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module shift_reg(clk,clken,data_in,data_out);2 z! R+ n1 B) W" l( c* V
input clk;
! i4 `8 }2 b( binput clken;
0 q- g3 }+ u! }$ Z- _) binput [7:0] data_in;* ~* }8 U' k* p/ R8 j
output [7:0] data_out;# K1 [6 P& N0 l6 {2 z7 W
9 }3 l! y3 j/ f- d+ s8 X* L0 e: J/*always @(posedge clk)
1 Y, G. ?8 ^3 F% `2 q8 }! ubegin
' L- G, a: b5 A. R, }8 w data_cnt=data_cnt+8'd1;) u i# n, ~- T5 _
end*/
1 j! v; R' [$ s3 H4 z# b 3 u. _* r+ A6 V! L$ D- |
4 l4 ~& ]4 |5 F q3 v2 a# D* r- d
shift1 u1(- `4 r0 N7 O V9 j
.clock(clk),
/ T' H5 h0 z1 s; ^ .clken(clken),
6 E; o0 M7 p4 e s8 y7 \ .shiftin(data_cnt),- y# t/ p/ e3 P
.shiftout(data_out));+ Q0 O1 U6 F% [9 r
endmodule
% I7 u' z+ d* ]' g* U) F, H
! c" U% L& H8 Z& P测试程序:
. r2 A" D3 `9 K! `" hinitial
% H5 \# S; @3 Ybegin ! ?/ J( ~% O' b/ T) J a
clk=0;: n1 o8 P' |) D* {
data_in=8'b0; 9 d& b3 u, w, `
clken=1'b0; : f( a$ \, o& m8 K ]
end
% w2 }* q8 L3 c" T! @6 r1 v ; E* L2 s! m6 E9 _$ p( y
always #10 clk=~clk;
3 I1 n1 u' H' o* M3 m0 B! k+ Oinitial
8 I! t2 s* {" W, d2 @ Ebegin ^: R2 q3 O- k+ w* ]# a& `+ Q/ F9 o
#100 clken=1'b1;
( g4 U7 E( Y% N* B2 d7 C; ? #200 clken=1'b0;
! v& V+ x0 }0 F, {, _ #100 clken=1'b1;( Y6 c. ^9 [/ m, V, y# O
#200 clken=1'b0;9 o4 y$ J2 ^3 S+ Q! |: h, {3 Z9 D9 S
#100 clken=1'b1;
d( Y( s5 Y1 o #200 clken=1'b0; q' l: f' U F1 {9 E2 W/ U
#100 clken=1'b1;
* ]9 c. Y/ V9 V( E0 i1 k #200 clken=1'b0;
) {0 j M% d; F' y# r8 E( v #100 clken=1'b1;
% t" |7 n+ F- m. ] #200 clken=1'b0; % |; I6 g0 d8 J
#100 clken=1'b1;
2 T B& e+ b& T4 \ end
7 U3 R/ p( I7 K$ a( y1 m7 ralways @(posedge clk)
: g9 c5 I/ L3 F, Fbegin
9 M4 w& R* e5 w$ i/ J% d( v! f if(clken)
" C, a9 G+ S' g) A* o data_in=data_in+1'b1; - Q. D# T+ C$ ?# @ N
end
; Y# T7 E) J# ~8 zendmodule
7 j- m: B- J9 z }+ w% s1 H+ V. r- [) l
modelsim-ase编译正确,仿真时出错
) p% a3 H6 w0 o+ `. Q# H5 ~# ** 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.
' N+ v& D0 O5 ~& d# Region: /shift_reg_vlg_tst/i1/u1
/ }( k& m. y4 { a7 g# Error loading design
6 @( I$ ^9 b6 g c8 R& h# P- k M7 ]6 p3 U. v R
& ]* ^$ P8 j$ Z) V8 N- o" K5 u h7 F有哪位大神做过这个库函数的仿真,求解答!!! |
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