Z80

Z80 in a surface mount package, as found in the MVS and CD hardware.

The Z80 is an 8bit CPU designed by Zilog.

All NeoGeo systems use it to handle "tracker music" playback. It runs at 4MHz and only has access to the YM2610, M1 ROM, Z80 files, and its RAM.

See 68k/Z80 communication.

Since it doesn't share any memory area with the 68k CPU as on the Sega Genesis, it can't be used efficiently to perform gameplay-related tasks.

See Z80 memory map and Z80 port map.

Z80 in DIP package, as found on AES boards.

Datasheet

Official Z8400 datasheet: [[1]]