Coldfire support

[pjhutch]

Are there any plans for Coldfire cpu (68k compatible) support in Winuae? It would be interesting to see how compatible it really is or allow developers to migrate programs to coldfire cpus...

[rare_j]

WinUAE is an amiga emulator, and as no amiga has run on coldfire i'm guessing this is unlikely!

[matthey]

The Natami N68050+ CPU will add ColdFire compatibility. Most instructions through ISA_C will be added. Expected supported CF instructions...

bitrev, byterev, ff1, mov3q, mvs, mvz, sats

Expected unsupported instructions...

intouch, pulse, rems, remu, stldsr, wdebug, wddata, and all MAC instructions

68k compatibility will take precedence so for example, muls.l can set the overflow flag. Also, care should be taken when using CF code like move.l (a0,a1),d0 which will become move.l (a0,a1.w),d0 instead of move.l (a0,a1.l),d0. It's better to specify the size all the time anyway. CF compatibility should be good (97+%?) as most common user mode instructions are supported. All addressing modes of the 68k will be supported where an EA is used in the encoding.
It's possible that 68k+CF Amiga support could spread to UAE and other fpga Amigas if it becomes popular on the Natami. Speed and code density are improved a little while existing CF code can be used mostly without changes. The most useful instructions are mvs and mvz. They should have been included in the 68k long ago.

[Amiga1992]

Natami xD

[TCD]

Originally Posted by Akira

Natami xD

Oh... sorry Yeah, real things first, before emulating them. Second that

[matthey]

@TheCyberDruid
Did you add anything useful to this topic? I can understand other useless comments and possible trolling but a moderator posting a "me too" strikes me as rather odd.

[TCD]

You have something useful to add then matthey? Seeing you mentioning Natami as a reason to add Codlfire support to WinUAE I thought I throw in my 2 cents on the topic. Any problem with saying that there's no Natami to buy yet and there's no reason to add the support for it in WinUAE either then?

[matthey]

Originally Posted by TheCyberDruid

Seeing you mentioning Natami as a reason to add Coldfire support to WinUAE I thought I throw in my 2 cents on the topic.

By agreeing with someone rudely laughing at someone's hard work? Even if the Natami never sees the light of day, don't the people trying to make it happen deserve more respect than that?

Originally Posted by TheCyberDruid

Any problem with saying that there's no Natami to buy yet and there's no reason to add the support for it in WinUAE either then?

I have no problem with you saying that but you had a laughing emoticon at the beginning of your post and a nodding head in agreement with a "Second that" that said so much more.
I think it may be worth adding CF support to UAE before the Natami, especially if a standard could be agreed on. It would allow UAE to be used for CF development and testing, use existing CF code, and reduce the size of Amiga programs. I know most people use UAE for games but there is a lot that don't. Whether it would be worthwhile to implement would depend on how difficult the task would be. For example, it took me less than a day to add CF support to ADis (disassembler). I doubt that CF support will be added to UAE first as my post above reflects. I would like to see it happen though.

[Toni Wilen]

No.

[TCD]

Originally Posted by matthey

By agreeing with someone rudely laughing at someone's hard work?

Huh? You want something implemented in an emulator that's not even out there yet. That's what I laughed about.

Originally Posted by matthey

Even if the Natami never sees the light of day, don't the people trying to make it happen deserve more respect than that?

Sorry, but that's so beside the point, I will just play my 'no comment' card.

[cosmicfrog]

I cant wait CF = CosmicFrog when will I be assimilated

Matthy see tonis answer

as it seems your not up to adding it looks like we will all have to wait .......

[alexh]

Originally Posted by pjhutch

Are there any plans for Coldfire cpu (68k compatible) support in Winuae?

No plans as already said, but WinUAE is opensource.

Developers can pick up the code any time they like and as long as it doesn't break anything I imagine Toni would accept the code back into the mainline if it proved worthy.

[pjhutch]

Thats what I figured.
Thanks for the input guys.