--- /dev/null
+module top
+(
+ input [3:0] x,
+ input [3:0] y,
+
+ output [3:0] A,
+ output [3:0] B
+ );
+
+assign A = x + y;
+assign B = x - y;
+
+endmodule
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
synth_ice40
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
select -assert-count 12 t:SB_LUT4
select -assert-count 7 t:SB_CARRY
select -assert-count 2 t:$logic_and
select -assert-count 2 t:$logic_or
-write_verilog ./temp/add_sub_synth.v
+++ /dev/null
-module testbench;
- reg [7:0] in;
-
- wire [3:0] outA,outB;
- wire [3:0] poutA,poutB;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 in = 0;
- repeat (10000) begin
- #5 in = in + 1;
- end
-
- $display("OKAY");
- end
-
- top uut (
- .x(in[3:0]),
- .y(in[7:4]),
- .A(outA),
- .B(outB)
- );
-
-
- assign poutA = in[3:0] + in[7:4];
- assign poutB = in[3:0] - in[7:4];
-
- check_comb add_test(outA, poutA);
- check_comb sub_test(outB, poutB);
- assert_comb sub0_test(outB[2], poutB[2]);
-
-endmodule
-
-module check_comb(input [3:0] test, input [3:0] pat);
- always @*
- begin
- #1;
- if (test != pat)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",test," ",pat);
- $stop;
- end
- end
-endmodule
-
+++ /dev/null
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A = x + y;
-assign B = x - y;
-
-endmodule
+++ /dev/null
-module assert_dff(input clk, input test, input pat);
- always @(posedge clk)
- begin
- #1;
- if (test != pat)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time);
- $stop;
- end
- end
-endmodule
-
-module assert_tri(input en, input A, input B);
- always @(posedge en)
- begin
- #1;
- if (A !== B)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",A," ",B);
- $stop;
- end
- end
-endmodule
-
-module assert_Z(input clk, input A);
- always @(posedge clk)
- begin
- #1;
- if (A === 1'bZ)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",A);
- $stop;
- end
- end
-endmodule
-
-module assert_comb(input A, input B);
- always @(*)
- begin
- #1;
- if (A !== B)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",A," ",B);
- $stop;
- end
- end
-endmodule
--- /dev/null
+module adff
+ ( input d, clk, clr, output reg q );
+ initial begin
+ q = 0;
+ end
+ always @( posedge clk, posedge clr )
+ if ( clr )
+ q <= 1'b0;
+ else
+ q <= d;
+endmodule
+
+module adffn
+ ( input d, clk, clr, output reg q );
+ initial begin
+ q = 0;
+ end
+ always @( posedge clk, negedge clr )
+ if ( !clr )
+ q <= 1'b0;
+ else
+ q <= d;
+endmodule
+
+module dffe
+ ( input d, clk, en, output reg q );
+ initial begin
+ q = 0;
+ end
+ always @( posedge clk )
+ if ( en )
+ q <= d;
+endmodule
+
+module dffsr
+ ( input d, clk, pre, clr, output reg q );
+ initial begin
+ q = 0;
+ end
+ always @( posedge clk, posedge pre, posedge clr )
+ if ( clr )
+ q <= 1'b0;
+ else if ( pre )
+ q <= 1'b1;
+ else
+ q <= d;
+endmodule
+
+module ndffnsnr
+ ( input d, clk, pre, clr, output reg q );
+ initial begin
+ q = 0;
+ end
+ always @( negedge clk, negedge pre, negedge clr )
+ if ( !clr )
+ q <= 1'b0;
