nesapu

type APU struct {
	Memory    memory.Master
	Input     [2]InputDevice // we put inputs here since the APU's buffer is used to talk to them
	Interrupt func()

	Trace io.Writer
	// contains filtered or unexported fields
}

type DMC struct {
	// contains filtered or unexported fields
}

type Filter interface {
	Step(x float32) float32
}

type FilterChain []Filter

type FirstOrderFilter struct {
	B0 float32
	B1 float32
	A1 float32
	// contains filtered or unexported fields
}

type InputDevice interface {
	Read() byte // CLK trigger + read
	Write(byte) // OUT0, OUT1 and OUT2 update
}

type Noise struct {
	// contains filtered or unexported fields
}

type Pulse struct {
	// contains filtered or unexported fields
}

type Triangle struct {
	// contains filtered or unexported fields
}