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-rw-r--r--techlibs/xilinx/tests/test_dsp48a1_model.v331
1 files changed, 331 insertions, 0 deletions
diff --git a/techlibs/xilinx/tests/test_dsp48a1_model.v b/techlibs/xilinx/tests/test_dsp48a1_model.v
new file mode 100644
index 000000000..66346b47b
--- /dev/null
+++ b/techlibs/xilinx/tests/test_dsp48a1_model.v
@@ -0,0 +1,331 @@
+`timescale 1ns / 1ps
+
+module testbench;
+ parameter integer A0REG = 1;
+ parameter integer A1REG = 1;
+ parameter integer B0REG = 1;
+ parameter integer B1REG = 1;
+ parameter integer CREG = 1;
+ parameter integer DREG = 1;
+ parameter integer MREG = 1;
+ parameter integer PREG = 1;
+ parameter integer CARRYINREG = 1;
+ parameter integer CARRYOUTREG = 1;
+ parameter integer OPMODEREG = 1;
+ parameter CARRYINSEL = "OPMODE5";
+ parameter RSTTYPE = "SYNC";
+
+ reg CLK;
+ reg CEA, CEB, CEC, CED, CEM, CEP, CECARRYIN, CEOPMODE;
+ reg RSTA, RSTB, RSTC, RSTD, RSTM, RSTP, RSTCARRYIN, RSTOPMODE;
+ reg [17:0] A;
+ reg [17:0] B;
+ reg [47:0] C;
+ reg [17:0] D;
+ reg [47:0] PCIN;
+ reg [7:0] OPMODE;
+ reg CARRYIN;
+
+ output CARRYOUTF, REF_CARRYOUTF;
+ output CARRYOUT, REF_CARRYOUT, REF_OLD_CARRYOUT;
+ output [35:0] M, REF_M;
+ output [47:0] P, REF_P, REF_OLD_P;
+ output [17:0] BCOUT, REF_BCOUT, REF_OLD_BCOUT;
+ output [47:0] PCOUT, REF_PCOUT, REF_OLD_PCOUT;
+
+ integer errcount = 0;
+
+ reg ERROR_FLAG = 0;
+
+ task clkcycle;
+ begin
+ #5;
+ CLK = ~CLK;
+ #10;
+ CLK = ~CLK;
+ #2;
+ ERROR_FLAG = 0;
+ if (REF_BCOUT !== BCOUT || REF_OLD_BCOUT != BCOUT) begin
+ $display("ERROR at %1t: REF_BCOUT=%b REF_OLD_BCOUT=%b UUT_BCOUT=%b DIFF=%b", $time, REF_BCOUT, REF_OLD_BCOUT, BCOUT, REF_BCOUT ^ BCOUT);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ if (REF_M !== M) begin
+ $display("ERROR at %1t: REF_M=%b UUT_M=%b DIFF=%b", $time, REF_M, M, REF_M ^ M);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ if (REF_P !== P || REF_OLD_P != P) begin
+ $display("ERROR at %1t: REF_P=%b REF_OLD_P=%b UUT_P=%b DIFF=%b", $time, REF_P, REF_OLD_P, P, REF_P ^ P);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ if (REF_PCOUT !== PCOUT || REF_OLD_PCOUT != PCOUT) begin
+ $display("ERROR at %1t: REF_PCOUT=%b REF_OLD_PCOUT=%b UUT_PCOUT=%b DIFF=%b", $time, REF_PCOUT, REF_OLD_PCOUT, PCOUT, REF_PCOUT ^ PCOUT);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ if (REF_CARRYOUT !== CARRYOUT || (REF_OLD_CARRYOUT != CARRYOUT && !CARRYOUTREG)) begin
