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machxo2: Initial support for carry chains (CCU2D)

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Miodrag Milanovic 2023-03-31 13:36:36 +02:00 • committed by myrtle
parent 53c0a6b780
commit 6e12da3956
4 changed files with 127 additions and 5 deletions
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20
techlibs/machxo2/cells_sim.v
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@ -255,6 +255,26 @@ module DPR16X4C (
assign DO = ram[RAD];
endmodule
// ---------------------------------------
(* blackbox *)
module CCU2D (
CIN,
A0, B0, C0, D0,
A1, B1, C1, D1,
S0, S1, COUT
);
input CIN;
input A0, B0, C0, D0;
input A1, B1, C1, D1;
output S0, S1, COUT;
parameter [15:0] INIT0 = 16'h0000;
parameter [15:0] INIT1 = 16'h0000;
parameter INJECT1_0 = "YES";
parameter INJECT1_1 = "YES";
endmodule
(* blackbox *)
module DP8KC(
input DIA8, DIA7, DIA6, DIA5, DIA4, DIA3, DIA2, DIA1, DIA0,