No PCI DMA on classic Amigas, there is no PCI hardware with DMA support (except for the unsupported, because of no hardware docs, G-Rex).nbache wrote:So on an A1 (or classic?), the *_xfer variable is still needed if you want DMA modes.
I don't know what happens on classic Amigas if you set _xfer to a DMA mode, but at best it just crashes or freezes without destroying your data.