Subject: Re: Fastest NetBSD 68k computer?
To: Henry B. Hotz <hotz@jpl.nasa.gov>
From: Michael R Zucca <mrz5149@cs.rit.edu>
List: port-mac68k
Date: 02/27/1998 03:01:57
> >Well, the SCSI performance will increase to where it should have the
> >fastest performance in the mac68k world if they get the DMA working, which
> >as Colin mentioned is being looked at. Why would you say that 1.3 might
> >have problems with serial I/O? While I don't exactly tax my serial port,
> 
> There were some issues relating to interrupt priority.  I recall a concern
> being expressed that putting the mace (av-motherboard) ethernet driver at
> high-enough priority to get full performance might impact the serial port
> interrupt response.  I really can't speak to the details.  Allan Briggs or
> Bill Studenmund (or our portmaster Scott, of course) might know how it all
> settled out.

Well, if I remember right the AV's are also capable of doing serial DMA. So
perhaps if Bill feels up to it... :-) I think it's pretty cool that we
managed to get DMA ethernet into the kernel so fast.