0.33b1 1998/05/03 [#037 - Nicola Salmoria]
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Version 0.32 doesn't exist to avoid confusion with MAME32.


New games supported:
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Centipede (rev 1) [Brad Oliver]
Lock'n'Chase [Zsolt Vasvari]
Nibbler (alternate) Note that I also replaced a bad sound ROM in the previous set with the good one in this set [Nicola Salmoria]
Pac-Land [Ernesto Corvi]
Punk Shot [Nicola Salmoria]
Side Pocket [Ernesto Corvi]
Teenage Mutant Ninja Turtles [Alex Pasadyn]
Tutankham (Konami). Note that the old version has been renamed "tutankst" [Marc Vergoossen]
Up'n Down (preliminary - the System 8 driver needs to support rotation, and input ports have to be fixed) [Thierry lescot]
Xain'd Sleena/Solar Warrior [Carlos A. Lozano]
Zarzon [Dan Boris]


These drivers have improved GRAPHICS:
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- Fixed glitches in Gemini Wing and Rygar [Li Jih Hwa].
- Fade-in/fade-out in Robocop [Nicola Salmoria].
- Fixed colors in Centipede, including service mode multiplexed color test [Nicola Salmoria].


These drivers have new or improved SOUND:
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- New Zealand Story [Carlos A. Lozano].


Other drivers changes:
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- Fixed Atari System 1 games not accepting coins with -fm (actually -fm was supposed to be a no-op in this case since emulation of the YM2151 through OPL is not supported). You still have to keep sound on, however; disabling it will disable coins. Of course you can set the dip switches to Free Play and forget about coins.
- Service mode in Centipede and Millipede works [Brad Oliver].
- Added support for coin counters to some games [Brad Oliver].


Changes to the main program:
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- Increased the watchdog period, to avoid unexpected resets in some MCR games.


Source:
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- Drivers which dynamically change the palette are no longer required to initialize it in convert_color_prom(); they also can avoid initializing the color table, if the default layout for it (a 1:1 mapping) fits their needs. This is also useful when starting new drivers: you don't need to provide a fake palette or prom conversion function, the graphics will be visible somehow (but badly, so you had better change the defaults soon ;-) Also, games using PROMs don't need to initialize the colortable if the GfxDecodeInfo structure is properly initialized to make the correspondence 1:1.
- For drivers using the GfxLayer system, dirty rectangle support is partially built-in into the core. The OS dependant rendering functions must use Machine->dirtylayer to know which portions of the screen need to be refreshed. Drivers which use the GfxLayer system no longer need the VIDEO_SUPPORTS_DIRTY flag in the MachineDriver structure - it must be turned on automatically by the OS dependant code.
- Added support for undocumented Z80 opcodes to the C Z80 core [Juergen Buchmueller].
- Improved speed of the C 68000 core. [Juergen Buchmueller] (this is supposed to give a good speed increase, but I don't see any appreciable difference on my K6 - Nicola)