Struct Cop1Control 

pub struct Cop1Control { /* private fields */ }

COP1 control-register state.

Deliberately only the control registers: the 32 floating-point data registers arrive with the arithmetic in Sprint 3, and putting them here now would be state nothing reads.

Implementations

impl Cop1Control

pub const fn new() -> Self

Power-on state: all zero.

The manual does not define a reset value for FCSR; ADR 0004 requires reproducibility, so it is a documented zero. Software sets it up — which is exactly what n64-systemtest does on its fourth instruction.

pub const fn cfc1(&self, fs: u8) -> u32

CFC1 rt, fs — read a control register.

Only FCR0 and FCR31 exist. Every other fs reads zero, which is a choice rather than a documented fact — the manual does not say — and is recorded as such.

pub const fn ctc1(&mut self, fs: u8, value: u32)

CTC1 rt, fs — write a control register.

FCR0 is read-only, so a write to it is discarded rather than stored.

pub const fn fcsr(&self) -> u32

The raw FCSR value, for the arithmetic path in Sprint 3.

pub const fn flush_denorm_to_zero(&self) -> bool

FS — flush denormals to zero (bit 24).

Read by nothing yet. Exposed because n64-systemtest sets it during startup, so an implementation that silently dropped the bit would look fine until the first denormal.

pub const fn rounding_mode(&self) -> u8

RM — the rounding mode (bits 1..=0).

pub const fn enables(&self) -> u32

The Enable field (bits 11..=7).

Trait Implementations

impl Clone for Cop1Control

fn clone(&self) -> Cop1Control

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cop1Control

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

Formats the value using the given formatter.

impl Default for Cop1Control

fn default() -> Cop1Control

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Cop1Control

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Cop1Control

fn eq(&self, other: &Cop1Control) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Cop1Control

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Cop1Control

impl Eq for Cop1Control

impl StructuralPartialEq for Cop1Control