At 7:22 PM -0800 2/24/98, Michael G. Schabert wrote:
>>The Quadra 840av if you mean CPU and Ethernet.  About $750 is what I've
>>seen them for.
>>
>>It has the slowest disk driver though, and the stock 1.3 might have some
>>problems with really high speed serial I/O.  I think all the Quadra's share
>>the same SCSI driver though and the CPU makes any deficiencies worth
>>putting up with.
>
>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.

Signature failed Preliminary Design Review.
Feasibility of a new signature is currently being evaluated.
h.b.hotz@jpl.nasa.gov, or hbhotz@oxy.edu