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[/] [versatile_counter/] [trunk/] [rtl/] [verilog/] [versatile_counter.v] - Blame information for rev 12

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`include "versatile_counter_defines.v"
`define LFSR_LENGTH `CNT_LENGTH
`include "lfsr_polynom.v"
`let CNT_INDEX=CNT_LENGTH-1
module `CNT_MODULE_NAME
  (
`ifdef CNT_TYPE_GRAY
    output reg [`CNT_LENGTH:1] q,
 `ifdef CNT_Q_BIN
    output [`CNT_LENGTH:1]    q_bin,
 `endif
`else
 `ifdef CNT_Q
    output [`CNT_LENGTH:1]    q,
 `endif
`endif
`ifdef CNT_CLEAR
    input clear,
`endif
`ifdef CNT_SET
    input set,
`endif
`ifdef CNT_REW
    input rew,
`endif
`ifdef CNT_CE
    input cke,
`endif
`ifdef CNT_QNEXT
    output [`CNT_LENGTH:1] q_next,
`endif
`ifdef CNT_Z
    output z,
`endif
`ifdef CNT_ZQ
    output reg zq,
`endif
    input clk,
    input rst
   );
 
`ifdef CNT_SET
   parameter set_value = `CNT_SET_VALUE;
`endif
`ifdef CNT_WRAP
   parameter wrap_value = `CNT_WRAP_VALUE;
`endif
 
   // internal q reg
   reg [`CNT_LENGTH:1] qi;
 
`ifndef CNT_QNEXT
   wire [`CNT_LENGTH:1] q_next;
`endif
`ifdef CNT_REW
   wire [`CNT_LENGTH:1] q_next_fw;
   wire [`CNT_LENGTH:1] q_next_rew;
`endif
 
`ifndef CNT_REW
   assign q_next =
`else
     assign q_next_fw =
`endif
`ifdef CNT_CLEAR
       clear ? `CNT_LENGTH'd0 :
`endif
`ifdef CNT_SET
         set ? set_value :
`endif
`ifdef CNT_WRAP
           (qi == wrap_value) ? `CNT_LENGTH'd0 :
`endif
`ifdef CNT_TYPE_LFSR
             {qi[`CNT_INDEX:1],~(`LFSR_FB)};
`else
   qi + `CNT_LENGTH'd1;
`endif
 
`ifdef CNT_REW
   assign q_next_rew =
 `ifdef CNT_CLEAR
     clear ? `CNT_LENGTH'd0 :
 `endif
 `ifdef CNT_SET
       set ? set_value :
 `endif
 `ifdef CNT_WRAP
         (qi == `CNT_LENGTH'd0) ? wrap_value :
 `endif
 `ifdef CNT_TYPE_LFSR
           {~(`LFSR_FB_REW),qi[`CNT_LENGTH:2]};
 `else
   qi - `CNT_LENGTH'd1;
 `endif
`endif
 
`ifdef CNT_REW
   assign q_next = rew ? q_next_rew : q_next_fw;
`endif
 
   always @ (posedge clk or posedge rst)
     if (rst)
       qi <= `CNT_LENGTH'd0;
     else
`ifdef CNT_CE
   if (cke)
`endif
     qi <= q_next;xs
 
`ifdef CNT_Q
 `ifdef CNT_TYPE_GRAY
   always @ (posedge clk or posedge rst)
     if (rst)
       q <= `CNT_RESET_VALUE;
     else
  `ifdef CNT_CE
       if (cke)
  `endif
         q <= (q_next>>1) ^ q_next;
  `ifdef CNT_Q_BIN
   assign q_bin = qi;
  `endif
 `else
   assign q = q_next;
 `endif
`endif
 
`ifdef CNT_Z
   assign z = (q == `CNT_LENGTH'd0);
`endif
 
`ifdef CNT_ZQ
   always @ (posedge clk or posedge rst)
     if (rst)
       zq <= 1'b1;
     else
 `ifdef CNT_CE
       if (cke)
 `endif
         zq <= q_next == `CNT_LENGTH'd0;
`endif
endmodule

