
gbsplay HISTORY


2020/xx/xx  -  unreleased
~~~~~~~~~~~~~~~~~~~~~~~~~

2020/06/26  -  0.0.94
~~~~~~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- gbsplay:
  - cpu emulation fixes:
    - RLCA/RLA/RRCA/RRA did not set ZF
    - fix botched SBC zero flag handling
    - fix slight bug in ADC/SBC
    - fix INC/DEC SP, CP A and half-carry flag in DEC
    - fix PUSH/POP AF
    - fix cycle timing for conditional branches
    - fix cycle timing for LD HLSP/LD SPHL and 16bit ALU ops
    - halt with global interrupt flag disabled can still be interrupted
  - fix error on midi plugout where a write to the file could occur
    before the file was opened
  - fix garbled screen on exit in verbose mode (gbsplay -v)
  - fix status display: respect channel in left/right total volume
  - fix impulse generator: generate a header file at compile-time
  - restore mute settings after every apu_reset

- build process:
  - fix test target during parallel builds (make -j)
  - support building with MSYS2
  - fix ShellCheck warnings

Removals:

- ditz bug tracker issues removed, use the issue tracker on the github
  project page instead: https://github.com/mmitch/gbsplay/issues

Enhancements:

- gbsplay:
  - more accurate sound and other HW emulation:
    - calculate LFSR correctly
    - play first nibble on DAC-channel from fresh buffer
    - correct noise channel speed
    - use more DMG-like DC-offsets
    - more accurate cpu cycle accounting
    - remove DC offset from DAC-channel
    - more accurate channel gating
    - support read-back of timer registers and NR52
    - fix length counter and trigger logic
    - improved sequencer correctness
    - volume envelope is only clocked when channel is running
    - support reading the scanline counter
  - show text written to link port (only if text detected, for test roms)
  - show register contents in verbose mode (gbsplay -v)
  - add basic GBR file support
  - basic support for plain GB roms
  - support ugetab int vector extension (gbs spec 1.04u)
  - add 'iodumper' plugout for testing
  - add support for blargg-gb-tests debug output
  - midi exporter:
    - track DAC and running status for channel 1-3
    - fix channel trigger handling
    - call note_off/note_on when volume changes between zero/non-zero
    - export portamenti as separate notes
    - honor APU reset (stop all notes)
    - end pending notes when closing track
    - emit pan control messages
  - new alternative midi exporter
  - enable new gcc compiler warnings
  - clarified GPL version as "GPL v1 or later"

- build process:
  - add V=1 make option for verbose compiling ("make V=1")
  - add gbsplay mime entry to install step and run update-mime-database
  - add gbsplay.desktop file in install step

Documentation:

- describe plugouts in manpage
- updated contact info
- adhere to the common manpage styleguide, see
  - man-pages(7)
  - https://liw.fi/manpages/


2015/08/23  -  0.0.93
~~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- build process:
  - configure now fails when a requested feature is not available
  - run checksum test only on x86 architectures

Removals:

- ditz bug tracker issues removed, use the issue tracker on the github
  project page instead: https://github.com/mmitch/gbsplay/issues

Enhancements:

- build process:
  - configure now fails when a requested feature is not available
  - run checksum test only on x86 architectures
  - add dsound plugin to configure --help
  - enable regparm on x86_64
  - include all the files in tarball


2015/06/19  -  0.0.92
~~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- fix player jump bug in Wizardry Gaiden
- fix switched byte order in plugout_midi
  (caused huge delays between notes)
- fix crash on files with too many subsongs

Enhancements:

- gbsplay
  - add PulseAudio plugout
  - add DirectSound plugout
  - plugout_midi: output voices to different channels
  - plugout_alsa: support suspend/resume

- gbsinfo:
  - also display default subsong

- contrib:
  - better bash completion rules

- build process:
  - fix build with GCC 5
  - add cross-compiling support
  - handle CFLAGS/LDFLAGS for autotools compatibility
  - don't fail test target when a key is pressed
  - simpler/better/more unit tests


2008/08/15  -  0.0.91
~~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- remove possible garbage sounds on songchange

Removals:

- gbsxmms:
  As it is currently broken and propably won't be fixed soon,
  building of the XMMS plugin is now disabled by default.
  If you want to try to fix it, use 'configure --with-xmmsplugin'

Enhancements:

- gbsplay
  - more accurate handling of channel 3 and master volume
  - add MIDI plugout

- contrib:
  - clarify license of gbs2ogg.sh (it's GPL'ed)
  - add (unfinished) bash completion script for gbsplay and gbsinfo

