fn op_Fx55(&mut self, x: usize) {
        for offset in 0..=x {
            self.memory[self.I + offset] = self.V[offset];
        }

        self.pc.goto_next();
    }
// Store registers V0 through Vx in memory starting at address I.
Store registers V0 through Vx in memory starting at address I.
Store registers V0 through Vx in memory starting at address I .
fn op_Fx55(&mut self, x: usize) {
        for offset in 0..=x {
            self.memory[self.I + offset] = self.V[offset];
        }
        self.pc.goto_next();
    }
fn op_Fx55 ( & mut self , x : usize ) { for offset in 0 ..= x { self . memory [ self . I + offset ] = self . V [ offset ] ; } self . pc . goto_next ( ) ; }
Store registers V0 through Vx in memory starting at address I.
Store registers V0 through Vx in memory starting at address I .
&mut self
x
usize
&mut self
x
usize