2 20 Given the following AHDL code, (a) Explain the function of this code. Refer to parts of the code and (12) be specific in your answer. (b) Explain the roles of c[1..0) and tc. (8) 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 19 SUBDESIGN test2 ( clock, c[1..0] :INPUT; 9[3..0], to :OUTPUT; > VARIABLE count [3..0] :DFF; BEGIN DEFAULTS tc = VCC; END DEFAULTS; count().clk = clock; CASE C[] IS WHEN H"0" => count().d = 0; WHEN H"1" => IF count() == 0 THEN count[l.d = 9; tc = GND; ELSE count[..d = count[]. 1; END IF; WHEN H"2" => IF count[] == 9 THEN count[].d = 0; tc = GND; ELSE count[].d = count[].q + 1; END IF; WHEN H"3" => count[l.d = count().g; END CASE; 91] = count(l.; END; No lo o 22 23 24 25 26 27 28 2 20 Given the following AHDL code, (a) Explain the function of this code. Refer to parts of the code and (12) be specific in your answer. (b) Explain the roles of c[1..0) and tc. (8) 1 2 3 4 5 6 7 8 11 12 13 14 15 16 17 18 19 SUBDESIGN test2 ( clock, c[1..0] :INPUT; 9[3..0], to :OUTPUT; > VARIABLE count [3..0] :DFF; BEGIN DEFAULTS tc = VCC; END DEFAULTS; count().clk = clock; CASE C[] IS WHEN H"0" => count().d = 0; WHEN H"1" => IF count() == 0 THEN count[l.d = 9; tc = GND; ELSE count[..d = count[]. 1; END IF; WHEN H"2" => IF count[] == 9 THEN count[].d = 0; tc = GND; ELSE count[].d = count[].q + 1; END IF; WHEN H"3" => count[l.d = count().g; END CASE; 91] = count(l.; END; No lo o 22 23 24 25 26 27 28