Can somebody explain to me or point me in good direction for some help on instruction sets and addresses? I have problems where it tells you that your computer has instruction that is 12 bits and addresses that are 4 bits. Then asks questions like is it possible to have 12 two address instructions and so on. I've read my book and googled it, but nothing has really helped.

Is this where an instruction contains its addresses? For example, an instruction "0000 0001 0010" might mean "copy the value from register 1 into register 2", because "0000" means "copy", and "0001" and "0010" are "addresses" of a register. I don't really know the lingo.

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