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Author Topic: FPGA for dummies  (Read 32010 times)

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Offline alexh

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Re: FPGA for dummies
« on: December 07, 2011, 10:58:44 AM »
FPGA's are nothing like CPU's. And certainly nothing like software emulation using a CPU.

Software emulation is a re-creation of the hardware in an abstract model. Whereas FPGA's can re-create the logic of the original 1:1 (if the original logic definitions are available).

The similarities between what has been done with FPGA's and what has been done with software emulation stems from in both cases the original logic definitions were NOT available and so had to be reverse engineered and re-created (often with mistakes due to largely undocumented features.)
 

Offline alexh

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Re: FPGA for dummies
« Reply #1 on: December 24, 2012, 09:07:12 AM »
As many have said, it is not emulation. It is re-creation. Like all re-creations how accurate it is depends in the information you have on the original.

AGA was also a re-created Amiga chipset but the engineers had the original design chip schematics, something the developers today do not have.

Quote from: cunnpole;720128
I'd be surprised if anyone would disagree that it will be hell of a lot closer to the original hardware that we love than WinUAE
I disagree. :-P

Why doesn't WinUAE 'feel' like your original Amiga? I ran WinUAE on my Iiama Vision Master 450 Pro at 50Hz with VSYNC for many years and it felt very close. Could it be your setup? I used a monitor capable of an exact multiple of the Amiga framerate (50Hz, 60Hz, 100Hz) forced this using powerstrip and enabled VSYNC. This makes all the difference to me.
« Last Edit: December 24, 2012, 11:16:35 AM by alexh »
 

Offline alexh

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Re: FPGA for dummies
« Reply #2 on: December 28, 2012, 01:45:55 PM »
Quote from: gaula92;720228
WinUAE runs under a defective OS. Windows is a broken OS. it's a broken and immoral OS you're running under the hood anyway. It's NOT how an Amiga looks and feels.
I'm getting the feeling you don't like Windows?

Replace WinUAE with FS-UAE and re-read :)

Quote from: gaula92;720228
It looks and feels exactly the same. Response is the same. It isn't a total and absurd waste of resources like WinUAE solution is.
Maybe a waste of resources but it is a hell of a lot cheaper! (P.S. They don't feel the same...)