📄 求助：8路抢答器的vhdl实现（有问题，希望大家帮忙解决，谢谢）--综合电子论坛.mht
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</DIV>
<DIV style=3D"BACKGROUND: #fff; OVERFLOW: hidden; HEIGHT: 1px"></DIV>
<DIV style=3D"MARGIN: 10px">
<DIV=20
style=3D"MARGIN-TOP: 10px; FONT-SIZE: 9pt; MIN-HEIGHT: 160px; =
WORD-BREAK: break-all; LINE-HEIGHT: normal; HEIGHT: auto! important; =
WORD-WRAP: break-word">
<DIV style=3D"LINE-HEIGHT: 22px; HEIGHT: 22px"><IMG alt=3D=B1=ED=C7=E9=20
src=3D"http://www.avrw.com/BBS/pic/Face/1.gif"=20
align=3DabsMiddle><STRONG></STRONG></DIV>4=C7=C0=B4=F0=BF=D8=D6=C6 =
<BR>library ieee ;<BR>use=20
ieee.std_logic_1164.all;<BR>use ieee.std_logic_unsigned.all;<BR>entity =
qiangda=20
is <BR>port( load:in=20
std_logic;<BR>  =
;=20
data:in std_logic_vector(3 downto=20
0);<BR> =
s:in=20
std_logic_vector(7 downto=20
0);<BR> enable:in=20
std_logic;<BR> successful:out=20
std_logic;<BR> =
result:out=20
std_logic_vector(6 downto 0));<BR>end qiangda;<BR>architecture qia of =
qiangda=20
is<BR>signal data_temp:std_logic_vector(3 downto 0);<BR>signal=20
ab:std_logic_vector(1 downto 0);<BR>component bcd_7seg =
is<BR>port(bcd_led : in=20
std_logic_vector(3 downto =
0);<BR> ledseg :=20
out std_logic_vector(6 downto 0));<BR>end component bcd_7seg;<BR>signal=20
data_temp1:std_logic_vector(3 downto=20
0);<BR>begin<BR>process(load,enable,s)<BR>begin<BR> =
ab<=3Dload=20
& enable;<BR> case ab=20
is<BR> when "10" =3D>=20
data_temp1<=3Ddata;successful<=3D=A3=A70=A3=A7;<BR> &nbs=
p; when=20
"01" =3D> if s(1)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0001";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(2)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0010";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(3)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0011";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(4)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0100";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(5)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0101";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(6)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0110";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(7)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"0111";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; =20
elsif s(0)=3D=A3=A71=A3=A7 then=20
data_temp1<=3D"1000";successful<=3D=A3=A71=A3=A7;<BR> &n=
bsp; &nb=
sp; =20
-- else=20
data_temp1<=3D"0000";successful<=3D=A3=A70=A3=A7;<BR> &n=
bsp; &nb=
sp; =20
end if;<BR> when "00"=20
=3D>successful<=3D=A3=A70=A3=A7;=20
data_temp1<=3D"0000";<BR> when =
"11"=20
=3D>successful<=3D=A3=A70=A3=A7;=20
data_temp1<=3D"0000";<BR> when =
others=20
=3D>successful<=3D=A3=A70=A3=A7; =
data_temp1<=3D"0000";<BR> end=20
case;<BR>data_temp<=3Ddata_temp1;<BR>end process;<BR>u1:bcd_7seg port =
map(data_temp,result);<BR><BR>end;<BR><BR><BR></DIV>
