Chip name doesn't match

[Emanuel Amit]

For some reason every time i try to load a chip into the hardware simulator it tries to load the same xor chip and then the message is that the chip name doesn't match because i'm not trying to load an xor chip.

[cadet1620]

Does the chip that you are trying to load use Xor in it's PARTS section?

If so, the error message is being generated when the simulator tries to load the Xor.hdl for that chip.
Make sure that you are using the correct case for the Xor part in the chip you are loading.  It must be "Xor", not "xor" or XOR".

If this is not the problem, post the HDL you are trying to load and the exact error message you are getting. (Screen shot of the simulator is good for error message.)

This can happen on Windows because when you write, for instance, "xor(a=a,..." the simulator looks for a file named "xor.hdl" and Windows, ever so helpfully, finds "Xor.hdl" and opens it. The simulator starts parsing the file it thinks is "xor.hdl" and finds the line "CHIP Xor {" and the chip names do not match, so it throws the error.

--Mark

[Emanuel Amit]

thank you for answering Mark,
I am not using Xor in my HDL file but a simple and gate.
--Emanuel

[ybakos]

@Emanuel: Just to be sure, what are the contents of And.hdl?

Also, please post a complete screenshot of your And16.hdl, just to make sure there's nothing invalid at the top.

[Emanuel Amit]

Add16.hdl

[ybakos]

You posted Add16, but we're looking at And16.

[Emanuel Amit]

heres the right file but it happens with any chip i try to load And.hdl 

[cadet1620]

Emanuel Amit wrote

CHIP And {
    IN a, b;
    OUT out;

    PARTS:
...
    XOr(a=NotA, b=b, out=XOr1);
    XOr(a=a, b=NotB, out=XOr2);
...
}

Your And gate is using Xor, and this is exactly the problem that I first mentioned.
Your Xor gates are misspelled XOr. Notice the upper case "O" in you commands.
These need to be

    Xor(a=NotA, b=b, out=XOr1);
    Xor(a=a, b=NotB, out=XOr2);

Because your And chip is broken, All chips that you try to load that use And, or use any chips that use And, will also fail to load.

You need to build and test the chips in the order they are presented in the book.

• Build Not using only Nand
• Build And using only Nand and Not
• Build Or using only Nand, Not and And

See this post.

--Mark

[Emanuel Amit]

Thank you so much it works now.