diff options
Diffstat (limited to 'techlibs/coolrunner2')
-rw-r--r-- | techlibs/coolrunner2/cells_sim.v | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/techlibs/coolrunner2/cells_sim.v b/techlibs/coolrunner2/cells_sim.v index e08ee5f9b..d8dca1922 100644 --- a/techlibs/coolrunner2/cells_sim.v +++ b/techlibs/coolrunner2/cells_sim.v @@ -244,3 +244,63 @@ module FTDCP (C, PRE, CLR, T, Q); assign Q = Q_; endmodule + +module FDCPE (C, PRE, CLR, D, Q, CE); + parameter INIT = 0; + + input C, PRE, CLR, D, CE; + output reg Q; + + initial begin + Q <= INIT; + end + + always @(posedge C, posedge PRE, posedge CLR) begin + if (CLR == 1) + Q <= 0; + else if (PRE == 1) + Q <= 1; + else if (CE == 1) + Q <= D; + end +endmodule + +module FDCPE_N (C, PRE, CLR, D, Q, CE); + parameter INIT = 0; + + input C, PRE, CLR, D, CE; + output reg Q; + + initial begin + Q <= INIT; + end + + always @(negedge C, posedge PRE, posedge CLR) begin + if (CLR == 1) + Q <= 0; + else if (PRE == 1) + Q <= 1; + else if (CE == 1) + Q <= D; + end +endmodule + +module FDDCPE (C, PRE, CLR, D, Q, CE); + parameter INIT = 0; + + input C, PRE, CLR, D, CE; + output reg Q; + + initial begin + Q <= INIT; + end + + always @(posedge C, negedge C, posedge PRE, posedge CLR) begin + if (CLR == 1) + Q <= 0; + else if (PRE == 1) + Q <= 1; + else if (CE == 1) + Q <= D; + end +endmodule |