7.15.2009

I just watched the STS-127 crew walkout (again). Weather is still NO
GO for launch.

I also tried to test out this new FPGA module I wrote for reading /
writing memory, but no one was in the Cosmology lab downstairs so I
couldn't get my hands on the Spartan board to test it out. There's
something hokey going on in the simulation that I'm not entirely
convinced would be replicated in real life.

In the picture, you can see that the led[7:0] segment (which should
come up as a number between 0 and 255 inclusive) is coming up as 'ZZ'.
I could understand maybe the data input/output buffer doing something
weird (which it is), but the led output is purely either on or off,
and in most circumstances chooses not to be a set of letters or
shapes.

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