+ $display("ERROR at %1t: REF_CARRYOUT=%b REF_OLD_CARRYOUT=%b UUT_CARRYOUT=%b DIFF=%b", $time, REF_CARRYOUT, REF_OLD_CARRYOUT, CARRYOUT, REF_CARRYOUT ^ CARRYOUT);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ if (REF_CARRYOUTF !== CARRYOUTF) begin
+ $display("ERROR at %1t: REF_CARRYOUTF=%b UUT_CARRYOUTF=%b", $time, REF_CARRYOUTF, CARRYOUTF);
+ errcount = errcount + 1;
+ ERROR_FLAG = 1;
+ end
+ #3;
+ end
+ endtask
+
+ reg config_valid = 0;
+ task drc;
+ begin
+ config_valid = 1;
+
+ if (OPMODE[1:0] == 2'b10 && PREG != 1) config_valid = 0;
+ if (OPMODE[3:2] == 2'b10 && PREG != 1) config_valid = 0;
+ end
+ endtask
+
+ initial begin
+ $dumpfile("test_dsp48a1_model.vcd");
+ $dumpvars(0, testbench);
+
+ #2;
+ CLK = 1'b0;
+ {CEA, CEB, CEC, CED, CEM, CEP, CECARRYIN, CEOPMODE} = 8'b11111111;
+ {A, B, C, D, PCIN, OPMODE, CARRYIN} = 0;
+ {RSTA, RSTB, RSTC, RSTD, RSTM, RSTP, RSTCARRYIN, RSTOPMODE} = 8'b11111111;
+ repeat (10) begin
+ #10;
+ CLK = 1'b1;
+ #10;
+ CLK = 1'b0;
+ #10;
+ CLK = 1'b1;
+ #10;
+ CLK = 1'b0;
+ end
+ {RSTA, RSTB, RSTC, RSTD, RSTM, RSTP, RSTCARRYIN, RSTOPMODE} = 0;
+
+ repeat (10000) begin
+ clkcycle;
+ config_valid = 0;
+ while (!config_valid) begin
+ A = $urandom;
+ B = $urandom;
+ C = {$urandom, $urandom};
+ D = $urandom;
+ PCIN = {$urandom, $urandom};
+
+ {CEA, CEB, CEC, CED, CEM, CEP, CECARRYIN, CEOPMODE} = $urandom | $urandom | $urandom;
+ {RSTA, RSTB, RSTC, RSTD, RSTM, RSTP, RSTCARRYIN, RSTOPMODE} = $urandom & $urandom & $urandom & $urandom & $urandom & $urandom;
+ {CARRYIN, OPMODE} = $urandom;
+
+ drc;
+ end
+ end
+
+ if (errcount == 0) begin
+ $display("All tests passed.");
+ $finish;
+ end else begin
+ $display("Caught %1d errors.", errcount);
+ $stop;
+ end
+ end
+
+ DSP48A #(
+ .A0REG (A0REG),
+ .A1REG (A1REG),
+ .B0REG (B0REG),
+ .B1REG (B1REG),
+ .CREG (CREG),
+ .DREG (DREG),
+ .MREG (MREG),
+ .PREG (PREG),
+ .CARRYINREG (CARRYINREG),
+ .OPMODEREG (OPMODEREG),
+ .CARRYINSEL (CARRYINSEL),
+ .RSTTYPE (RSTTYPE)
+ ) ref_old (
+ .A (A),
+ .B (B),
+ .C (C),
+ .D (D),
+ .PCIN (PCIN),
+ .CARRYIN (CARRYIN),
+ .OPMODE (OPMODE),
+ .BCOUT (REF_OLD_BCOUT),
+ .CARRYOUT (REF_OLD_CARRYOUT),
+ .P (REF_OLD_P),
+ .PCOUT (REF_OLD_PCOUT),
+ .CEA (CEA),
+ .CEB (CEB),
+ .CEC (CEC),
+ .CED (CED),
+ .CEM (CEM),
+ .CEP (CEP),
+ .CECARRYIN (CECARRYIN),
+ .CEOPMODE (CEOPMODE),
+ .CLK (CLK),
+ .RSTA (RSTA),
+ .RSTB (RSTB),
+ .RSTC (RSTC),
+ .RSTD (RSTD),
+ .RSTM (RSTM),
+ .RSTP (RSTP),
+ .RSTCARRYIN (RSTCARRYIN),
+ .RSTOPMODE (RSTOPMODE)
+ );
+
+ DSP48A1 #(
+ .A0REG (A0REG),
+ .A1REG (A1REG),
