📄 cyclone_atoms.v
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// Copyright (C) 1988-2004 Altera Corporation
// Any megafunction design, and related netlist (encrypted or decrypted),
// support information, device programming or simulation file, and any other
// associated documentation or information provided by Altera or a partner
// under Altera's Megafunction Partnership Program may be used only
// to program PLD devices (but not masked PLD devices) from Altera. Any
// other use of such megafunction design, netlist, support information,
// device programming or simulation file, or any other related documentation
// or information is prohibited for any other purpose, including, but not
// limited to modification, reverse engineering, de-compiling, or use with
// any other silicon devices, unless such use is explicitly licensed under
// a separate agreement with Altera or a megafunction partner. Title to the
// intellectual property, including patents, copyrights, trademarks, trade
// secrets, or maskworks, embodied in any such megafunction design, netlist,
// support information, device programming or simulation file, or any other
// related documentation or information provided by Altera or a megafunction
// partner, remains with Altera, the megafunction partner, or their respective
// licensors. No other licenses, including any licenses needed under any third
// party's intellectual property, are provided herein.
// Quartus II 4.0 Build 190 1/28/2004
// ********** PRIMITIVE DEFINITIONS **********
`timescale 1 ps/1 ps
// ***** DFFE
primitive PRIM_DFFE (Q, ENA, D, CLK, CLRN, PRN, notifier);
input D;
input CLRN;
input PRN;
input CLK;
input ENA;
input notifier;
output Q; reg Q;
initial Q = 1'b0;
table
// ENA D CLK CLRN PRN notifier : Qt : Qt+1
(??) ? ? 1 1 ? : ? : -; // pessimism
x ? ? 1 1 ? : ? : -; // pessimism
1 1 (01) 1 1 ? : ? : 1; // clocked data
1 1 (01) 1 x ? : ? : 1; // pessimism
1 1 ? 1 x ? : 1 : 1; // pessimism
1 0 0 1 x ? : 1 : 1; // pessimism
1 0 x 1 (?x) ? : 1 : 1; // pessimism
1 0 1 1 (?x) ? : 1 : 1; // pessimism
1 x 0 1 x ? : 1 : 1; // pessimism
1 x x 1 (?x) ? : 1 : 1; // pessimism
1 x 1 1 (?x) ? : 1 : 1; // pessimism
1 0 (01) 1 1 ? : ? : 0; // clocked data
1 0 (01) x 1 ? : ? : 0; // pessimism
1 0 ? x 1 ? : 0 : 0; // pessimism
0 ? ? x 1 ? : ? : -;
1 1 0 x 1 ? : 0 : 0; // pessimism
1 1 x (?x) 1 ? : 0 : 0; // pessimism
1 1 1 (?x) 1 ? : 0 : 0; // pessimism
1 x 0 x 1 ? : 0 : 0; // pessimism
1 x x (?x) 1 ? : 0 : 0; // pessimism
1 x 1 (?x) 1 ? : 0 : 0; // pessimism
// 1 1 (x1) 1 1 ? : 1 : 1; // reducing pessimism
// 1 0 (x1) 1 1 ? : 0 : 0;
1 ? (x1) 1 1 ? : ? : -; // spr 80166-ignore
// x->1 edge
1 1 (0x) 1 1 ? : 1 : 1;
1 0 (0x) 1 1 ? : 0 : 0;
? ? ? 0 1 ? : ? : 0; // asynch clear
? ? ? 1 0 ? : ? : 1; // asynch set
1 ? (?0) 1 1 ? : ? : -; // ignore falling clock
1 ? (1x) 1 1 ? : ? : -; // ignore falling clock
1 * ? ? ? ? : ? : -; // ignore data edges
1 ? ? (?1) ? ? : ? : -; // ignore edges on
1 ? ? ? (?1) ? : ? : -; // set and clear
0 ? ? 1 1 ? : ? : -; // set and clear
? ? ? 1 1 * : ? : x; // spr 36954 - at any
// notifier event,
// output 'x'
endtable
endprimitive
module dffe ( Q, CLK, ENA, D, CLRN, PRN );
input D;
input CLK;
input CLRN;
input PRN;
input ENA;
output Q;
buf (D_ipd, D);
buf (ENA_ipd, ENA);
buf (CLK_ipd, CLK);
buf (PRN_ipd, PRN);
buf (CLRN_ipd, CLRN);
wire legal;
reg viol_notifier;
PRIM_DFFE ( Q, ENA_ipd, D_ipd, CLK_ipd, CLRN_ipd, PRN_ipd, viol_notifier );
and(legal, ENA_ipd, CLRN_ipd, PRN_ipd);
specify
specparam TREG = 0;
specparam TREN = 0;
specparam TRSU = 0;
specparam TRH = 0;
specparam TRPR = 0;
specparam TRCL = 0;
$setup ( D, posedge CLK &&& legal, TRSU, viol_notifier ) ;
$hold ( posedge CLK &&& legal, D, TRH, viol_notifier ) ;
