U2
Zilog Z80
Co-CPU
Sound CPU
About this component
The Z80 runs the sound driver from the cartridge M1 ROM with its own 2 KB of RAM and has access only to the YM2610, which provides 4 FM, 3 SSG and 7 ADPCM channels. Missing music with a working picture points to the Z80, its RAM, the YM2610 or the cartridge M1/V ROMs.
What it does on this board
Z80 driving a Yamaha YM2610 for audio.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.