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[/] [wdsp/] [trunk/] [rtl/] [verilog/] [minsoc/] [wb_conmax/] [tags/] [start/] [rtl/] [verilog/] [wb_conmax_pri_enc.v] - Blame information for rev 7

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/////////////////////////////////////////////////////////////////////
////                                                             ////
////  WISHBONE Connection Matrix Priority Encoder                ////
////                                                             ////
////                                                             ////
////  Author: Rudolf Usselmann                                   ////
////          rudi@asics.ws                                      ////
////                                                             ////
////                                                             ////
////  Downloaded from: http://www.opencores.org/cores/wb_conmax/ ////
////                                                             ////
/////////////////////////////////////////////////////////////////////
////                                                             ////
//// Copyright (C) 2001 Rudolf Usselmann                         ////
////                    rudi@asics.ws                            ////
////                                                             ////
//// This source file may be used and distributed without        ////
//// restriction provided that this copyright statement is not   ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer.////
////                                                             ////
////     THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     ////
//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   ////
//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   ////
//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      ////
//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         ////
//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    ////
//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   ////
//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        ////
//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  ////
//// LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  ////
//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  ////
//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         ////
//// POSSIBILITY OF SUCH DAMAGE.                                 ////
////                                                             ////
/////////////////////////////////////////////////////////////////////
 
//  CVS Log
//
//  $Id: wb_conmax_pri_enc.v,v 1.1.1.1 2001-10-19 11:01:41 rudi Exp $
//
//  $Date: 2001-10-19 11:01:41 $
//  $Revision: 1.1.1.1 $
//  $Author: rudi $
//  $Locker:  $
//  $State: Exp $
//
// Change History:
//               $Log: not supported by cvs2svn $
//
//
//
//
 
`include "wb_conmax_defines.v"
 
module wb_conmax_pri_enc(
                valid,
                pri0, pri1, pri2, pri3,
                pri4, pri5, pri6, pri7,
                pri_out
                );
 
////////////////////////////////////////////////////////////////////
//
// Module Parameters
//
 
parameter       [1:0]    pri_sel = 2'd0;
 
////////////////////////////////////////////////////////////////////
//
// Module IOs
//
 
input   [7:0]    valid;
input   [1:0]    pri0, pri1, pri2, pri3;
input   [1:0]    pri4, pri5, pri6, pri7;
output  [1:0]    pri_out;
 
////////////////////////////////////////////////////////////////////
//
// Local Wires
//
 
wire    [3:0]    pri0_out, pri1_out, pri2_out, pri3_out;
wire    [3:0]    pri4_out, pri5_out, pri6_out, pri7_out;
wire    [3:0]    pri_out_tmp;
reg     [1:0]    pri_out0, pri_out1;
wire    [1:0]    pri_out;
 
////////////////////////////////////////////////////////////////////
//
// Priority Decoders
//
 
wb_conmax_pri_dec #(pri_sel) pd0(
                .valid(         valid[0] ),
                .pri_in(        pri0            ),
                .pri_out(       pri0_out        )
                );
 
 
wb_conmax_pri_dec #(pri_sel) pd1(
                .valid(         valid[1]        ),
                .pri_in(        pri1            ),
                .pri_out(       pri1_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd2(
                .valid(         valid[2]        ),
                .pri_in(        pri2            ),
                .pri_out(       pri2_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd3(
                .valid(         valid[3]        ),
                .pri_in(        pri3            ),
                .pri_out(       pri3_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd4(
                .valid(         valid[4]        ),
                .pri_in(        pri4            ),
                .pri_out(       pri4_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd5(
                .valid(         valid[5]        ),
                .pri_in(        pri5            ),
                .pri_out(       pri5_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd6(
                .valid(         valid[6]        ),
                .pri_in(        pri6            ),
                .pri_out(       pri6_out        )
                );
 
wb_conmax_pri_dec #(pri_sel) pd7(
                .valid(         valid[7]        ),
                .pri_in(        pri7            ),
                .pri_out(       pri7_out        )
                );
 
