想請問關於這個晶片中的程式碼是在敘述些什麼(急)

winds77322

不好意思
* ]* f; ]' v) a% ?+ m想請問關於這個晶片中的程式碼是在敘述些什麼
: X* Z9 l7 M) Y  \1 m他有什麼功能


define rom_size 6'd8
1 x! Z3 d/ Q) \# U3 ]! `
module CLOCK_500 (
$ T5 F7 w' c1 x. j& A  G( J% Y6 xCLOCK,
CLOCK_500,
DATA,
/ f% o- `. ]) q9 Z; [/ \5 B+ AEND,
4 y% q4 }: e( N7 X% E: Y9 F" TRESET,
GO,
CLOCK_2
" v) E6 g+ q2 X7 X/ {);
" ~: W+ R& @, G7 }input CLOCK;
input END;
input RESET;
output CLOCK_500;
output [23:0]DATA;
5 O' S# R" O7 p; s: n' Ooutput GO;
output CLOCK_2;
2 f3 i  g4 D, x* p! t2 k- f
+ F) I$ J5 r; e. k7 Z
reg [10:0]COUNTER_500;

& ~2 z& R& k5 G- f; X3 v& }wire CLOCK_500=COUNTER_500[9];
0 o4 A) t  O. }1 _wire CLOCK_2=COUNTER_500[1];

reg [15:0]ROM[`rom_size:0];
reg [15:0]DATA_A;
& K+ K' q" n5 K' d( t) b3 rreg [5:0]address;
wire [23:0]DATA={8'h34,DATA_A};
7 p4 H( w9 C6 C8 o# }" ~
wire GO =((address <= `rom_size) && (END==1))? COUNTER_500[10]:1;
' a4 U( {  v# aalways @(negedge RESET or posedge END) begin
if (!RESET) address=0;
else
if (address <= `rom_size) address=address+1;
end
, y0 ^6 m5 p/ }- H4 s
( B/ C- G  V, |9 F3 Ereg [7:0]vol;

always @(posedge RESET) begin
vol=vol-1;end
8 i6 |  K0 q" E# s1 z3 ~
) O1 a0 {1 k  p  y  n! N: Y# v
5 y$ U% {9 G' Z0 a9 E* aalways @(posedge END) begin
' M+ i- }8 a! Q8 r//ROM[0]= 16'h1e00;
+ P9 r* {9 g4 g, g& WROM[0]= 16'h0c00; //power down
ROM[1]= 16'h0ec2; //master
+ Z8 x; W5 {9 y, o3 T* ?ROM[2]= 16'h0838; //sound select

5 \/ g/ {& v/ Y5 Y4 |ROM[3]= 16'h1000; //mclk
: w/ R+ |8 v  w+ p; c- O0 e: @7 j
. L- M7 O4 Z  {3 H) r- lROM[4]= 16'h0017; //
ROM[5]= 16'h0217; //
1 \- c4 _+ Q. X* E6 yROM[6]= {8'h04,1'b0,vol[6:0]}; //
, t  j% a8 e1 P5 T/ S! v3 XROM[7]= {8'h06,1'b0,vol[6:0]}; //sound vol

# J' {+ z+ q$ {1 v: q2 l//ROM[4]= 16'h1e00; //reset
ROM[`rom_size]= 16'h1201;//active
DATA_A=ROM[address];
end

0 Y8 N. d% ^4 r8 Q3 h8 e0 Halways @(posedge CLOCK ) begin
# R$ P7 D% ^* N+ M8 gCOUNTER_500=COUNTER_500+1;
end

* ]3 e% V8 E0 v8 Z* a8 ?, Bendmodule

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