Struct Cpu 

pub struct Cpu {
    pub reg: Registers,
    pub cycles: u64,
    pub halted: bool,
    pub illegal: bool,
    /* private fields */
}

Motorola 6809 CPU emulator.

Fields

reg: Registers

Programmer-visible registers.

cycles: u64

Total elapsed cycles since reset.

halted: bool

CPU is halted (hit illegal opcode or RESET instruction).

illegal: bool

CPU encountered an illegal opcode (invalid in current state).

Implementations

impl Cpu

pub fn new() -> Self

Create a new CPU with all state zeroed.

pub fn reset(&mut self, mem: &mut impl Memory)

Hardware reset: read PC from reset vector, set I+F, clear state.

pub fn set_irq(&mut self, active: bool)

Assert or de-assert the IRQ line (level-triggered).

pub fn set_firq(&mut self, active: bool)

Assert or de-assert the FIRQ line (level-triggered).

pub fn trigger_nmi(&mut self)

Trigger an NMI (edge-triggered). Only effective if NMI is armed.

pub fn step(&mut self, mem: &mut impl Memory) -> u64

Execute a single instruction (or handle a pending interrupt). Returns the number of cycles consumed.

pub fn run(&mut self, mem: &mut impl Memory, cycle_budget: u64) -> u64

Run until at least cycle_budget cycles have been consumed.

Trait Implementations

impl Debug for Cpu

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

Formats the value using the given formatter.

impl Default for Cpu

fn default() -> Self

Returns the “default value” for a type.