【文章內(nèi)容簡介】 nto 0)=11011111then st1(7 downto 0)=10111111。data=d6。 elsif st1(7 downto 0)=10111111then st1(7 downto 0)=01111111。data=d7。 end if。end if。end process second。end a。②以下程序是實現(xiàn)一屏一屏顯示“亞運會”Library ieee。Use 。Use 。Use 。Entity weng isPort( Clk,en:in std_logic。 lie:out std_logic_vector(7 downto 0)。列 Com:out std_logic_vector(7 downto 0))。行End weng。Architecture a of weng issignal st1:std_logic_vector(7 downto 0)。signal osc:std_logic。signal osd:std_logic。signal d_ff:std_logic_vector(27 downto 0)。signal data:std_logic_vector(7 downto 0)。signal d0,d1,d2,d3,d4,d5,d6,d7:std_logic_vector(7 downto 0)。signal lie0:std_logic_vector(6 downto 0)。begin=data。lie=st1。D0=10000000when lie0(6 downto 0)=0000000else10000100when lie0(6 downto 0)=0000001else00010000when lie0(6 downto 0)=0000010else00000000。D1=10001001when lie0(6 downto 0)=0000000else11111111when lie0(6 downto 0)=0000001else00001000when lie0(6 downto 0)=0000010else00000000。D2=10010001when lie0(6 downto 0)=0000000else10000000when lie0(6 downto 0)=0000001else01010100when lie0(6 downto 0)=0000010else00000000。D3=11111111when lie0(6 downto 0)=0000000else10101010when lie0(6 downto 0)=0000001else01111010when lie0(6 downto 0)=0000010else00000000。D4=10000001when lie0(6 downto 0)=0000000else10111010when lie0(6 downto 0)=0000001else01011011when lie0(6 downto 0)=0000010else00000000。D5=11111111when lie0(6 downto 0)=0000000else10101010when lie0(6 downto 0)=0000001else01110100when lie0(6 downto 0)=0000010else00000000。D6=10010001when lie0(6 downto 0)=0000000else10111000when lie0(6 downto 0)=0000001else01001000when lie0(6 downto 0)=0000010else00000000。D7=10001000when lie0(6 downto 0)=0000000else10101000when lie0(6 downto 0)=0000001else10010000when lie0(6 downto 0)=0000010else00000000。以上為字庫“亞運會”first:processbeginwait until clk=39。139。if(d_ff(27 downto 0)=2e8)thend_ff(27 downto 0)=0000000000000000000000000000。elsed_ff(27 downto 0)=d_ff+1。end if。osc=not d_ff(10)。osd=not d_ff(26)。end process first。second:process(osc)beginif(osc=39。139。 and osc39。event)then if st1(7 downto 0)=00000000or st1(7 downto 0)=01111111then st1(7 downto 0)=11111110。data=d0。 逐列掃描方式 elsif st1(7 downto 0)=11111110then st1(7 downto 0)=11111101。data=d1。 elsif st1(7 downto 0)=11111101then st1(7 downto 0)=11111011。data=d2。 elsif st1(7 downto 0)=11111011then st1(7 downto 0)=11110111。data=d3。 elsif st1(7 downto 0)=11110111then st1(7 downto 0)=11101111。data=d4。 elsif st1(7 downto 0)=11101111then st1(7 downto 0)=11011111。data=d5。 elsif st1(7 downto 0)=11011111then st1(7 downto 0)=10111111。data=d6。 elsif st1(7 downto 0)=10111111then st1(7 downto 0)=01111111。data=d7。 end if。end if。end process second。third:process(osd)beginif(osd=39。139。 and osd39。event and en=39。039。)thenif lie0(6 downto 0)=0000010then lie0(6 downto 0)=0000000。else lie0(6 downto 0)=lie0+1。end if。end if。end process third。end a。③以下程序實現(xiàn)滾動顯示“王”LIBRARY IEEE。USE 。USE 。USE 。entity gun isPORT( clk,en:IN STD_LOGIC。 lie:out STD_LOGIC_VECTOR(7 DOWNTO 0)。列 :out STD_LOGIC_VECTOR(7 DOWNTO 0))。行END gun。ARCHITECTURE a OF gun ISSIGNAL st1,st2:ST