avr-device 0.8.1

TC0:
  TCCR0:
    _delete:
      - CS00
      - CS01
      - CS02
    _add:
      CS:
        description: "Clock Select"
        bitRange: "[2:0]"
    CS:
      _replace_enum:
        NO_CLOCK:      [0, "No clock source (Timer/Counter stopped)"]
        DIRECT:        [1, "Running, No Prescaling"]
        PRESCALE_8:    [2, "Running, CLK/8"]
        PRESCALE_64:   [3, "Running, CLK/64"]
        PRESCALE_256:  [4, "Running, CLK/256"]
        PRESCALE_1024: [5, "Running, CLK/1024"]
        EXT_FALLING:   [6, "Running, ExtClk T0 Falling Edge"]
        EXT_RISING:    [7, "Running, ExtClk T0 Rising Edge"]
TC1:
  # TCCR1A is too complex for me to implement right now, because it has 3 different
  # modes depending on bits which are set elsewhere.
  TCCR1B: # ICNC1 ICES1 - WGM13 WGM12 CS12 CS11 CS10
    _delete:
      - CS10
      - CS11
      - CS12
    _add:
      CS:
        description: "Clock Select"
        bitRange: "[2:0]"
    CS:
      _replace_enum:
        NO_CLOCK:      [0, "No clock source (Timer/Counter stopped)"]
        DIRECT:        [1, "Running, No Prescaling"]
        PRESCALE_8:    [2, "Running, CLK/8"]
        PRESCALE_64:   [3, "Running, CLK/64"]
        PRESCALE_256:  [4, "Running, CLK/256"]
        PRESCALE_1024: [5, "Running, CLK/1024"]
        EXT_FALLING:   [6, "Running, ExtClk T1 Falling Edge"]
        EXT_RISING:    [7, "Running, ExtClk T1 Rising Edge"]
TC2:
  TCCR2:
    _delete:
      - CS20
      - CS21
      - CS22
    _add:
      CS:
        description: "Clock Select"
        bitRange: "[2:0]"
    CS:
      _replace_enum:
        NO_CLOCK:      [0, "No clock source (Timer/Counter stopped)"]
        DIRECT:        [1, "Running, No Prescaling"]
        PRESCALE_8:    [2, "Running, CLK/8"]
        PRESCALE_32:   [3, "Running, CLK/32"]
        PRESCALE_64:   [4, "Running, CLK/64"]
        PRESCALE_128:  [5, "Running, CLK/128"]
        PRESCALE_256:  [6, "Running, CLK/256"]
        PRESCALE_1024: [7, "Running, CLK/1024"]