| Line 23... |
Line 23... |
//------------------------------------------------------
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//------------------------------------------------------
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// Revision Number : 3
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// Revision Number : 3
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// Date of Change : 30th April 2003
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// Date of Change : 30th April 2003
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// Modifier : Thorn Aitch
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// Modifier : Thorn Aitch
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// Description : Release Version 1.0
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// Description : Release Version 1.0
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//------------------------------------------------------
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// Revision Number : 4
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// Date of Change : 10th December 2003
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// Modifier : Thorn Aitch
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// Description : Release Version 1.1
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// Inhibit substitution of "x"
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// except for defalut statement whose
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// case describes all logic spaces.
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//======================================================
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//======================================================
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// Copyright (C) 2002-2003, Thorn Aitch
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// Copyright (C) 2002-2003, Thorn Aitch
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//
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//
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// Designs can be altered while keeping list of
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// Designs can be altered while keeping list of
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// modifications "the same as in GNU" No money can
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// modifications "the same as in GNU" No money can
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| Line 494... |
Line 502... |
DATO_PREV[15: 8] <= MA_DW[15: 8];
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DATO_PREV[15: 8] <= MA_DW[15: 8];
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DATO_PREV[ 7: 0] <= MA_DW[ 7: 0];
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DATO_PREV[ 7: 0] <= MA_DW[ 7: 0];
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end
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end
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default: // 2'b11 don't care
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default: // 2'b11 don't care
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begin
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begin
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DATO_PREV[31:24] <= 8'hxx;
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DATO_PREV[31:24] <= MA_DW[31:24]; // Thorn Aitch 2003/12/10
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DATO_PREV[23:16] <= 8'hxx;
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DATO_PREV[23:16] <= MA_DW[23:16]; // Thorn Aitch 2003/12/10
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DATO_PREV[15: 8] <= 8'hxx;
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DATO_PREV[15: 8] <= MA_DW[15: 8]; // Thorn Aitch 2003/12/10
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DATO_PREV[ 7: 0] <= 8'hxx;
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DATO_PREV[ 7: 0] <= MA_DW[15: 8]; // Thorn Aitch 2003/12/10
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end
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end
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endcase
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endcase
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end
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end
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// output
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// output
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| Line 536... |
Line 544... |
else
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else
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IF_DR <= IF_DR_PREV[15:0];
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IF_DR <= IF_DR_PREV[15:0];
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end
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end
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else
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else
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// IF from IF_BUF
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// IF from IF_BUF
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if ((IF_STATE[2] == 1'b1) && (IF_STATE[0] == 1'b1)) // `S_IFIN or `S_MAEX_IFIN
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//if ((IF_STATE[2] == 1'b1) && (IF_STATE[0] == 1'b1)) // `S_IFIN or `S_MAEX_IFIN
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IF_DR <= IF_IF_BUF;
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// IF_DR <= IF_IF_BUF; // Thorn Aitch 2003/12/10
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else
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//else // Thorn Aitch 2003/12/10
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IF_DR <= 32'hxxxxxxxx;
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// IF_DR <= 32'hxxxxxxxx; // Thorn Aitch 2003/12/10
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IF_DR <= IF_IF_BUF; // Thorn Aitch 2003/12/10
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end
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end
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// output
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// output
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//always @(posedge CLK) begin
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//always @(posedge CLK) begin
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// if ((MEMEND == 1'b1) & ((STATE == `S_IFEX) | ((STATE[2] == 1'b1) && (STATE[0] == 1'b1))))
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// if ((MEMEND == 1'b1) & ((STATE == `S_IFEX) | ((STATE[2] == 1'b1) && (STATE[0] == 1'b1))))
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// begin
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// begin
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| Line 615... |
Line 624... |
end
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end
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2'b10: begin //long
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2'b10: begin //long
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MA_DR[31:0] <= MA_DR_PREV[31:0];
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MA_DR[31:0] <= MA_DR_PREV[31:0];
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end
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end
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default : begin
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default : begin
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MA_DR[31:0] <= 32'hxxxxxxxx;
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//MA_DR[31:0] <= 32'hxxxxxxxx; // Thorn Aitch 2003/12/10
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MA_DR[31:0] <= MA_DR_PREV[31:0]; // Thorn Aitch 2003/12/10
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end
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end
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endcase
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endcase
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end
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end
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// output
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// output
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//always @(posedge CLK) begin
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//always @(posedge CLK) begin
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