os 4.0

[A6000]

Flashlab wrote:

bloodline wrote:

A6000 wrote:
O.K, What is needed now, is for someone to write a PPC emulator for the 680X0 processor, it may not be fast, but it could be usable.

It would be in no way usable... unless you like slideshows of desktops...

I doubt that was a serious post...

It started out as a joke, but then I thought, why not?

A CISC processor does more work per instruction than a RISC processor so a JIT emulator could interpret several PPC instructions as one or two 68k instructions.
Also the PPC runs at only 200/400mhz which is not necessarily that much faster than a 68060 running at 66-100mhz.
If OS4 takes off, then the classic fans must either buy a PPC or emulate one.

It would be no good for games, but other future programs which do not depend on speed could be used, maybe?.

[jj]

Are u mad, a 060 could not emualte a ppc at anywhere near a useable level

otherwise we wouldnt bother with pcc

[A6000]

There are many people who are quite happy with the speed of their 7mhz 68000, there could be people with 060's who would be happy to emulate a slow PPC if it means their classic amiga can run new software written for the PPC.

[orange]

well, I got ppc and no OS4.. and be willing to buy it if price is right  ;-)

[Flashlab]

Let me ask you this; do you enjoy running Win95 in an Amiga emulator like PCTask and find that usefull? Well, I don't.

I don't think any real 68k CPU could even come close to that performance when emulating a PPC.

[bloodline]

A6000 wrote:
There are many people who are quite happy with the speed of their 7mhz 68000, there could be people with 060's who would be happy to emulate a slow PPC if it means their classic amiga can run new software written for the PPC.

You don't realised that the speed of an old RISC architecture like the PPC comes from taking advantage of Hardware features and limiting the ISA to avoid the limitations of the hardware.

There is no way one could run a PPC emulator on a 68k machine at any speed greater than one frame every 5 seconds... I dread to think how slow the MMU emulation would be...

[Piru]

@A6000

A CISC processor does more work per instruction than a RISC processor so a JIT emulator could interpret several PPC instructions as one or two 68k instructions.

That'd work for only for VERY specific instruction sequences that are very unlikely to occur anyway. So this idea doesn't work, sorry.

Also the PPC runs at only 200/400mhz which is not necessarily that much faster than a 68060 running at 66-100mhz.

It is much faster. PPC does 3-5 instructions per clock cycle. 060 doesn't even do 2 in average, and some instructions take huge amount of cycles.

[morduk]

Total cost for me was 114 US dollars.  Anyone want the softawre make an offer.  Never used.  Thinking about getting one of those PPC boards if .........................

[AmigaMance]

[A6000]

OK, I accept that it is absolutely impossible to emulate a PPC on a 68060, so if no company makes new PPC accelerators then we must resign ourselves to eventually having no choice but to run amiga anywhere, if it will run on classic amiga's.

[Flashlab]

I highly doubt that Amiga Inc. will ever make a piece of software that would run on any classic Amiga. What the heck, you could just remove "classic" from that last sentence and it would also be true, sadly...

[maffoo]

Is it possible in theory to emulate PPC on 68k? Obviously not practical on real hardware, but as Intel processor get faster it could be interesting to run OS4 through emulation on UAE :-) (This assumes that UAE never gets any sort of BPPC/CSPPC emulation, which would be much better.)

[Piru]

Of course it is possible. It's just very slow. Because it's so slow, no-one is likely going to bother with it.

x86 has several ppc emulators: qemu, pearpc, softpear, sheepshaver.

[Flashlab]

Wouldn't it be easier to just have the PPC emulated directly? Oh, wait a minute that already exists; PearPC!

[A6000]

If we want to run OS4 on a pc we would use pearpc or similar, would the pc also need to run windows or linux?

[A1260]

@morduk

have you been living under a rock and never read anything on the nett that is amiga os4 related, before you did buy it?...

 :-o