+ else if ( !pre )
+ q <= 1'b1;
+ else
+ q <= d;
+endmodule
+
+module top (
+input clk,
+input clr,
+input pre,
+input a,
+output b,b1,b2,b3,b4
+);
+
+dffsr u_dffsr (
+ .clk (clk ),
+ .clr (clr),
+ .pre (pre),
+ .d (a ),
+ .q (b )
+ );
+
+ndffnsnr u_ndffnsnr (
+ .clk (clk ),
+ .clr (clr),
+ .pre (pre),
+ .d (a ),
+ .q (b1 )
+ );
+
+adff u_adff (
+ .clk (clk ),
+ .clr (clr),
+ .d (a ),
+ .q (b2 )
+ );
+
+adffn u_adffn (
+ .clk (clk ),
+ .clr (clr),
+ .d (a ),
+ .q (b3 )
+ );
+
+dffe u_dffe (
+ .clk (clk ),
+ .en (clr),
+ .d (a ),
+ .q (b4 )
+ );
+
+endmodule
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
+proc
+flatten
+dff2dffe
synth_ice40
+#equiv_opt -assert -map +/ice40/cells_sim.v -map +/simcells.v synth_ice40
+equiv_opt -map +/ice40/cells_sim.v -map +/simcells.v synth_ice40
+design -load postopt
select -assert-count 2 t:SB_DFFR
select -assert-count 1 t:SB_DFFE
-write_verilog ./temp/dffs_synth.v
+select -assert-count 4 t:SB_LUT4
+select -assert-count 1 t:$_DFFSR_PPP_
+select -assert-count 1 t:$_DFFSR_NPP_
+++ /dev/null
-module testbench;
- reg clk;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 clk = 0;
- repeat (10000) begin
- #5 clk = 1;
- #5 clk = 0;
- end
-
- $display("OKAY");
- end
-
-
- reg [2:0] dinA = 0;
- wire doutB,doutB1,doutB2,doutB3,doutB4;
- reg dff,ndff,adff,adffn,dffe = 0;
-
- top uut (
- .clk (clk ),
- .a (dinA[0] ),
- .pre (dinA[1] ),
- .clr (dinA[2] ),
- .b (doutB ),
- .b1 (doutB1 ),
- .b2 (doutB2 ),
- .b3 (doutB3 ),
- .b4 (doutB4 )
- );
-
- always @(posedge clk) begin
- #3;
- dinA <= dinA + 1;
- end
-
- always @( posedge clk, posedge dinA[1], posedge dinA[2] )
- if ( dinA[2] )
- dff <= 1'b0;
- else if ( dinA[1] )
- dff <= 1'b1;
- else
- dff <= dinA[0];
-
- always @( negedge clk, negedge dinA[1], negedge dinA[2] )
- if ( !dinA[2] )
- ndff <= 1'b0;
- else if ( !dinA[1] )
- ndff <= 1'b1;
- else
- ndff <= dinA[0];
-
- always @( posedge clk, posedge dinA[2] )
- if ( dinA[2] )
- adff <= 1'b0;
- else
- adff <= dinA[0];
-
- always @( posedge clk, negedge dinA[2] )
- if ( !dinA[2] )
- adffn <= 1'b0;
- else
- adffn <= dinA[0];
-
- always @( posedge clk )
- if ( dinA[2] )
- dffe <= dinA[0];
-
- assert_dff dff_test(.clk(clk), .test(doutB), .pat(dff));
- assert_dff ndff_test(.clk(clk), .test(doutB1), .pat(ndff));
- assert_dff adff_test(.clk(clk), .test(doutB2), .pat(adff));
- assert_dff adffn_test(.clk(clk), .test(doutB3), .pat(adffn));
- assert_dff dffe_test(.clk(clk), .test(doutB4), .pat(dffe));
-
-endmodule
+++ /dev/null
-module adff
- ( input d, clk, clr, output reg q );
- initial begin
- q = 0;
- end
- always @( posedge clk, posedge clr )
- if ( clr )
- q <= 1'b0;
- else
- q <= d;
-endmodule
-
-module adffn
- ( input d, clk, clr, output reg q );
- initial begin
- q = 0;
- end
- always @( posedge clk, negedge clr )
- if ( !clr )
- q <= 1'b0;
- else
- q <= d;
-endmodule
-
-module dffe
- ( input d, clk, en, output reg q );
- initial begin
- q = 0;
- end
- always @( posedge clk )
- if ( en )
- q <= d;
-endmodule
-
