Struct libnoentiendo::memory::BranchMemory

pub struct BranchMemory { /* private fields */ }

Maps several Memory objects into a single contiguous address space. Each mapped object is assigned a starting address, and reads and writes will have the starting address subtracted from them before being passed to the underlying Memory object.

Implementations

impl BranchMemory

pub fn new() -> Self

Create a new BranchMemory with no mappings.

pub fn map(self, address: usize, memory: impl Memory + 'static) -> Self

Map a new Memory object to the given starting address in this mapping. Returns this BranchMemory for chaining.

Trait Implementations

impl Default for BranchMemory

fn default() -> BranchMemory

Returns the “default value” for a type.

impl Memory for BranchMemory

fn read(&mut self, address: u16) -> u8

Read a byte from this memory at the given address. Implementations may trigger side effects as a result of this read.

fn write(&mut self, address: u16, value: u8)

Write a byte to this memory at the given address.

fn reset(&mut self)

Reset this memory to its initial state, e.g. after a system reboot. Sometimes this will clear the contents of the memory, like with RAM. Other times this is a no-op, e.g. for ROM.

fn poll( &mut self, cycles_since_poll: u64, total_cycle_count: u64 ) -> ActiveInterrupt

Poll this memory to see if an interrupt has been triggered. Implementations may trigger an NMI or IRQ for any implementation-dependent reason.