Page Comparison

Summary of the Z88 hardware clocks :

9.8327 MHz : Blink Master Clock (MCK)

   |
   |   /3
   |
  V 

3.2776 MHz : Z80 Clock (PM1)

   |
   |   /128
   |
  V 

25.6 KHz : Blink Standby Clock (SCK)

   |
   |   /8
   |
  V 

3200 Hz : Beeper

   |
   |   /16
   |
  V 

200 Hz : Tick (5 ms interrupt, TIM0 counter)

   |
   |   /200
   |
  V 

...

 The ratios between the Z80 clock and ticks are powers of 2 and thus directly driven by a 15 bits counter where :

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