nullDC Sega Dreamcast Emulator - Public Beta 1

Mark30001 · Apr 1, 2007

nullDC, the Sega Dreamcast emulator by ZeZu, drkIIRaziel, GiGaHeRz, PsyMan, and Xant, has finally been released!

Posted by drkIIRaziel of emuforums:

After many months of coding, here is the first public beta of nullDC.
Read the ReadME before you ask anything.

Setup (includes all needed runtimes , recomended)
http://emudev.com/funstuff/nullDC_100b1_setup.rar

Plain files :
http://emudev.com/funstuff/nullDC_100b1.rar

oh , and happy april fool's day (make sure to check Google's jokes )

Enjoy

PS. Site/forums should be up within this week
Click to expand...

MottZilla · Apr 1, 2007

April 1st is a great time to post your DreamCast emulator. ;p

Sonikku · Apr 1, 2007

har har.

It's actually legit, I know these guys on IRC

THey are quite well known in the community

Barc0de · Apr 2, 2007

I guess there's one way to find out. Back later with impressions

Update:

Impressive indeed.

Pros:

Extremely good speed in 3d - ran perfectly well Sonic Adventure in 1280x1024 , compared to Chankast for example it wasn't as choppy , and was overally smooth.

Cons:

2d isn't handled as it should be in many parts (missing menus etc)

Sound needs fixing, gets noisy

And the biggest issue: Only keyboard support at the moment. I m used to using my 360 controller

Nice start though, I m looking forward an updated version that hopefully addresses the issues.

ServiceGames · Apr 2, 2007

Grumble grummmmble... how do I dump my DC BIOS?

Alchy · Apr 2, 2007

(Psst! You don't need to! Google!)

Mark30001 · Apr 2, 2007

'Undocumented' nullDC features

'Undocumented' nullDC features

With this, you're able to run unextracted GD-ROM dumps straight on the emulator.
drkIIRaziel said: ↑
As the release was realy tiring to make , there are a few things that are included in it , but not documented.Please note that these are 'not supported features' and may get removed/replaced in feature versions or even not work at all .Try em on your own risk ...

nullDC.cfg file :
There are varius settings that are not exposed in the interface.That includes AntiAlias & resolution settings for the pvr plugins.To restore default settings , just delete the config file .

Command line params (These are mostly usefull to developers):

-nosse2 , -nosse3 , -nossse3
These disable the use of some instruction sets (sse2/3/S3).(Not realy usefull)

-serial "file here"
Redirects the serial output to the given file.It can also redirect it to a COM port (-serial \\.\COM1).The file MUST exist before loading nullDC.

-slave <pipe1 handle> <pipe2 handle>
Writes serial output to pipe1 , reads from pipe2.The handles have to be created properly first (ie : -slave 912 913).It can be used to redirect the serial IO to another application

.gdi files:

The ImageReader plugin supports a format to load gdrom dumps.
here's the structure :
Entry Count
Track StartSector ctrl SectorSize File Offset
....
Track : track number
StartSector : start sector on the gdrom to map the file
ctrl : 4 -> data , 0 -> audio
SectorSize :Sector size for the data in the file , 2048 , 2352 & a few others are supported.If this is set to 0 the file is considered 'missing'
File : file to read the data from
Offset : byte offset into file to read the data from. Can be both negative and positive

The first 2 entrys are for the low density area (tracks 1 & 2,session 1)
The rest of em are on the hi density area (tracks 3+ , session 2)

Here are a few examples :

Tony Hawks Pro Skater 1:
Code:
5
1 0 0 0 none 0
2 0 0 0 none 0
3 45000 4 2352 45000to63139.bin -8
4 63288 0 0 none 0
5 69313 4 2352 69313to549150.bin -8
the 1,2 and 4 tracks are missing from my dump , the -8 is to offset the files a bit (dumped using cdrwin so the format is a bit different)

Visual Park
Code:
13
1 0 0 0 none 0
2 0 0 0 none 0
3 45000 4 2048 track3.iso 0
4 445516 0 0 track04.raw 0
5 449104 0 0 track05.raw 0
6 453213 0 0 track06.raw 0
7 455855 0 0 track07.raw 0
8 469617 0 0 track08.raw 0
9 483437 0 0 track09.raw 0
10 486080 0 0 track10.raw 0
11 491965 0 0 track11.raw 0
12 543479 0 0 track12.raw 0
13 547889 4 2048 track13.iso 0
tracks 1,2,4,5,6,7,8,9,10,11,12 are missing here (audio tracks -- they just get replaced by silence)

Thats it , i hope that helps.
Click to expand...

APE · Apr 2, 2007

Damn, I had D2 ripped as a backup in case the gd-roms ever tanked and had deleted it not long ago.

Barc0de · Apr 3, 2007

I forgot to mention I had to dump Sonic Adventure, Ecco and Shenmue on my HDD to run them

Anti-alias would be interesting, which one is it?

also, what are the following settings?:

Enhancements.MultiSampleCount=0
Enhancements.MultiSampleQuality=0

DefaultImage=default.cdi <- originally there's a typo (defualt)

HW_mixing=0
Click to expand...

Finally, is there any DirectX support for a controller hidden anywhere? (rumble too, fingers crossed, like Chankast)

nullDC Sega Dreamcast Emulator - Public Beta 1

Mark30001 Guest

MottZilla Champion of the Forum

Sonikku Gutsy Member

Barc0de Mythical Member from Time Immemorial

ServiceGames Heretic Extraordinaire

Alchy Illustrious Member

Mark30001 Guest

APE Site Supporter 2015

Barc0de Mythical Member from Time Immemorial

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nullDC Sega Dreamcast Emulator - Public Beta 1

Mark30001 Guest

MottZilla Champion of the Forum

Sonikku Gutsy Member

Barc0de Mythical Member from Time Immemorial

ServiceGames Heretic Extraordinaire

Alchy Illustrious Member

Mark30001 Guest

APE Site Supporter 2015

Barc0de Mythical Member from Time Immemorial

Share This Page

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