
November 17, 1986
Rob Horning

I went to 3 CA chip video conferences.  They have now given us specs for
all the timing parameters, but they still need to verify that they can meet
some of these.  It will probably be next week when they tape release.
It turns out that the critical timing is not the MID_BUS timing, but
the buffer conflict problem and an internal timing requirement for the
CA.  MC-F does not have this problem.

I prepared for and had the meeting with the people within IHO who are
looking into SRAM's.  It was a good meeting in that now everyone is up
to date on what everyone else is doing.

I spent a full day looking at the clock going to the CA chip on the math
board.  It turns out that there is a problem with the color scope that made
the ringing look worse than it was.  Things look fine once I used a scope
that worked.  I have decided to keep the termination for the clock the same
because the rise time has  more margin than the low level input.  (I was
thinking about lowering the resister value.)

I was asked about a problem with the real time clock not working.  I looked
into this and found that it was no longer working.  It turns out that there
is a UNIX bug that causes the problem.

We met with Jeff Yetter and Tony Riccio to talk about Ultra-fox and what they
are thinking about for memory.  A few issues came up, and we will continue to
work with them to come up with the memory design.

Rand, Darius and I met with a friend of Rand's from General Dynamics to talk
about what they need for workstations.  They needed very high performance but
only mid-range graphics.  A good network is very important to them.

