Main CPU : NEC V70 @ 20MHz (32 bits RISC CPU)
Sound CPU : Z80 @ 8.053975 MHz
Sound chip : YM3438 @ 8.053975 MHz & Sega MultiPCM 28 channel PCM chip @ 8.053975 MHz (can access up to 4meg of sample rom)
Max Colours : 16384 (8bpp - 16 colours per sprite)
Goes through a 16->512 indirection table, then selects which 512 color bank to take from 4096. This is used to do colour rotations (the red-yellow rotation of the lava sprites from Galaxy force for instance) without changing the color palette, also allows it to have sprites that rotate colors and sprites that don't on the same screen, and to get different levels of luminosity as well
Sprite Structure : Sprites follow each other in memory except when you stumble on a "go to "
Video resoution : 320 x 224
Board composition : Main board + Rom board
Board Features : 4 BG planes and technically infinite sprites of arbitrary size, BG planes can all be scaled and linescrolled, alpha blending, global RGB brightness control
System Pictures : Main Board
High Quality Pictures (very large) : Main board - Main board 2 - Rom Board - Rom Board 2
Component Codes:
315-5385 = system controller, timers, (general "chipset" if you're into PC hardware)
315-5386 = tilemap generator (backgrounds)
315-5387 = sprite generator (x 2)
315-5388 = video mixer / color blender (x 2)
315-5242 = video DAC
Notes : This board uses two Jamma interfaces for dual screen display
Emulators : Modeler - MAME
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