> isn't PCI addressed via a bridge chip?

Yes, behind two bridge chips (PCIe-PCIe, PCIe-PCI) actually.

> That might complicate accessing and detecting PCI cards.

Indeed.

> I think it's best to use what PCI-E cards we can, wait
> for some further development, and just deal with it.

Unfortunately, that doesn't seem to be a good option for OS4 users who also want to run MorphOS.

> like all cards with memory above 128MB [...], the extra memory lays unused.

Above 256 MiB.

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=12462&start=51
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=12462&start=61

> are 1, 2, or 4GB cards going to provide much beyond faster gpus and memory?

They are providing the possibility to use one and the same graphics card for OS4 in 3D and for MorphOS at least in 2D :-)

The X5000 U-boot recognizes all pcie and pci cards installed at boot.


Quote:



[ Edited by Spectre660 30.10.2018 - 08:10 ]

I've tried a Sapphire X1550 512MB PCIe card in my X5000 and it seems it cant even see it at power on. This card was listed as supported as well. Its a shame. I have heard it supports 3D under MorphOS.

> I've tried a Sapphire X1550 512MB PCIe card in my
> X5000 and it seems it cant even see it at power on.

That's unfortunate. Another MorphOS/X5000 user got both an X1550 and an X1650 to work:

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=11137&start=815
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=11137&start=823

> I have heard it supports 3D under MorphOS.

Yes, since MorphOS 3.8.

@Acill

The X1550 I had installed on my X5000 was a Sapphire 256MB model with DDR2 ram so am perhaps there is a subtle difference here with the one you have tried..

The X1550 series does appear to be a little hit and miss as when I was doing a little bit of research I came across the following which highlights that for some X1550 cards the U-boot May not appear.

http://hdrlab.org.nz/projects/amiga-os-4-projects/radeonhd-driver/radeonhd-driver-hardware-compatibility/

I’d try to find a X1650 instead as the performance for 3D in MorphOS was much better, but the one I was using does not output via DVI in MorphOS.

@thread

Any idea how close the development team are to being able to support the 7750 series cards?

> MorphOS doesn't work with multiple GPUs. What a shoddy state of affairs.
> There exists no reasonable multi-boot solution for this computer.

There will be:

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=13303&forum=3&start=4


There is:

"X5000 hardware support was improved to handle two Radeon cards"
https://morph.zone/modules/news/article_storyid_2574.html

"Tweaked the PCI address mapping on the X5000 to accommodate a Radeon on the PCIE1 bus"
https://morphos-team.net/releasenotes/3.17

[ Edited by Andreas_Wolf 02.05.2022 - 09:47 ]