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Author Topic: C128 in an FPGA?  (Read 9787 times)

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Offline mikej

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Re: C128 in an FPGA?
« on: March 12, 2013, 07:02:04 PM »
Quote from: PJM;728925
The MIST board would be perfect for this. At least you can build that one yourself. It's based around the Cyclone III and is pretty new. Supports USB rather than PS/2 ports.

I'm currently in the process of building one to run the minimig core on.


Replay supports USB as well now.
Not so many people wish to build their own, having built a few I don't either....
/MikeJ
 

Offline mikej

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Re: C128 in an FPGA?
« Reply #1 on: March 12, 2013, 09:22:09 PM »
Quote from: PJM;728935
Nothing wrong with the FPGA Arcade, its a well designed feature packed board worth the asking price, if anything it will drive forward support for new minimig cores and more. I just enjoy building the boards so unless a kit is ever offered it won't be for me. .


I'm happy to send you a kit of parts if you fancy building one, I find the SMD machine a bit easier though ;)
 

Offline mikej

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Re: C128 in an FPGA?
« Reply #2 on: March 14, 2013, 08:04:58 PM »
Work is being done to model the SID analog filters in the digital domain.
The Replay board has a high-quality 24bit/192K DAC so it is as transparent as possible.
I don't know how close we will get, but it should be a very good approximation.

I have talked to a number of people working on this over the last few years.
/MikeJ
 

Offline mikej

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Re: C128 in an FPGA?
« Reply #3 on: March 14, 2013, 10:17:57 PM »
Quote from: Linde;729187
The state of software emulation of the SID is already amazing! I hope the efforts made in software emulation since I first started using VICE are related to what you are speaking of, mikej.


To some extent, in that the hardware analysis has already helped the software emulation.
With detailed die scans of the chip, the filters and other analogue components are understood at transistor level now. While we cannot emulate this behaviour directly in the FPGA, it is possible to model with DSP in the same way - possible better - than the software does.
/MikeJ
 

Offline mikej

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Re: C128 in an FPGA?
« Reply #4 on: March 14, 2013, 10:27:43 PM »
Oh, which SID software emulation do you think is most accurate?

ReSid?
https://bel.fi/alankila/c64-sw/index-cpp.html
/MikeJ