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module shift_reg(clk,clken,data_in,data_out);% T. ?$ V; T$ ^/ _
input clk;
" ]" p- n: P7 f: Hinput clken;
$ G" I' S3 j; M! T4 d: Winput [7:0] data_in;
* d+ D% W7 T' D4 Q7 @: T: l, boutput [7:0] data_out;
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2 f3 b/ B& |8 ^- y) V5 e/*always @(posedge clk)# X! n; g- o6 s5 B
begin
' }5 x: [ a1 ]0 m data_cnt=data_cnt+8'd1;
, M* y2 q* |, L- J' i3 e: G end*/ A9 y% o3 I2 ?& s. D5 A
7 }6 c' z0 h1 P7 x1 g! K; Q: Z4 F$ {/ j5 A
shift1 u1(+ K4 N+ ?" B) O4 Q, y9 j7 @
.clock(clk),: x! b5 K% e6 \% J+ U1 B- L9 ] i3 G
.clken(clken),
2 _7 B+ ^ z* {2 d .shiftin(data_cnt),6 E1 [2 q3 K$ l! r
.shiftout(data_out));
9 H. j2 C# v, R! L7 X! Z% Iendmodule2 }; i* [: @6 R2 L# z
% x" Q* l5 K& L: g
测试程序:
+ ^$ j# g% m: _6 `( w# E* ?6 G9 minitial
+ o# O/ x( v" j$ D+ W4 K# Kbegin 0 Y1 b' z: w: T6 l( l" V6 y: M
clk=0;
0 J2 c7 \: @8 t2 Mdata_in=8'b0;
: s0 u: W k3 Z6 `clken=1'b0;
2 z* \, P m0 Eend h; z2 G7 b2 m* E5 R; @( t: E
6 i/ `' K) _3 | G6 ~/ a. n
always #10 clk=~clk;
; M2 E# B; q% Z+ K' P" rinitial/ t6 z; `9 L. e/ v0 F- F
begin
" F/ Q, B" }9 o p/ H2 T: ] #100 clken=1'b1;0 a9 Z; S5 l6 K3 n
#200 clken=1'b0;
+ c( [/ X& `; o2 D8 n #100 clken=1'b1;
" E& @- ` T4 L" N #200 clken=1'b0;
0 u6 g# l+ X9 p8 J- ~) b: v #100 clken=1'b1;
5 T6 a x$ n0 X: J: J #200 clken=1'b0;( G4 Y- D' O) P4 ]6 J. E! x5 v
#100 clken=1'b1;9 o3 M* _# x' j ]( @' n% K3 O
#200 clken=1'b0;. S, p: T, V% A: _
#100 clken=1'b1;( K/ Z, L3 x0 H) j/ o( v0 V f
#200 clken=1'b0;
& N% X1 w' N9 a! m0 O) u% m #100 clken=1'b1;
6 b: t4 l1 T% P end & M' R9 r c# H6 i6 v) T' ~3 ]
always @(posedge clk)
) S) F* E0 |9 s- ^) {begin# |/ ?+ ?, s4 O, b
if(clken)
. S6 B1 W' Q; r7 p data_in=data_in+1'b1;
: G) A! U2 B+ m" R8 p4 n9 Iend : L$ T0 q; h) T+ o# k% Z+ O9 I
endmodule
+ B4 l* Q9 f7 H9 l2 g' ?% u0 X0 V8 s8 r
modelsim-ase编译正确,仿真时出错
: U2 ?7 [0 I4 n2 f" K6 t# ** 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.
( _) y" c$ D$ E+ c# ~- u- m" f8 Z# Region: /shift_reg_vlg_tst/i1/u1
/ c5 T$ y# S. n# W# Error loading design& W+ Y7 S' X( p8 `" j' M
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有哪位大神做过这个库函数的仿真,求解答!!! |
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