Struct EpsonRtc 

pub struct EpsonRtc { /* private fields */ }

The Epson RTC-4513 register file + handshake state.

Implementations

impl EpsonRtc

pub const fn new() -> Self

Build an RTC seeded to a fixed epoch (all-zero clock fields) rather than the host’s real wall-clock time (see the module doc’s determinism note).

pub fn read(&mut self, address: u32) -> u8

$4840-$4842 register read (ares EpsonRTC::read, address & 3).

pub const fn write(&mut self, address: u32, data: u8)

$4840-$4842 register write (ares EpsonRTC::write, address & 3, data & 15).

pub fn save_state(&self, w: &mut SaveWriter)

Write every clock field + the handshake state machine into a "RTC0" section. There is no firmware/chip-ROM byte here to exclude (this is a pure register-file clean-room port, per docs/adr/0003).

pub fn load_state( &mut self, r: &mut SaveReader<'_>, ) -> Result<(), SaveStateError>

The inverse of Self::save_state.

Errors

SaveStateError on truncated/corrupt input, a section with unconsumed trailing bytes, or SaveStateError::Invalid if the encoded state discriminant doesn’t match one of State’s four variants (a semantic enum constraint, not a hardware register width — the same posture Obc1Board::load_state already applies to its own cursor fields). Every clock/handshake field below is masked to the widest value rtc_write/write can ever produce (nibble fields & 0x0F, single-bit flags & 0x01, the few wider-but-still-narrow fields their own specific mask) so a hand-edited/corrupted save-state can’t inject a physically-unwritable bit pattern into a register real hardware could never hold.

Trait Implementations

impl Clone for EpsonRtc

fn clone(&self) -> EpsonRtc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EpsonRtc

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

Formats the value using the given formatter.

impl Default for EpsonRtc

fn default() -> Self

Returns the “default value” for a type.