Michael Buesch wrote: > > > r...@mini:> outb 0x3C4 0x2a #i want to acess register 2A > > > Can you explain how the register access works exactly? > > > Is this MMIO or is this x86 in/out instructions (PIO)?
This is a PIO access to an extended sequencer register in the graphics hardware. It's not reachable through MMIO AFAIU from the data sheet. Read my comment in oc-trac for the full story, basically openchrome most likely changed a reserved bit, and I find it likely to cause PCIe problems because video output and PCIe are closely related in hardware. //Peter _______________________________________________ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
