66. count

count is a counter mechanism that is clocked by a trigger signal clock. It will count from 0 to max, with different counting modes set by the mode parameter.

mode 0 is wraparound mode 1 will count up to max, then spit out -1

(define (count clock max mode)
  (param clock)
  (param max)
  (param mode)
  (rvl "count"))

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