A delay is specified by an #
character followed by the
duration of the delay in CPU clock cycles. #20
means a delay of 20
clock cycles. Using delays is the only way of separating commands in time. Commands that
are not separated by delays will be executed simultaneously, i.e. within the same clock
cycle. In the current implementation stimuli are only evaluated between CPU single
steps, meaning that the delay may be longer than specified if it would end in the middle
of a multi-cycle instruction.