What determines whether a GPU will be supported?

Does MOS whitelist the GPU chip itself or the configuration?

https://www.techpowerup.com/gpu-specs/?architecture=R500&sort=generation

There are many "different" chips but with same config of TMUs etc so effectively the same? OK, some differ with VRam being DDR, DDR2 or GDDR3 which I could understand could be an issue.

MOS says it supports:
ATI Radeon X1300 (no W3D)
ATI Radeon X1300 Pro (no W3D)
ATI Radeon X1550 (no W3D)
ATI Radeon X1600 (no W3D)
ATI Radeon X1600 Pro (no W3D)
ATI Radeon X1800 (no W3D)
ATI Radeon X1900 GT (no W3D)
ATI Radeon X1950 XT (no W3D)
ATI Radeon X1950 Pro (no W3D)

But
Radeon X1600 PRO & X1600 XT are same GPU, same memory type and size and same TMU etc config but X1600 XT isn't listed?

And ATI being ATI means there are MANY different configs of X1600 Pro (DDR2 etc) to add to confusion

Personally I am looking at a GDDR3 X1650 Pro to buy... its R535 but the config is same as "compatible" GPUs... No idea if it will work?

It's an oversight. An X1600 XT and X1650 Pro will both work. Happy GPU hunting :)

-What about a flashed ATi X1900GT? I'm getting a white screen on MOS in my G5 (11,2)... Works fine with OSX Tiger & Sorbet Leopard.

https://forums.macrumors.com/threads/radeon-x1900-g5-mac-edition-cheap-n-easy-flashing-guide.2308103/

@Amiga_Dave

Did you try the other output on the card? Still, no guarantees if it's a flashed card.

Thank for the quick reply, yes I did and I even rebooted... I also posted some questions in MacRumors > MorphOS Thread...

https://forums.macrumors.com/threads/the-morphos-thread.2294963/page-4?post=31148894#post-31148894

"Flashed cards are hit and miss with MorphOS.
With a clear emphasis on "miss"....."

[ Edited by Amiga_Dave 08.06.2022 - 07:23 ]

Just an FYI, I've been using the nickname AmigaDave since around 1987 on just about every Amiga related forum website, and many years here, so don't be surprised if several people in the overall Amiga community get confused and mistake you for me. I'm not writing this to influence you to change your nickname, just to make you aware of any possible confusion that may occur in the future.

> I've been using the nickname AmigaDave since around 1987
> on just about every Amiga related forum website

...whereas the first Amiga-related forum websites emerged only about a decade later ;-)

Yes I'm very aware...
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=38&topic_id=13014&post_id=148133&viewmode=flat&sortorder=0&showonepost=1
Quote:
Quote:
:D


[ Edited by Amiga_Dave 08.06.2022 - 09:04 ]