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Author Topic: A Huge Breakthru!  (Read 1133 times)

EvilWays

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A Huge Breakthru!
« Reply #30 on: September 06, 2004, 08:27:00 AM »
QUOTE (sammaza @ Sep 6 2004, 07:52 AM)
well i dont know where to let this info out so here it is.....

1. many new arcade games are running on the CHihiro hardware wich is an xbox with a gd-rom instead of dvd-rom

http://www.system16....dw_chihiro.html

2.  a good friend just got a new crazy taxi 3 arcade unit....brand new,,,,i thought maybe the file structure on these arcade games would be the same as xbox... (.xbe's)

3. after many attempts at dumping the gd-rom from the arcade machine....we were able to get the 908Megs of info dumped!!!!!!!!!!!!!!!

SURPRISE!!!!  it has default.xbe   

its just an xbox game !!!!

made x-iso with Q-wix....and booted straight up!!!!!!

i will be doing screenshots of my arcade machine running the arcade version of crazy taxy III as soon as my friend gets home....

THIS IS HUGE!!!!!!!!!!!!!!!!!!

my setup-->

http://www.pixagogo.com/4126245911

This isn't the only non-Sega arcade hardware with GD-ROM option. The Triforce hardware (backed by Nintendo, Namco and Sega) also have this option.

Not to mention, that the file structure layout in the arcade version is similar to the console version for ease of porting from arcade hardware to console hardware...nothing new.
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desertboy

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« Reply #31 on: September 06, 2004, 08:34:00 AM »
I believe that sega arcade machines load the rom from gdrom into the ram at boot up (To eliminate loading times for the punter). Once booted they don't access the gdrom again (Until reboot).

This wouldn't help us unless a bootloader could be created (Unlikely I suspect).

This does smack of BS but given the thread Authors recent arcade machine thread I'm willing to give him the benefit of the doubt..... For now
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desertboy

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« Reply #32 on: September 06, 2004, 08:35:00 AM »
QUOTE (timekillr @ Sep 6 2004, 04:10 PM)
I don't get why Sega is making Chihiro-based games when their parent company, Sammy, has their own Atomiswave board out..  That just puzzles me.


Cost, ease of porting, remember how many arcade ports the DC got.
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EvilWays

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« Reply #33 on: September 06, 2004, 08:37:00 AM »
QUOTE (craigncheri @ Sep 6 2004, 03:07 PM)
I see no reason why an xbox couldn't be upgraded to 512 MB of ram, it would be a difficult mod to do but technicly there should be no problem doing so. remove existing memory chips, replace with larger capacity chips, just need to make sure you get the right type of ram chips and proper speed.

pic's of the inside of this thing would be great I'd be very intrested to see what's going on in there.

hopefully we can get a bios dump from it also.

As far as I know, there are no RAM chips that fit the specs of the original chips. Perhaps piggybacking chips might work, but who knows since I'm not an electronic engineer...
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EvilWays

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« Reply #34 on: September 06, 2004, 08:39:00 AM »
QUOTE (timekillr @ Sep 6 2004, 04:10 PM)
I don't get why Sega is making Chihiro-based games when their parent company, Sammy, has their own Atomiswave board out..  That just puzzles me.

Chihiro came out before Atomiswave and Sega was developing on the Chihiro before Sammy bought out Sega.
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desertboy

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« Reply #35 on: September 06, 2004, 08:48:00 AM »
QUOTE
The GD Rom system has a very clever way of getting around the loading delay time. When the game is initially installed, the GD ROM loads its content into the Naomi RAM. Once this is completed, the GD ROM goes into standby unless the RAM gets corupted or the game gets shut off for 72 hours or more. This does two things,

1) Eliminates loading delays completely, (after initial power up.)
2) Minimizes the on/off cycles of the GD ROM drive and greatly increasing the life of this mechanical device.

http://www.system16....aomi_gdrom.html

I think we can probably assume Chihiro works in the same way.
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EvilWays

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« Reply #36 on: September 06, 2004, 08:48:00 AM »
QUOTE (heinrich @ Sep 6 2004, 03:57 PM)
The extra ram is on a seperate "media board".. probably on the lpc, same as the super i/o board on dev kits.

and they support upto 1gig of ram.

