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Running Sega Dreamcast Games on Your PC with nullDC
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by Rob Williams on May 3, 2012 in Gaming

Want to play your Sega Dreamcast games but don’t want to haul the console out of the closet? You’re in luck, because there exists an outstanding emulator that I recently became addicted to: nullDC. This article covers all you need to know about it, including how to get started. So what are you waiting for? SoulCalibur is waiting.

Running a Game & Final Thoughts

Prior to running a game, it’s important that you boot into the system BIOS in order to setup your VMUs (memory cards). To do this, you click on System, Start and then No Disk. Just like on the real console, you’ll be able to go into the File menu and format the faux VMUs.

nullDC Sega Dreamcast Emulator

With that done, this is where things begin to get a little complicated. Whereas an emulator like ePSXe has the ability to run a game right off of the CD, nullDC doesn’t. This is due to the fact that the Dreamcast uses GD-ROMs, not CD-ROMs. Ripping your own games isn’t an easy process either, so your best bet is to seek out proper CDI, MDS, NRG, GDI or CHD rips. There are likely a hundred different sites out there that host these image files, so they won’t be hard to find. Be careful with the sites you do land on, and always use your better judgement.

Note: Before downloading ISOs of Dreamcast games, it’s important that you understand your local laws. To err on the side of caution, stick to downloading ISOs of games you own a physical copy of.

Below is a showcase of some of the games I’ve run through nullDC. In all cases, I ran the games with the “Extra Geom” setting enabled as mentioned earlier. In some titles, this doesn’t bode too well, but it’s never detrimental to gameplay (and can be disabled just as easy as it was enabled). The first two games below, San Francisco Rush 2049 and Tony Hawk’s Pro Skater are two examples where the setting makes no difference; all you will see is black outside of the game area. The remainder of the games happened to work fine with the setting however, resulting in some nice widescreen action.

nullDC Sega Dreamcast Emulator
San Francisco Rush 2049

nullDC Sega Dreamcast Emulator
Tony Hawk’s Pro Skater

nullDC Sega Dreamcast Emulator
Sonic Adventure 2

nullDC Sega Dreamcast Emulator
GigaWing 2

nullDC Sega Dreamcast Emulator
Dead or Alive 2

nullDC Sega Dreamcast Emulator
Jet Set Radio

nullDC Sega Dreamcast Emulator
Crazy Taxi

nullDC Sega Dreamcast Emulator
Capcom vs. SNK 2

In most cases where the graphics don’t look stellar, it’s not likely nullDC at fault, but rather the fact that the objects are static (not vector). In effect, they are being stretched due to the higher resolution. Fonts and various icons tend to show off this problem well, but it’s a minor issue in the grand scheme.

Final Thoughts

In the time I’ve used nullDC so far, my experience has been good, and I’m thankful that such a robust solution exists. It’s not the most stable emulator out there, but I’ve only ever had it crash on me when switching discs or on a rarer occasion, when configuring a plugin. I’ve never had it crash while inside of a game, even when running one for a couple of hours.

As good as nullDC is, there are two problems that might keep people from using it. First is the lack of WinCE support, which some popular games do support. Second is the fact that the “extPlugin” doesn’t seem to work. That means no BBA (broadband adapter), dial-up or modem emulation. For this reason, nullDC is not likely appropriate to connect to a private Phantasy Star Online server, or the net in general.

Though I’ve never been successful with getting DEMUL to run, that’s another emulator well-worth checking out. If I ever manage to get it running, I might follow-up with an article on it and compare it to nullDC. For Dreamcast fans though, having these options is amazing, given it took so long to get them. Huge kudos to the devs of both projects for helping to keep one of the best consoles ever (imo) alive.

Discuss this article in our forums!

Have a comment you wish to make on this article? Recommendations? Criticism? Feel free to head over to our related thread and put your words to our virtual paper! There is no requirement to register in order to respond to these threads, but it sure doesn’t hurt!

Page List:
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1. Introduction
2. Running a Game & Final Thoughts


  • Serin

    Had anyone compiled for x64? I get message about incompatibility on win 8 and it won’t launch. I have been using chunkast which launches and boots to main screen but can’t read utopia or otherwise boot

    • http://techgage.com/ Rob Williams

      That’s bizarre. I have no problem at all running it on Windows 8 / x64.

  • bamminer

    Hi, I’m not looking at my PC right now, but I can tell you that I run Dreamcast games almost perfectly on NullDc 1.6 or something like that. My specs are as follows: P4 HT 3 GHz | 80 GB HD on 2 drives | 3 Gb Ddr-Ram | Int. Graphics circa 2005-ish| WinXP. I do run every non WinCE game perfectly with one exception: Sonic Adventures pauses occassionally(2-3% of the time), but is very, very playable otherwise. I know that NullDc has WinCE issues(most games will stop before completion). NullDC 3 and 4 will not run with games. Is there a way to play WinCE Dreamcast games via emulator with my specs?

    • http://techgage.com/ Rob Williams

      It might be worth testing the games out with DEMUL. When I wrote this article I had poor luck with it, but since then it’s treated me a lot better. As far as I was aware, nullDC didn’t run WinCE games at all. It’s a little unfortunate to see the project hasn’t been updated since 2011 (DEMUL was updated late 2013).