Avoid mixing module port declaration styles in ice40 cells_sim.v

The current code requires workarounds for several simulators
For modelsim, the file must be compiled with -mixedansiports and
xsim needs --relax.

diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v
index 814895e70aeb9355b32ff2241f51c0c0a481705d..45a02111f0a200b0c2668ecbe37b37bc832051fa 100644 (file)
--- a/techlibs/ice40/cells_sim.v
+++ b/techlibs/ice40/cells_sim.v
@@ -1,6 +1,6 @@
 
-`define SB_DFF_REG reg Q = 0;
-// `define SB_DFF_REG reg Q;
+`define SB_DFF_REG reg Q = 0
+// `define SB_DFF_REG reg Q
 
 // SiliconBlue IO Cells
 
@@ -132,21 +132,18 @@ endmodule
 
 // Positive Edge SiliconBlue FF Cells
 
-module SB_DFF (output Q, input C, D);
-       `SB_DFF_REG
+module SB_DFF (output `SB_DFF_REG, input C, D);
        always @(posedge C)
                Q <= D;
 endmodule
 
-module SB_DFFE (output Q, input C, E, D);
-       `SB_DFF_REG
+module SB_DFFE (output `SB_DFF_REG, input C, E, D);
        always @(posedge C)
                if (E)
                        Q <= D;
 endmodule
 
-module SB_DFFSR (output Q, input C, R, D);
-       `SB_DFF_REG
+module SB_DFFSR (output `SB_DFF_REG, input C, R, D);
        always @(posedge C)
                if (R)
                        Q <= 0;
@@ -154,8 +151,7 @@ module SB_DFFSR (output Q, input C, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFR (output Q, input C, R, D);
-       `SB_DFF_REG
+module SB_DFFR (output `SB_DFF_REG, input C, R, D);
        always @(posedge C, posedge R)
                if (R)
                        Q <= 0;
@@ -163,8 +159,7 @@ module SB_DFFR (output Q, input C, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFSS (output Q, input C, S, D);
-       `SB_DFF_REG
+module SB_DFFSS (output `SB_DFF_REG, input C, S, D);
        always @(posedge C)
                if (S)
                        Q <= 1;
@@ -172,8 +167,7 @@ module SB_DFFSS (output Q, input C, S, D);
                        Q <= D;
 endmodule
 
-module SB_DFFS (output Q, input C, S, D);
-       `SB_DFF_REG
+module SB_DFFS (output `SB_DFF_REG, input C, S, D);
        always @(posedge C, posedge S)
                if (S)
                        Q <= 1;
@@ -181,8 +175,7 @@ module SB_DFFS (output Q, input C, S, D);
                        Q <= D;
 endmodule
 
-module SB_DFFESR (output Q, input C, E, R, D);
-       `SB_DFF_REG
+module SB_DFFESR (output `SB_DFF_REG, input C, E, R, D);
        always @(posedge C)
                if (E) begin
                        if (R)
@@ -192,8 +185,7 @@ module SB_DFFESR (output Q, input C, E, R, D);
                end
 endmodule
 
-module SB_DFFER (output Q, input C, E, R, D);
-       `SB_DFF_REG
+module SB_DFFER (output `SB_DFF_REG, input C, E, R, D);
        always @(posedge C, posedge R)
                if (R)
                        Q <= 0;
@@ -201,8 +193,7 @@ module SB_DFFER (output Q, input C, E, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFESS (output Q, input C, E, S, D);
-       `SB_DFF_REG
+module SB_DFFESS (output `SB_DFF_REG, input C, E, S, D);
        always @(posedge C)
                if (E) begin
                        if (S)
@@ -212,8 +203,7 @@ module SB_DFFESS (output Q, input C, E, S, D);
                end
 endmodule
 
-module SB_DFFES (output Q, input C, E, S, D);
-       `SB_DFF_REG
+module SB_DFFES (output `SB_DFF_REG, input C, E, S, D);
        always @(posedge C, posedge S)
                if (S)
                        Q <= 1;
@@ -223,21 +213,18 @@ endmodule
 
