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Author Topic: Emulating OCS, ECS, or AGA chipsets  (Read 3846 times)

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Offline mel_zoom

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Re: Emulating OCS, ECS, or AGA chipsets
« on: May 13, 2007, 11:45:36 AM »
Im not sure I understand this - there hasnt been a new chipset released since AGA and that was so long ago now. That means that anything requiring the native chipset must be of a similar age and so probably doesnt require much CPU power either - old games are likely to be the majority. Now I like these as much as anybody but...

What I am trying to say is that any software that is newer and benefits from more power is already OS friendly and ready to run on more modern hardware. Older software that does depend on the chipset directly probably runs just fine under an emulator like UAE running on the same machine. Other than the fact it doesn't appear to be a seamless integration what is wrong with that?

Is there any software that depends on the chipset directly and requires more power than this to be useable?
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Offline mel_zoom

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Re: Emulating OCS, ECS, or AGA chipsets
« Reply #1 on: May 13, 2007, 01:44:58 PM »
"Rendering programs, anything using a lot of ram image editors etc, sound editing progs etc. Anything that take things and applies large batch style processes to them etc."

How many of these depend on the native chipset? Even the oldest version photogenics I remember tinkering with would run on RTG as well as its HAM modes.

"Games etc it won't matter to in most cases, with faster new hardware you'd possibly see less chugging than on a standard amiga chipset, but you also might get the game running at many multiples of the original speed if it hadn't been coded to avoid that. "

UAE has a speed control though doesnt it? Ive seen an option to match A500 speed. Im sure it wouldnt be impossible to do the same for A1200 and some other base models.

"Then there's compatibility issues with emulated hardware. UAE is pretty good at dealing with most of them but there's still a few."

Perhaps but then any new hardware emulation would have some problems too - especially when you have to graft it into a quite alien system. At least we know what UAEs problems are and its also lot easier to fix software than hardware.
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Offline mel_zoom

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Re: Emulating OCS, ECS, or AGA chipsets
« Reply #2 on: May 13, 2007, 01:58:46 PM »
Well not exactly. I asked which applications that depended on the chipset in order to run that in turn would not run adequately enough under emulation in order to require a hardware chipset. Or at least thats what I was trying to ask :-)

The class of applications you listed at first are all mostly not dependent on the chipset and so werent really the examples I was looking for. These programs should run fine with just CPU emulation.

Which brings us back to my original point. What is the real point of such a hardware chipset emulation for newer systems?

What applications are there that must have the chipset present in order to run that will not run perfectly well - if not a lot better - under UAE emulation than they did on the hardware available when they were released?

I agree it would be nice to see UAE-like chipset emulation built into OS4 and so on but I don't see the why it needs to be a hardware based solution.

Actually the main use I can see for hardware chipset emulations are as replacements for ageing amiga classics.
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