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module shift_reg(clk,clken,data_in,data_out);+ n( b+ i! w8 T: T0 W
input clk;/ U# K K/ K! g- v1 t1 p* k
input clken;
' x' x' ?' c" W) r: zinput [7:0] data_in;2 Q! ? y4 r9 s0 G
output [7:0] data_out;
+ C; l j$ z, W+ \3 b0 w
0 [; w% H6 w+ _* [2 }% I' t7 M4 e% Z/*always @(posedge clk); _7 Q- J4 U* i* @$ l) q
begin( ]9 m# W+ j4 t" w8 [
data_cnt=data_cnt+8'd1;# i( {& }) E# y2 w, Y2 y
end*/' Q8 W5 n1 f) Y
4 a; Y- @/ }5 J ]6 ]* E+ n
6 A7 X4 v& V# O: O. y* O2 tshift1 u1(0 s3 y1 j: b3 ^* d
.clock(clk),+ U( {6 F! q( D# r5 V$ l, k* L$ u
.clken(clken),
+ \( ?4 U4 w4 x4 f4 C# o .shiftin(data_cnt),
; }0 y, [* K& m% C! y .shiftout(data_out));
1 P6 l5 [- I/ w) b- H: Aendmodule- m' D# P* X0 X' n& L1 r# A l; c
' N% p- q* b6 A: {$ T
测试程序:
0 h! ~/ { v. A& ?4 C9 Ainitial - F% d8 h6 A1 u7 j
begin " f3 X+ }8 f8 P% [' ] X! |
clk=0;/ Z7 ?/ X- \6 |7 N: H, Y
data_in=8'b0;
- N- c9 t5 p& P2 @! L. Sclken=1'b0;
, K/ ]9 m/ k( i3 w6 gend % T5 I) b" p2 ? @2 x! e8 N
' M5 M# T4 `$ {2 s7 G; a9 B; Kalways #10 clk=~clk; + c$ W. f7 r7 [ X5 i$ `8 K7 f
initial6 ^3 K9 n- d& n1 w8 o2 O# l$ W, y
begin5 E! x# l3 B* J; g. q1 |
#100 clken=1'b1;
3 y8 j% b5 _, P4 U #200 clken=1'b0;
Y. G1 i5 J6 c6 m0 K5 ^ #100 clken=1'b1;, [- t. f" i, Y3 J* D" ~
#200 clken=1'b0;
4 P+ c0 W5 j, f #100 clken=1'b1;. ]8 R6 M3 F" Q
#200 clken=1'b0;! I$ n, T0 b6 M0 @( Q
#100 clken=1'b1;0 h) r. \: z9 {& ?+ k
#200 clken=1'b0;
" a* o! M& v7 A( a' I! L #100 clken=1'b1;& w; s% D& m, [2 J; {0 Q0 \* e
#200 clken=1'b0; . h- O! }7 j/ [
#100 clken=1'b1;7 ?6 M1 O( A9 ]. l/ y
end " a7 O4 ~' a* e0 `3 t
always @(posedge clk)
' D4 Q9 `7 _. _& Rbegin, J1 n, [- T+ C0 w, L
if(clken)
! E; C2 b) a7 V& H data_in=data_in+1'b1; ; k, g; Q7 s9 p4 h
end ( n) c( M& Z" O) \7 i& X
endmodule
' P0 K3 `* s0 F: Q( j3 Y# g( J( c
modelsim-ase编译正确,仿真时出错
' t& T- g, Z; f0 l$ F9 T% E) z0 R& d# ** 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.6 ]6 w4 X" q/ O0 U
# Region: /shift_reg_vlg_tst/i1/u1) P4 |$ b2 f6 o2 W
# Error loading design- s6 S) c. A+ Z2 ^
$ f7 s% ]; V' X( e( B* Z
8 Z2 [: N+ s- w7 \+ D
有哪位大神做过这个库函数的仿真,求解答!!! |
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