Introduction
Download
Description
Contributions
Product Numbers
Chip Labels
Territory Codes
Company Codes
System Codes
Manufacturer Codes
Printed Circuit Boards
Cartridge Edge Connector Pinout
Mask ROM Pinouts

This is a re-dump and technical documentation project for official licensed Mega Drive/Genesis cartridges started on February 14, 2006. Unlike other projects, this one follows the principle of MAME. Instead of creating plain cartridge dumps, each ROM chip is preserved individually and remain unaltered in any way to represent the real hardware. Pirated and unlicensed cartridges are not supported.

Standard DAT (created 2015-04-04, RC2 format) Software List (created 2015-04-04, MESS format)

39 115 429 unique titles

The file naming convention for the standard DAT is based on TOSEC using parentheses:


The title is well chosen. There can be slight differences between the box and what is shown on the screen. Sometimes it's just printed in a different way or the publisher added a subtitle or tagline that was not intended by the developer. In such cases additional research work is made to track down the official envisaged title.

The (Year)-field is the year of initial chip-manufacturing. Depending on the release territory, this sometimes does not match with the official release date such as in Europe, where the MD/G was released in 1990 and for some games 1989 is given. Early European releases are just 1:1 copies of their Japanese or U.S. counterparts. Some ported games show their original copyright date instead the one of the MD/G adaption or are pre-dated for the next year.

The (Territory)-field reflects the territory code of the product number.

The (Software Revision|Custom)-field is specified, if the game has been released in at least two different versions (i.e. it got updates or bug fixes) on the same market. This field is a custom implementation and could contain nearly anything.

The (Part N of X)-field is used if a cartridge features more than one ROM. The sort-order specifies the logical arrangement on the PCB.

If you consider to contribute to this project, please feel free to get in contact with me. You can send me cartridges to preserve but no selfmade ROM dumps since the project goes beyond this.

Each release was a unique product number assigned and got usually printed on the spine. They differ depending on the market and publisher. Sega itself used a "MK" prefix for the overseas market (U.S. and Europe), a "G" for the domestic market (Japan) and third party publishers got a global system independent "T" prefix. The Japanese one varies for each system, hard- and software without the use of territory codes. Overseas releases without them are for North and South America except Argentina, Paraguay and Uruguay. Here you can find a country independent overview sorted by publisher. The numbers are coded as follows:


This coding is valid for the MD/G only. Other systems like the MS/M3 got other assignments.


This coding is used for all systems including the MD/G.

From the outset, Sega used for chip labels/imprints a coding as follows:


The serial number is permanently assigned to its content and kept on a reproduction run as well. In case of software updates the optional revision letter is appended. It represents the current released software revision i.e., A for revision one, B for revision two and so on. However, this might not match with the internal software version numbering.

03	Australia
04	New Zealand
05	United Kingdom
06	Spain
07	Asia (PAL and NTSC)
08	South Korea
09	France
11	Hong Kong
13	Italy
15	China
16	?
18	Germany
20	Netherlands
22	Canada
40	Asia (not Japan and South Korea)
50	Europe

11	Taito
12	Capcom
13	Data East
14	Namco
15	Sun
20	Asmik
22	Micronet & Bignet U.S.A.
23	Vic Tokai
25	NCS
33	Kaneko
40	Toaplan
43	Human
47	Sage's Creation
48	Tengen & Time Warner Interactive
49	Telenet Japan & Renovation Products
50	Electronic Arts
58	Mentrix
69	Mirrorsoft
70	Virgin Games & Virgin Interactive Entertainment
79	U.S. Gold
81	Acclaim Entertainment
83	GameTek
86	Absolute Entertainment
88	Domark
89	Tonka
93	Sony Electronic Publishing
95	Konami
97	Tradewest & Midway
100	THQ
101	TecMagik
103	Takara
104	MicroProse
106	Electronic Arts Victor
113	Psygnosis
115	Core Design
119	Accolade
120	Codemasters
125	Interplay Productions
130	Activision
132	Playmates Interactive Entertainment
133	Bandai
139	Viacom International
151	Infogrames
164	Ocean
172	Electronic Arts (continued)
177	Ubi Soft

1	?
2	?
3	Mega Drive
4	Mega-CD
5	Sega CD Mega-CD
6	Genesis Mega Drive
7	Game Gear
8	Game Gear
9	?
0	Pico
A	Super 32X
B	Genesis 32X Mega Drive 32X
C	?
D	Dreamcast
E	?
F	Sega CD 32X Mega-CD 32X
G	Saturn
H	Saturn
I	?
J	?
K	?
L	?
M	Dreamcast
N	Dreamcast

	NEC (Pxx, Rxx, Sxx, Txx, Wxx coding after serial number)
F	Fujitsu
H	Hitachi
M	Matsushita
MX	Macronix
S	Sharp
SM	Samsung
SY	Sanyo (unconfirmed)
T	Toshiba
U	UMC

