fn res_a(cpu: &mut Cpu, bit: u8) {
        let a = cpu.a();

        cpu.set_a(res(a, bit));
    }
/// Helper function to clear bits in `A`
Helper function to clear bits in `A`
Helper function to clear bits in ` A `
fn res_a(cpu: &mut Cpu, bit: u8) {
        let a = cpu.a();
        cpu.set_a(res(a, bit));
    }
fn res_a ( cpu : & mut Cpu , bit : u8 ) { let a = cpu . a ( ) ; cpu . set_a ( res ( a , bit ) ) ; }
Helper function to clear bits in `A`
Helper function to clear bits in ` A `
cpu
&mut Cpu
bit
u8
cpu
&mut Cpu
bit
u8