Struct CartridgeMemory 

pub struct CartridgeMemory {
    pub prg_ram: Vec<u8>,
    pub prg_rom: Vec<u8>,
    pub chr_ram: Vec<u8>,
    pub chr_rom: Vec<u8>,
    pub nametable_arrangement: NametableArrangement,
}

Contains all memory in the cartridge that isn’t mapper-specific.

Contains PRG/CHR ROM/RAM. Does not contain any latches, banks, or dividers used by mappers.

Fields

prg_ram: Vec<u8>

Program RAM (PRG RAM) of the cartridge

prg_rom: Vec<u8>

Program ROM (PRG ROM) of the cartridge

chr_ram: Vec<u8>

Character RAM (CHR RAM) of the cartridge

chr_rom: Vec<u8>

Character ROM (CHR ROM) of the cartridge

nametable_arrangement: NametableArrangement

Nametable arrangement of the cartridge, read when parsing the file. May be changed by the mapper, use Mapper::nametable_arrangement to get the current nametable arrangement being used

Implementations

impl CartridgeMemory

pub fn read_chr(&self, addr: usize) -> u8

Read a byte from CHR ROM or (if CHR ROM is empty) CHR RAM.

This is really a convience function, since most cartridges either are all CHR ROM or CHR RAM. So this could be interpreted as just “Read CHR from whatever format the cartridge using”

pub fn write_chr(&mut self, addr: usize, value: u8)

Write a byte to CHR RAM, if present.

pub fn read_prg_ram(&self, addr: usize) -> u8

Read a byte from PRG RAM

Read from the PRG RAM on the cartridge, wrapping around the end if addr is too large

pub fn write_prg_ram(&mut self, addr: usize, value: u8)

Write a byte to PRG RAM

Write to PRG RAM, wrapping around the end if addr is too large

pub fn read_prg_rom(&self, addr: usize) -> u8

Read a byte from PRG ROM

Read from PRG ROM, wrapping around the end if addr is too large

Trait Implementations

impl Clone for CartridgeMemory

fn clone(&self) -> CartridgeMemory

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'de> Deserialize<'de> for CartridgeMemory

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CartridgeMemory

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

where __S: Serializer,

Serialize this value into the given Serde serializer.