>> Powermac G5 Quad with Radeon X1900-G5-ed ([...] no lnx)
>I'm surprised that Linux doesn't support this. That's not what I had expected.
Doesn't. At least not out-of-the box. It runs framebuffer with modesetting disabled, but enabling causes 'invalid ROM contents' - it has something to do with Atom bios, which is not present on G5 edition. Standart X1900 cards are reported as working with powerpc linux.
>> For future will be great x64 - here I mean PPC(be)x64 + SMP to utilize
>> todays NG Amigas and old Powermac G5.
>What's "PPC(be)x64"? Some hybrid-ISA CPU yet to be developed?
PA6T, P5020 and PPC970 are >PPC64(-BE), no x64 inside. Btw, Tabor/A1222's P1022 is just 32-bit.
It means PPC64 big endian, with fully-64bit/SMP MorphOS on it. For G5, PA6T, P5020/040, T2080 and whatever obscure.
>> Next makes me sense go to PPC(le) - like Talos or Blackbird
>The nice thing about POWER9 is that it can still run in BE mode for legacy compatibility.
yes. And POWER8 also.
>> migration to x86-64 for me means show stopper. [...] what advantage
>> MorphOS have over Win, linux or unix?
>Linux/Unix also run on non-x64 (ARM, Power etc.).
of course, but ARM in general not yet so powerful like x86-64, so there is a gap for MorphOS.
And both ARM and Power are used by enthusiast - also gap for MorphOS.
But in x86-64 world? I don't know - I am not developer or project leader - it is not my decision. But me personally don't have any reason to use MorphOS on standard PC.
AmigaOS3: Amiga 1200
AmigaOS4: Micro A1-C, AmigaOne XE, Pegasos II, Sam440ep, Sam440ep-flex, AmigaOneX1000
MorphOS: Efika 5200b, Pegasos I, Pegasos II, Powerbook G4, Mac Mini, iMac G5, Powermac G5 Quad