I have to construct a 16 byte RAM in logisim with an address register, data register, and mode. I've made a 4 bit RAM so far but I'm not sure how to convert it to a 16 byte RAM. Here's what I have so far.

 

Boxes called "4-bit" and such don't tell us much. How are we supposed to have ANY idea what each port on such a part is. The same with a box called NIBBLE or Register.

We are NOT mindreaders!

 

Boxes called "4-bit" and such don't tell us much. How are we supposed to have ANY idea what each port on such a part is. The same with a box called NIBBLE or Register.

We are NOT mindreaders!

Sorry, Here is what each subcircuit looks like

NIBBLE:



4 BIT:



Register:

 

First you have to extend the 2 bit address lines to 4 bit address. Refer to the logic diagram as in the attached pdf.

Allen