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module shift_reg(clk,clken,data_in,data_out);
: ^, u+ U8 G K' xinput clk;5 B' z9 H3 f- q- a1 O3 D; q* S
input clken;# ^) g1 g% t0 i
input [7:0] data_in;
; @- R1 i9 @& ^9 }output [7:0] data_out;
9 S5 p4 I+ C! f
2 V2 p' P& }8 m D3 P/*always @(posedge clk)
" k5 G% W9 d' b' Z/ _7 vbegin
' n% x/ n+ G7 a7 q+ Y( k data_cnt=data_cnt+8'd1;
6 Q4 l$ k* H) S/ S end*/( o! p, ]( t% k& H/ U# O$ C
0 e2 e/ E: b$ e
9 Q8 o+ V) b' `7 G( U9 ~
shift1 u1(- p! b) Y, E& k* A
.clock(clk),
8 q$ J ~2 {+ A# z: i& A .clken(clken),
4 L, o4 }4 U6 i5 S0 m6 k5 t .shiftin(data_cnt),, V- j6 u' H" n' ~. s* s
.shiftout(data_out));- J4 r0 A+ D' t* W! h9 Q
endmodule+ o" |: n0 Q# i" O
/ B" b) z/ b9 z
测试程序:
% ?7 F+ |& R0 v: P: Qinitial - J: G; n) Z5 {# ~" D4 c- P
begin
" v, O2 z: ~0 L1 ]. ]9 O9 yclk=0;, N/ o- E" B/ Y8 G0 r. P
data_in=8'b0;
3 V ~6 o# d7 D8 r2 [4 t7 i5 Uclken=1'b0;
# G. F# f1 p; Zend
9 ?' H/ p2 @3 v' E0 x * |, H* l0 ~7 B3 F9 T$ i& c5 x. Y! t
always #10 clk=~clk;
( ~( G5 K7 h7 d! yinitial$ f! [, V& \% k2 w a( J
begin
% w6 w: B8 o0 h' @: f #100 clken=1'b1;
8 c5 a- l3 o1 t' E; f, A2 X #200 clken=1'b0;
: Q- u* F% r9 b, t8 x9 p( Y #100 clken=1'b1;
K8 g/ k1 G* }1 c #200 clken=1'b0;5 `# J7 [% v, E% `+ ~# j
#100 clken=1'b1;
; o) b- H! l, w( W6 N( R #200 clken=1'b0;1 T; a0 B' N2 S' n2 d
#100 clken=1'b1;
; G" M' @$ P* E) p2 e- g #200 clken=1'b0;
1 N! ~+ i( t& V1 a5 o* _ #100 clken=1'b1;& A# e# U% w7 F1 ?0 p' Y
#200 clken=1'b0;
9 X/ }% B- K `" W- E* ?; h #100 clken=1'b1;. f( u9 B3 h: C# n& ^
end
+ s1 J( G2 w# Z# Valways @(posedge clk) , G4 E) V& z! F9 n
begin. @: n3 V$ p* C/ Q
if(clken)2 X" ^. Q- ]% D! Y. [: m4 z
data_in=data_in+1'b1;
0 T3 O# V/ d& i8 ^) _end
1 n& K5 Y3 u8 P/ b% qendmodule
" g" J( D$ h6 e- H
% D" J) Z; ? u+ i% T9 W# H) rmodelsim-ase编译正确,仿真时出错) K3 u& q% ~/ n! }3 h2 g8 H* o
# ** Error: (vsim-10000) F:/Quartus11.0_exercise/quartus_exercise/shift_reg_ram_based/shift1.v(69): Unresolved defparam reference to 'intended_device_family' in ALTSHIFT_TAPS_component.intended_device_family.. t/ Z8 }% |+ N/ J
# Region: /shift_reg_vlg_tst/i1/u1: E! y2 N8 `# g5 U
# Error loading design
6 d! n D4 r# W. i! b7 q& \( q3 J% e# r' ?- F& Q0 f
) @. \0 P$ }$ L7 x9 F# O O有哪位大神做过这个库函数的仿真,求解答!!! |
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