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
想請問關於這個晶片中的程式碼是在敘述些什麼
他有什麼功能
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9 r: o6 b- Q# u9 a
define rom_size 6'd8

* {1 X) i7 c' ^  h  w8 Wmodule CLOCK_500 (
# n, ]& D2 u6 M5 N0 @: k& `CLOCK,
CLOCK_500,
# c7 N& U, y1 p: y/ U, {* }# j0 kDATA,
+ \7 ]1 B) p5 C- wEND,
RESET,
GO,
CLOCK_2
);
input CLOCK;
# c+ k' i, F! z) ninput END;
! I, C  k6 ^2 h, X# o5 einput RESET;
output CLOCK_500;
output [23:0]DATA;
output GO;
output CLOCK_2;
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reg [10:0]COUNTER_500;
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wire CLOCK_500=COUNTER_500[9];
, M) l  Y- M. n8 L6 o; Fwire CLOCK_2=COUNTER_500[1];

reg [15:0]ROM[`rom_size:0];
" X0 T$ y0 C) e) G* ereg [15:0]DATA_A;
1 L" o1 L! F: ?! m1 X; m; \reg [5:0]address;
wire [23:0]DATA={8'h34,DATA_A};

wire GO =((address <= `rom_size) && (END==1))? COUNTER_500[10]:1;
always @(negedge RESET or posedge END) begin
3 B3 D5 r2 t, F9 vif (!RESET) address=0;
( M  _6 j9 q1 j  o3 ielse
) s% x* a) S, k0 V! `$ uif (address <= `rom_size) address=address+1;
end

reg [7:0]vol;
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always @(posedge RESET) begin
8 e1 m  N/ M$ E2 `8 f+ Qvol=vol-1;end


always @(posedge END) begin
& l3 ?" h9 [- R; J: V6 ~, z//ROM[0]= 16'h1e00;
ROM[0]= 16'h0c00; //power down
6 o) ^9 u9 f8 j+ ~/ mROM[1]= 16'h0ec2; //master
' S! J1 N8 G3 ?* d: l0 m$ |: WROM[2]= 16'h0838; //sound select

5 a$ {: j' r. ~5 p) i' Z/ k+ jROM[3]= 16'h1000; //mclk
- }( s6 p% G: W% M0 `, }% ?
' a$ ]8 B* Q/ {ROM[4]= 16'h0017; //
2 |" j4 G# Q3 j- [/ ^. hROM[5]= 16'h0217; //
ROM[6]= {8'h04,1'b0,vol[6:0]}; //
% A0 d/ ^6 ?0 L/ d. S+ MROM[7]= {8'h06,1'b0,vol[6:0]}; //sound vol

//ROM[4]= 16'h1e00; //reset
ROM[`rom_size]= 16'h1201;//active
; y/ L) [8 x, }9 R. L8 YDATA_A=ROM[address];
/ h  O* H: v2 z( n; Pend
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' x5 z, l8 x# p$ Z/ p! e0 Aalways @(posedge CLOCK ) begin
COUNTER_500=COUNTER_500+1;
end

endmodule

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