JIT in EUAE for AmigaOS4.x how to motivate someone :).

At the beginning I just would like to say I have no ANY idea what is JIT for EUAE :), but I know that this will greatly increase a speed of emulation... or something like that. It's about the speed.

Yes, I know that I don't know.

But I know ONE think :). Sam's are coming and I'm pretty sure I will have one next 10 days in my apartment (thx to Amigakit/ACube!) running AmigaOS4.1 (thx to Hyperion!)... and since I don't like using UAE on my PC (I really don't know why? ;) ) I'm planning to use it on my Sam440ep.

This what I know about EUAE today for AmigaOS is really SLOW (something around 020?), for games it's nice... but for something different... my 040/40Mhz is to slow :D.

So... Who is mighty ;) to do this? This would be really nice software for Sam440ep... especially today where we have Amikit, AmigaSYS and some software is really good under AmigaOS3.x. Fast and beautiful :).

Is is about money? Lack of time? Hobby excuse? or...

BTW. My some is pre-ordered :). Amigakit.com thank you for your time!

@Kreciu

Suggest it as a bounty on http://amigabounty.net perhaps?

@Kreciu

One problem is that EUAE is not that needed in the first place for programs.

I think if get bounty that so large that one developers of existing JIT PowerPC emulators (Trance, Petunia) get tempted.

@Kreciu
I think that a JIT in EUAE it's a nice idea, but
on OS4.1 generally you don't need EUAE for
something that it's not a game, the 68K (with JIT)
emulation work very well on OS4.1 so generally
no need for EUAE.

The best thing for all the sam user out there is to program the fpga in the sam board like the minimig, so that anyone can runs its game directly on the workbench screen

@nubechecorre

Or think about something like "petunia" as a "hidden" EUAE... you just click on DMF/ADF files or some whdload digested ;) game and software is doing everything. My responsibility would be only install a ROM's for different Amiga's.

Something like highly advanced petunia... with the emulation of custom Amiga chips.

This would be AMAZING (better like using MacOS9 under OSX), way nicer and cleaner solution :).

I know I'm dreaming....

:D

@Kreciu

is the same thing that i said, if you program the fpga on the sam board you only need a double cick on the adf to run the game or program..

Btw you can already do this using GLUAE, it is an utility made in arexx which allow the user to run a program or a game simply double clicking on the icon..

@nubechecorre

I see I will have some fun with my AmigaOS4.1 and Sam.

Have fun with Sam... heh ;)

I'm curious how the AmigaOS4.x differ with AmigaOS3.9 :). Not only the speed! (this I could check on PC under UAE...).

@Kreciu

I don't use classic AmigaOS 3.5 anymore,
some times run some games in E-UAE but thats all.

@pvanni

yes it is needed.
there is no custum chip emu in jit or AGA

i have a seckund partion with os 3.9 running and it is not
good. try scala og tornado or imagine with euae.


any thing beoynd amiga a500 is sucks. and only software that did not use AGA run with jit...

i will try to do some video editing with scala mm.

but i dont think it will run good anuf for real time video.


i have this vga to pal converter bypass so i have both tv and my lcd monitor.
my plan is to get an hdd redcorder that can do transfars via usb 1.1 then copy back, edit,record and play agen.

but euae is too slow....


pal-AGA/chipset EMU is maby the solution

cant understand way the amiga forever dont do it. or the pepole behind jit. maby someone else.


lets put up an bounty

@thread

I, for one, would like to see the LLVM JIT used in an Amiga emulator. It's open source, it's written in C++, it's portable to all of the major OS vendors' operating systems already, and it is promising to be a nice replacement for the GNU tools for compiler construction.

Can any body tell me (in the simplest possible way!) what is this JIT doing :D

Hi,

@Kreciu

i will try this :P

O.K. ...
You have a wooden board and an nail and an hammer.
Then come a chinese and an chinese<>your-language translator.

With non JIT:
the chinese say to the translator "you are to take the hammer"
- the translator translate it to you and you take the hammer.
The chinese see it and is contently.
Then he say "take the nail" to the translator - he translate
und you take the nail.
The chinese see it and is contently.
Then the chinese say "put the nail on the upper ends of
the wooden board" - the translator say it to you and you
put it on the upper ends.
The chinese see it and is contently.
Then the chinese say "impact now the nail with the hammer" and
the translator say it to you.
You get finaly the nail in the wooden board and the chinese
is happy and go away.

With JIT:

The chinese say to the translator "he musst impact the nail on
the upper ends of the board" - the translater say it to you,
you take the hammer and impact the nail on the upper end of
the wooden board as fast at you can.

You see the result is by both way the same.
But the JIT is way faster,he doing things at the best way HE think.
Problems come in,MUSST the work doing exact at the same way
as on 68k, this is then inkompatible with JIT.

I Hope you understand :P

R-TEAM

@retro

imagine work well on AOS4.1 (never user AGA in imagine)
even the WarpOS part work with the last WarpOS
emulation.
For Scala I don't know but we have Holliwood, it has
even a Scala plug-in.

@Kreciu
about JIT you can also read this:
http://en.wikipedia.org/wiki/Just-in-time_compilation

to make it more simple and less metaphoric let's say that the JIT converts (compiles) in real time 68k code to PPC code (in the amiga context).

read this :

http://en.wikipedia.org/wiki/Just-in-time_compilation

@SoundSquare

Definition from Wiki much easier to get than hammer and nail ;), but I appreciate the explanation of that to!

Now I know what does it mean JIT :D. I didn't even realize that this is official name!

Thank you again, and I think we need the bounty...