指令分析的一般性总结（三）

 1 case (jp)
 2 
 3 0:    begin
 4 
 5         jp <= 1;
 6 
 7     end
 8 
 9 1:    begin
10 
11         if  (q_w[15:11]==5‘b00010) 
12 
13         begin
14 
15             Add<=1;
16 
17             jp<=2;
18 
19         end
20 
21     end
22 
23 2:    begin
24 
25             if  (Add==1) 
26 
27             begin
28 
29                 mar<=q_w[10:0];
30 
31                 jp <= 3;
32 
33             end
34 
35     end
36 
37 3:    if  (Add==1)  jp <= 4;
38 
39 4:    begin
40 
41         if  (Add==1) 
42 
43         begin
44 
45             b<=q_data;
46 
47             a<=da;
48 
49             jp <= 5;    
50 
51         end
52 
53     end
54 
55 5:    begin
56 
57         if  (Add==1) 
58 
59         begin
60 
61             da<=a+b;
62 
63             pc <= pc+1;
64 
65             Add <=0;
66 
67             jp <= 0;
68 
69         end
70 
71     end
72 
73 endcase