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iCE40 DFF sim models: init Q regs to 0

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Clifford Wolf 2015-07-20 13:05:18 +02:00
parent ad919ae4e3
commit c6ca4780e2
1 changed files with 43 additions and 20 deletions
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63
techlibs/ice40/cells_sim.v
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@ -1,4 +1,7 @@
`define SB_DFF_REG reg Q = 0;
// `define SB_DFF_REG reg Q;
// SiliconBlue IO Cells // SiliconBlue IO Cells
module SB_IO ( module SB_IO (
@ -123,18 +126,21 @@ endmodule
// Positive Edge SiliconBlue FF Cells // Positive Edge SiliconBlue FF Cells
module SB_DFF (output reg Q, input C, D); module SB_DFF (output Q, input C, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFE (output reg Q, input C, E, D); module SB_DFFE (output Q, input C, E, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
if (E) if (E)
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFSR (output reg Q, input C, R, D); module SB_DFFSR (output Q, input C, R, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
if (R) if (R)
Q <= 0; Q <= 0;
@ -142,7 +148,8 @@ module SB_DFFSR (output reg Q, input C, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFR (output reg Q, input C, R, D); module SB_DFFR (output Q, input C, R, D);
`SB_DFF_REG
always @(posedge C, posedge R) always @(posedge C, posedge R)
if (R) if (R)
Q <= 0; Q <= 0;
@ -150,7 +157,8 @@ module SB_DFFR (output reg Q, input C, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFSS (output reg Q, input C, S, D); module SB_DFFSS (output Q, input C, S, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
if (S) if (S)
Q <= 1; Q <= 1;
@ -158,7 +166,8 @@ module SB_DFFSS (output reg Q, input C, S, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFS (output reg Q, input C, S, D); module SB_DFFS (output Q, input C, S, D);
`SB_DFF_REG
always @(posedge C, posedge S) always @(posedge C, posedge S)
if (S) if (S)
Q <= 1; Q <= 1;
@ -166,7 +175,8 @@ module SB_DFFS (output reg Q, input C, S, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFESR (output reg Q, input C, E, R, D); module SB_DFFESR (output Q, input C, E, R, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
if (E) begin if (E) begin
if (R) if (R)
@ -176,7 +186,8 @@ module SB_DFFESR (output reg Q, input C, E, R, D);
end end
endmodule endmodule
module SB_DFFER (output reg Q, input C, E, R, D); module SB_DFFER (output Q, input C, E, R, D);
`SB_DFF_REG
always @(posedge C, posedge R) always @(posedge C, posedge R)
if (R) if (R)
Q <= 0; Q <= 0;
@ -184,7 +195,8 @@ module SB_DFFER (output reg Q, input C, E, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFESS (output reg Q, input C, E, S, D); module SB_DFFESS (output Q, input C, E, S, D);
`SB_DFF_REG
always @(posedge C) always @(posedge C)
if (E) begin if (E) begin
if (S) if (S)
@ -194,7 +206,8 @@ module SB_DFFESS (output reg Q, input C, E, S, D);
end end
endmodule endmodule
module SB_DFFES (output reg Q, input C, E, S, D); module SB_DFFES (output Q, input C, E, S, D);
`SB_DFF_REG
always @(posedge C, posedge S) always @(posedge C, posedge S)
if (S) if (S)
Q <= 1; Q <= 1;
@ -204,18 +217,21 @@ endmodule
// Negative Edge SiliconBlue FF Cells // Negative Edge SiliconBlue FF Cells
module SB_DFFN (output reg Q, input C, D); module SB_DFFN (output Q, input C, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNE (output reg Q, input C, E, D); module SB_DFFNE (output Q, input C, E, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
if (E) if (E)
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNSR (output reg Q, input C, R, D); module SB_DFFNSR (output Q, input C, R, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
if (R) if (R)
Q <= 0; Q <= 0;
@ -223,7 +239,8 @@ module SB_DFFNSR (output reg Q, input C, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNR (output reg Q, input C, R, D); module SB_DFFNR (output Q, input C, R, D);
`SB_DFF_REG
always @(negedge C, posedge R) always @(negedge C, posedge R)
if (R) if (R)
Q <= 0; Q <= 0;
@ -231,7 +248,8 @@ module SB_DFFNR (output reg Q, input C, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNSS (output reg Q, input C, S, D); module SB_DFFNSS (output Q, input C, S, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
if (S) if (S)
Q <= 1; Q <= 1;
@ -239,7 +257,8 @@ module SB_DFFNSS (output reg Q, input C, S, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNS (output reg Q, input C, S, D); module SB_DFFNS (output Q, input C, S, D);
`SB_DFF_REG
always @(negedge C, posedge S) always @(negedge C, posedge S)
if (S) if (S)
Q <= 1; Q <= 1;
@ -247,7 +266,8 @@ module SB_DFFNS (output reg Q, input C, S, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNESR (output reg Q, input C, E, R, D); module SB_DFFNESR (output Q, input C, E, R, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
if (E) begin if (E) begin
if (R) if (R)
@ -257,7 +277,8 @@ module SB_DFFNESR (output reg Q, input C, E, R, D);
end end
endmodule endmodule
module SB_DFFNER (output reg Q, input C, E, R, D); module SB_DFFNER (output Q, input C, E, R, D);
`SB_DFF_REG
always @(negedge C, posedge R) always @(negedge C, posedge R)
if (R) if (R)
Q <= 0; Q <= 0;
@ -265,7 +286,8 @@ module SB_DFFNER (output reg Q, input C, E, R, D);
Q <= D; Q <= D;
endmodule endmodule
module SB_DFFNESS (output reg Q, input C, E, S, D); module SB_DFFNESS (output Q, input C, E, S, D);
`SB_DFF_REG
always @(negedge C) always @(negedge C)
if (E) begin if (E) begin
if (S) if (S)
@ -275,7 +297,8 @@ module SB_DFFNESS (output reg Q, input C, E, S, D);
end end
endmodule endmodule
module SB_DFFNES (output reg Q, input C, E, S, D); module SB_DFFNES (output Q, input C, E, S, D);
`SB_DFF_REG
always @(negedge C, posedge S) always @(negedge C, posedge S)
if (S) if (S)
Q <= 1; Q <= 1;