-module dffsr
- ( input d, clk, pre, clr, output reg q );
- initial begin
- q = 0;
- end
- always @( posedge clk, posedge pre, posedge clr )
- if ( clr )
- q <= 1'b0;
- else if ( pre )
- q <= 1'b1;
- else
- q <= d;
-endmodule
-
-module ndffnsnr
- ( input d, clk, pre, clr, output reg q );
- initial begin
- q = 0;
- end
- always @( negedge clk, negedge pre, negedge clr )
- if ( !clr )
- q <= 1'b0;
- else if ( !pre )
- q <= 1'b1;
- else
- q <= d;
-endmodule
-
-module top (
-input clk,
-input clr,
-input pre,
-input a,
-output b,b1,b2,b3,b4
-);
-
-dffsr u_dffsr (
- .clk (clk ),
- .clr (clr),
- .pre (pre),
- .d (a ),
- .q (b )
- );
-
-ndffnsnr u_ndffnsnr (
- .clk (clk ),
- .clr (clr),
- .pre (pre),
- .d (a ),
- .q (b1 )
- );
-
-adff u_adff (
- .clk (clk ),
- .clr (clr),
- .d (a ),
- .q (b2 )
- );
-
-adffn u_adffn (
- .clk (clk ),
- .clr (clr),
- .d (a ),
- .q (b3 )
- );
-
-dffe u_dffe (
- .clk (clk ),
- .en (clr),
- .d (a ),
- .q (b4 )
- );
-
-endmodule
--- /dev/null
+module top
+(
+ input [3:0] x,
+ input [3:0] y,
+
+ output [3:0] A,
+ output [3:0] B
+ );
+
+assign A = x % y;
+assign B = x / y;
+
+endmodule
synth_ice40
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
-select -assert-count 89 t:SB_LUT4
-select -assert-count 66 t:SB_CARRY
-write_verilog ./temp/div_mod_synth.v
+#equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+equiv_opt -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
+select -assert-count 85 t:SB_LUT4
+select -assert-count 54 t:SB_CARRY
+++ /dev/null
-module testbench;
- reg [7:0] in;
-
- wire [3:0] outA,outB;
- wire [3:0] poutA,poutB;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 in = 0;
- repeat (10000) begin
- #5 in = in + 1;
- end
-
- $display("OKAY");
- end
-
- top uut (
- .x(in[3:0]),
- .y(in[7:4]),
- .A(outA),
- .B(outB)
- );
-
-
- assign poutA = in[3:0] % in[7:4];
- assign poutB = in[3:0] / in[7:4];
-
- check_comb mod_test(in[7:4], outA, poutA);
- check_comb div_test(in[7:4], outB, poutB);
- //assert_comb div2_test(outB[2], poutB[2]);
-
-endmodule
-
-module check_comb(input [3:0] divisor, input [3:0] test, input [3:0] pat);
- always @*
- begin
- #1;
- if (divisor != 4'b0000)
- if (test !== pat)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",test," ",pat);
- $stop;
- end
- end
-endmodule
-
+++ /dev/null
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A = x % y;
-assign B = x / y;
-
-endmodule
--- /dev/null
+module latchp
+ ( input d, clk, en, output reg q );
+ always @*
+ if ( en )
+ q <= d;
+endmodule
+
+module latchn
+ ( input d, clk, en, output reg q );
+ always @*
+ if ( !en )
+ q <= d;
+endmodule
+
+module latchsr
+ ( input d, clk, en, clr, pre, output reg q );
+ always @*
+ if ( clr )
+ q <= 1'b0;
+ else if ( pre )
+ q <= 1'b1;
+ else if ( en )
+ q <= d;
+endmodule
+
+
+module top (
+input clk,
+input clr,
+input pre,
+input a,
+output b,b1,b2
+);
+
+
+latchp u_latchp (
+ .en (clk ),
+ .d (a ),
+ .q (b )
+ );
+
+
+latchn u_latchn (
+ .en (clk ),
+ .d (a ),
+ .q (b1 )
+ );
+
