CPU : 68000 @ 20 MHz
Sound CPU : Z80
Sound Chip : ICS2115 32 Channel PCM
Protection : ARM asic cpu with internal code (on most later games)
Hardware Features : 1 scrolling 8x8 tiles 4bpp scrolling tilemap, 32x32 tiles 5bpp scrolling tilemap with linescroll, arbitrary size 5bpp sprites, zoom and shrink capabilities.
Notes : PGM, short for PolyGameMaster, was developed by IGS to go head to head against the neogeo.
The later Cave games use a single board system instead of the cartridge system, and use a custom bios. Emulators : MAME - Nebula
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