Dreamcast hardware list based on internal differences

Table of contents

Introduction

How to participate

Dreamcasts

Japan

Asia

USA & Canada

Europe

How to see the differences ?

Modem / LAN / BBA Adapters

Thanks

1) Introduction

Over the years, a lot of people have discussed the different dreamcast models.

A lot of lists based on the external case exist, but few reliable lists based on the internal hardware differences exist.

This list tries to regroup that information based on reliable sources only (ie, Dreamcast I have or detailed photos).

I’ve collected +- 30 dreamcasts, mainly Japanese for the moment, and made a small program to do a few BIOS/… checks.

It is a continuous work-in-progress, so it 1) is not complete (especially the production years) and 2) will be adapted in the future (read: very long term project).

If you have Dreamcast models not mentioned here, or models that contradict / complete the info here, please read the next paragraph to see how you can participate in making this list better.

2) How to participate

- Fill in / Select the following fields & post everything on: http://assemblergames.com/l/threads/dreamcast-hardware-list-based-on-internals.33064/

(Note: Since some properties are not straightforward, I’ve added a paragraph “how to see the differences ?”)

Region: Japan/Asia/USA/Europe

HKT nr. : HKT-3000 / HKT-3010 / HKT-3020 / HKT-3030

Color Encoding: NTSC-J / NTSC-U (with the number in the circle) / PAL (with the letter & digit besides it, eg PAL-E (1))

Fan: Metal / Plastic

Windows CE: Designed For / Compatible With

Company: Sega Enterprises / Sega Corporation

MIL-CD: Compatible / Not Compatible

GD-ROM Manufacturer: Yamaha / Samsung

GD-ROM daughter board: Yes / No

Model nr.: The 670-xxxxxx nr, with the last x being a letter

- To allow others to validate your entry, add some pictures, the clearer the better !

· Take a clear picture of the back of the Dreamcast, so that all the letters & numbers of the label(s) are readable

· Take a clear picture of the front of the Dreamcast, with the lid open, so that we can see the inside + read the Windows CE logo

· Take of the top of the case by removing a few screws in the back of the Dreamcast, and take a clear picture of the inside of the Dreamcast,

so that we can see the fan, the GD-ROM manufacturer, and whether it has a GD-ROM daughterboard or not.

- Specify if you bought it first-hand or second-hand

- If you can upload .elf programs to your Dreamcast via BBA/Lan/serial cable, upload the checker program dc_joho.elf to your Dreamcast & post a screenshot of the Bios version & CRC.

· Warning: program is not 100% correct yet, but the BIOS CRC & the version string should be OK.

· This an example of the current output:







3) Dreamcasts

USA Type 1 (Launch Model) USA Type 2 USA Type 3 USA Type 4 Region USA USA USA USA HKT nr. HKT-3020 HKT-3020 HKT-3020 HKT-3020 Color Encoding

NTSC-U (1)

NTSC-U (2) Fan Plastic Plastic Windows CE Compatible With Compatible With Company Sega Enterprises Sega Enterprises MIL-CD

Compatible

(to be tested later – broken laser on test DC) GD-ROM Manufacturer GD-ROM daughter board Yes No BIOS-CRC Model nr. 670-14081G, 670-14081M 670-14081N

EUR Type 1 (Launch Model) EUR Type 2 EUR Type 3 EUR Type 4 Region Europe Europe Europe Europe HKT nr. HKT-3030 HKT-3030 HKT-3030 HKT-3030 Color Encoding PAL-E (1) PAL-E (1) Fan Metal Plastic Windows CE Compatible With Compatible With Company Sega Enterprises Sega Enterprises MIL-CD Yes Yes GD-ROM Manufacturer Samsung GD-ROM daughter board Yes Yes BIOS-CRC 1.01d - 0x89F2B1A1 Model nr. 670-14088C 670-14088E







A) Japan:

Japan Type 1:

Nr. Manufacturer Production Years Case Types

670-13748A SEIYO D. (1998-99) normal DC

670-13748B SANWA DENKI S (1999) normal DC, Dev.Cas

670-13748C ASAHI Electron (1998-99) normal DC

Debug DC 1.01d - 0x89F2B1A1 670-13748D T. TKR (1998-99) normal DC

670-13748E UGO DENSHI (1999) normal DC



Japan Type 2:

Nr. Manufacturer Production Years Case Types 670-14071B SANWA DENKI S (1999-2000) normal DC 670-14071C ASAHI Electron (1999-2000) normal DC, (Hello Kitty (TBC)) 670-14071D T. TKR (1999) normal DC 670-14071E UGO DENSHI (2000) normal DC, R7 retail version

Japan Type 3:

Nr. Manufacturer Production Years Case Types

670-14071G UGO DENSHI (2000) normal DC, Sakura Taisen



Japan Type 4:

Nr. Manufacturer Production Years Case Types

670-14071F ASAHI Electron (2001) normal DC



B) ASIA: HKT-3010: NTSC-J

Asia Type 1: Launch model. Metal fan. MIL-CD compatible.

