Enter the Dragon or enter the vapor?

[AJCopland]

We'll get no real answer to all this until we get an actual Coldfire based accelerator.

The compatibility issue is seemingly no worse than going from 68040 to 68060 and everything that wouldn't work we'd either have to pre-process, emulate or shunt back over to the 68020 (in A1200 or whatever).

Can it be done? Yes, will it be done. Who cares anymore.

[AJCopland]

eslapion wrote:
Here is another project I have located for the Amiga that is based on the Coldfire.

http://www.cdtv.org.uk/coldfire/

That would be Oli_hd's project that has fallen on hard times.

The difficulties of developing such a thing on your own are quite amazing I'd imagine. Still he did seem to get pretty far with it all, certainly at the electrical level, not so sure on the software running front.

I've always hoped he'd open source everything if he didn't plan to take it any further *hint-hint* :-D

Andy

[AJCopland]

Oli_hd wrote:

I've always hoped he'd open source everything if he didn't plan to take it any further *hint-hint*

Wouldnt help Im afraid, my problem was with the coldfire/68K bus interface with the V4 CF.
A V4e CF card may work, assuming you used the PCI bus of the CF as the interface between the CF and the miggy while keeping all address mapped correctly.

That seems to be a problem even with the 68060 etc accelerators too (though different I admit) would it require something like the GAL arrays or FPGA based bridges that they use to translate bus addressing and data signals?

Oli_hd wrote:

I have backtracked to the MCF5206 Coldfire which seems to have a bus that may suit the miggy more (There isnt a 5406 though, so if this did work I dunno where it would take me, except freescale have put up a "Make your own Coldfire" proggy which you build from the basic blocks and when the design is done it gets e-mailed to Freescale... what happens then I dunno, if enough people want the same thing maybe it gets made)
Im also doing a few other bits just to get more insite into miggy specifics. (AKA Im playing about with stuff)

Isn't the 5206 even less compatible with the 68k line than the 54XX series though? Or are you approaching it as a co-processor this time rather than a replacement host cpu?

Sorry for all the questions but it was reading about your CF project that prompted me to dig out my A1200 again and re-catch the Amiga bug... Dennis and the MiniMig just sealed the deal :-D

Andy