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align=3DabsMiddle>2005-5-6=20
21:17:00</DIV>-----------------------------------------------------------=
----<BR>=D7=DB=BA=CF=B5=E7=D7=D3=C2=DB=CC=B3=BB=B6=D3=AD=C4=FA=A3=A1=20
</DIV>
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none">
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></DIV></DIV>
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<DIV style=3D"LINE-HEIGHT: 22px; HEIGHT: 22px; TEXT-ALIGN: left"><SPAN=20
style=3D"FLOAT: right; COLOR: #ff0000; MARGIN-RIGHT: 10px">=B5=DA 4 =
=C2=A5</SPAN> <A=20
href=3D"http://www.avrw.com/BBS/userinfo.asp?name=3D=C1=F7=B2=DD" =
alt=3D"=B2=E9=BF=B4=C1=F7=B2=DD=B5=C4=D7=CA=C1=CF">=D0=C5=CF=A2</A> | <A =
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=DD"=20
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alt=3D"=C1=F7=B2=DD=B5=C4OICQ=BA=C5=C2=EB=A3=BA249188480">QQ</A> | <A=20
href=3D"mailto:xmclx046.student@sina.com" =
alt=3D"=B7=A2=D3=CA=BC=FE=B8=F8=C1=F7=B2=DD">Email</A> | <A=20
href=3D"http://www.avrw.com/BBS/" target=3D_blank =
alt=3D"=B7=C3=CE=CA=C1=F7=B2=DD=B5=C4=D6=F7=D2=B3">=D6=F7=D2=B3</A> | <A =
href=3D"http://www.avrw.com/BBS/say.asp?action=3Dedit&BoardID=3D14&am=
p;ID=3D29850&BbsID=3D181038&tb=3D1&page=3D1"=20
alt=3D"=B1=E0=BC=AD=CC=FB=D7=D3=C4=DA=C8=DD">=B1=E0=BC=AD</A> | <A=20
href=3D"http://www.avrw.com/BBS/say.asp?action=3Dreply&BoardID=3D14&a=
mp;ID=3D29850&BbsID=3D181038&TB=3D1&page=3D100"=20
alt=3D"=D2=FD=D3=C3=CC=FB=D7=D3=C4=DA=C8=DD">=D2=FD=D3=C3</A> | <A=20
onmouseover=3D"dropdownmenu(this, event, '181038');">=B9=DC=C0=ED</A> =
</DIV>
<DIV style=3D"BACKGROUND: #fff; OVERFLOW: hidden; HEIGHT: 1px"></DIV>
<DIV style=3D"MARGIN: 10px">
<DIV=20
style=3D"MARGIN-TOP: 10px; FONT-SIZE: 9pt; MIN-HEIGHT: 160px; =
WORD-BREAK: break-all; LINE-HEIGHT: normal; HEIGHT: auto! important; =
WORD-WRAP: break-word">
<DIV style=3D"LINE-HEIGHT: 22px; HEIGHT: 22px"><IMG alt=3D=B1=ED=C7=E9=20
src=3D"http://www.avrw.com/BBS/pic/Face/1.gif"=20
align=3DabsMiddle><STRONG></STRONG></DIV>library ieee ;<BR>use=20
ieee.std_logic_1164.all;<BR>use ieee.std_logic_arith.all;<BR>use=20
ieee.std_logic_unsigned.all;<BR>entity control is=20
<BR>port( work:in=20
std_logic;<BR> timeover:in=20
std_logic;<BR> successful:in=20
std_logic;<BR>  =
;=20
down:out=20
std_logic;<BR> enspeak:out=
=20
std_logic;<BR> =
enable:out=20
std_logic);<BR>end control;<BR>architecture con of control=20
is<BR>begin<BR>process=20
(work,successful,timeover)<BR>begin<BR> if =
work=3D=A3=A71=A3=A7 and=20
successful=3D=A3=A70=A3=A7and timeover=3D=A3=A70=A3=A7 then=20
<BR> down<=3D=
=A3=A71=A3=A7;enable<=3D=A3=A71=A3=A7;enspeak<=3D=A3=A71=A3=A7;<BR>=
elsif=20
successful=3D=A3=A71=A3=A7 then=20
down<=3D=A3=A70=A3=A7;enspeak<=3D=A3=A71=A3=A7;enable<=3D=A3=A70=
=A3=A7;<BR> el=
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