11.7 Bus Mastering and DMA resources
If a bus has bus mastering available, it's unlikely that any resources will be needed for DMA on that bus. For example, the PCI bus doesn't need DMA resources since it has "bus mastering". However, "bus mastering" is often called DMA. But since it's not strictly DMA it needs no DMA resources. The ISA and VESA local bus had no bus mastering. The old MCA and EISA buses did have bus mastering.
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