Z80



The Z80 is an 8-bit little-endian CPU designed by Zilog.

All NeoGeo systems use it to handle sound and music playback. It runs at 4MHz and only has access to the, or Z80 files, and its own RAM. It communicates with the CPU via a single-byte channel.

Since it doesn't share a RAM area with the 68k CPU like on the Sega Genesis, it can't be used efficiently as an auxiliary CPU to perform gameplay or video related tasks.

Also see:
 * Z80 memory map
 * Z80 port map
 * Z80 bankswitching



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Z8400 datasheet: []