1. Arbitrary Waveforms Module M10.5 Section 7.2

2. CLK DQ !Q CLK DQ !Q CLK DQ !Q Q0Q0.D Q1 Q2 Q1.D Q2.D s0 0 0 0 0 0 1 s1 0 0 1 0 1 0 s2 0 1 0 0 1 1 s3 0 1 1 1 0 0 s4 1 0 0 1 0 1 s5 1 0 1 1 1 0 s6 1 1 0 1 1 1 s7 1 1 1 0 0 0 State Q2 Q1 Q0 Q2.D Q1.D Q0.D Recall Divide-by-8 Counter Use Q2, Q1, Q0 as inputs to a combinational circuit to produce an arbitrary waveform.

3. s0 0 0 0 0 0 1 1 s1 0 0 1 0 1 0 1 s2 0 1 0 0 1 1 0 s3 0 1 1 1 0 0 0 s4 1 0 0 1 0 1 0 s5 1 0 1 1 1 0 1 s6 1 1 0 1 1 1 0 s7 1 1 1 0 0 0 1 State Q2 Q1 Q0 Q2.D Q1.D Q0.D y Example (See Exercise 7.10) Q2 Q1 Q0 00011110 0 1 11 11 y = !Q2 & !Q1 # Q2 & Q0 1 1 0 0 0 1 0 1

4. “ Inputs: PB PIN 10; “Clock “ Outputs: Q2..Q0 PIN 37,36,35 ISTYPE 'reg buffer'; " LED 6..8 Q = [Q2..Q0]; " 3-bit output vector Y PIN 44 ISTYPE ‘com’;“LED 1 EQUATIONS q0.d = !q0; q1.d = !q1 & q0 # q1 & !q0; q2.d = !q2 & q1 & q0 # q2 & !q1 # q2 & !q0; y = !q2 & !q1 # q2 & q0;

5. ORDER:clock,%2,q0,%2,q1,%2,q2,%2,y; VECTORS: C LLLH C HLLH C LHLL C HHLL C LLHL C HLHH C LHHL C HHHH C LLLH C HLLH C LHLL C HHLL C LLHL C HLHH C LHHL C HHHH CUPL Simulation File

6. CUPL Simulation Output File