+
+latchsr u_latchsr (
+ .en (clk ),
+ .clr (clr),
+ .pre (pre),
+ .d (a ),
+ .q (b2 )
+ );
+
+endmodule
synth_ice40
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
+#equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+equiv_opt -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
proc
select -assert-count 5 t:SB_LUT4
-write_verilog ./temp/latches_synth.v
+++ /dev/null
-module testbench;
- reg clk;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 clk = 0;
- repeat (10000) begin
- #5 clk = 1;
- #5 clk = 0;
- end
-
- $display("OKAY");
- end
-
-
- reg [2:0] dinA = 0;
- wire doutB,doutB1,doutB2;
- reg lat,latn,latsr = 0;
-
- top uut (
- .clk (clk ),
- .a (dinA[0] ),
- .pre (dinA[1] ),
- .clr (dinA[2] ),
- .b (doutB ),
- .b1 (doutB1 ),
- .b2 (doutB2 )
- );
-
- always @(posedge clk) begin
- #3;
- dinA <= dinA + 1;
- end
-
- always @*
- if ( clk )
- lat <= dinA[0];
-
-
- always @*
- if ( !clk )
- latn <= dinA[0];
-
-
- always @*
- if ( dinA[2] )
- latsr <= 1'b0;
- else if ( dinA[1] )
- latsr <= 1'b1;
- else if ( clk )
- latsr <= dinA[0];
-
- assert_dff lat_test(.clk(clk), .test(doutB), .pat(lat));
- assert_dff latn_test(.clk(clk), .test(doutB1), .pat(latn));
- assert_dff latsr_test(.clk(clk), .test(doutB2), .pat(latsr));
-
-endmodule
+++ /dev/null
-module latchp
- ( input d, clk, en, output reg q );
- always @*
- if ( en )
- q <= d;
-endmodule
-
-module latchn
- ( input d, clk, en, output reg q );
- always @*
- if ( !en )
- q <= d;
-endmodule
-
-module latchsr
- ( input d, clk, en, clr, pre, output reg q );
- always @*
- if ( clr )
- q <= 1'b0;
- else if ( pre )
- q <= 1'b1;
- else if ( en )
- q <= d;
-endmodule
-
-
-module top (
-input clk,
-input clr,
-input pre,
-input a,
-output b,b1,b2
-);
-
-
-latchp u_latchp (
- .en (clk ),
- .d (a ),
- .q (b )
- );
-
-
-latchn u_latchn (
- .en (clk ),
- .d (a ),
- .q (b1 )
- );
-
-
-latchsr u_latchsr (
- .en (clk ),
- .clr (clr),
- .pre (pre),
- .d (a ),
- .q (b2 )
- );
-
-endmodule
--- /dev/null
+module top
+(
+ input [7:0] data_a,
+ input [6:1] addr_a,
+ input we_a, clk,
+ output reg [7:0] q_a
+);
+ // Declare the RAM variable
+ reg [7:0] ram[63:0];
+
+ // Port A
+ always @ (posedge clk)
+ begin
+ if (we_a)
+ begin
+ ram[addr_a] <= data_a;
+ q_a <= data_a;
+ end
+ q_a <= ram[addr_a];
+ end
+endmodule
proc
memory
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
synth_ice40
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
+
select -assert-count 8 t:SB_DFF
select -assert-count 512 t:SB_DFFE
-write_verilog ./temp/memory_synth.v
+++ /dev/null
-module testbench;
- reg clk;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 clk = 0;
- repeat (10000) begin
- #5 clk = 1;
- #5 clk = 0;
- end
-
- $display("OKAY");
- end
-
-
- reg [7:0] data_a = 0;
- reg [5:0] addr_a = 0;
- reg we_a = 0;
- reg re_a = 1;
- wire [7:0] q_a;
- reg mem_init = 0;
-
- reg [7:0] pq_a;
-
- top uut (
- .data_a(data_a),
- .addr_a(addr_a),
- .we_a(we_a),
- .clk(clk),
- .q_a(q_a)
- );
-
- always @(posedge clk) begin
