investigating the

SEGA Saturn cartridge port




cartridge devices
different types, pictures, components, datasheets

references
what's been used to make the pinout

pinout
the actual pin meanings of the cartridge port










SEGA Saturn cartridges devices:
name
 picture
 components
Memory Card Plus (MCP)

(Interact, DATEL REF 1143, mod 1110)
2x SST 29EE010 120-4C-NH 962368-T
(1Mbit page-write EEPROM, 5V, 120ns read access)

1x AMD PALCE 20V8H-25JC/4
Pro Universal Adapter (PUA)

(DATEL SATCON REF 1102) 		2x 29418 NM27C256V 150

1x PALCE 20V8H-25JC/4
Pro Action Replay (PAR)

(DATEL REF 1110) 		2x SST 29EE010 120-4CF-NH 953114-E
(1Mbit page-write EEPROM, 5V, 120ns read access)

1x AMD PALCE 20V8Q(0,O?)-25JC/4 339STZ4 H

1x T 9304 H   74HC245A
Action Replay 4M Plus (ARP4MPLUS) 1x ATMEL 9947 ATF16V8B-25PC

2x C010L 0024(0025G) (PLCC2DIP)

2x SEC Korea KM48V2100BK-6

2x 87C9YFK    SN74HC157N

1x PALCE 22V10H-25PC/4  9837ABC H

1x P9912SG   MM74HC245AN
GameShark (GS)

(Interact, DATEL REF 1143, mod 1110)


References:

Datasheet 1 Mbit (128K x8) Page-Write EEPROM
SST29EE010 / SST29LE010 / SST29VE010


SEGA Saturn Schematics
http://www.geocities.co.jp/SiliconValley-SanJose/8268/052r4l1.htm

Cartridge Port:
_H1..._H28
_H35..._H37
_H39..._H102

CD-SUBSYSTEM (all equal to some _H??)
a12...a14
a32, a33
b2...b24
b25, b28, b29
b31....b44
g27, g28
g30...g39
g41, g42
-> MPEG card
b2...b24
a12...a14
a32, a33

VDP2:
_H1...._H38

IC 21 connections:
_H29 NTSC/PAL
_H30 video-R
_H31 video-G
_H32 video-B
_H33 video clock synch
_H34 synch in

VDP1:
_H39...._H94

SCSP:
_H95..._H99

red stuff means: don't know if adapted correctly, since the numbering of Saturn Schematics differs


Charles McDonald:
(PAR, KOF)
http://cgfm2.emuviews.com/txt/satcart.txt




SEGA Saturn cartridge port pinout:
(last update: 05/03/21)
cartridge front
(right to left)
(component side)
 pin
 cartridge back
(left to right)
(solder side)
VDD 5V
 --- 0 ---
 VDD 5V

--- 1 ---
 _A45 -> SMPC IC9 pin 4
GND
 --- 2 ---
 VSS
VSS
 --- 3 ---
 VSS
D4 R / CPU D12 --- 4 --- D3 R / CPU D11
D5 R / CPU D13 --- 5 --- D2 R / CPU D10
D6 R / CPU D14 --- 6 --- D1 R / CPU D9
D7 R / CPU D15 --- 7 --- D0 R / CPU D8
VSS
 --- 8 --- VSS
D4 L / CPU D4 --- 9 --- D3 L / CPU D3
D5 L / CPU D5 --- 10 --- D2 L / CPU D2
D6 L / CPU D6 --- 11 --- D1 L / CPU D1
D7 L / CPU D7 --- 12 --- D0 L / MCP: 20V8H pin 19(I/O 1) / CPU D0
VSS
 --- 13 --- VSS

--- 14 ---

--- 15 --- PAR: 22V10 pin 10
PAR: 22V10 pin 7
 --- 16 ---
PAR: 22V10 pin 6
 --- 17 ---
CLK (ATF16V8B I/CLK 1) PAR: 16V8 pin 1
 --- 18 --- PUA: 20V8H pin 5(I 3) / PAR: Flash memory /WE
MCP: 20V8H pin 27(I 13) / PAR: 16V8 pin 12
 --- 19 ---
KOF: ROM /OE, PAR: 22V10 pin 3
 --- 20 --- KOF: ROM /CE, PAR: 22V10 pin 2
VSS
 --- 21 --- VSS

--- 22 --- A0 / CPU A0
A1 / CPU A1 --- 23 --- A9 / CPU A9
A2 / CPU A2 --- 24 --- A10 / CPU A10
A3 / CPU A3 --- 25 --- A8 / CPU A8
VSS
 --- 26 --- VSS
A4 / CPU A4 --- 27 --- A7 / CPU A7
A5 / CPU A5 --- 28 --- A12 / CPU A12
A6 / CPU A6 --- 29 --- A11 / CPU A11
A13 / CPU A13
 --- 30 --- A14 / CPU A14

------

------

------

------
VSS
 --- 31 --- VSS
A15 / CPU A15 --- 32 ---
 A16 / CPU A16
/ CPU A17 --- 33 --- MCP: 20V8H pin 4(I 2) / CPU A18
MCP: 20V8H pin 11(I 8) / CPU A19/ PAR: PAL16V8 pin 7 --- 34 --- PAR: 16V8 pin 6
EMS: ATF16V8B pin 11 I9/ OE,
MCP: 20V8H pin 17(I 12)
PAR: PAL16V8 pin 11		 --- 35 --- PAR: 16V8 pin 2
MCP: 20V8H pin 12(I 9) / PAR: PAL16V8 pin 8
 --- 36 --- PAR: 16V8 pin 5

--- 37 --- VSS
VSS
 --- 38 --- VSS

--- 39 ---
VDD 5V --- 40 --- VCC

--- 41 ---

--- 42 ---

--- 43 ---
VSS
 --- 44 --- VSS

--- 45 ---

--- 46 ---

--- 47 ---

--- 48 ---
VSS
 --- 49 --- VSS

--- 50 ---

--- 51 ---

--- 52 ---

--- 53 ---
VSS
 --- 54 --- VSS

--- 55 ---

--- 56 ---

--- 57 ---

--- 58 ---
VSS
 --- 59 --- VSS

--- 60 ---
DS_WS
 --- 61 ---
DS_CLOCK
 --- 62 ---
DS_DATA
 --- 63 ---

--- 64 ---
VDD 5V
 --- 65 --- VDD 5V
VDD 5V
 --- 66 --- VDD 5V