Homework #8

• Complete your work on green engineering paper
• Staple in upper left if more than one sheet.
• Format the top of the first sheet as follows.

  CSCE 436

  [Your name]

  HW#9

  [Due Date]

  [Page ref]

  The page reference for the first page of a four page document would be 1/4, the second page of this document would be labeled 2/4 and so on.
• Do not write on the back side of the green engineering paper
• Digital copies of all code, testbenches, and waveforms will also be submitted via BitBucket.

1. Design the control unit for the keyboard scancode converter started in lecture 11. Integrate it into the code and run a testbench showing two buttons pressed - not the same ones that the existing testbench presses. Turn in:
   • Hand-drawn diagram showing how all the files given in Lecture 12 are connected together. Using the testbench (lec12_tb) as the top level entity and interconnecting the keyboard, lec12 (Lec 12 entity), lec12_cu (control unit), and lec12_dp (datapath).
   • Hand-drawn state diagram for the control unit.
   • The complete control word table for your design.
   • Hardcopy and digital copy of the VHDL describing your control unit
   • Hardcopy and digital Image of your testbench output in Isim showing the following signals - remove all other signals.
     • clk
     • reset
     • keyboard clock
     • keyboard data
     • control unit state
     • Status word
     • Control word
     • busy signal
     • shift register
     • scan code
     • keyCntr