- #3;
- data_a <= data_a + 17;
-
- addr_a <= addr_a + 1;
- end
-
- always @(posedge addr_a) begin
- #10;
- if(addr_a > 6'h3E)
- mem_init <= 1;
- end
-
- always @(posedge clk) begin
- //#3;
- we_a <= !we_a;
- end
-
- // Declare the RAM variable for check
- reg [7:0] ram[63:0];
-
- // Port A for check
- always @ (posedge clk)
- begin
- if (we_a)
- begin
- ram[addr_a] <= data_a;
- pq_a <= data_a;
- end
- pq_a <= ram[addr_a];
- end
-
- uut_mem_checker port_a_test(.clk(clk), .init(mem_init), .en(!we_a), .A(q_a), .B(pq_a));
-
-endmodule
-
-module uut_mem_checker(input clk, input init, input en, input [7:0] A, input [7:0] B);
- always @(posedge clk)
- begin
- #1;
- if (en == 1 & init == 1 & A !== B)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",A," ",B);
- $stop;
- end
- end
-endmodule
+++ /dev/null
-module top
-(
- input [7:0] data_a,
- input [6:1] addr_a,
- input we_a, clk,
- output reg [7:0] q_a
-);
- // Declare the RAM variable
- reg [7:0] ram[63:0];
-
- // Port A
- always @ (posedge clk)
- begin
- if (we_a)
- begin
- ram[addr_a] <= data_a;
- q_a <= data_a;
- end
- q_a <= ram[addr_a];
- end
-endmodule
--- /dev/null
+module top
+(
+ input [3:0] x,
+ input [3:0] y,
+
+ output [3:0] A,
+ output [3:0] B
+ );
+
+assign A = x * y;
+assign B = x ** y;
+
+endmodule
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
synth_ice40
-select -assert-count 15 t:SB_LUT4
+#equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+equiv_opt -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
+select -assert-count 16 t:SB_LUT4
select -assert-count 4 t:SB_CARRY
select -assert-count 1 t:$pow
-write_verilog ./temp/mul_pow_synth.v
+++ /dev/null
-module testbench;
- reg [7:0] in;
-
- wire [3:0] outA,outB;
- wire [3:0] poutA,poutB;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 in = 0;
- repeat (10000) begin
- #5 in = in + 1;
- end
-
- $display("OKAY");
- end
-
- top uut (
- .x(in[3:0]),
- .y(in[7:4]),
- .A(outA),
- .B(outB)
- );
-
-
- assign poutA = in[3:0] * in[7:4];
- assign poutB = in[3:0] ** in[7:4];
-
- check_comb mul_test(outA, poutA);
- check_comb pow_test(outB, poutB);
- assert_comb pow2_test(outB[2], poutB[2]);
-
-endmodule
-
-module check_comb(input [3:0] test, input [3:0] pat);
- always @*
- begin
- #1;
- if (test !== pat)
- begin
- $display("ERROR: ASSERTION FAILED in %m:",$time," ",test," ",pat);
- $stop;
- end
- end
-endmodule
-
+++ /dev/null
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A = x * y;
-assign B = x ** y;
-
-endmodule
--- /dev/null
+module mux2 (S,A,B,Y);
+ input S;
+ input A,B;
+ output reg Y;
+
+ always @(*)
+ Y = (S)? B : A;
+endmodule
+
+module mux4 ( S, D, Y );
+
+input[1:0] S;
+input[3:0] D;
+output Y;
+
+reg Y;
+wire[1:0] S;
+wire[3:0] D;
+
+always @*
+begin
+ case( S )
+ 0 : Y = D[0];
+ 1 : Y = D[1];
+ 2 : Y = D[2];
+ 3 : Y = D[3];
+ endcase
+end
+
+endmodule
+
+module mux8 ( S, D, Y );
+
+input[2:0] S;
+input[7:0] D;
+output Y;
+
+reg Y;
+wire[2:0] S;
+wire[7:0] D;
+
+always @*
+begin
+ case( S )
