Changed Z80 CPU2 clock speed to 6MHz and YM3812 to 3MHz and VSync to 57.5 Hz. 0.75: Replaced all gfx1 roms with rom sbros-1.41 (512kb). 0.81u4: Fabrice Arzeno added clone 'Snow Bros. 0.85u2: Inigo Luja added conditional coinage to Snow Bros. 0.97u3: Corrado Tomaselli fixed OKI6295 frequency (7575 Hz) in clone Snow Brothers 3 to match samples pitch on the PCB for Final Tetris. 0.97u4: Mamesick increased 68000 clock speed to 12MHz in clone Winter Bobble - otherwise the gfx and scroll break up. Updated Snow Bros, Air Buster, DJ Boy and Heavy Unit to use ths new generic implementation. 0.117: David Haywood moved "Pandora" sprite chip implementation to its own file. Note: The set clearly suffers from bitrot and has a different copyright message (IN KOREA is replaced with 1990). 0.119u3: Added clone 'The Winter Bobble (bootleg of Snow Bros.)'. Differences are: In title screen, copyright string added with "Licensed to Dooyong Ind. Nick & Tom (Dooyong license), comes from an original PCBb. 14th August 2008: Tirino73 dumped Snow Bros. 0.127: Tirino73 / MAME Italia added clone 'Snow Bros. 0.133u1: Renamed (snowbroa) to (snowbrosa), (snowbrob) to (snowbrosb), (snowbroc) to (snowbrosc), (snowbroj) to (snowbrosj) and (snowbrod) to (snowbrosd). 0.142: Aaron Giles fixed missing video in clone 'The Winter Bobble (bootleg of Snow Bros.)'. Nick & Tom (The Winter Bobble hardware bootleg). 0.149u1: The Dumping Union added clone Snow Bros.
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