- build process:
  - installation of contrib scripts is optional
  - gbsplay test run is optional
  - remove bashishms from configure script


2008/06/21  -  0.0.9  (the Still Alive release)
~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- muted channel settings were lost on subsong change

Enhancements:

- gbsplay:
  - allow channel mute on gbsplay startup
  - add ALSA plugout


2006/01/21  -  0.0.8
~~~~~~~~~~~~~~~~~~~~

Enhancements:

- code optimizations
  - use long instead of int where possible, better on 64bit archs
  - use const where possible

- gbsplay:
  - use blipbuffer-like sound generation (better quality)
  - optimizations to channel 2 (interpolation, dc offset)
  - NAS output honors requested endianess
  - translation fixes

- build process:
  - add regression test
  - better autotools compatibility (needs fewer tweaks in ebuild)
  - fix tar call in dist target for tar versions > 1.14
  - optimize symbol hash tables
  - use -fpic instead of -fPIC
  - better error message when CC is undefined


2004/07/16  -  0.0.7
~~~~~~~~~~~~~~~~~~~~

Enhancements:

- gbsplay:
  - don't use random() for noise, emulate the original Gameboy
    behaviour
  - support more verbosity levels than just "quiet"


2004/04/26  -  0.0.6
~~~~~~~~~~~~~~~~~~~~

Bugfixes:

- fix make errors on CygWin
- fix "make dist" on FreeBSD
- fix path errors in configure script

Enhancements:

- code optimizations (using regparm where available)

- include example song "Nightmode" by Laxity

- gbsplay:
  - include a NAS driver
  - repeat mode for infinite playmode
  - set screen refresh rate (refresh_delay)
  - include a sound output plugin architecture

- gbsinfo:
  - add --help option

- build process:
  - print error on non-existing configure options
  - print additional diagnostic messages during configure
  - enable building of a shared library
  - some Solaris and FreeBSD bugfixes


2004/01/16  -  0.0.5
~~~~~~~~~~~~~~~~~~~~
- build process:
  - fix broken Cygwin build
  - more standards compliant configure script


2003/12/28  -  0.0.4
~~~~~~~~~~~~~~~~~~~~
- gbsplay:
  - changed -z and -Z description
  - output endianess can be selected
  - shuffled playlists are reproducible over playlist boundaries
  - redraw screen after SIGSTOP/SIGCONT
  - allow -1 as subsong (plays default subsong)
  - improved buffer handling

- gbsxmms:
  - fix GTK critical error and xmms segfault when closing xmms
  - builds on FreeBSD

- gbsinfo:
  - change output to an even more script friendly format

- gbs2ogg.sh:
  - dump songs in desired length and with fadeout
  - fix path to gbsinfo

- internationalization:
  - gettext support for gbsplay and gbsinfo
  - German translation

- build process:
  - remove all files on uninstall
  - fixes for non-GNU find(1)
  - fixes for non-Debian mktemp(1)
  - rebuild only changed files


2003/12/07  -  0.0.3
~~~~~~~~~~~~~~~~~~~~
- support other architectures than Linux/i386:
  - fix some endian issues
  - fix some c type issues

- gbsplay:
  - fix display of help text
  - add pause/play
  - add fadeout
  - add gap between subsongs
  - add channel mute

- gbsinfo:
  - change output to a more script friendly format

- gbsxmms:
  - fix deadlock during seek

- gbs2ogg.sh:
  - new script to convert .gbs to .ogg

- documentation:
  - add info about GBS format
  - mention Esc key to quit gbsplay

- build process:
  - generate versioned manpages
  - generate versioned directory in archive
  - no need for zlib any more
  - don't check dependencies for 'clean' and 'distclean' targets


2003/09/21  -  0.0.2
~~~~~~~~~~~~~~~~~~~~
- gbsplay bugfixes:
  - don't go haywire on startup when start_at_subsong is out-of-bounds
  - don't exit with out-of-bounds error after playing the last song

- xmms-gbs bugfixes:
  - fix seeking of previous subsong

- build process bugfixes:
  - delete all temporary files created by configure

- gbsplay new features:
  - add shuffle and random playmode
  - no need to press return for keyboard commands to take effect
  - stop after playing a given subsong
  - honor SIGSTOP and SIGCONT signals

- build process new features:
  - detect working C compiler
  - detect zlib existence


2003/09/12  -  0.0.1
~~~~~~~~~~~~~~~~~~~~
- Initial public release.