Hmm...if the LPC you're referring to is Low Pin Count, then that bus is way too slow for RAM as LPC bus is intended to replace the ISA bus.
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desertboy

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« Reply #37 on: September 06, 2004, 08:50:00 AM »
QUOTE (EvilWays @ Sep 6 2004, 04:51 PM)
Hmm...if the LPC you're referring to is Low Pin Count, then that bus is way too slow for RAM as LPC bus is intended to replace the ISA bus.

Not to slow as a rom replacement for storing game data (Is it?) read from the GDROM.
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EvilWays

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« Reply #38 on: September 06, 2004, 08:53:00 AM »
QUOTE (Ed_209 @ Sep 6 2004, 03:41 PM)
Practically everyone here seems to be thinking backwards... trying to get their xboxes upgraded to 512 mb or RAM, figuring out ways of putting arcade games on the xbox and running them correctly...those ideas are all well and good, but my main curiousity is CAN THIS XB0X-ARCADE SYSTEM BE MODDED?  Judging by the picture, that GDROM drive hooks up to the funky xbox casing externally... so if we hooked up a PC DVD drive or wired an Xbox dvd drive to this xbox-arcade unit would it then read dvds like normal including retail xbox games? Does this thing have a hard drive built into it? Seems like it doesn't because why have a GDROM hooked up to it if the manufacturers could have had the game run on an internal hard drive instead?  If it does have a hard drive, could the Agent Under/Mech Assault  exploits work on this thing to mod it by software? Could a modchip work on it possibly if the mobo isn't entirely different? Could we take that arcade mobo and slap it in a normal xbox case? Trying to think how great Linux, emulators and all other homebrew software would look running on hardware like this.... hell, I wouldn't mine owning a Crazy Taxi arcade unit and running Burnout 3 etc on there instead!  Also, does this unit have a network jack on it? Someone needs to get a copy of the BIOS from that arcade mobo and post it in the usual places for experimental purposes, that bios has support for GD-ROM drives and who knows what else... awesome discovery!

Slow down there!

First thing's first...detailed documentation of the hardware (moreso than provided by system16.com) along with pics of the hardware internals. IIRC, the GD-ROM drives on the arcade hardware uses a SCSI interface (or worse yet, a proprietary interface which would be why more documentation would be needed). One won't get very far without understanding how the system works. From there, exploit the flaws...
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ocon

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« Reply #39 on: September 06, 2004, 09:42:00 AM »
I have seen some moded x-box inside of arcade cases, running Crazy taxi or House of the dead 3, this i've seen are normal boxes with a chipmod, and they are controlled with some kind of triggers pluged in controller port's 1 and 2, they are called "pulsadores" or shutters.

You may take a look at this, is in spanish.
http://www.mercadoli...=MLM&id=6439249


It says that he sells HOTD3 for XBOX including


1 moded XBOX

2 professional guns

1 trigger or shutter (this does the job when inserting coins)


I dont know if this is the same, or is different, but if you want, I cant get you some pics, but this are just normal boxes.
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jizzlobber

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« Reply #40 on: September 06, 2004, 10:12:00 AM »
i'm pretty sure Atomiswave is just a modified Naomi board and Chihiro is more powerful
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Iriez

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« Reply #41 on: September 06, 2004, 10:50:00 AM »
QUOTE (gronne @ Sep 6 2004, 06:12 AM)
Yes, I think the same. It will probably make it easier to make an emu. And if that hardware will make it .xbe's then the one's that got it can copy those files and put it on xbins so we can use it with our legal copies.

Uh, No.
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ghostavel

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« Reply #42 on: September 06, 2004, 11:26:00 AM »
if u look closely at the bottom there is an ethernet port.
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Rickz0rz

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« Reply #43 on: September 06, 2004, 11:47:00 AM »
Meh.  I was going to recommend you try and use a CD-RW and burn it ala Dreamcast style, but it seems that that's already gotten into discussion.  Phooey.
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logicbomb.de

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« Reply #44 on: September 06, 2004, 11:56:00 AM »
okay,  now the Dreamcast used 1GB GD-ROM media (correct me if I'm wrong here)

what sort of media is the Chihiro using? certainly not the 1GB discs  as HOTD3 is easily arount 2 gigs [for xbox] give or take a few hundred MB.

is the Chihiro using ~4.7G optical media imprinted with TOC/filesystem conforming to the GDROM protocol?

whats the capacity of Chihiro GDROM discs?

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