
* WHAT'S NEW *

Here you will find a summary of the changes made in each released
version of gnuboy, organized from an end-user perspective.
Webmasters, please use this file as a basis for announcing new
versions; the CHANGES file is too technical and unorganized.



RELEASE 0.9.13

  NEW FEATURES

Hardware scaling support on fbcon with matroxfb.

  PERFORMANCE

Now all software scaling code has assembly implementations.

  COMPATIBILITY

Invalid opcode crash in Montezuma's Return has been fixed.
Visual glitches in Pokemon Yellow are now fixed.

  BUGS FIXED

Line refresh was taking place too late, causing visual glitch in Alleyway.
Flags behavior on the RL, RR, RLC, and RRC opcodes was completely bogus in the
asm cpu core. Miracle it didn't break more things. Should be correct now.
The SWAP (HL) instruction in the asm cpu core was nonfunctional.



RELEASE 0.9.12

  NEW FEATURES

Hardware YUV scaling with full interpolation on systems that support it,
using SDL -- thanks goes to Magnus Damm.

  COMPATIBILITY

Binary Chaos no longer has graphical glitches, and is fully playable.
Wacky Races now displays correctly again (broken since 0.9.7).

  BUGS FIXED

Some test code was left in cpu.s, breaking DOS/Windows builds and
slowing things down across the board.
SDL joystick code was generating bogus release events.
Unused bits of VBK register were 0's; they should be 1's.
DMG palette was not being restored correctly after loading savestates.



RELEASE 0.9.11

  NEW FEATURES

Most ports can auto-choose screen size appropriate to scale given.
Scaling to 2x, 3x, and 4x is now possible at all color depths.

  PERFORMANCE

SDL port should run considerably faster than before at hires modes.
New X11 rcvar "x_shmsync" can be turned off for performance boost,
but it can result in heavy shearing and skipped frames.
The new scaling code is slightly faster than before.

  COMPATIBILITY

Konami Collection (GBC) series now works in color mode.
Worms Armageddon is now playable, might still have some glitches though.
Turok 3 no longer hangs at startup and seems fully playable.
Sound samples that played too slow in many games now sound correct.

  BUGS FIXED

Video mode setting was not working with svgalib.
Undocumented behavior - STOP instruction causes PC to skip forward.
SDL hardware surface mode is now always on and should always work fine.
More undocumented behavior - HDMA can occur while LCDC is off...?
HDMA5 register was not being initialized correctly on reset.
Timer was running at half the speed it should when in high-speed mode.



RELEASE 0.9.10

  NEW FEATURES

Primitive but fast and fully functional scale-by-two support.
New rcvar "vmode" sets video mode in all the targets that support it.
Now up to 16 joystick buttons can be used, as opposed to 8 before.
Static palette mode (rcvar "rgb332"), which can make highcolor games
look better when run at 8bpp by faking a 3/3/2 color channel mode.

  COMPATIBILITY

Added a quick hack to fake serial I/O so that Super RC Pro-Am works.
Spiderman's web is now visible in Spiderman GBC.

  PERFORMANCE

New refresh code blits lines slightly faster.
Added sdl_hwsurface rcvar to turn hardware surface on for speed boost,
disabled by default because it crashes on Windows.

  BUGS FIXED

Hopefully fixed issue with X header locations affecting some users.
DMG sprite sorting isn't working right. It's now disabled by default.
VBLANK timings have been changed slightly to fix Daedalian Opus.
Fixed various minor bugs found by enabling compiler warnings.
Spacebar was not working with SDL. Fixed.
Fixed bug that made OAM unreadable.



RELEASE 0.9.9

  NEW FEATURES

DOS port is now entirely thinlib-based. Should be more robust, featureful.
For example, custom video modes such as 256x224 are available.

  PERFORMANCE

New asm routines for displaying the background layer on color games.
This results in a significant performance boost low-end machines (~P75).
SDL code no longer fakes 16bpp but uses the native color depth.

  BUGS FIXED

SDL gnuboy no longer produces random pops in sound at startup.
Mono/stereo should now be handled correctly in the SDL code.
Eliminated compiletime error about SDL_DISABLE on SDL ver < 1.1.8.
Serious bug -- loading savestates was not updating the memory bank map --
resulted in bogus behavior after loading in certain situations.
Scrapped SDL_HWSURFACE to make fullscreen work on Windows.



RELEASE 0.9.8

  NEW FEATURES

Native SDL sound support. This means sound will work on BeOS and Windows.
Sprites are priority sorted on DMG games by default now.
ROMs can be loaded from stdin using "-" as the filename.
SDL port now runs fullscreen by default. Set sdl_fullscreen to 0 to disable.
SDL port now supports alt+enter fullscreen toggle.
Integrated Windows port by mewse (using SDL and mingw32).

  COMPATIBILITY

Added support for undocumented ram size 05 (presumably 256 kbit).
This fixes the crash with Pokemon Crystal.
Removed hacks for Altered Space and W&W because they break other games.
Added new VBLANK code that should fix them again without breaking other stuff.

  BUGS FIXED

SDL keyboard handler was not accepting the numeral keys.
SDL video was messed up bad when it couldn't get a true 160x144 display.
Loading a ROM with bogus ROM/RAM size headers used to crash the program.



RELEASE 0.9.7

  NEW FEATURES

DOS sound support!
VESA video modes on DOS!
Mono sound for cards that don't support stereo.

  COMPATIBILITY

Altered Space and Wizards & Warriors now run.
Change was made to VBLANK behavior; hopefully it doesn't break other games.

  BUGS FIXED

Envelope length was being computed wrong.
HDMA was incorrectly taking place all at once.
Command line parsing incorrectly changed - to _ in places it shouldn't.
SDL joystick support was not building correctly on non-Linux systems.



RELEASE 0.9.5

  NEW FEATURES

Showing the name from the ROM header in X11 and SDL titlebars.
The various targets can be disabled at compiletime with --without-* options.
OSS sound support might work on FreeBSD and OpenBSD but is untested.
SDL joystick support.
GNU make no longer required to compile.

  OPTIMIZATIONS

Flags handling in the C and asm cpu cores should be faster.
Word-at-a-time memory I/O is now done more efficiently.

  BUGS FIXED

Highcolor screens no longer flicker.
Misplaced high-pitched beeps in sound have been removed, again.
C graphics code was misaligning the screen by one pixel. Fixed.



RELEASE 0.9.4

  NEW FEATURES

Linux fbcon display support.
Linux joystick device support.

  COMPATIBILITY

HDMA now works in DKC and Lemmings Color.
Default wave pattern is now supported.



RELEASE 0.9.2

  NEW FEATURES

SDL port!
Sound channel 4.
MBC3 RTC support.

  COMPATIBILITY

Sound is now properly handled in savestates.
Pokemon Silver and Gold should now be playable.

  BUGS FIXED

Another bug in sweep.
Nasty aliasing from extremely high sound frequencies.



RELEASE 0.9.1

  NEW FEATURES

Experimental sound support!
Better command line parsing.
Added --showvars command line option.
Various optimizations.

  BUGS FIXED

HDMA bug.
LCDC STAT interrupt bug.



NOTE: Earlier releases have not yet been documented in this file.
Hopefully they'll be added eventually, at least for the sake of
completing the records.