////////////////////////////////////////////////////////////////////
//
// Priority Encoding
//
 
assign pri_out_tmp =    pri0_out | pri1_out | pri2_out | pri3_out |
                        pri4_out | pri5_out | pri6_out | pri7_out;
 
// 4 Priority Levels
always @(pri_out_tmp)
        if(pri_out_tmp[3])      pri_out1 = 2'h3;
        else
        if(pri_out_tmp[2])      pri_out1 = 2'h2;
        else
        if(pri_out_tmp[1])      pri_out1 = 2'h1;
        else                    pri_out1 = 2'h0;
 
// 2 Priority Levels
always @(pri_out_tmp)
        if(pri_out_tmp[1])      pri_out0 = 2'h1;
        else                    pri_out0 = 2'h0;
 
////////////////////////////////////////////////////////////////////
//
// Final Priority Output
//
 
// Select configured priority
 
assign pri_out = (pri_sel==2'd0) ? 2'h0 : ( (pri_sel==2'd1) ? pri_out0 : pri_out1 );
 
endmodule
 
 

Line No.	Rev	Author	Line
1	7	parrado	`/////////////////////////////////////////////////////////////////////`
2			`//// ////`
3			`//// WISHBONE Connection Matrix Priority Encoder ////`
4			`//// ////`
5			`//// ////`
6			`//// Author: Rudolf Usselmann ////`
7			`//// rudi@asics.ws ////`
8			`//// ////`
9			`//// ////`
10			`//// Downloaded from: http://www.opencores.org/cores/wb_conmax/ ////`
11			`//// ////`
12			`/////////////////////////////////////////////////////////////////////`
13			`//// ////`
14			`//// Copyright (C) 2001 Rudolf Usselmann ////`
15			`//// rudi@asics.ws ////`
16			`//// ////`
17			`//// This source file may be used and distributed without ////`
18			`//// restriction provided that this copyright statement is not ////`
19			`//// removed from the file and that any derivative work contains ////`
20			`//// the original copyright notice and the associated disclaimer.////`
21			`//// ////`
22			//// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY ////
23			`//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ////`
24			`//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ////`
25			`//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR ////`
26			`//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ////`
27			`//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ////`
28			`//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE ////`
29			`//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR ////`
30			`//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF ////`
31			`//// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ////`
32			`//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT ////`
33			`//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ////`
34			`//// POSSIBILITY OF SUCH DAMAGE. ////`
35			`//// ////`
36			`/////////////////////////////////////////////////////////////////////`
37
38			`// CVS Log`
39			`//`
40			`// $Id: wb_conmax_pri_enc.v,v 1.1.1.1 2001-10-19 11:01:41 rudi Exp $`
41			`//`
42			`// $Date: 2001-10-19 11:01:41 $`
43			`// $Revision: 1.1.1.1 $`
44			`// $Author: rudi $`
45			`// $Locker: $`
46			`// $State: Exp $`
47			`//`
48			`// Change History:`
49			`// $Log: not supported by cvs2svn $`
50			`//`
51			`//`
52			`//`
53			`//`
54
55			`include "wb_conmax_defines.v"
56
57			`module wb_conmax_pri_enc(`
58			`valid,`
