How to build 16 Byte RAM in Logisim

Discussion in 'Homework Help' started by jndjnd, Apr 6, 2015.

  1. jndjnd

    Thread Starter New Member

    Apr 6, 2015
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    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.
    Screen Shot 2015-04-06 at 8.41.14 PM.png
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,747
    4,796
    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!
     
  3. jndjnd

    Thread Starter New Member

    Apr 6, 2015
    2
    0
    Sorry, Here is what each subcircuit looks like

    NIBBLE:
    Screen Shot 2015-04-07 at 8.08.26 PM.png


    4 BIT:

    Screen Shot 2015-04-07 at 8.08.22 PM.png


    Register: Screen Shot 2015-04-07 at 8.08.16 PM.png
     
  4. absf

    Senior Member

    Dec 29, 2010
    1,492
    372
    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
     
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