NEO-D0


 * Clock divider
 * memory and port control
 * interface
 * Memory card bank selection
 * Joypad outputs

Maybe similar to on the NeoGeo CD. Close to the audio hardware.

=Pinout=

=Internal schematic=



=Signals=


 * : data bus for joypad outputs
 * : Memory card upper address lines to
 * : 68k address line for decoding
 * : Z80 RAM select
 * 2610*: YM2610 control outputs
 * : Joypad outputs
 * : Z80 ROM/RAM read
 * : Z80 RAM write
 * : Z80 port read to in cartridge
 * : Clear command code in
 * : Read command code from
 * : Write reply code to