Struct BgSplitState 

pub struct BgSplitState {
    pub nt_addr: u16,
    pub at_addr: u16,
    pub fine_y: u8,
    pub chr_bank: u8,
}

Vertical split-screen override (MMC5 $5200-$5202 and equivalents).

Lives in rustynes-mappers (the canonical owner) and is re-declared here as a small POD to avoid making rustynes-ppu depend on rustynes-mappers. The lockstep bus’s PpuBusAdapter translates between the two.

Fields

nt_addr: u16

Synthesized nametable byte address for the alt region ($2000-$3EFF).

at_addr: u16

Synthesized attribute byte address for the alt region.

fine_y: u8

Fine-Y (0..=7) for the alt region’s logical row.

chr_bank: u8

4 KiB CHR bank index for the alt region’s BG pattern fetches.

Trait Implementations

impl Clone for BgSplitState

fn clone(&self) -> BgSplitState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BgSplitState

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

Formats the value using the given formatter.

impl PartialEq for BgSplitState

fn eq(&self, other: &BgSplitState) -> 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 Copy for BgSplitState

impl Eq for BgSplitState

impl StructuralPartialEq for BgSplitState