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Author Topic: Amiga Coldfire project dead?  (Read 31173 times)

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Offline billt

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Re: Amiga Coldfire project dead?
« on: November 17, 2010, 10:53:23 PM »
Quote from: Trev;592583
@Piru

The sarcasm, it stings! It stings! ;-)

@lou_dias



That wasn't exactly what I had in mind. I was thinking more or smallish FPGA or some other piece of hardware that looks like a 680x0 but actually functions as a memory controller, instruction cache, translator, etc. It's probably easier to just wait for a faster FPGA solution and use an existing core.

I'm not sure it's as simple as a chip in the middle to translate instructions on the fly, which sounds sortof like a hardware JIT recompiler. If you only convert an instruction at a time, how does it know if the host CPU is doing a "native" memory access or a "translated" memory access? Or would you not have such a thing as native code running, only translated code? If both are running, you need to know which is which, as native code can go direct to the given address, but translated code may need to go to translated addresses. I think some intelligence would be required to keep track of things. But others may know better.

An example of a software-only thing that only emulates 68K CPU, for ARM host, is Cyclone.
http://notaz.gp2x.de/cyclone.php
« Last Edit: November 17, 2010, 10:59:01 PM by billt »
Bill T
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Offline billt

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Re: Amiga Coldfire project dead?
« Reply #1 on: November 18, 2010, 02:22:26 PM »
Quote from: Amiga_Nut;592762
I meant PPC as in OS4 compatible or any embedded controller type setup people might want to make useable with OS4/AROS/MoS ie non-Apple Mac hardware.


PPC that is OS4 compatible only excludes Apple because someone says so. Why should it not be in the list? Because someone already said so? They're the only PPC laptops worth mentioning. (I'm not excited about that low-end CherryPal thing).

I think it's very disappointing that whoever decided Apple PPC won't be supported by OS4. Be it in an unchangabe contract or whatever that is now, I really wish it was not that way, as Apple PC is really the most sensible way to get an "Amiga" laptop at this point. Believe you me, making a new PPC laptop to satisfy those who make the rules is no easy task, I've been pondering that conundrum for 6 or 8 years and have nothing more than ideas to show for it, and I am an engineer.
Bill T
All Glory to the Hypnotoad!