@Everyone

............................. http://euaejit.blogspot.com.au/ .............................
[quote]
Sunday, January 6, 2013
:dancing banana: (sort of)
After more than four months of chasing my own tail on this problem, I had managed to fix up the JIT compiling to let the Kickstart boot using compiled code. (See disclaimer below...)

*Phew*, there were times when I thought I am not going to write this down ever in the blog. I was this >>

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http://euaejit.blogspot.com.au/

Can I haz time machine?
Another busy month passed, here comes the new update with lots of bug fixes and some freshly implemented instructions:

Implementation of...... see link above for more details

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Might give this a go tomorrow, seeing as the kickstart loads now (albeit due to some workarounds).

@Everyone

http://euaejit.blogspot.com.au/

Watch for the LED - Sunday, February 17, 2013
When things go bogo - Saturday, February 16, 2013

2 news updates in one week.

Things are moving fast in this space, keep a regulate eye on this.

---PLEASE DOWNLOAD THE CODE AND RUN YOUR OWN TESTS---

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@meet.mrnrg
This isnt really clear to me. Is this some kind of Beta? Is the plan to include it in AmigaOS/RunInUAE?. Thirdly how would someone test it without overwriting existing E-UAE which I assume RunInUAE is utilising anyway?

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@djrikki

Quote:

RunInUAE

Is just one tool of many to start E-UAE.

Quote:

Thirdly how would someone test it without overwriting existing E-UAE which I assume RunInUAE is utilising anyway?

How about putting E-UAE different directory and configure E-UAE manually.

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@djrikki

Yeah that blog is confusing me too.. Im wondering once the JIT is done for UAE will we be able to emulate an 060 1200 to play AGA demos???

@realize

Quote:

Yeah that blog is confusing me too.. Im wondering once the JIT is done for UAE will we be able to emulate an 060 1200 to play AGA demos???

Depends on the final JIT speed. 68060 50 MHz has roughly 1/20 of integer performance of 440EP 666 MHz and there are also ther things to emulate (AGA). Eg. DosBox dynamic core reaches only 1/45 of native speed, WinUAE JIT 1/16, Petunia 1/5 etc.

@realize

JIT is improved CPU emulation, not Chipset emulation (Chipset = Graphic chip, sound chip, timing, io ports.), but let's put it this way, the HOST OS, has to emulate CPU, Grpahics and Sound, if CPU emulation gets easier than its more free CPU cycles on HOST machine to emulate Graphics and sound.

So the answer to the question is everything should run smoother.

68060 is CPU whit more CPU cache and data cache, they removed a few instructions to get it run less hot at higher clock frequencies, so it basically a cut down 040, also 68060 has superscalar it enables instructions to broken down and executed in order but two at the time, but this is not important, emulation does not work as real hardware it only tries to get job done, you probably find there is no performance difference under emulation between 68020 and 68060.

Demos and some games check what CPU you have to run optimized code, running program designed for 68040 might run slower on 68060, if there are many missing instructions in the code, (Probably not the case under emulation).

To enable JIT you need to emulate at least a 68020 CPU, because CPU has to have Instruction cache.

Workbench 2.0 and up has support for CPU cache, Workbench 1.3 can fail if CPU cache is enabled.

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New blog post

After another bump on the bumpy road

@MickJT

Nice!

@MickJT

cool

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@Everyone

http://euaejit.blogspot.com.au/

Another update please check: http://euaejit.blogspot.com.au/

Wednesday, April 24, 2013

Mac and cheese... err... Linux

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@Everyone

Sunday, April 28, 2013
Locations, locations, locations

................. visit http://euaejit.blogspot.com.au/ to read more .................

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@meet.mrnrg

great! :)
Im thinking why not include (use) direct the petunia for the 68k emulation in uea jit for amigaos?

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@tlosm

Berceuse UAE jit has to emulates CPU registers, because the way UAE works, while Petunia just maps registerers 1 to 1, and UAE jit has to deal whit emulated memory, while Petunia does not.

UAE_memory = malloc( rom_size + ram_size + zorro_ram + slowmem_size );
readmem (addr + UAE_memory)
writemem(addr + UAE_memory)

I know this because the same problems whit Basilisk II as UAE has.

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@NutsAboutAmiga

Ok Thanks for Your explanetion :)
In my mind i thinked like uae similar to shapeshifter but with an emulate cpu :p

... And when the uae ppc jit Will be' relaased Will be' possibile use this 68xxx jit in basilisk too?

Last edited by tlosm on 28-Apr-2013 at 11:38 PM.

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A 500 + ; CDTV; CD32;
PowerMac G5 Quad 8GB,SSD,SSHD,7800gtx,Radeon R5 230 2GB;
MacBook Pro Retina I7 2.3ghz;
#nomorea-eoninmyhome

@tlosm

I just looked at the Basilisk II website and says it uses the UAE 68k emulation so it looks like PPC UAE JIT could also be used.

@Rob

Quote:

I just looked at the Basilisk II website and says it uses the UAE 68k emulation so it looks like PPC UAE JIT could also be used.

That would be awesome!

Scott

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@tlosm

Yes, it should be possible to use UAE JIT in Basilisk too.
but don't think for secund it will enable you to run PowerPC native programs.

I know where little about how JIT cahce is flushed and if deeper understanding of MacOS is needed or not.

shapeshifter used prepareemu to move AmigaOS out of the way, so the two operatings systems did not collide, this does not work anymore.

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