?? 74161.tdf
字號:
TITLE "Top-level file for the 74161 macrofunction. Chooses a device-family optimized implementation.";
FUNCTION p74161 (clk, ldn, clrn, enp, ent, d, c, b, a)
RETURNS (qd, qc, qb, qa, rco);
FUNCTION f74161 (clk, ldn, clrn, enp, ent, d, c, b, a)
RETURNS (qd, qc, qb, qa, rco);
PARAMETERS
(
DEVICE_FAMILY
);
INCLUDE "aglobal.inc";
SUBDESIGN 74161
(
clk : INPUT = GND;
ldn : INPUT = VCC;
clrn : INPUT = VCC;
enp : INPUT = VCC;
ent : INPUT = VCC;
d : INPUT = GND;
c : INPUT = GND;
b : INPUT = GND;
a : INPUT = GND;
qd : OUTPUT;
qc : OUTPUT;
qb : OUTPUT;
qa : OUTPUT;
rco : OUTPUT;
)
VARIABLE
IF (FAMILY_FLEX() == 1) GENERATE
sub : f74161;
ELSE GENERATE
sub : p74161;
END GENERATE;
BEGIN
IF (USED(clk)) GENERATE
sub.clk = clk;
END GENERATE;
IF (USED(ldn)) GENERATE
sub.ldn = ldn;
END GENERATE;
IF (USED(clrn)) GENERATE
sub.clrn = clrn;
END GENERATE;
IF (USED(enp)) GENERATE
sub.enp = enp;
END GENERATE;
IF (USED(ent)) GENERATE
sub.ent = ent;
END GENERATE;
IF (USED(d)) GENERATE
sub.d = d;
END GENERATE;
IF (USED(c)) GENERATE
sub.c = c;
END GENERATE;
IF (USED(b)) GENERATE
sub.b = b;
END GENERATE;
IF (USED(a)) GENERATE
sub.a = a;
END GENERATE;
qd = sub.qd;
qc = sub.qc;
qb = sub.qb;
qa = sub.qa;
rco = sub.rco;
END;
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