Re: Linux kernel 3.2.0-3-amiga misses Cyberstorm 1 SCSI

2012-11-19 Thread Finn Thain
On Mon, 19 Nov 2012, schmitz wrote: > No length field - must have relied on the ESP interrupt to terminate the > transfer. I think that for PIO, it doesn't matter. On the other hand, if there is a DMA controller on the board, a schematic would probably answer your question, and PIO doesn't ma

Re: Linux kernel 3.2.0-3-amiga misses Cyberstorm 1 SCSI

2012-11-19 Thread Ingo Jürgensmann
Hi! Yesterday I googled a little bit about Amiga and DMA. There are some docs from the Hardware Reference Manual that have details about DMA transfer within the chipset and everyone mentioned the length of the transfer. Even some caveats were listed, for example that the last 3 bits of every