 // Negative Edge SiliconBlue FF Cells
 
-module SB_DFFN (output Q, input C, D);
-       `SB_DFF_REG
+module SB_DFFN (output `SB_DFF_REG, input C, D);
        always @(negedge C)
                Q <= D;
 endmodule
 
-module SB_DFFNE (output Q, input C, E, D);
-       `SB_DFF_REG
+module SB_DFFNE (output `SB_DFF_REG, input C, E, D);
        always @(negedge C)
                if (E)
                        Q <= D;
 endmodule
 
-module SB_DFFNSR (output Q, input C, R, D);
-       `SB_DFF_REG
+module SB_DFFNSR (output `SB_DFF_REG, input C, R, D);
        always @(negedge C)
                if (R)
                        Q <= 0;
@@ -245,8 +232,7 @@ module SB_DFFNSR (output Q, input C, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFNR (output Q, input C, R, D);
-       `SB_DFF_REG
+module SB_DFFNR (output `SB_DFF_REG, input C, R, D);
        always @(negedge C, posedge R)
                if (R)
                        Q <= 0;
@@ -254,8 +240,7 @@ module SB_DFFNR (output Q, input C, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFNSS (output Q, input C, S, D);
-       `SB_DFF_REG
+module SB_DFFNSS (output `SB_DFF_REG, input C, S, D);
        always @(negedge C)
                if (S)
                        Q <= 1;
@@ -263,8 +248,7 @@ module SB_DFFNSS (output Q, input C, S, D);
                        Q <= D;
 endmodule
 
-module SB_DFFNS (output Q, input C, S, D);
-       `SB_DFF_REG
+module SB_DFFNS (output `SB_DFF_REG, input C, S, D);
        always @(negedge C, posedge S)
                if (S)
                        Q <= 1;
@@ -272,8 +256,7 @@ module SB_DFFNS (output Q, input C, S, D);
                        Q <= D;
 endmodule
 
-module SB_DFFNESR (output Q, input C, E, R, D);
-       `SB_DFF_REG
+module SB_DFFNESR (output `SB_DFF_REG, input C, E, R, D);
        always @(negedge C)
                if (E) begin
                        if (R)
@@ -283,8 +266,7 @@ module SB_DFFNESR (output Q, input C, E, R, D);
                end
 endmodule
 
-module SB_DFFNER (output Q, input C, E, R, D);
-       `SB_DFF_REG
+module SB_DFFNER (output `SB_DFF_REG, input C, E, R, D);
        always @(negedge C, posedge R)
                if (R)
                        Q <= 0;
@@ -292,8 +274,7 @@ module SB_DFFNER (output Q, input C, E, R, D);
                        Q <= D;
 endmodule
 
-module SB_DFFNESS (output Q, input C, E, S, D);
-       `SB_DFF_REG
+module SB_DFFNESS (output `SB_DFF_REG, input C, E, S, D);
        always @(negedge C)
                if (E) begin
                        if (S)
@@ -303,8 +284,7 @@ module SB_DFFNESS (output Q, input C, E, S, D);
                end
 endmodule
 
-module SB_DFFNES (output Q, input C, E, S, D);
-       `SB_DFF_REG
+module SB_DFFNES (output `SB_DFF_REG, input C, E, S, D);
        always @(negedge C, posedge S)
                if (S)
                        Q <= 1;
@@ -677,7 +657,7 @@ module ICESTORM_LC (
        parameter [0:0] SET_NORESET  = 0;
        parameter [0:0] ASYNC_SR     = 0;
 
-       wire COUT = CARRY_ENABLE ? (I1 && I2) || ((I1 || I2) && CIN) : 1'bx;
+       assign COUT = CARRY_ENABLE ? (I1 && I2) || ((I1 || I2) && CIN) : 1'bx;
 
        wire [7:0] lut_s3 = I3 ? LUT_INIT[15:8] : LUT_INIT[7:0];
        wire [3:0] lut_s2 = I2 ?   lut_s3[ 7:4] :   lut_s3[3:0];