NFG Games + GameSX

It also featured a wealth of off-the-shelf chips from a variety of manufacturers. The X68000's Okidata ADPCM sound chip was also used in at least one other game console, and Yamaha was essentially the only soundchip manufacturer of any import back in the day. Chips from Zilog, Motorola, Hitachi and NEC all made their way inside. As was the norm back then every chip that had extra pins was put into service for another device. The printer controller also handled joystick input, the serial controller handled the mouse and the MFP had its fingers in nearly every input or output port available.

Generic Chips
Function	Part #	Manufacturer	Notes	Datasheet
Real Time Clock	RP5C15	Ricoh
Sound:nFM Synth	YM2151	Yamaha	Paired with YM3012 DAC. 8 note, 2 channel, noise
Sound: ADPCM	MSM6258	Okidata	Also used in the PCFX
FDD Control	72065	NEC
HDD Control	MB89352A	Fujitsu	SCSI HDD Controller (Super, XVI + X68030)
Peripheral: Serial	z85C30	Zilog	Dual channel Serial controller. 1 for RS232, 1 for Mouse
Peripheral: Printer	8255	NEC	Printer port, joystick ports.
DMA Control	HD63450	Hitachi	CRT raster generator (DMA I/O for FDD, HDD, Expansion Slots, ADPCM Audio?)
MFP	68901	Motorola	Multi Function Peripheral controller. Controls monitor sync, Serial port, real-time clock, soft-power, FM Synth, IRQ, keyboard
Math Co-Pro	MC68881	Motorola	Optional. XVI has a socket for it, older units require an add-on board (often combined with RAM expansion)
Source: NFG Games + Inside X68000, SoftBank 1993