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module shift_reg(clk,clken,data_in,data_out);8 c9 t0 f0 y+ {7 |: E6 c
input clk;9 G6 \ N4 |: z# n
input clken;. D" `( u+ K5 |2 r( x2 D7 B
input [7:0] data_in;
7 c, b h6 G# t+ i3 moutput [7:0] data_out;
]$ }9 \7 H+ D3 H: z* O3 o, I. y: p O
/*always @(posedge clk)6 _+ }3 c( q- `5 h& n" \: a: W' [
begin
) r- X. I4 j) X. q$ R data_cnt=data_cnt+8'd1;& a% A# \1 s1 d. O# K. L4 Z
end*/$ U) s/ H: ~- b( Z
% K% f! q! A4 W: _0 z" u
2 l' u, ~ [' Dshift1 u1(: [8 N! G2 E; B0 K; D5 M
.clock(clk),# W3 B0 ~# Y$ y/ J( C
.clken(clken),
1 Z6 i& [) ~9 k' e; a& Z .shiftin(data_cnt)," @% I7 \, M: k! X) j2 t- X! B
.shiftout(data_out));
# g4 `, R9 h% S9 i; i, {endmodule
" C, c8 j* m& f8 f; t4 y8 D
8 F* b2 y& U$ C/ C) O! A测试程序:
/ ` L; S4 ` G- finitial
E$ w$ d2 W& u Xbegin
5 q# j" T+ y# B/ u+ Eclk=0;& n' ~& A9 z- H6 X
data_in=8'b0;
1 a9 F: z5 A- Hclken=1'b0;
4 v" N% s3 U) Q/ t% X( e1 b8 Jend ) r3 n$ i& c( p7 L' A
" m1 ]) b& |5 malways #10 clk=~clk;
3 i0 }* _. D( k- ^3 Finitial' O- l4 L t9 h% |7 Y% K$ u& ?; l
begin
3 ?$ J( _) L8 ` #100 clken=1'b1;8 U" R0 {: o* ]7 |1 H: {; @
#200 clken=1'b0;1 @$ z! Z0 ]9 {: N1 q/ s+ w3 f
#100 clken=1'b1;
+ ?. j# T) \4 I4 T! M( } #200 clken=1'b0;2 u$ p0 P! B# i6 {' ]
#100 clken=1'b1;
: U$ F8 a$ J" o# q* T4 ~# z% y #200 clken=1'b0;3 ?9 |) ?! g5 O' f6 u: Z# Q
#100 clken=1'b1;
9 t8 b: V& m; O0 p# |( s2 ?6 H #200 clken=1'b0;
: D! d+ K" K! { #100 clken=1'b1; [6 l9 D$ p4 ]/ i: c; S& N
#200 clken=1'b0; 5 k. ~4 K5 ]2 O
#100 clken=1'b1;
9 z7 q- r8 q) D1 k end : }/ A' A* r& Q0 D% m
always @(posedge clk) ; S* L( T6 b; `9 p3 ]& M: S: v
begin+ t7 |* l5 T3 N x
if(clken)* A2 d2 n9 s% a: w3 y
data_in=data_in+1'b1; ! b* |/ N4 S! e" S
end
7 `: ~' m# Y% W) R( \endmodule
" Y( Y8 S1 _ o6 t& q |5 v4 S# X4 x) R/ M( Z
modelsim-ase编译正确,仿真时出错
! P7 A/ f4 e' d% R$ u# ** 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.$ m9 o6 r& V6 s+ |' J
# Region: /shift_reg_vlg_tst/i1/u1' E8 S3 K0 u, F: z
# Error loading design, p7 a0 m B0 O( C
8 m8 K4 _ G0 Z& l2 c
. W2 u/ {- l' M+ m( v有哪位大神做过这个库函数的仿真,求解答!!! |
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