Struct M68kCpu 

pub struct M68kCpu {
    pub core: CpuCore,
}

Systemless wrapper around m68k::CpuCore.

Construction selects the CPU type from crate::machine_profile::REFERENCE_MACHINE_PROFILE. Callers with a specialized embedding may subsequently reconfigure the public core.

Fields

core: CpuCore

Complete m68k CPU state and execution API.

This is public for diagnostics and specialized embedding beyond the register-only CpuOps interface.

Implementations

impl M68kCpu

pub fn new() -> Self

Create a CPU configured for the canonical Systemless machine profile.

pub fn read_reg(&self, reg: Register) -> u32

Read one data, address, or program-counter register.

pub fn write_reg(&mut self, reg: Register, value: u32)

Write one data, address, or program-counter register.

pub fn is_stopped(&self) -> bool

Return whether the CPU is stopped by a STOP instruction.

pub fn reset(&mut self, bus: &mut MacMemoryBus)

Reset the CPU from the initial stack-pointer and program-counter vectors.

pub fn run_batch( &mut self, bus: &mut MacMemoryBus, max_instructions: u32, watch_pcs: &[u32], ) -> BatchResult

Execute at most max_instructions through m68k’s throughput path.

Native builds enable Cranelift compilation for eligible hot traces; WebAssembly executes the same traces through the portable executor. Execution returns on the first event the runner must handle: a trap, stopped CPU, watched PC, or exhausted instruction budget.

See m68k::CpuCore::run_batch for the exit/accounting contract; the trapping instruction is not included in instructions and core.ppc holds its address.

pub fn step(&mut self, bus: &mut MacMemoryBus) -> StepResult

Execute one instruction through m68k’s precise stepping path.

Systemless surfaces completed instructions, A-line traps, and STOP directly. F-line exits retain the legacy no-op behavior and return StepResult::Ok; illegal instructions, TRAP, and BKPT exits are reported and converted to StepResult::Stopped.

Trait Implementations

impl CpuOps for M68kCpu

fn read_reg(&self, reg: Register) -> u32

Read the current value of a single register.

fn write_reg(&mut self, reg: Register, value: u32)

Write a value into a single register.

fn get_ccr(&self) -> u8

Read the condition code register (CCR) byte.

fn set_ccr(&mut self, ccr: u8)

Set the condition code register (CCR).

impl Default for M68kCpu

fn default() -> Self

Returns the “default value” for a type.