Line No.	Rev	Author	Line
1	10	unneback	`include "versatile_counter_defines.v"
2			`define LFSR_LENGTH `CNT_LENGTH
3			`include "lfsr_polynom.v"
4			`let CNT_INDEX=CNT_LENGTH-1
5			module `CNT_MODULE_NAME
6			`(`
7			`ifdef CNT_TYPE_GRAY
8			output reg [`CNT_LENGTH:1] q,
9			`ifdef CNT_Q_BIN
10			output [`CNT_LENGTH:1] q_bin,
11			`endif
12			`else
13			`ifdef CNT_Q
14			output [`CNT_LENGTH:1] q,
15			`endif
16			`endif
17			`ifdef CNT_CLEAR
18			`input clear,`
19			`endif
20			`ifdef CNT_SET
21			`input set,`
22			`endif
23			`ifdef CNT_REW
24			`input rew,`
25			`endif
26			`ifdef CNT_CE
27			`input cke,`
28			`endif
29			`ifdef CNT_QNEXT
30			output [`CNT_LENGTH:1] q_next,
31			`endif
32			`ifdef CNT_Z
33			`output z,`
34			`endif
35			`ifdef CNT_ZQ
36			`output reg zq,`
37			`endif
38			`input clk,`
39			`input rst`
40			`);`
41
42			`ifdef CNT_SET
43			parameter set_value = `CNT_SET_VALUE;
44			`endif
45			`ifdef CNT_WRAP
46			parameter wrap_value = `CNT_WRAP_VALUE;
47			`endif
48
49			`// internal q reg`
50			reg [`CNT_LENGTH:1] qi;
51
52			`ifndef CNT_QNEXT
53			wire [`CNT_LENGTH:1] q_next;
54			`endif
55			`ifdef CNT_REW
56			wire [`CNT_LENGTH:1] q_next_fw;
57			wire [`CNT_LENGTH:1] q_next_rew;
58			`endif
59
60			`ifndef CNT_REW
61			`assign q_next =`
62			`else
63			`assign q_next_fw =`
64			`endif
65			`ifdef CNT_CLEAR
66			clear ? `CNT_LENGTH'd0 :
67			`endif
68			`ifdef CNT_SET
69			`set ? set_value :`
70			`endif
71			`ifdef CNT_WRAP
72			(qi == wrap_value) ? `CNT_LENGTH'd0 :
73			`endif
74			`ifdef CNT_TYPE_LFSR
75			{qi[`CNT_INDEX:1],~(`LFSR_FB)};
76			`else
77			qi + `CNT_LENGTH'd1;
78			`endif
79
80			`ifdef CNT_REW
81			`assign q_next_rew =`
82			`ifdef CNT_CLEAR
83			clear ? `CNT_LENGTH'd0 :
84			`endif
85			`ifdef CNT_SET
86			`set ? set_value :`
87			`endif
88			`ifdef CNT_WRAP
89			(qi == `CNT_LENGTH'd0) ? wrap_value :
90			`endif
91			`ifdef CNT_TYPE_LFSR
92			{~(`LFSR_FB_REW),qi[`CNT_LENGTH:2]};
93			`else
94			qi - `CNT_LENGTH'd1;
95			`endif
96			`endif
97
98			`ifdef CNT_REW
99			`assign q_next = rew ? q_next_rew : q_next_fw;`
100			`endif
101
102			`always @ (posedge clk or posedge rst)`
103			`if (rst)`
104			qi <= `CNT_LENGTH'd0;
105			`else`
106			`ifdef CNT_CE
107			`if (cke)`
108			`endif
109	12	unneback	`qi <= q_next;xs`
110	10	unneback
111			`ifdef CNT_Q
112			`ifdef CNT_TYPE_GRAY
113			`always @ (posedge clk or posedge rst)`
114			`if (rst)`
115	12	unneback	q <= `CNT_RESET_VALUE;
116	10	unneback	`else`
117			`ifdef CNT_CE
118			`if (cke)`
119			`endif
120			`q <= (q_next>>1) ^ q_next;`
121			`ifdef CNT_Q_BIN
122			`assign q_bin = qi;`
123			`endif
124			`else
125			`assign q = q_next;`
126			`endif
127			`endif
128
129			`ifdef CNT_Z
130			assign z = (q == `CNT_LENGTH'd0);
131			`endif
132
133			`ifdef CNT_ZQ
134			`always @ (posedge clk or posedge rst)`
135			`if (rst)`
136			`zq <= 1'b1;`
137			`else`
138			`ifdef CNT_CE
139			`if (cke)`
140			`endif
141			zq <= q_next == `CNT_LENGTH'd0;
142			`endif
143			`endmodule`

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[/] [versatile_counter/] [trunk/] [rtl/] [verilog/] [versatile_counter.v] - Blame information for rev 12