fn jp_z_nn(cpu: &mut Cpu) {
    let addr = next_word(cpu);

    if cpu.zero() {
        cpu.load_pc(addr);
    }
}
/// Jump to absolute address if `Z`
Jump to absolute address if `Z`
Jump to absolute address if ` Z `
fn jp_z_nn(cpu: &mut Cpu) {
    let addr = next_word(cpu);
    if cpu.zero() {
        cpu.load_pc(addr);
    }
}
fn jp_z_nn ( cpu : & mut Cpu ) { let addr = next_word ( cpu ) ; if cpu . zero ( ) { cpu . load_pc ( addr ) ; } }
Jump to absolute address if `Z`
Jump to absolute address if ` Z `
cpu
&mut Cpu
cpu
&mut Cpu