+ 0 : Y = D[0];
+ 1 : Y = D[1];
+ 2 : Y = D[2];
+ 3 : Y = D[3];
+ 4 : Y = D[4];
+ 5 : Y = D[5];
+ 6 : Y = D[6];
+ 7 : Y = D[7];
+ endcase
+end
+
+endmodule
+
+module mux16 (D, S, Y);
+ input [15:0] D;
+ input [3:0] S;
+ output Y;
+
+assign Y = D[S];
+
+endmodule
+
+
+module top (
+input [3:0] S,
+input [15:0] D,
+output M2,M4,M8,M16
+);
+
+mux2 u_mux2 (
+ .S (S[0]),
+ .A (D[0]),
+ .B (D[1]),
+ .Y (M2)
+ );
+
+
+mux4 u_mux4 (
+ .S (S[1:0]),
+ .D (D[3:0]),
+ .Y (M4)
+ );
+
+mux8 u_mux8 (
+ .S (S[2:0]),
+ .D (D[7:0]),
+ .Y (M8)
+ );
+
+mux16 u_mux16 (
+ .S (S[3:0]),
+ .D (D[15:0]),
+ .Y (M16)
+ );
+
+endmodule
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
+
synth_ice40
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40
+design -load postopt
select -assert-count 20 t:SB_LUT4
select -assert-count 1 t:SB_CARRY
-write_verilog ./temp/mux_synth.v
+++ /dev/null
-module testbench;
- reg clk;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 clk = 0;
- repeat (10000) begin
- #5 clk = 1;
- #5 clk = 0;
- end
-
- $display("OKAY");
- end
-
-
- reg [15:0] D = 1;
- reg [3:0] S = 0;
- wire M2,M4,M8,M16;
-
- top uut (
- .S (S ),
- .D (D ),
- .M2 (M2 ),
- .M4 (M4 ),
- .M8 (M8 ),
- .M16 (M16 )
- );
-
- always @(posedge clk) begin
- //#3;
- D <= {D[14:0],D[15]};
- //D <= D <<< 1;
- S <= S + 1;
- end
-
- assert_tri m2_test(.en(clk), .A(D[0]|D[1]), .B(M2));
- assert_tri m4_test(.en(clk), .A(D[0]|D[1]|D[2]|D[3]), .B(M4));
- assert_tri m8_test(.en(clk), .A(!S[3]), .B(M8));
- assert_tri m16_test(.en(clk), .A(1'b1), .B(M16));
-
-endmodule
+++ /dev/null
-module mux2 (S,A,B,Y);
- input S;
- input A,B;
- output reg Y;
-
- always @(*)
- Y = (S)? B : A;
-endmodule
-
-module mux4 ( S, D, Y );
-
-input[1:0] S;
-input[3:0] D;
-output Y;
-
-reg Y;
-wire[1:0] S;
-wire[3:0] D;
-
-always @*
-begin
- case( S )
- 0 : Y = D[0];
- 1 : Y = D[1];
- 2 : Y = D[2];
- 3 : Y = D[3];
- endcase
-end
-
-endmodule
-
-module mux8 ( S, D, Y );
-
-input[2:0] S;
-input[7:0] D;
-output Y;
-
-reg Y;
-wire[2:0] S;
-wire[7:0] D;
-
-always @*
-begin
- case( S )
- 0 : Y = D[0];
- 1 : Y = D[1];
- 2 : Y = D[2];
- 3 : Y = D[3];
- 4 : Y = D[4];
- 5 : Y = D[5];
- 6 : Y = D[6];
- 7 : Y = D[7];
- endcase
-end
-
-endmodule
-
-module mux16 (D, S, Y);
- input [15:0] D;
- input [3:0] S;
- output Y;
-
-assign Y = D[S];
-
-endmodule
-
-
-module top (
-input [3:0] S,
-input [15:0] D,
-output M2,M4,M8,M16
-);
-
-mux2 u_mux2 (
- .S (S[0]),
- .A (D[0]),
- .B (D[1]),
- .Y (M2)
- );
-
-
-mux4 u_mux4 (
- .S (S[1:0]),
- .D (D[3:0]),
- .Y (M4)
- );
-
-mux8 u_mux8 (
- .S (S[2:0]),
- .D (D[7:0]),
- .Y (M8)
- );
-
-mux16 u_mux16 (
- .S (S[3:0]),
- .D (D[15:0]),
- .Y (M16)
- );
-
-endmodule
#!/bin/bash
set -e
-if [ -f "../../../../../techlibs/common/simcells.v" ]; then
- COMMON_PREFIX=../../../../../techlibs/common
- TECHLIBS_PREFIX=../../../../../techlibs
-else
- COMMON_PREFIX=/usr/local/share/yosys
- TECHLIBS_PREFIX=/usr/local/share/yosys
-fi
-for x in *_top.v; do
+for x in *.v; do
echo "Running $x.."