$setup ( ENA, posedge CLK &&& legal, TREN, viol_notifier ) ;
$hold ( posedge CLK &&& legal, ENA, 0, viol_notifier ) ;
( negedge CLRN => (Q +: 1'b0)) = ( TRCL, TRCL) ;
( negedge PRN => (Q +: 1'b1)) = ( TRPR, TRPR) ;
( posedge CLK => (Q +: D)) = ( TREG, TREG) ;
endspecify
endmodule
// ***** LATCH
module latch(D, ENA, PRE, CLR, Q);
input D;
input ENA, PRE, CLR;
output Q;
reg q_out;
specify
$setup (D, posedge ENA, 0) ;
$hold (negedge ENA, D, 0) ;
(D => Q) = (0, 0);
(posedge ENA => (Q +: q_out)) = (0, 0);
(negedge PRE => (Q +: q_out)) = (0, 0);
(negedge CLR => (Q +: q_out)) = (0, 0);
endspecify
buf (D_in, D);
buf (ENA_in, ENA);
buf (PRE_in, PRE);
buf (CLR_in, CLR);
initial
begin
q_out = 1'b0;
end
always @(D_in or ENA_in or PRE_in or CLR_in)
begin
if (PRE_in == 1'b0)
begin
// latch being preset, preset is active low
q_out = 1'b1;
end
else if (CLR_in == 1'b0)
begin
// latch being cleared, clear is active low
q_out = 1'b0;
end
else if (ENA_in == 1'b1)
begin
// latch is transparent
q_out = D_in;
end
end
and (Q, q_out, 1'b1);
endmodule
// ***** MUX21
module mux21 (MO, A, B, S);
input A, B, S;
output MO;
buf(A_in, A);
buf(B_in, B);
buf(S_in, S);
wire tmp_MO;
specify
(A => MO) = (0, 0);
(B => MO) = (0, 0);
(S => MO) = (0, 0);
endspecify
assign tmp_MO = (S_in == 1) ? B_in : A_in;
buf (MO, tmp_MO);
endmodule
// ***** MUX41
module mux41 (MO, IN0, IN1, IN2, IN3, S);
input IN0;
input IN1;
input IN2;
input IN3;
input [1:0] S;
output MO;
buf(IN0_in, IN0);
buf(IN1_in, IN1);
buf(IN2_in, IN2);
buf(IN3_in, IN3);
buf(S1_in, S[1]);
buf(S0_in, S[0]);
wire tmp_MO;
specify
(IN0 => MO) = (0, 0);
(IN1 => MO) = (0, 0);
(IN2 => MO) = (0, 0);
(IN3 => MO) = (0, 0);
(S[1] => MO) = (0, 0);
(S[0] => MO) = (0, 0);
endspecify
assign tmp_MO = S1_in ? (S0_in ? IN3_in : IN2_in) : (S0_in ? IN1_in : IN0_in);
buf (MO, tmp_MO);
endmodule
// ***** AND1
module and1 (Y, IN1);
input IN1;
output Y;
specify
(IN1 => Y) = (0, 0);
endspecify
buf (Y, IN1);
endmodule
// ***** AND16
module and16 (Y, IN1);
input [15:0] IN1;
output [15:0] Y;
specify
(IN1 => Y) = (0, 0);
endspecify
buf (Y[0], IN1[0]);
buf (Y[1], IN1[1]);
buf (Y[2], IN1[2]);
buf (Y[3], IN1[3]);
buf (Y[4], IN1[4]);
buf (Y[5], IN1[5]);
buf (Y[6], IN1[6]);
buf (Y[7], IN1[7]);
buf (Y[8], IN1[8]);
buf (Y[9], IN1[9]);
buf (Y[10], IN1[10]);
buf (Y[11], IN1[11]);
buf (Y[12], IN1[12]);
buf (Y[13], IN1[13]);
buf (Y[14], IN1[14]);
buf (Y[15], IN1[15]);
endmodule
// ***** BMUX21
module bmux21 (MO, A, B, S);
input [15:0] A, B;
input S;
output [15:0] MO;
assign MO = (S == 1) ? B : A;
endmodule
// ***** B17MUX21
module b17mux21 (MO, A, B, S);
input [16:0] A, B;
input S;
output [16:0] MO;
assign MO = (S == 1) ? B : A;
endmodule
// ***** NMUX21
module nmux21 (MO, A, B, S);
input A, B, S;
output MO;
assign MO = (S == 1) ? ~B : ~A;
endmodule
// ***** B5MUX21
module b5mux21 (MO, A, B, S);
input [4:0] A, B;
input S;
output [4:0] MO;
assign MO = (S == 1) ? B : A;
endmodule
// ********** END PRIMITIVE DEFINITIONS **********
///////////////////////////////////////////////////////////////////////////////
//
// CYCLONE LCELL ATOM
//
// Supports lut_mask, does not support equations. Support normal, arithmetic,
// updown counter and iclrable counter mode. Parameter output_mode is
// informational only and has no simulation function. No checking is done
// for validation of parameters passed from top level. Input default values
// are implemented using tri1 and tri0 net.
//
///////////////////////////////////////////////////////////////////////////////
`timescale 1 ps/1 ps
module cyclone_asynch_lcell (
dataa,
datab,
datac,
datad,
cin,
cin0,
cin1,
inverta,
qfbkin,
regin,
combout,
cout,
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