Sega Hardware 1982-1992 - Parts Harmonization

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	AA
1		1983	1983	1985	1985	1986	1985	1986	1986	1986	1987	1987	1987	1988	1988	1989	1989	1989	1989	1990	1992	1992		xx = 1 present
2		LDSK	SYS1	SYS2	SYSE	MSV0	HANG	ENDU	S16A	ORUN	SHNG	S16B	XBRD	SY24	YBRD	MDV0	MTECH	SYSC	SY18	SY32	MPLAY	MSYS32		xZ = Z present
3		Laser Disk	System 1	System 2	System E	Master System/Mark III Rev 0	Hang-On	Enduro Racer	System 16A 1.0/1.1/2.0	OutRun	Super Hang-On	System 16B	X Board	System 24	Y Board	Mega Drive 1 Rev 0	Mega-Tech	System C	System 18	System 32	Mega Play	System Multi 32		aa = Present in 1 variant
4	Schem	xx	xx	xx		xx	xx	xx	xx	xx	x2	xx	xx	xx	xx	xx			x!	xx				oo = Optionally present
5	i8751		oo	oo				oo	oo			oo							oo				Protection microcontroller	ii = Integrated
6	Z80-4	xx	x2	x2		xx	xx	xx	xx	xx	xx		xx			xx	x2				x2		CPU (Note, clocked below 4MHz in Master System)	iZ = Z integrated
7	Z80-6				xx							xx											CPU (Note, clocked below 8MHz in System E)
8	Z80-8																		xx	xx		xx	CPU
9	M68000-8															xx	xx				xx		CPU (Note, clocked below 8MHz in Mega Drive)
10	M68000-10						x2	x2	xx	x2	x2	xx		x2				xx					CPU (Note, online sources frequently quote incorrect 12.5MHz speed for outrun)
11	M68000-12												x2		x3				xx				CPU (Note, mame incorrectly sets System 18 to 10MHz currently)
12	V60-16																			xx			CPU (Used in Model 1)
13	V70-20																					xx	CPU
14	SN76489		x2	x2	i2	ii										ii	i2	ii	ii		i2		PSG sound
15	D7751C								xx														PCM sound
16	D7759C											xx						oo					PCM sound
17	SegaPCMd						xx	xx															PCM sound (discrete TTL implementation, 315-5218 is packaged version)
18	YM2151							aa	xx	xx	xx	xx	xx	xx	xx								FM sound (OPM)
19	YM2203						xx	aa															FM sound (OPN)
20	YM2413					oo																	FM sound (OPLL)
21	YM2612															xx							FM sound (OPN2)
22	YM3438																	xx	x2	x2		xx	FM sound (OPN2C)
23	YM3012							aa	xx	xx	xx	xx	xx	xx	xx								DAC for YM2151 (OPM)
24	YM3014						xx	aa															DAC for YM2203 (OPN)
25	315-5011	xx	xx	xx			xx	xx	xx														sprite line comparator
26	315-5012	xx	xx	xx			xx	xx	xx														sprite generator control
27	315-5049			xx			x2	x2	x2														tilemap generator
28	315-5124				x2	xx																	Master System 1 VDP (has integrated SN76489 PSG sound)
29	315-5195									xx	xx	xx											memory mapper
30	315-5196										xx	xx			xx								sprite generator
31	315-5197									xx	xx	xx	xx										tilemap generator
32	315-5211									xx													sprite generator
33	315-5211A												xx										sprite generator
34	315-5218									xx	xx		xx		xx								PCM sound controller (AKA SegaPCM)
35	315-5242									xx	xx		xx	xx	xx			xx	xx	xx		x2	color encoder
36	315-5246																xx				xx		Master System 2 VDP (has integrated SN76489 PSG sound)
37	315-5248											xx	x2		x3								hardware multiplier
38	315-5249												x2		x3								hardware divider
39	315-5250											xx	x2										compare/timer
40	315-5275												xx										road generator
41	315-5292													xx									tilemap generator (Used in Model 1)
42	315-5293													xx									sprite generator
43	315-5294													xx									priority mixer
44	315-5295													x3									interrupt controller
45	315-5296													xx	xx			xx	xx	xx		x2	I/O chip
46	315-5305														xx								sprite generator
47	315-5308															xx	xx						bus arbitration
48	315-5309															xx	xx						bus arbitration and I/O
49	315-5312														xx								video mixing
50	315-5313															xx	xx	xx	xx		xx		Mega Drive VDP (has integrated SN76489 PSG sound)
51	315-5360																		xx				memory mapper
52	315-5361																		xx				sprite generator
53	315-5362																		xx				tilemap generator
54	315-5385																			xx		xx	interrupt controller
55	315-5386/A																			xx		xx	tilemap generator
56	315-5387																			xx		xx	sprite generator
57	315-5388																			xx		x2	video mixing
58	315-5433																				xx		Combined 315-5308/315-5309, used in late MD1 units.
59	315-5436																		xx				sprite/tile banking
60	315-5476																		xx	xx			PCM sound chip (AKA RF5C68, RF5C164, RF5C105, with "A" revisions. Used in MegaCD 1, check JVC x'eye service manual for details)
61	315-5560																					xx	FM/PCM sound chip (AKA Sega MultiPCM, YMF278/OPL4 based or re-badged, used in Model 1/2)
62	315-5591																					xx	????
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