Struct VsDbEntry 

pub struct VsDbEntry {
    pub vs_dip: u8,
    pub vs_ppu_type: VsPpuType,
    pub dual_system: bool,
}

A single Vs. System per-game database entry.

Fields

vs_dip: u8

The game’s factory-default DIP-switch bank, in this emulator’s encoding (switch 1 = bit 0 .. switch 8 = bit 7). MAME DSW0 default.

vs_ppu_type: VsPpuType

The correct Vs. System PPU type (output palette + 2C05 quirks). Supplies the right colour LUT for iNES-1.0 dumps that default to the 2C03.

dual_system: bool

true for a Vs. DualSystem cart (two CPUs + two PPUs sharing an inter-CPU latch — Tennis / Mahjong / Wrecking Crew / Balloon Fight). v2.0.0 beta.5: crate::Emu::from_rom routes these to the full two-console crate::VsDualSystem wrapper. This flag is the load-bearing detection source for the circulating iNES-1.0 dumps, whose headers carry no NES 2.0 byte-13 Vs. hardware type (see docs/audit/vs-dualsystem-design-2026-06-11.md).

Trait Implementations

impl Clone for VsDbEntry

fn clone(&self) -> VsDbEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VsDbEntry

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

Formats the value using the given formatter.

impl PartialEq for VsDbEntry

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

impl Eq for VsDbEntry

impl StructuralPartialEq for VsDbEntry