Pinouts

MVS Cartridges

CHA bottom	CHA top	PROG bottom	PROG top

Signal names:

• A1~A19: 68k address bus
• D0~D15: 68k data bus
• R/W: 68k R/W
• AS: 68k /AS
• ROMOEL: $000000-$0FFFFF odd byte read
• ROMOEU: $000000-$0FFFFF even byte read
• ROMOE: $000000-$0FFFFF read
• PORTOEL: $200000-$2FFFFF odd byte read
• PORTOEU: $200000-$2FFFFF even byte read
• PORTWEL: $200000-$2FFFFF odd byte write
• PORTWEU: $200000-$2FFFFF even byte write
• PORTADRS: $200000-$2FFFFF any access
• SDPAD0~SDPAD7, SDRAD0~SDRAD7: V ROM(s) data bus(ses) ?
• CR0~CR31: C ROMs data bus
• SDA0~SDA15: ?
• P0~P23: C ROM and S ROM address bus (multiplexed)
• PCK1B: Clock to latch C ROM address from P0~P23
• PCK2B: Clock to latch S ROM address from P0~P15
• CA4: C ROM A4
• 2H1: S ROM A3
• FIXD0~FIXD7: S ROM data bus

AES Cartridges

To do.

Joypad ports

Inputs are pulled high to +5V.

JAMMA connector

Infos from [HardMVS.com]

GND	A	1	GND
GND	B	2	GND
+5V	C	3	+5V
+5V	D	4	+5V
	E	5
+12V	F	6	+12V
Key	H	7	Key
Coin counter #2	J	8	Coin counter #1
Lockout coil #2	K	9	Lockout coil #1
Left speaker +	L	10	Right speaker +
Test switch	M	11	Mono audio +
Video green	N	12	Video red
Video sync	P	13	Video blue
Service switch	R	14	Video GND
Coin switch #4 P2	S	15	Coin switch #3 P1
Coin switch #2 P2	T	16	Coin switch #1 P1
P2 Start	U	17	P1 Start
P2 Up	V	18	P1 Up
P2 Down	W	19	P1 Down
P2 Left	X	20	P1 Left
P2 Right	Y	21	P1 Right
P2 A	Z	22	P1 A
P2 B	a	23	P1 B
P2 C	b	24	P1 C
P2 D	c	25	P1 D
Select down	d	26	Select up
GND	e	27	GND
GND	f	28	GND

CD/CDZ

YM2610 digital audio

Cd2_cn7.jpg Clock, L, R ?

Video and CDDA

File:Cd2 cn1cn3.jpg R, V, B, S, Burst, GND ? Clock, L, R ?

CD reader

File:Cd2 cn4.jpg

Power

File:Cd2 cn5.jpg

Multiplayer jack

To do.