fflower

if(clk'event and clk<='1')then
xishu120000<=xishu120000+"1";
elsif(xishu120000<="11101010011000000")then
这个 有点问题吧   IFif(clk'event and clk<='1')then
xishu120000<=xishu120000+"1";

后面能接 ELSIF 吗??