Struct FrameCounter

pub struct FrameCounter {
    pub region: NesRegion,
    pub step_cycles: [u64; 6],
    pub step: usize,
    pub mode: u8,
    pub write_buffer: Option<u8>,
    pub write_delay: u8,
    pub block_counter: u8,
    pub cycle: u64,
    pub inhibit_irq: bool,
}

The APU Frame Counter generates a low-frequency clock for each APU channel.

See: https://www.nesdev.org/wiki/APU_Frame_Counter

Fields

region: NesRegion

step_cycles: [u64; 6]

step: usize

mode: u8

write_buffer: Option<u8>

write_delay: u8

block_counter: u8

cycle: u64

inhibit_irq: bool

Implementations

impl FrameCounter

pub const fn new(region: NesRegion) -> Self

pub const fn set_region(&mut self, region: NesRegion)

pub fn write(&mut self, val: u8, cycle: u64)

On write to $4017

pub const fn should_clock(&mut self, cycles: u64) -> bool

pub fn clock_with( &mut self, cycles: u64, on_clock: impl FnMut(FrameType), ) -> u64

Trait Implementations

impl Clone for FrameCounter

fn clone(&self) -> FrameCounter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FrameCounter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FrameCounter

fn default() -> FrameCounter

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FrameCounter

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Reset for FrameCounter

fn reset(&mut self, kind: ResetKind)

Reset the component given the ResetKind.

impl Serialize for FrameCounter

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.