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Altera_Forum
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10 years ago

Novice: TimeQuest analysis

Hi, I have a pretty basic question that I hope I am asking in the right place please ...... I am using a very old CPLD (a MAX7000) to do the glue logic for a Z80 computer that I have bui...
Altera_Forum's avatar
Altera_Forum
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10 years ago

Using a combinatorial signal like q[2] as a clock is a bad practice. TQ can hardly analyze it properly and it could lead to problems with counter2.

The correct solution would be using the global clock for both counters and use q[2] as a clock enable signal for counter2.