Micro A1-C, overclocking, PCI cards, etc..

I was reading Sailor's exceptional article at https://intuitionbase.com/articles/ami ... i-bus-hardware-interrupts, and I wonder if any PCI interrupts manipulation could make the gfx card work.

Any ideas, knowledge sharing or findings will be great to be discussed.

@walkero
Which graphics card on which hardware? What are you referring to that does not work here?

@walkeroQuote:

Thanks. I haven't tested Micro in such detail, but I don't think manually adding interrupts will help.

The reason for my assumption is that Micro has a built-in DMA fix, which (I don't know how) causes greater incompatibility with PCIe graphics cards. This also menioned here by Hans.

I tested two PCI graphic cards in Micro with no success. Unfortunatelly I have no logs from this.

@walkero
Quote:AFAIK the MicroA1 includes the utterly broken "DMA-Fix".
AmigaOne SE/XE without "DMA-Fix": All AGP and PCI66 gfx cards work without much problems, most PCI33 cards, incl. PATA (Sii0680, it8212), SATA (Sii3112, 3114, 3152), USB 2.x and Ethernet (NEC/RTL) work as well. But next to none of the onboard hardware (VIA686 PATA only works in PIO modes, but not reliable in (U)DMA) modes), the 3Com Ethernet doesn't work at all, VIA686 USB neither, or only very unreliable.
With "DMA-Fix": Onboard VIA686B IDE works in (U)DMA modes, 3Com Ethernet works, VIA686 USB works (but only as long as it's not used at the same time as the 3Com Ethernet, and apparently only when using a powered USB hub and not the USB motherboard ports directly). But neither the AGP/PCI66 ports for gfx cards work any longer, nor are any PCI33 cards working reliable (interrupt problems, DMA problems, ...).