VHDL对象已使用但未声明。

Question

我正在为一个带有两个输出的10-4编码器进行学校项目。我对架构非常有信心，我认为我的错误只是语法。我不断收到“未声明使用对象T1”的信息，请帮忙！我们的指令是找到第一个MSB，然后对其进行掩码并找到第二个。

library ieee;
use ieee.std_logic_1164.all;
entity enhanced_prio is 
    port(
        r: in std_logic_vector(9 downto 0); 
        fst, snd: out std_logic_vector(3 downto 0) 
        ); 
end enhanced_prio; 


architecture count of enhanced_prio is 

 signal temp:std_logic_vector(9 downto 0);
 signal t1:std_logic_vector(3 downto 0);

process (temp,t1)
begin

if(r="1000000000")then 
    fst <= "1010";
    t1  <= "1010";

    else (r = "0100000000") then 
   fst <= "1001";
    t1 <= "1001";

    elsif (r = "0010000000") then
   fst <= "1000";
    t1 <= "1000";

    elsif (r = "0001000000") then 
    fst <= "0111";
    t1 <= "0111";

    elsif (r = "0000100000") then
    fst <= "0110";
    t1 <= "0110";

    elsif (r = "0000010000") then
    fst <= "0101";
    t1 <= "0101";

    elsif (r = "0000001000") then
    fst <= "0100";
    t1 <= "0100";

    elsif (r = "0000000100") then
    fst <= "0011";
    t1 <= "0011";

    elsif (r = "0000000010") then
    fst <= "0010";
    t1 <= "0010";

    elsif (r = "0000000001") then   
    fst <= "0001";
    t1 <= "0001";

    else (r = other ) then
    fst<= "1111";
    t1 <= "1111";
    end if; 

if (t1 = "1010") then temp <= r AND "0111111111";
elsif (t1 = "1001") then temp <= r AND "0011111111";    
elsif (t1 = "1000") then temp <= r AND "0001111111";
elsif (t1 = "0111") then temp <= r AND "0000111111";
elsif (t1 = "0110") then temp <= r AND "0000011111";
elsif (t1 = "0101") then temp <= r AND "0000001111";
elsif (t1 = "0100") then temp <= r AND "0000000111";
elsif (t1 = "0011") then temp <= r AND "0000000011";
elsif (t1 = "0010") then temp <= r AND "0000000001";
elsif (t1 = "0001") then temp <= r AND "0000000000";
else (t1 = "1111") then temp <= r AND "1111111111";
    end if; 

if (temp = "1000000000") then 
    snd <= "1010";

    elsif (temp = "0100000000") then 
   snd <= "1001";

    elsif (temp = "0010000000") then
   snd <= "1000";

    elsif (temp = "0001000000") then 
    snd <= "0111"; 

    elsif (temp = "0000100000") then
    snd <= "0110";

    elsif (temp = "0000010000") then
    snd <= "0101";

    elsif (temp = "0000001000") then
    snd <= "0100";

    elsif (temp = "0000000100") then
    snd <= "0011";

    elsif (temp = "0000000010") then
    snd <= "0010";

    elsif (temp = "0000000001") then    
    snd <= "0001";

    else (temp = other ) then
    snd<= "1111";   
    end if; 


    end process;

    end count;