Write an HDL module for the Gray code counter from Exercise 3.27.?

Data from problem 3.27

Gray codes have a useful property in that consecutive numbers differ in only a single bit position. Table 3.23 lists a 3-bit Gray code representing the numbers 0 to 7. Design a 3-bit modulo 8 Gray code counter FSM with no inputs and three outputs. (A modulo N counter counts from 0 to N ? 1, then

repeats. For example, a watch uses a modulo 60 counter for the minutes and seconds that counts from 0 to 59.) When reset, the output should be 000. On each clock edge, the output should advance to the next Gray code. After reaching 100, it should repeat with 000.

Transcribed Image Text:

Table 3.23 3-bit Gray code Number Gray code 0 0 1 1 1 1 4 5 1 6 1 7 1 0 0 2. 3.