CSC270 Exercises on 6811 I/O designs

--D. Thiebaut 10:51, 18 April 2012 (EDT)

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This exercises relate to 6811 I/Os and different design options and tradeoffs.

Exercise 1: Output Design

• We saw a design in class where we use the same Yi output from the decoder to activate the clock inputs of several flip-flops. The problem (or potential problem) is that if we want to change one of the flip-flops only, we are forced to change the others as well, so the software must remember what is stored in the various flip-flops at all time so that changing one can be by changing all.

• Figure out another design that would allow us to only update the flip-flop we want to change without updating the others that remain unchanged.