Enum pir_8_emu::isa::instruction::InstructionJumpCondition

pub enum InstructionJumpCondition {
    Jmpz,
    Jmpp,
    Jmpg,
    Jmpc,
    Jmzg,
    Jmzl,
    Jmpl,
    Jump,
}

This Instruction takes a three bit operand indicating under what condition the jump should be performed.

If the condition is met, the value of ADR is loaded into the PC.

If the condition is not met, no further special action is taken; the PC would have already been incremented as part of loading the instruction.

NB: The value of ADR must have been set with the desired target location prior to the JUMP instruction being performed.

This table shows what combination of bits to the JUMP instruction check what flags and in what combination

FFF	Name	Description
000	JMPZ	Zero flag
001	JMPP	Parity flag
010	JMPG	NOT Zero AND Greater than flag (i.e. greater than)
011	JMPC	Carry flag
100	JMZG	Zero OR Greater than flags
101	JMZL	Zero OR NOT Greater than flag
110	JMPL	NOT Zero AND NOT Greater than flag (i.e. less than)
111	JUMP	Unconditional Jump (always jumps)

Variants

Jmpz

Jmpp

Jmpg

Jmpc

Jmzg

Jmzl

Jmpl

Jump

Methods

impl InstructionJumpCondition

pub fn is_satisfied(self, flags: u8) -> bool

Check, whether the specified flagset satisfies this jump condition

Examples

assert!(InstructionJumpCondition::Jmpg.is_satisfied(0b10100));

assert!(!InstructionJumpCondition::Jmpl.is_satisfied(0b00101));

Trait Implementations

impl Clone for InstructionJumpCondition

fn clone(&self) -> InstructionJumpCondition

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for InstructionJumpCondition

impl Debug for InstructionJumpCondition

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

Formats the value using the given formatter.

impl Display for InstructionJumpCondition

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

Formats the value using the given formatter.

impl Eq for InstructionJumpCondition

impl Hash for InstructionJumpCondition

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Ord for InstructionJumpCondition

fn cmp(&self, other: &InstructionJumpCondition) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<InstructionJumpCondition> for InstructionJumpCondition

fn eq(&self, other: &InstructionJumpCondition) -> 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 PartialOrd<InstructionJumpCondition> for InstructionJumpCondition

fn partial_cmp(&self, other: &InstructionJumpCondition) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for InstructionJumpCondition

impl StructuralPartialEq for InstructionJumpCondition

impl TryFrom<u8> for InstructionJumpCondition

type Error = ()

The type returned in the event of a conversion error.

fn try_from(raw: u8) -> Result<InstructionJumpCondition, ()>

Performs the conversion.