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use regs::Register;
pub const CARRY_FLAG: u8 = 1<<0;
pub const ZERO_FLAG: u8 = 1<<1;
pub const NEGATIVE_FLAG: u8 = 1<<2;
pub const OVERFLOW_FLAG: u8 = 1<<3;
pub const S_FLAG: u8 = 1<<4;
pub const HALF_CARRY_FLAG: u8 = 1<<5;
pub const TRANSFER_FLAG: u8 = 1<<6;
pub const INTERRUPT_FLAG: u8 = 1<<7;
#[derive(Clone,Debug,PartialEq,Eq)]
pub struct SReg(pub Register);
impl SReg
{
pub fn new() -> Self {
SReg(Register {
name: "SREG".into(),
value: 0,
})
}
pub fn set(&mut self, flag: u8, state: bool) {
if state == true { self.0.value |= flag } else { self.0.value &= !flag };
}
pub fn get(&self, flag: u8) -> bool {
(self.0.value & flag) == flag
}
pub fn is_set(&self, flag: u8) -> bool { self.get(flag) }
pub fn is_clear(&self, flag: u8) -> bool { !self.get(flag) }
}