Re: Introduction to Hack Assembly Language

Posted by Aika on
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Introduction-to-Hack-Assembly-Language-tp4032232p4034830.html

I realized I didn't understand how the decoder works and I've reconsidered.
How about my guess here?

The decoder has a MUX inside and it is controlled by the msb,
and its behavior changes depends on a command it gets (A or C).

For example,,,
When the msb is a 0, the control bit of A-register is negation of the msb.
When the msb is a 1, it is the d1.