Enum Region 

pub enum Region {
    Ntsc,
    Pal,
}

The emulated console region, selecting the AI video clock.

Variants

Ntsc

NTSC (~60 Hz), the common region.

Pal

PAL (~50 Hz).

Implementations

impl Region

pub const fn video_clock(self) -> u32

The video clock (Hz) this region feeds into the AI DAC divider.

pub const fn from_destination_code(code: u8) -> Self

The region a cartridge’s destination code (ROM header byte 0x3E, the last character of the 4-byte game code) implies.

The destination characters are the N64brew Wiki ROM Header §Standard header table (read from n64brew_wiki/html/ROM Header.xhtml — the markdown mirror renders that table as a bare [TABLE] placeholder):

A All · B Brazil · C China · D Germany · E North America · F France · G Gateway 64 (NTSC) · H Netherlands · I Italy · J Japan · K Korea · L Gateway 64 (PAL) · N Canada · P Europe · S Spain · U Australia · W Scandinavia · X/Y/Z Europe

Provenance, and its limit. That table gives destinations, not TV standards — only G/L are labeled NTSC/PAL by the wiki itself. The 50/60 Hz classification of the remaining countries is the broadcast standard for each territory, not a hardware-documented N64 fact, and there is no oracle for it (no test ROM checks region detection). It is therefore modeled and ledgered as documented-but-ungated rather than presented as measured — see docs/accuracy-ledger.md (T-71-005).

Three cases are decided explicitly rather than guessed:

• B Brazil → NTSC. Brazil broadcast PAL-M, which is a 60 Hz standard; for the AI divisor it behaves as NTSC, not as 50 Hz PAL.
• C China → NTSC. A PAL territory, but with no known retail N64; the default is kept rather than inventing a 50 Hz cartridge that never shipped.
• A “All” → NTSC. Names no single region, so it takes the default.

Any unrecognized byte also returns Region::Ntsc, so an unknown or homebrew code is behavior-preserving rather than silently retuning audio.

Trait Implementations

impl Clone for Region

fn clone(&self) -> Region

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Region

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

Formats the value using the given formatter.

impl Default for Region

fn default() -> Region

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Region

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Region

fn eq(&self, other: &Region) -> 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 Region

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 Region

impl Eq for Region

impl StructuralPartialEq for Region