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[/] [a-z80/] [trunk/] [cpu/] [control/] [ir.v] - Diff between revs 13 and 16

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// Copyright (C) 1991-2013 Altera Corporation
// Copyright (C) 1991-2013 Altera Corporation
// Your use of Altera Corporation's design tools, logic functions 
// Your use of Altera Corporation's design tools, logic functions 
// and other software and tools, and its AMPP partner logic 
// and other software and tools, and its AMPP partner logic 
// functions, and any output files from any of the foregoing 
// functions, and any output files from any of the foregoing 
// (including device programming or simulation files), and any 
// (including device programming or simulation files), and any 
// associated documentation or information are expressly subject 
// associated documentation or information are expressly subject 
// to the terms and conditions of the Altera Program License 
// to the terms and conditions of the Altera Program License 
// Subscription Agreement, Altera MegaCore Function License 
// Subscription Agreement, Altera MegaCore Function License 
// Agreement, or other applicable license agreement, including, 
// Agreement, or other applicable license agreement, including, 
// without limitation, that your use is for the sole purpose of 
// without limitation, that your use is for the sole purpose of 
// programming logic devices manufactured by Altera and sold by 
// programming logic devices manufactured by Altera and sold by 
// Altera or its authorized distributors.  Please refer to the 
// Altera or its authorized distributors.  Please refer to the 
// applicable agreement for further details.
// applicable agreement for further details.
 
 
// PROGRAM              "Quartus II 64-Bit"
// PROGRAM              "Quartus II 64-Bit"
// VERSION              "Version 13.0.1 Build 232 06/12/2013 Service Pack 1 SJ Web Edition"
// VERSION              "Version 13.0.1 Build 232 06/12/2013 Service Pack 1 SJ Web Edition"
// CREATED              "Fri Feb 26 22:23:08 2016"
// CREATED              "Sat Dec 10 08:56:46 2016"
 
 
module ir(
module ir(
        ctl_ir_we,
        ctl_ir_we,
        clk,
        clk,
        nreset,
        nreset,
        hold_clk_wait,
        nhold_clk_wait,
        db,
        db,
        opcode
        opcode
);
);
 
 
 
 
input wire      ctl_ir_we;
input wire      ctl_ir_we;
input wire      clk;
input wire      clk;
input wire      nreset;
input wire      nreset;
input wire      hold_clk_wait;
input wire      nhold_clk_wait;
input wire      [7:0] db;
input wire      [7:0] db;
output reg      [7:0] opcode;
output reg      [7:0] opcode;
 
 
wire    SYNTHESIZED_WIRE_0;
wire    SYNTHESIZED_WIRE_0;
wire    SYNTHESIZED_WIRE_1;
 
 
 
 
 
 
 
 
 
assign  SYNTHESIZED_WIRE_0 =  ~hold_clk_wait;
assign  SYNTHESIZED_WIRE_0 = ctl_ir_we & nhold_clk_wait;
 
 
assign  SYNTHESIZED_WIRE_1 = ctl_ir_we & SYNTHESIZED_WIRE_0;
 
 
 
 
 
always@(posedge clk or negedge nreset)
always@(posedge clk or negedge nreset)
begin
begin
if (!nreset)
if (!nreset)
        begin
        begin
        opcode[7:0] <= 8'b00000000;
        opcode[7:0] <= 8'b00000000;
        end
        end
else
else
if (SYNTHESIZED_WIRE_1)
if (SYNTHESIZED_WIRE_0)
        begin
        begin
        opcode[7:0] <= db[7:0];
        opcode[7:0] <= db[7:0];
        end
        end
end
end
 
 
 
 
endmodule
endmodule
 
 

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