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module LUT1(output F, input I0);
parameter [1:0] INIT = 0;
assign F = I0 ? INIT[1] : INIT[0];
endmodule
module LUT2(output F, input I0, I1);
parameter [3:0] INIT = 0;
wire [ 1: 0] s1 = I1 ? INIT[ 3: 2] : INIT[ 1: 0];
assign F = I0 ? s1[1] : s1[0];
endmodule
module LUT3(output F, input I0, I1, I2);
parameter [7:0] INIT = 0;
wire [ 3: 0] s2 = I2 ? INIT[ 7: 4] : INIT[ 3: 0];
wire [ 1: 0] s1 = I1 ? s2[ 3: 2] : s2[ 1: 0];
assign F = I0 ? s1[1] : s1[0];
endmodule
module LUT4(output F, input I0, I1, I2, I3);
parameter [15:0] INIT = 0;
wire [ 7: 0] s3 = I3 ? INIT[15: 8] : INIT[ 7: 0];
wire [ 3: 0] s2 = I2 ? s3[ 7: 4] : s3[ 3: 0];
wire [ 1: 0] s1 = I1 ? s2[ 3: 2] : s2[ 1: 0];
assign F = I0 ? s1[1] : s1[0];
endmodule
module DFF (output reg Q, input CLK, D);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK)
Q <= D;
endmodule
module DFFN (output reg Q, input CLK, D);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(negedge CLK)
Q <= D;
endmodule
module DFFE (output reg Q, input D, CLK, CE);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK) begin
if (CE)
Q <= D;
end
endmodule // DFFE (positive clock edge; clock enable)
module DFFS (output reg Q, input D, CLK, SET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK) begin
if (SET)
Q <= 1'b1;
else
Q <= D;
end
endmodule // DFFS (positive clock edge; synchronous set)
module DFFSE (output reg Q, input D, CLK, CE, SET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK) begin
if (SET)
Q <= 1'b1;
else if (CE)
Q <= D;
end
endmodule // DFFSE (positive clock edge; synchronous set takes precedence over clock enable)
module DFFR (output reg Q, input D, CLK, RESET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK) begin
if (RESET)
Q <= 1'b0;
else
Q <= D;
end
endmodule // DFFR (positive clock edge; synchronous reset)
module DFFRE (output reg Q, input D, CLK, CE, RESET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK) begin
if (RESET)
Q <= 1'b0;
else if (CE)
Q <= D;
end
endmodule // DFFRE (positive clock edge; synchronous reset takes precedence over clock enable)
module DFFP (output reg Q, input D, CLK, PRESET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK or posedge PRESET) begin
if(PRESET)
Q <= 1'b1;
else
Q <= D;
end
endmodule // DFFP (positive clock edge; asynchronous preset)
module DFFPE (output reg Q, input D, CLK, CE, PRESET);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK or posedge PRESET) begin
if(PRESET)
Q <= 1'b1;
else if (CE)
Q <= D;
end
endmodule // DFFPE (positive clock edge; asynchronous preset; clock enable)
module DFFC (output reg Q, input D, CLK, CLEAR);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK or posedge CLEAR) begin
if(CLEAR)
Q <= 1'b0;
else
Q <= D;
end
endmodule // DFFC (positive clock edge; asynchronous clear)
module DFFCE (output reg Q, input D, CLK, CE, CLEAR);
parameter [0:0] INIT = 1'b0;
initial Q = INIT;
always @(posedge CLK or posedge CLEAR) begin
if(CLEAR)
Q <= 1'b0;
else if (CE)
Q <= D;
end
endmodule // DFFCE (positive clock edge; asynchronous clear; clock enable)
// TODO add more DFF sim cells
module VCC(output V);
assign V = 1;
endmodule
module GND(output G);
assign G = 0;
endmodule
module IBUF(output O, input I);
assign O = I;
endmodule
module OBUF(output O, input I);
assign O = I;
endmodule
module GSR (input GSRI);
wire GSRO = GSRI;
endmodule
module ALU (input I0, input I1, input I3, input CIN, output COUT, output SUM);
parameter [3:0] ALU_MODE = 0; // default 0 = ADD
assign {COUT, SUM} = CIN + I1 + I0;
endmodule // alu
module RAM16S4 (DO, DI, AD, WRE, CLK);
parameter WIDTH = 4;
parameter INIT_0 = 16'h0000;
parameter INIT_1 = 16'h0000;
parameter INIT_2 = 16'h0000;
parameter INIT_3 = 16'h0000;
input [WIDTH-1:0] AD;
input [WIDTH-1:0] DI;
output [WIDTH-1:0] DO;
input CLK;
input WRE;
reg [15:0] mem0, mem1, mem2, mem3;
initial begin
mem0 = INIT_0;
mem1 = INIT_1;
mem2 = INIT_2;
mem3 = INIT_3;
end
assign DO[0] = mem0[AD];
assign DO[1] = mem1[AD];
assign DO[2] = mem2[AD];
assign DO[3] = mem3[AD];
always @(posedge CLK) begin
if (WRE) begin
mem0[AD] <= DI[0];
mem1[AD] <= DI[1];
mem2[AD] <= DI[2];
mem3[AD] <= DI[3];
end
end
endmodule // RAM16S4
(* blackbox *)
module SDP (DO, DI, BLKSEL, ADA, ADB, WREA, WREB, CLKA, CLKB, CEA, CEB, OCE, RESETA, RESETB);
//1'b0: Bypass mode; 1'b1 Pipeline mode
parameter READ_MODE = 1'b0;
parameter BIT_WIDTH_0 = 32; // 1, 2, 4, 8, 16, 32
parameter BIT_WIDTH_1 = 32; // 1, 2, 4, 8, 16, 32
parameter BLK_SEL = 3'b000;
parameter RESET_MODE = "SYNC";
parameter INIT_RAM_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_RAM_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
input CLKA, CEA, CLKB, CEB;
input OCE; // clock enable of memory output register
input RESETA, RESETB; // resets output registers, not memory contents
input WREA, WREB; // 1'b0: read enabled; 1'b1: write enabled
input [13:0] ADA, ADB;
input [31:0] DI;
input [2:0] BLKSEL;
output [31:0] DO;
endmodule
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