Is LinuxUAE on aPPC "Accelerated"???

[newbee]

Team

I like many others here will be getting our AmigaOne computers soon.

Since OS4 is not released we will be forced to use LinuxUAE.

Since the AmigaOne is a "real" PPC system I was jsut wondering.

Does the UAE only give the "standard" emulated chip support or will it allow PPC support as well (eg appearing to the OS as  a PPC accelerated Amiga???)

It would be a real pitty if the UAE restricted the OS to "classic" chips support only .

Regards
Darren

[bhoggett]

Standard 68k emulation only. No JIT, no PPC.

[newbee]

Help coders please!!!!

Is it too late to beg you coders out there to see about updating the LinuxUAE to include the stuff we take fro granted on the "windows version" eg JIT???

I can live without the PPC being used as an accelorator, however not having a JIT will make it almost too slow to be usable :-(

Regards
Darren

[WalkernyRanger]

No JIT!?  I accidentally tried running  UAE w/o JIT once, it is dog slow.  Even on my P42ghz.  I think I will wait for OS4.

It's not the "windows" version that has JIT, it's the x86 version. There is JIT for UAE-linux --- but only on x86. If there was a Windows for PPC, WinUAE/PPC wouldn't have JIT.

[newbee]

@umisef

It's not the "windows" version that has JIT, it's the x86 version. There is JIT for UAE-linux --- but only on x86. If there was a Windows for PPC, WinUAE/PPC wouldn't have JIT.

How ironic, that Amigas have been using PPC accelerators for ages and it is the worst supported for Amiga emulation...

Does anyone have first hand experience of UAE on a PPC platform. Is it as slow as you would expect (without JIT) or does it do some other "code majic" that results in it being usable???.

There MUST be a 68xx JIT that could be incorperated into UAE... (does the MacUAE have a JIT???)

Regards
Darren

[JurassicCamper]

I agree it would be nice to have a JIT engine in the LinuxPPC uae. With Warpos support would be great. But you must understand like myself you have bought an early bird system and as a consequence you'll have to make do with linux and uae and a bit of hardship for a couple of months. I like to think you will get at least 060 speeds out of the G4 if not a bit more.
I just wish Eyetech and Hyperion would get this bloody supported agp / pci card list out ASAP.
Christmas is coming and theyre bargains galore that  we are going to miss out on otherwsie.
Maybe its all a ploy so we have to pay over the odds for pc stuff from Amiga dealers. :-D  :-D

>I like to think you will get at least 060 speeds out
>of the G4 if not a bit more.

Don't count on it. Looking at the 0.8.15 UAE source, I can't find any PPC specific optimizations at all. That means that each 68k instruction that sets any processor flags will spend a _lot_ of time calculating the 68k flags, in pure C code.

Each 68k memory access involves chasing two pointers, one calculated subroutine call, a masking operation, a variable lookup, an addition, and finally the memory access itself. PC133 memory is faster than the stuff on the 060 cards --- but it's only so much faster, and that's a lot of hoops to jump through for each memory access.

Let's face it --- UAE on a 800MHz PPC board is a remarkably bad way to run Amiga apps. You can think what you want about the AmigaONE and what it is supposed to become one day --- but *today*, it is one of the worst value-for-money choices when it comes to running Amiga programs.

[Jose]

Come on a G4800mhz will be fast. Have any of you actually seen it working on a Mac with Linux? Then shut up!  ;-) I haven't either, but I don't belive it will be that slow even without JIT.
Then just wait for OS4 and it will fyyyyyyeeeeee. You have waited so far so hang on some more seconds for the real thingy :-D

[bhoggett]

Since he is "lurking" incognito, let me shed a bit of light here:  :-)

People, please welcome "umisef" to amiga.org. In his dull humdrum everyday life he is known as Bernd Meyer, and is therefore not unfamiliar to most of you.

Welcome to amiga.org, Bernie. Hope I haven't spilled the beans too early.

[Jose]

Lol, ok forget what I said.
Hmm, you have spilled the beans too early...

[Balti]

O.k. got Linux-UAE (no JIT) here on my XP1600 and get
060 speed at best (feels more like 040).

No PPC-optimization and surely no Altivec-support, so
"standard" A4000 with slow Z2-GFX-card is what you can
expect.

[JurassicCamper]

Does this mean there is a PPC Amithlon... or similar.

>Does this mean there is a PPC Amithlon... or similar.

No! Emphatically, strongly, unambiguously no. Most decidedly, definitely, unarguably no. Certainly, without a doubt, and in any possible case, no. OK?

As for "lurking anonymously" --- that wasn't even intended. I tend to forget that not everyone knows me as "umisef" (I have been using that nickname for, uhm, *cough* years now, all over the place, so it feels like a second name to me ... And also that a.org doesn't show the email address for a nickname.

[DethKnight]

ah, thx for the info, more reasons for me to adopt aros