+ .B0REG (B0REG),
+ .B1REG (B1REG),
+ .CREG (CREG),
+ .DREG (DREG),
+ .MREG (MREG),
+ .PREG (PREG),
+ .CARRYINREG (CARRYINREG),
+ .CARRYOUTREG (CARRYOUTREG),
+ .OPMODEREG (OPMODEREG),
+ .CARRYINSEL (CARRYINSEL),
+ .RSTTYPE (RSTTYPE)
+ ) ref (
+ .A (A),
+ .B (B),
+ .C (C),
+ .D (D),
+ .PCIN (PCIN),
+ .CARRYIN (CARRYIN),
+ .OPMODE (OPMODE),
+ .BCOUT (REF_BCOUT),
+ .CARRYOUTF (REF_CARRYOUTF),
+ .CARRYOUT (REF_CARRYOUT),
+ .P (REF_P),
+ .M (REF_M),
+ .PCOUT (REF_PCOUT),
+ .CEA (CEA),
+ .CEB (CEB),
+ .CEC (CEC),
+ .CED (CED),
+ .CEM (CEM),
+ .CEP (CEP),
+ .CECARRYIN (CECARRYIN),
+ .CEOPMODE (CEOPMODE),
+ .CLK (CLK),
+ .RSTA (RSTA),
+ .RSTB (RSTB),
+ .RSTC (RSTC),
+ .RSTD (RSTD),
+ .RSTM (RSTM),
+ .RSTP (RSTP),
+ .RSTCARRYIN (RSTCARRYIN),
+ .RSTOPMODE (RSTOPMODE)
+ );
+
+ DSP48A1_UUT #(
+ .A0REG (A0REG),
+ .A1REG (A1REG),
+ .B0REG (B0REG),
+ .B1REG (B1REG),
+ .CREG (CREG),
+ .DREG (DREG),
+ .MREG (MREG),
+ .PREG (PREG),
+ .CARRYINREG (CARRYINREG),
+ .CARRYOUTREG (CARRYOUTREG),
+ .OPMODEREG (OPMODEREG),
+ .CARRYINSEL (CARRYINSEL),
+ .RSTTYPE (RSTTYPE)
+ ) uut (
+ .A (A),
+ .B (B),
+ .C (C),
+ .D (D),
+ .PCIN (PCIN),
+ .CARRYIN (CARRYIN),
+ .OPMODE (OPMODE),
+ .BCOUT (BCOUT),
+ .CARRYOUTF (CARRYOUTF),
+ .CARRYOUT (CARRYOUT),
+ .P (P),
+ .M (M),
+ .PCOUT (PCOUT),
+ .CEA (CEA),
+ .CEB (CEB),
+ .CEC (CEC),
+ .CED (CED),
+ .CEM (CEM),
+ .CEP (CEP),
+ .CECARRYIN (CECARRYIN),
+ .CEOPMODE (CEOPMODE),
+ .CLK (CLK),
+ .RSTA (RSTA),
+ .RSTB (RSTB),
+ .RSTC (RSTC),
+ .RSTD (RSTD),
+ .RSTM (RSTM),
+ .RSTP (RSTP),
+ .RSTCARRYIN (RSTCARRYIN),
+ .RSTOPMODE (RSTOPMODE)
+ );
+endmodule
+
+module mult_noreg;
+ testbench #(
+ .A0REG (0),
+ .A1REG (0),
+ .B0REG (0),
+ .B1REG (0),
+ .CREG (0),
+ .DREG (0),
+ .MREG (0),
+ .PREG (0),
+ .CARRYINREG (0),
+ .CARRYOUTREG (0),
+ .OPMODEREG (0),
+ .CARRYINSEL ("CARRYIN"),
+ .RSTTYPE ("SYNC")
+ ) testbench ();
+endmodule
+
+module mult_allreg;
+ testbench #(
+ .A0REG (1),
+ .A1REG (1),
+ .B0REG (1),
+ .B1REG (1),
+ .CREG (1),
+ .DREG (1),
+ .MREG (1),
+ .PREG (1),
+ .CARRYINREG (1),
+ .CARRYOUTREG (1),
+ .OPMODEREG (1),
+ .CARRYINSEL ("OPMODE5"),
+ .RSTTYPE ("SYNC")
+ ) testbench ();
+endmodule
+
+module mult_inreg;
+ testbench #(
+ .A0REG (1),
+ .A1REG (1),
+ .B0REG (1),
+ .B1REG (1),
+ .CREG (1),
+ .DREG (1),
+ .MREG (0),
+ .PREG (0),
+ .CARRYINREG (1),
+ .CARRYOUTREG (0),
+ .OPMODEREG (0),
+ .CARRYINSEL ("CARRYIN"),
+ .RSTTYPE ("SYNC")
+ ) testbench ();
+endmodule
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