Question: 1. What is the meaning of data setup time and data hold time? Can either of these values be zero? Can they be negative? If the answer is yes to either of the last two questions, what does it imply?
2. The 68000 bus cycle lasts (4 + n)t, y , seconds, where n i s the number o f pairs o f wai t stat e s introduced. This expression implies that you can increase the duration of a bus cycle only in increments of whole clock cycles. Can you think of any way around this restriction that would enable you to extend a machine cycle by, say, 0.7t, y , seconds?