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Rev 11 |
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Line 25... |
`define ALU_PCNT 4'b1100
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`define ALU_PCNT 4'b1100
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`define ALU_PCNTZ 4'b1101
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`define ALU_PCNTZ 4'b1101
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`define ALU_PCNTC 4'b1110
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`define ALU_PCNTC 4'b1110
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`define ALU_RND 4'b1111
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`define ALU_RND 4'b1111
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module au(a,b,clk,arith_op,carry,o,rndin);
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module au(a,b,arith_op,carry,o,rndin);
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// Inputs
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// Inputs
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input [31:0] a;
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input [31:0] a;
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wire [31:0] a;
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wire [31:0] a;
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input [31:0] b;
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input [31:0] b;
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wire [31:0] b;
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wire [31:0] b;
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input clk;
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wire clk;
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input [3:0] arith_op;
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input [3:0] arith_op;
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wire [3:0] arith_op;
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wire [3:0] arith_op;
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input [31:0] rndin;
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input [31:0] rndin;
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wire [31:0] rndin;
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wire [31:0] rndin;
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// Outputs
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// Outputs
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a_chg[2] = a[3] ^^ a[2];
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a_chg[2] = a[3] ^^ a[2];
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a_chg[1] = a[2] ^^ a[1];
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a_chg[1] = a[2] ^^ a[1];
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a_chg[0] = a[1] ^^ a[0];
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a_chg[0] = a[1] ^^ a[0];
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end
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end
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// TODO
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// TODO: Random Number Generator
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// always @ (posedge clk)
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// rnd = rndin;
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always @ (arith_op || a || b) // Main Operation
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always @ (arith_op || a || b) // Main Operation
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case (arith_op)
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case (arith_op)
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`ALU_ADD : // Add
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`ALU_ADD : // Add
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o = a + b;
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o = a + b;
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pcntc1 = PopCntO4(a_chg[15:12]) + PopCntO4(a_chg[11:8]) + PopCntO4(a_chg[7:4]) + PopCntO4(a_chg[3:0]);
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pcntc1 = PopCntO4(a_chg[15:12]) + PopCntO4(a_chg[11:8]) + PopCntO4(a_chg[7:4]) + PopCntO4(a_chg[3:0]);
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o = pcntc0 + pcntc1;
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o = pcntc0 + pcntc1;
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end
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end
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`ALU_RND : // Random
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`ALU_RND : // Random
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o = rnd;
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o = rnd;
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default : // BAD NEWS
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o = 8'h4655434B; // Random data for have fun ;)
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endcase
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endcase
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function [5:0] PopCntO4; // One Count
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function [5:0] PopCntO4; // One Count
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input [3:0] x;
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input [3:0] x;
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begin
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begin
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