Cold Fusion accelerator

[AJCopland]

That's a shame I was really hoping that you'd be the one to pull it off. Good luck with your other projects.

Andy

[AJCopland]

lou_dias, it really really ain't that simple.
Besides which the CF has an emulation layer precisely for the purpose of emulating unsupported instructions (ignoring the remaining compatibility issues that itself causes).

The problem that i think Oli_hd is referring too is actually getting the existing data & address bus used in the Amiga to talk to a Coldfire V4 or V4e cpu as they must be somewhat different. That might require some kind of bridge that converts and syncs the signals between them. It could be done in an FPGA or something similar but it's possibly a lot of work and quite detailed at a technical level.

I'll leave that for someone else to discuss as I'm meandering on none coding land adn getting scared :-D

Andy

[AJCopland]

Half of what you said made no sense to me :-D

So, making it as a bridgeboard (sticking it on PCI just means dealing with add PCI prob's to my mind) and using it as a co-pro makes more sense? If you, or someone else, could do such a thing would that mean that the built-in 68k would still be the main processor and software/libs would need to be written specifically for it rather like the normal custom chips and/or PPC?

Seems a bit of a shame... so when can we expect that version :-D

Andy

*edit: I jest I hasten to add! Before someone takes my idea the wrong way.*

Oli_hd wrote:
Yeah there were a few things, getting all the interupts out of the V4 was a pig (hacking the serial port to output int2 for example) and a lot of other similar things which may not have stopped the card working on its own but overall it just didnt work.

If you were to make a Coldfire co-pro for a normal 68K then a PCI or Bridgeboard solution would be the quickest, and just like the PPC it could lead to a CF native motherboard after a while... that wasnt my goal though.