GND	A1	B1	SL1
Vcc	A2	B2	MRES
A8	A3	B3	SR1
A11	A4	B4	A9
A7	A5	B5	A10
A12	A6	B6	A18
A6	A7	B7	A19
A13	A8	B8	A20
A5	A9	B9	A21
A14	A10	B10	A22
A4	A11	B11	A23
A15	A12	B12	YS
A3	A13	B13	VSYNC
A16	A14	B14	HSYNC
A2	A15	B15	EDCLK
A17	A16	B16	CAS0
A1	A17	B17	CE0
GND	A18	B18	AS
D7	A19	B19	VCLK
D0	A20	B20	DTAK
D8	A21	B21	CAS2
D6	A22	B22	D15
D1	A23	B23	D14
D9	A24	B24	D13
D5	A25	B25	D12
D2	A26	B26	ASEL
D10	A27	B27	VRES
D4	A28	B28	LWR
D3	A29	B29	UWR
D11	A30	B30	M3
Vcc	A31	B31	TIME
GND	A32	B32	CART

The "JEDEC compliant" pinout is a truncated 42-pin DIP layout that isn't part of the JEDEC mask ROM specification.

JEDEC No. 21-C R1 27C512 compatible 0.5-Mbit (64K × 8) DIP A15 1 28 Vcc A12 2 27 A14 A7 3 26 A13 A6 4 25 A8 A5 5 24 A9 A4 6 23 A11 A3 7 22 OE A2 8 21 A10 A1 9 20 CE A0 10 19 D7 D0 11 18 D6 D1 12 17 D5 D2 13 16 D4 GND 14 15 D3	JEDEC No. 21-C R1 27C2001 compatible 2-Mbit (256K × 8) DIP N/C 1 32 Vcc A16 2 31 N/C A15 3 30 A17 A12 4 29 A14 A7 5 28 A13 A6 6 27 A8 A5 7 26 A9 A4 8 25 A11 A3 9 24 OE A2 10 23 A10 A1 11 22 CE A0 12 21 D7 D0 13 20 D6 D1 14 19 D5 D2 15 18 D4 GND 16 17 D3
JEDEC No. 21-C R1 27C1024 compatible 1-Mbit (64K × 16) DIP Vcc 1 40 Vcc CE 2 39 N/C D15 3 38 N/C D14 4 37 A15 D13 5 36 A14 D12 6 35 A13 D11 7 34 A12 D10 8 33 A11 D9 9 32 A10 D8 10 31 A9 GND 11 30 GND D7 12 29 A8 D6 13 28 A7 D5 14 27 A6 D4 15 26 A5 D3 16 25 A4 D2 17 24 A3 D1 18 23 A2 D0 19 22 A1 OE 20 21 A0	JEDEC compliant 27C400 compatible 4-Mbit (256K × 16) DIP A17 1 40 A8 A7 2 39 A9 A6 3 38 A10 A5 4 37 A11 A4 5 36 A12 A3 6 35 A13 A2 7 34 A14 A1 8 33 A15 A0 9 32 A16 CE 10 31 BYTE GND 11 30 GND OE 12 29 D15/A-1 D0 13 28 D7 D8 14 27 D14 D1 15 26 D6 D9 16 25 D13 D2 17 24 D5 D10 18 23 D12 D3 19 22 D4 D11 20 21 Vcc
JEDEC No. 21-C R6 27C800 compatible 8-Mbit (512K × 16) DIP A18 1 42 N/C A17 2 41 A8 A7 3 40 A9 A6 4 39 A10 A5 5 38 A11 A4 6 37 A12 A3 7 36 A13 A2 8 35 A14 A1 9 34 A15 A0 10 33 A16 CE 11 32 BYTE GND 12 31 GND OE 13 30 D15/A-1 D0 14 29 D7 D8 15 28 D14 D1 16 27 D6 D9 17 26 D13 D2 18 25 D5 D10 19 24 D12 D3 20 23 D4 D11 21 22 Vcc	JEDEC No. 21-C R6 27C160 compatible 16-Mbit (1M × 16) DIP A18 1 42 A19 A17 2 41 A8 A7 3 40 A9 A6 4 39 A10 A5 5 38 A11 A4 6 37 A12 A3 7 36 A13 A2 8 35 A14 A1 9 34 A15 A0 10 33 A16 CE 11 32 BYTE GND 12 31 GND OE 13 30 D15/A-1 D0 14 29 D7 D8 15 28 D14 D1 16 27 D6 D9 17 26 D13 D2 18 25 D5 D10 19 24 D12 D3 20 23 D4 D11 21 22 Vcc	K3N6C4000C 27C322 compatible 32-Mbit (2M × 16) DIP A18 1 42 A19 A17 2 41 A8 A7 3 40 A9 A6 4 39 A10 A5 5 38 A11 A4 6 37 A12 A3 7 36 A13 A2 8 35 A14 A1 9 34 A15 A0 10 33 A16 CE 11 32 A20 GND 12 31 GND OE 13 30 D15 D0 14 29 D7 D8 15 28 D14 D1 16 27 D6 D9 17 26 D13 D2 18 25 D5 D10 19 24 D12 D3 20 23 D4 D11 21 22 Vcc