- ../../yosys -q -s ${x%_top.v}.ys -l ./temp/${x%.v}.log $x
- echo "Simulating $x.."
- iverilog -o ./temp/${x%_top.v}_testbench ${x%_top.v}_tb.v ./temp/${x%_top.v}_synth.v common.v $COMMON_PREFIX/simcells.v $TECHLIBS_PREFIX/ice40/cells_sim.v
- if ! vvp -N ./temp/${x%_top.v}_testbench > ./temp/${x%_top.v}_testbench.log 2>&1; then
- grep 'ERROR' ./temp/${x%_top.v}_testbench.log
- exit 0
- elif grep 'ERROR' ./temp/${x%_top.v}_testbench.log || ! grep 'OKAY' ./temp/${x%_top.v}_testbench.log; then
- exit 0
- fi
+ ../../yosys -q -s ${x%.v}.ys -l ./temp/${x%.v}.log $x
done
--- /dev/null
+module tristate (en, i, o);
+ input en;
+ input i;
+ output reg o;
+
+ always @(en or i)
+ o <= (en)? i : 1'bZ;
+endmodule
+
+
+module top (
+input en,
+input a,
+output b
+);
+
+tristate u_tri (
+ .en (en ),
+ .i (a ),
+ .o (b )
+ );
+
+endmodule
-equiv_opt -map ../../techlibs/ice40/cells_sim.v synth_ice40
synth_ice40
+equiv_opt -assert -map +/ice40/cells_sim.v -map +/simcells.v synth_ice40
+design -load postopt
select -assert-count 1 t:SB_LUT4
select -assert-count 1 t:SB_CARRY
select -assert-count 1 t:$_TBUF_
-write_verilog ./temp/tribuf_synth.v
+++ /dev/null
-module testbench;
- reg en;
-
- initial begin
- // $dumpfile("testbench.vcd");
- // $dumpvars(0, testbench);
-
- #5 en = 0;
- repeat (10000) begin
- #5 en = 1;
- #5 en = 0;
- end
-
- $display("OKAY");
- end
-
-
- reg dinA = 0;
- wire doutB;
-
- top uut (
- .en (en ),
- .a (dinA ),
- .b (doutB )
- );
-
- always @(posedge en) begin
- #3;
- dinA <= !dinA;
- end
-
- assert_tri b_test(.en(en), .A(dinA), .B(doutB));
-
-endmodule
+++ /dev/null
-module tristate (en, i, o);
- input en;
- input i;
- output reg o;
-
- always @(en or i)
- o <= (en)? i : 1'bZ;
-endmodule
-
-
-module top (
-input en,
-input a,
-output b
-);
-
-tristate u_tri (
- .en (en ),
- .i (a ),
- .o (b )
- );
-
-endmodule
projects / yosys.git / commitdiff