59			`pri0, pri1, pri2, pri3,`
60			`pri4, pri5, pri6, pri7,`
61			`pri_out`
62			`);`
63
64			`////////////////////////////////////////////////////////////////////`
65			`//`
66			`// Module Parameters`
67			`//`
68
69			`parameter [1:0] pri_sel = 2'd0;`
70
71			`////////////////////////////////////////////////////////////////////`
72			`//`
73			`// Module IOs`
74			`//`
75
76			`input [7:0] valid;`
77			`input [1:0] pri0, pri1, pri2, pri3;`
78			`input [1:0] pri4, pri5, pri6, pri7;`
79			`output [1:0] pri_out;`
80
81			`////////////////////////////////////////////////////////////////////`
82			`//`
83			`// Local Wires`
84			`//`
85
86			`wire [3:0] pri0_out, pri1_out, pri2_out, pri3_out;`
87			`wire [3:0] pri4_out, pri5_out, pri6_out, pri7_out;`
88			`wire [3:0] pri_out_tmp;`
89			`reg [1:0] pri_out0, pri_out1;`
90			`wire [1:0] pri_out;`
91
92			`////////////////////////////////////////////////////////////////////`
93			`//`
94			`// Priority Decoders`
95			`//`
96
97			`wb_conmax_pri_dec #(pri_sel) pd0(`
98			`.valid( valid[0] ),`
99			`.pri_in( pri0 ),`
100			`.pri_out( pri0_out )`
101			`);`
102
103
104			`wb_conmax_pri_dec #(pri_sel) pd1(`
105			`.valid( valid[1] ),`
106			`.pri_in( pri1 ),`
107			`.pri_out( pri1_out )`
108			`);`
109
110			`wb_conmax_pri_dec #(pri_sel) pd2(`
111			`.valid( valid[2] ),`
112			`.pri_in( pri2 ),`
113			`.pri_out( pri2_out )`
114			`);`
115
116			`wb_conmax_pri_dec #(pri_sel) pd3(`
117			`.valid( valid[3] ),`
118			`.pri_in( pri3 ),`
119			`.pri_out( pri3_out )`
120			`);`
121
122			`wb_conmax_pri_dec #(pri_sel) pd4(`
123			`.valid( valid[4] ),`
124			`.pri_in( pri4 ),`
125			`.pri_out( pri4_out )`
126			`);`
127
128			`wb_conmax_pri_dec #(pri_sel) pd5(`
129			`.valid( valid[5] ),`
130			`.pri_in( pri5 ),`
131			`.pri_out( pri5_out )`
132			`);`
133
134			`wb_conmax_pri_dec #(pri_sel) pd6(`
135			`.valid( valid[6] ),`
136			`.pri_in( pri6 ),`
137			`.pri_out( pri6_out )`
138			`);`
139
140			`wb_conmax_pri_dec #(pri_sel) pd7(`
141			`.valid( valid[7] ),`
142			`.pri_in( pri7 ),`
143			`.pri_out( pri7_out )`
144			`);`
145
146			`////////////////////////////////////////////////////////////////////`
147			`//`
148			`// Priority Encoding`
149			`//`
150
151			`assign pri_out_tmp = pri0_out \| pri1_out \| pri2_out \| pri3_out \|`
152			`pri4_out \| pri5_out \| pri6_out \| pri7_out;`
153
154			`// 4 Priority Levels`
155			`always @(pri_out_tmp)`
156			`if(pri_out_tmp[3]) pri_out1 = 2'h3;`
157			`else`
158			`if(pri_out_tmp[2]) pri_out1 = 2'h2;`
159			`else`
160			`if(pri_out_tmp[1]) pri_out1 = 2'h1;`
161			`else pri_out1 = 2'h0;`
162
163			`// 2 Priority Levels`
164			`always @(pri_out_tmp)`
165			`if(pri_out_tmp[1]) pri_out0 = 2'h1;`
166			`else pri_out0 = 2'h0;`
167
168			`////////////////////////////////////////////////////////////////////`
169			`//`
170			`// Final Priority Output`
171			`//`
172
173			`// Select configured priority`
174
175			`assign pri_out = (pri_sel==2'd0) ? 2'h0 : ( (pri_sel==2'd1) ? pri_out0 : pri_out1 );`
176
177			`endmodule`
178
179

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[/] [wdsp/] [trunk/] [rtl/] [verilog/] [minsoc/] [wb_conmax/] [tags/] [start/] [rtl/] [verilog/] [wb_conmax_pri_enc.v] - Blame information for rev 7