CHANKA FOR XBOX!!!!!

blasfemaz · Post by **blasfemaz** » Sat Jun 26, 2004 7:22 pm

nah, I dont like my xbox too much. it's not even an xbox anymore. It's a mediacenter. I use it mostly to watch movies and play all my old nes, and snes favorites. I dont even play any xbox games....

Ian Micheal · Post by **Ian Micheal** » Sun Jun 27, 2004 12:42 am

Dont even need it to do any of that dreamcast will.

az_bont · Post by **az_bont** » Sun Jun 27, 2004 9:33 am

But to be fair to the Xbox, it's handling of emulation from the 16-bit era is better than the Dreamcast's, and it's media player far surpasses anything our favourite little console could muster.

Although there are still plenty of reasons to hate the thing

.

Post by **Christuserloeser** » Sun Jun 27, 2004 10:57 am

thats easy with all these leaked x86 ASM emus/apps

for dc everything has to be in C or needs to be converted to SHx ASM

love the hard work that's done for DC and believe that now that the xbox reaches its limits the dc soon will get very close to it

Chris

bender · Post by **bender** » Sun Jun 27, 2004 1:05 pm

Unai from Chankast has been at the MadriDC party in Spain. He explained the new features that were going to be added, like the debugger that actually has and said very interesting reasons explaining that a future version will run at full speed in a 600-700Mhz pc

Considering that the xbox it's a pc but without a Windows XP eating lots of resources i think that the M$ console can make it run at 100% speed

az_bont · Post by **az_bont** » Sun Jun 27, 2004 1:43 pm

bender wrote:...a future version will run at full speed in a 600-700Mhz pc

I'm sure I remember somebody saying that an SH4 at 200MHz is equal to a 800MHz P3

.

Post by **Quzar** » Sun Jun 27, 2004 2:37 pm

The SH4's FPU capabilities equal or surpass that of a P3 733 processor. Its integer calculations (which is what is needed for emulation) operate near that of a 200Mhz Pentium class chip (definetly MMX maybe even a p2 or something)

I garuntee there is no way this will be true fullspeed on an Xbox ever. By true fullspeed i mean within 99% accuracy of emulation, no frameskip, no underclocking, no Xbox with an OCd 2 Ghz p3, sound turned on and capable of most of its abilities, etc.

bender · Post by **bender** » Sun Jun 27, 2004 3:40 pm

well, you're probably right about the xbox. I forgot that xbox CPU it's a Celeron and that the system has only 64Mb ram. Anyway don't think as a pc when talking about the xbox. It's a pc but there's not a big monster like windowze installed in, the full system it's only about 500k, i think

I wasn't at the party, but people say that Unai's explanations about how does chankast work internally and about future Chankast PC requierements were very convincing. He's one of the coders of that tremendous work so i think he probably knows what is he talking about

ETR · Post by **ETR** » Sun Jun 27, 2004 6:50 pm

Wait, Xbox has a friggin Celeron?! If thats true, thats damn hillarious!

az_bont · Post by **az_bont** » Sun Jun 27, 2004 7:00 pm

It's a P3 733MHz.

Post by **Quzar** » Sun Jun 27, 2004 8:40 pm

It IS a p3 733, but with a smaller amount of L2 cache than standard p3s (iirc)

Ian Micheal · Post by **Ian Micheal** » Sun Jun 27, 2004 9:52 pm

Well when the emu runs fullspeed on a 733mhz pc then the xbox will be fine. Pigs may be flying first but never say never.

Not like i ever use it.

int80h · Post by **int80h** » Mon Jun 28, 2004 8:08 am

The xBox does not use a PentiumIII

The xBox uses an Intel Mobile Celeron CPU.
The xbox uses a low power Celeron designed for laptops.
Mobile Celeron != Desktop Pentium III

int80h · Post by **int80h** » Mon Jun 28, 2004 8:12 am

It IS a p3 733, but with a smaller amount of L2 cache than standard p3s (iirc)

Yea, thats called a Celeron.

A Celeron has the same core as the current Pentium chip, but with less cache.

Post by **Quzar** » Mon Jun 28, 2004 2:14 pm

int80h wrote:
It IS a p3 733, but with a smaller amount of L2 cache than standard p3s (iirc)
Yea, thats called a Celeron.

A Celeron has the same core as the current Pentium chip, but with less cache.

I meant smaller yet different than standard socket 370 celerons(or micro-gba 456(?) tualian chips). There is no such Celeron other than that found in the Xbox that has 128kb of L2 cache AND a 133fsb with a tualian(sp?) core. Yes the mobile celeron is the closest thing, but it still isnt what it is.

Tech^salvager · Post by **Tech^salvager** » Mon Jun 28, 2004 3:58 pm

the xbox cpu is more a hybrid of celeron and p3 running at 733Mhz.
I am not sure if it is different then socket 370's seeing that they have moddifed it and put a tualian cpu running at 1.4Ghz

lantus · Post by **lantus** » Mon Jun 28, 2004 8:06 pm

well i've spoken with some of the Chankast devs. First thing to say : they are a very talented bunch of coders so it might be possible to get it running on Xbox.

But the biggest hurdle to overcome would be the dynarec they uses. Its 48 Megs, so you lose 48 megs out of 64 right there without any other mallocs() for the DC system itself.

You could in theory reduce the dynarec size but then you lose performance. We used this approach when porting Surreal64. It works but you get more pauses than normal as the recompiler is generating new instructions.

Storminator16 · Post by **Storminator16** » Mon Jun 28, 2004 8:31 pm

l33t ub3r tech talk over something that will never happen. Yeah.

Post by **Quzar** » Mon Jun 28, 2004 8:37 pm

i second that. the FPU performance of the SH-4 can barely be matched by a standard p3 733, but with 1/4 the cache, i see it as near impossible, especially since ram isnt high speed enough to make up for it.

No box is moving in on the DC's emulation turf

Tech^salvager · Post by **Tech^salvager** » Mon Jun 28, 2004 9:22 pm

Could the GPU be used in any way?

CHANKA FOR XBOX!!!!!

xbox-celery