Enum zeerust::ops::StatusFlag

pub enum StatusFlag {
    Carry,
    AddSubtract,
    ParityOverflow,
    HalfCarry,
    Zero,
    Sign,
}

Status Flags. Implemented in the Z80 as a bitfield on register F

Variants

Carry

Bit 0. Indicates carry or borrows from bit 7

AddSubtract

Bit 1. Usually 0 after addition, 1 after subtraction

ParityOverflow

Bit 2. Indicates overflow after arithmetic, or parity after bitwise operations Parity is set if the number of 1s in the number is even, otherwise it is reset

HalfCarry

Bit 4. Indicates carry or borrows from bit 3

Zero

Bit 6. Set if result of an operation was zero

Sign

Bit 7. Set if the 7th bit is 1 after an arithmatic operation, i.e. number is negative if considered as signed

Trait Implementations

impl PartialEq<StatusFlag> for StatusFlag

fn eq(&self, other: &StatusFlag) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Clone for StatusFlag

fn clone(&self) -> StatusFlag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StatusFlag

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

Formats the value using the given formatter.