On Mon, 17 Aug 1998, Colin Wood wrote:

> Hans-Christian Becker wrote:
> > Speking of porting between MkLinux and NetBSD/mac68k, what are the chances
> > of getting any useful DMA information for machines like the (nudge, nudge)
> > 840AV? Wasn't the 840AV kind of a PowerPC sans PPC601 design?
> 
> We already have DMA information for the AV Macs.  This is how we got
> support for the onboard ethernet.  Take a look at
> sys/arch/mac68k/psc.c.  What we don't currently have are a DMA-capable
> SCSI driver and serial driver.  I'm not sure if this is b/c of lack of
> information or lack of time/resources.  Probably more the latter than the
> former.

As I understand it, the serial DMA is rather lame. There's only one DMA
channel. So we can say have DMA transmission or reception, but not both. I
might add DMA transmission support once some other projects are done.
NetBSD has some design issues to deal with before we can really support
receiving w/ DMA.

Take care,

Bill