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-13624A SEGA ? normal DC 1.004 - 0x5454841F

Asia Type ?:

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14146A SEGA ? normal DC

C) USA & Canada:

USA Type ? (all these data have to be verified):

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14081B

(1999) normal DC 670-14081D SD (Japan) – NTSC-U(0) (1999) ? 670-14081H AE (Japan) – NTSC-U(1) (2000) ? 670-14081J TK (Japan) – NTSC-U(1) (1999-2000) ? 670-14081K UD (Japan) – NTSC-U(1) (1999) ? 670-14081L GS (Indonesia) (1999) ? 670-14081P SA (China) - NTSC-U(2) (2000) NTSC-U (2) 670-14081R

SA (China) - NTSC-U(2) (2000) Sega Corporation







USA Type 2:

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14081G SD (Japan) (2000) normal DC 670-14081M WK (China) (1999-2000) normal DC 1.01d - 0x89F2B1A1

USA Type 4:

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14081N WK (China) (2000) normal DC (to be tested later – broken laser)

D) Europe:

Europe Type ? (all these data have to be verified)::

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14088B Indonesia, PAL-E(1)

(1999)





670-14088D ? ? normal DC

Europe Type 1:

Nr. Manufacturer Production Years Case Types BIOS (CRC) 670-14088C ? (Indonesia) (1999) normal DC

Europe Type 2:

Nr. Manufacturer Production Years Case Types

670-14088E ? (Indonesia) (2000) normal DC









E) How to see the differences ?

Fan:

Metal: Plastic Japan: Europe: Japan & Europe:







GD-ROM daughter board:

With daughter board: Without daughter board:























4) Modem / LAN / BBA Adapters





Modem Jap Type A Jap Type B Jap Type C External ref. S98-3073-0 A00-0491 JP A00-0492 JP, 670-14140B

Board ref. (171-*) 171-7628D

171-8094C

171-8094C

Board ref. (837-*) 837-13377

837-14115

837-14040

837-14041

837-14040

837-14041

Board text IC BD MODEMARU

IC BD MODEMARU JPN/USA

IC BD MODEMARU JPN/USA

Company SEGA SEGA SEGA Year 1998 2000

2000

Made in Japan

Japan

Japan

Modem Chip Manuf. Rockwell Conexant Conexant

Modem Chip Ref. RP336LD R6785-17 RP336LD R6785-18

RP56LD R6785-19

Modem Speed

V.34 (33.6 kbps) V.34 (33.6 kbps) V.90 / K56flex





Modem



USA Type C1 USA Type C2 USA Type C3

External ref.



670-14082A, 670-14140A 670-14082A, 670-14140B 670-14082A , 670-14140B

Board ref. (171-*)



171-7954B

171-7954B

171-8094C



Board ref. (837-*)



837-13770

837-13770

837-14115

837-14040

837-14041

Board text



IC BD MODEMARU USA

IC BD MODEMARU USA

IC BD MODEMARU JPN/USA

Company



SEGA

SEGA

SEGA

Year



1999

1999

2000



Made in



Japan

Japan

Japan



Modem Chip Manuf.



Conexant

Conexant

Conexant

Modem Chip Ref.



RP56LD R6785-19 RP56LD R6785-19

RP56LD R6785-19

Modem Speed





V.90 / K56flex V.90 / K56flex V.90 / K56flex



Modem EUR Type A EUR Type B EUR Type C External ref. 670-14116A 670-14116A / 670-14117A ? Board ref. (171-*) 171-7955D 171-7955D 171-7955D Board ref. (837-*) 837-13771 837-13771 837-13771 Board text IC BD MODEMARU EUR/AUS IC BD MODEMARU EUR/AUS IC BD MODEMARU EUR/AUS Company SEGA SEGA SEGA Year 1999 1999 1999 Made in Japan Japan Japan Modem Chip Manuf. Rockwell Conexant Conexant Modem Chip Ref. RP336LD R6785-17 RP336LD R6785-18 RP56LD R6785-19 Modem Speed

V.34 (33.6 kbps)

V.34 (33.6 kbps) V.90 / K56flex

LAN / Broadband Adapter

Jap LAN Jap BBA

USA BBA

External ref. (None) 670-14250C

Board ref. (171-*) 171-8075B (Main)

171-8076B (Sub) 171-8124F ?

Board ref. (837-*) 837-13993B (Main)

837-13994B (Sub) 837-14081

Board text PC BD MAIN LAN-SDRAM (Main)

PC BD SUB LAN-SDRAM (Sub) PC BD LANMARU2 FOR DC

Company SEGA SEGA



Year 2000 2000

Made in Japan Japan

Modem Chip Manuf. Altera + Fujitsu Realtek + Pulse

Modem Chip Ref. Max EPM7064STC100-10 + (?) MB86967 RTL8139C + H0011 + H0011

Modem Speed

10 mbps 100 mbps







Specials

Dummy Modem

Debug DC Modem

External ref. -



(None)

Board ref. (171-*) 171-7788A

171-7954B

Board ref. (837-*) 839-1107A

837-13770

Board text PC BD TERMINATION

IC BD MODEMARU USA

Company SEGA



SEGA Year -



1999

Made in Japan

Japan Modem Chip Manuf. -



Rockwell

Modem Chip Ref. -



RP56LD R6785-19 Modem Speed

-



V.90 / K56flex

JAP:





Front – Type A

Front – Type B

Front – Type C

Back – Type A

Back – Type B

Back – Type C Bottom – Type A

Bottom – Type B

Bottom – Type C











USA-CAN:





Front – Type C1

Front – Type C2

Front – Type C3

Back – Type C1

Back – Type C2

Back – Type C3

Bottom – Type C1

Bottom – Type C2

Bottom – Type C3

Inside – Type C1

Inside – Type C2

Inside – Type C3











EUR:

Front – Type A Front – Type B Front – Type C Back – Type A Back – Type B Back – Type C Bottom – Type A Bottom – Type B Bottom – Type C



Broadband Adapter:

Front - Jap



Back - Jap



Bottom - Jap













Front - Jap



Back - Jap



Inside - Jap

















Front



Back













Debug DC modem:





Front - USA



Back - USA



Side - USA



Miniboard-USA













5) Thanks

This list couldn’t have been done without the help of:

APE, mooseblaster