[ALU] Parameters too many in Mux16.

[LucasYao93]

• Code: // no Not16(in = o1, out = o2); Mux16(a = o1, b = o2, sel = no, out = out, out = o3);
• Should be: // no Not16(in = o1, out = o2); Mux16(a = o1, b = o2, sel = no, out = o3);

[woai3c]

This is the right answer, you can run the ALU test and see the result.

[woai3c]

// no
    Not16(in = o1, out = o2);
    Mux16(a = o1, b = o2, sel = no, out = out, out = o3);

    // zr
    Or16Way(in = o3, out = zr1);
    Not(in = zr1, out = zr);

    // ng
    IsNeg(in = o3, out = ng);

[woai3c]

the or16way need the o3, and the out = out is ALU out.

[LucasYao93]

the or16way need the o3, and the out = out is ALU out.

You mean that Mux16 outputs two values o3 and out, they are the same. Right ?

[woai3c]

兄弟，我看你是中国人，用中文和你说。Mux16 就一个输出是 out，但是可以将多个逻辑门接在一个引脚上，例如 Or16Way 接在 Mux16 的 out 上，所以就能用 out=o3。另外它还要当成 ALU 的输出，就是 out=out。

[LucasYao93]

Mux16不是三个输入引脚，一个输出引脚吗， Mux16(a = o1, b = o2, sel = no, out = out, out = o3);这行命令看起来是两个输出引脚

[woai3c]

我估计这就跟一条河一样，在河的出口旁边挖条坑，水也能往旁边出，这就有了两个出口。ALU 这个引脚是指向内部的，对外的出口就只有一个 out。

[LucasYao93]

我估计这就跟一条河一样，在河的出口旁边挖条坑，水也能往旁边出，这就有了两个出口。ALU 这个引脚是指向内部的，对外的出口就只有一个 out。

ok, 了解了，感谢