every packet of data transmitted on the Internet.

Additionally many embedded devices and sensors still communicate via binary formats, and it was for the latter (robotic sensors) that this library was initially developed.

The bit library allows data formats to be specified at run-time through class methods or loaded from XML files at run-time (including any combinations thereof).

A companion library, bitgtk, provides a set of Gtkmm widgets for display of bit buffer representations.

Class::Bits is a Perl module with class wrappers around bit vectors.

SYNOPSIS

package MyClass;
use Class::Bits;

make_bits( a => 4, # 0..15
b => 1, # 0..1
c => 1, # 0..1
d => 2, # 0..3
e => s4 # -8..7
f => s1 # -1..0
);

package;

$o=MyClass->new(a=>12, d=>2);
print "o->b is ", $o->b, "n";

print "bit vector is ", unpack("h*", $$o), "n";

$o2=$o->new();
$o3=MyClass->new($string);

ABSTRACT

Class::Bits creates class wrappers around bit vectors.

Class::Bits defines classes using bit vectors as storage.
Object attributes are stored in bit fields inside the bit vector. Bit field sizes have to be powers of 2 (1, 2, 4, 8, 16 or 32).

There is a class constructor subroutine:

make_bits( field1 => size1, field2 => size2, ...)

exports in the calling package a ctor, accessor methods, some utility methods and some constants:

Sizes can be prefixed by s or u to define signedness of the field. Default is unsigned.

$class->new()

creates a new object with all zeros.

$class->new($bitvector)

creates a new object over $bitvector.

$class->new(%fields)

creates a new object and initializes its fields with the values in %fields.

$obj->new()

clones an object.

$obj->$field()
$obj->$field($value)

gets or sets the value of the bit field $field inside the bit vector.

$class->length
$obj->lenght

returns the size in bits of the bit vector used for storage.

$class->keys
$obj->keys

returns an array with the names of the object attributes

$obj->as_hash

returns a flatten hash with the object attributes, i.e.:
my %values=$obj->as_hash;

%INDEX

hash with offsets as used by vec perl operator (to get an offset in bits, the value has to be multiplied by the corresponding bit field size).

%SIZES

hash with bit field sizes in bits.

%SIGNED

hash with signedness of the fields

Bit fields are packed in the bit vector in the order specified as arguments to make_bits.

Bit fields are padded inside the bit vector, i.e. a class created like

make_bits(A=>1, B=>2, C=>1, D=>4, E=>8, F=>16);

will have the layout

AxBBCxxx DDDDxxxx EEEEEEEE xxxxxxxx FFFFFFFF FFFFFFFF