Forum Discussion
Aflop
Occasional Contributor
Occasional ContributorPCIe with DMA Memory Sizing
Background : I am currently using the Arria 10 GX Devkit in preparation for a similar custom board. I have adapted the PCIe Avalon-MM DMA example which Intel provides and come up with a custom desig...
AflopOccasional Contributor
Occasional ContributorAssigning the address 0x0-0xfff for each on-chip RAM will result in an error because you are mapping 3 different RAM modules to the same memory region. Attached is a picture of the error.
To clarify there is a previous project which has different memory modules mapped to different regions and the lspci command returns the correct sizing of these BARs, i.e. there is a 4K BAR not mapped to 0x0-0xfff. Unfortunately this project was done in AHDL and I do not have the time to decode it.
