Struct acs::arch::fast::cpu::Cpu

pub struct Cpu {
    pub in_m: Signal16,
    pub instruction: Signal16,
    pub reset: Signal,
    pub out_m: Signal16,
    pub write_m: Signal,
    pub address_m: Signal15,
    pub pc: Signal16,
    pub a_register: Register16,
    pub d_register: Register16,
    /* private fields */
}

Fast Central Processing Unit able to execute a given instruction and to determine which instruction should be fetched and executed next

Fields

in_m: Signal16

instruction: Signal16

reset: Signal

out_m: Signal16

write_m: Signal

address_m: Signal15

pc: Signal16

a_register: Register16

d_register: Register16

Implementations

impl Cpu

pub fn sim(
    &mut self,
    in_m: Signal16,
    instruction: Signal16,
    reset: Signal
) -> (Signal, Signal16, Signal15, Signal16)

Carries out the simulation, taking as input:

• in_m: data from memory
• instruction: fetched from ROM
• reset: whether to set the program counter to zero

It returns the following:

• write_m: whether to write to memory
• out_m: data going to memory
• address_m: memory address
• pc: program counter

pub fn get_pc(&self) -> Signal16

pub fn get_address_m(&self) -> Signal15

pub fn get_out_m(&self) -> Signal16

pub fn get_write_m(&self) -> Signal

Trait Implementations

impl Default for Cpu

fn default() -> Cpu

Returns the “default value” for a type.

impl Unit for Cpu

fn tock(&mut self)

Carries out the tock-phase of a clock cycle: HIGH

fn tick(&mut self)

Carries out the tick-phase of a clock cycle: LOW

fn eval(&mut self)

Evaluates the logic expression as we do with arithmetic without advancing the time.