0.0.97

Bugfixes:

• gbs core:

  • fix noise channel LSFR for more faithful drumtracks in most ROMs
  • fix generated MIDI files being ~1.5% too slow
  • reset cartridge RAM on subsong change to prevent the state of a subsong from influencing later subsongs

• gbsplay

  • fix display of unknown version number (gbsplay -V)

Enhancements:

• build process
  • display version number during configure
  • automatically provide a .tar.gz on the GitHub release page that contains proper version information like the old manual releases

0.0.96

Bugfixes:

• build process:
  • fix build errors of devdsp plugout on FreeBSD

Enhancements:

• gbsplay:

  • add PipeWire plugout
  • add application and filename to audio stream metadata
    (currently works with PipeWire, PulseAudio and with SDL2 depending
    on the configured audio backend)

• build process:

  • add automated build pipeline for FreeBSD (arm64)

0.0.95

(entries marked with (*) are present in version 0.0.95 but were missing in the HISTORY file released with version 0.0.95)

Bugfixes:

• gbsplay:

  • fix octaves in note display during playback
  • fix segfaults on status display for files other than .gbs
  • don't set up the terminal if stdout is redirected
  • fix duplicate handling of keystrokes
  • dsound plugout:
    • fix buffer handling (fixes choppy and too fast playback)
  • MIDI plugouts:
    • fix notes getting out of sync from accumulated rounding errors
    • fix 'sound off' (NR52) to affect all channels instead of channel 2 only
    • fix octaves of exported notes (not perfect since wave data on channel 3
      could contain repetitions resulting in higher octaves)
  • stdout plugout:
    • fix newline conversion of binary data on MINGW

• gbs core:

  • fix envelope volume in channel retrigger
  • fix off-by-one error in gbhw_io_peek (fixes verbose WAVE display)
  • fix sign extension bug in byte swapping (fixes endian change via -E)
  • fix small memory leak from impulse buffer
  • fix missing sound with ROMs using ugetab's VBlank timing
  • fix hex dump endianess in debug output
  • fix possible duplicate free() on zlib compressed data
  • always use 64 bits for cycle counter (fixes overflow issues on MINGW32)
  • free ROM buffer on exit

• libgbs:

  • install libgbs.h alongside the shared library to make it usable

• build process:

  • don't run depend.sh before config.mk is included
  • only enable i18n if it really works
  • only build with -fstack-* protections if they really work
  • fix Windows builds on MSYS2, MINGW32 and MINGW64
  • fix library path detection on macOS
  • fix SDL2 detection
  • (*) fix dist target in Makefile

• documentation:

  • fix typos in manpage

Removals:

• gbsplay:

  • remove unmaintained splint annotations
  • remove regparm optimizations
  • remove usleep() usage, use nanosleep() instead (it's more POSIX)

• gbsxmms:

  • finally remove XMMS plugin sourcecode that has been declared broken in 2008

Enhancements:

• gbsplay:

  • add SDL2 plugout
  • remove unneeded dsound3d dependency from dsound plugin
  • add WAV writer plugout
  • add VGM writer plugout
  • support channel mute in MIDI output plugins
  • suppress unneeded endian changes between player routine and audio plugouts
  • allow repetition of single subsongs (gbsplay -L)
  • loop mode can be changed interactively (use the l key)
  • display pause status when playback is paused
  • display 99:99 as remaining time when no subsong timeout is set
  • enforce minimum subsong timeout when playing actual ROMS (otherwise gbsplay might quit before the bootrom beep is played)
  • (*) implement our own rand() function to keep shuffle tests stable on MSYS

• gbs core:

  • transparent decompression of gzip-compressed files
  • basic VGM file playback support
  • implement DIV register emulation
  • add example ROM source using SDCC (see examples/sdcc)
  • increase impulse data resolution
  • support different cartridge types like MBC1 and MBC3 in ROM mapper
  • don't limit rombank range in the gbs mapper
  • remove home-grown extended header support for GBS files
  • add support for dumped ROMs (no controls, first song only)

• libgbs:

  • clean up libgbs (still ongoing, so no 1.0.0 yet)
  • support reentrancy to render multiple files simultaneously (test cases to prove this is working are still missing)
  • generate pkg-config configuration
  • install API documentation (needs doxygen)

• xgbsplay:

  • add simple X11 frontend (configure --with-xgbsplay)
  • and replace it by a better looking xcb/cairo frontend (dig through the sources before commit 840f894 to get the initial simple X11 frontend v1)

• gbs2gb:

  • experimental tool to convert .gbs files to .gb ROMs

• build process:

  • depend on bash 3.x for configure script
  • add automated build pipelines for Linux, macOS and Windows (MSYS2, MINGW32, MINGW64 and CygWin)
    • test for successful builds
    • test plugout configuration
    • test some configure options
    • test install and uninstall targets
    • calculate code coverage
  • use command -v instead of homegrown which replacement
  • add tests to catch regressions in file writer plugouts
  • add verbose build mode (configure --build-verbose)

• documentation:

  • the mailing list is gone, please contact us on GitHub
  • update INSTALL.md instructions and information
  • convert README and INSTALL to Markdown format
  • add shiny build status badges to README.md

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/

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 (#4)
  • run checksum test only on x86 architectures
  • add dsound plugin to configure --help
  • enable regparm on x86_64
  • include all the files in tarball (#5)

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 (#2)
  • add DirectSound plugout (#3)
  • plugout_midi: output voices to different channels
  • plugout_also: 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