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gowin: add support for Double Data Rate primitives

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Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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YRabbit 2022-03-15 07:41:30 +10:00 • committed by Marcelina Kościelnicka
parent 25d6fdfea7
commit 19b7633aca
1 changed files with 25 additions and 0 deletions
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25
techlibs/gowin/cells_sim.v
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@ -590,6 +590,31 @@ module TLVDS_OBUF (I, O, OB);
assign OB = ~I; assign OB = ~I;
endmodule endmodule
(* blackbox *)
module ODDR(D0, D1, TX, CLK, Q0, Q1);
input D0;
input D1;
input TX;
input CLK;
output Q0;
output Q1;
parameter TXCLK_POL = 0;
parameter INIT = 0;
endmodule
(* blackbox *)
module ODDRC(D0, D1, CLEAR, TX, CLK, Q0, Q1);
input D0;
input D1;
input CLEAR;
input TX;
input CLK;
output Q0;
output Q1;
parameter TXCLK_POL = 0;
parameter INIT = 0;
endmodule
module GSR (input GSRI); module GSR (input GSRI);
wire GSRO = GSRI; wire GSRO = GSRI;
endmodule endmodule