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VHDL Error. Type of identifier does not agree with it's usage

Altera_Forum
Honored Contributor II
‎10-22-2017 04:49 PM
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library ieee; 

use ieee.std_logic_1164.all; 

use ieee.std_logic_arith.all; 

use ieee.std_logic_unsigned.all; 

use ieee.numeric_std; 

 

 

entity multi_main_file is 

port( 

Clock,reset: in std_logic 

); 

 

 

end multi_main_file; 

 

 

architecture beh of multi_main_file is 

 

 

component pc_adder_mul is 

port( 

add_in: in std_logic_vector(31 downto 0); 

control: in std_logic; 

add_out: out std_logic_vector(31 downto 0) 

); 

end component; 

 

 

component and1 is 

port( 

and_in1: in std_logic; 

and_in2: in std_logic; 

and_out: out std_logic 

); 

end component; 

 

 

component alu_control is 

port ( 

instr_5_0: in STD_LOGIC_VECTOR (5 downto 0); 

alu_op: in STD_LOGIC_VECTOR (1 downto 0); 

alu_control_out: out STD_LOGIC_VECTOR (2 downto 0) 

); 

end component; 

 

 

component control_unit is 

port( 

Instruction: in std_logic_vector(5 downto 0); 

Reg_Dest: out std_logic; 

Branch: out std_logic; 

MemRead: out std_logic; 

MemToReg: out std_logic; 

ALUOp: out std_logic_vector(1 downto 0); 

MemWrite: out std_logic; 

ALUSrc: out std_logic; 

RegWrite:out std_logic 

--Jum: out std_logic; 

); 

end component; 

 

 

component data_memory is 

port( 

MemWrite: in std_logic; 

MemRead: in std_logic; 

Clock: in std_logic; 

address:in std_logic_vector(31 downto 0); 

Write_Data: in std_logic_vector(31 downto 0); 

Read_Data: out std_logic_vector(31 downto 0) 

); 

end component; 

 

 

component instruction_memory is 

port( 

Instruction_Addr: in std_logic_vector(31 downto 0); 

Instruction: out std_logic_vector(31 downto 0) 

); 

end component; 

 

 

component alu is 

port( 

A: in std_logic_vector(31 downto 0); 

B: in STD_LOGIC_VECTOR(31 downto 0); 

alu_control: in STD_LOGIC_VECTOR(2 downto 0); 

result: out STD_LOGIC_VECTOR(31 downto 0); 

zero_flag: out STD_LOGIC 

); 

end component; 

 

 

component program_counter is 

port( 

 

Clock: in std_logic; 

PC_in: in std_logic_vector(31 downto 0); 

PC_out: out std_logic_vector(31 downto 0) 

); 

end component; 

 

 

component register_file is 

generic( 

Data_width:integer:=32; 

Address_width:integer:=5 

); 

port( 

Read_Reg_1: in std_logic_vector(Address_width-1 downto 0); 

Read_Reg_2: in std_logic_vector(Address_width-1 downto 0); 

Write_Reg: in std_logic_vector(Address_width-1 downto 0); 

Write_Data: in std_logic_vector(Data_width-1 downto 0); 

Read_Data_1: out std_logic_vector(Data_width-1 downto 0); 

Read_Data_2: out std_logic_vector(Data_width-1 downto 0); 

Mem_Write: in std_logic; 

Clock: in std_logic  

); 

end component; 

 

 

component shift_left_module is 

port ( 

l_sh_in: in STD_LOGIC_VECTOR (31 downto 0); 

l_sh_out: out STD_LOGIC_VECTOR (31 downto 0) 

); 

end component; 

 

 

component sign_extender is 

port( 

exten_in: in STD_LOGIC_VECTOR (15 downto 0); 

exten_out: out STD_LOGIC_VECTOR (31 downto 0) 

); 

end component; 

 

 

component adder1 is 

port( 

Add_in1: in std_logic_vector(31 downto 0); 

Add_in2: in std_logic_vector(31 downto 0); 

Add_out: out std_logic_vector(31 downto 0) 

);  

end component; 

 

 

component mux_32 is 

port ( 

 

 

in1: in std_logic_vector(31 downto 0);  

in2: in STD_LOGIC_VECTOR(31 downto 0); 

mux_select: in STD_LOGIC; 

mux_out: out STD_LOGIC_VECTOR(31 downto 0) 

); 

end component; 

 

 

component mux_5 is 

port ( 

mux_select: in STD_LOGIC; 

in1: in std_logic_vector(4 downto 0);  

in2: in STD_LOGIC_VECTOR(4 downto 0); 

mux_out: out STD_LOGIC_VECTOR(4 downto 0) 

); 

end component; 

 

 

component mux_alu is 

port ( 

 

 

in1: in std_logic_vector(31 downto 0);  

in2: in STD_LOGIC_VECTOR(31 downto 0); 

in3: in std_logic_vector(31 downto 0);  

mux_select: in STD_LOGIC_vector(1 downto 0); 

mux_out: out STD_LOGIC_VECTOR(31 downto 0) 

); 

end component; 

 

 

component or1 is 

port( 

in1: in std_logic; 

in2: in std_logic; 

out1: out std_logic 

); 

end component; 

 

 

component mem_data_reg is 

port( 

clock: in std_logic; 

in1: in std_logic_vector(31 downto 0); 

out1: out std_logic_vector(31 downto 0); 

end component; 

 

 

component shift_left_26 is 

port ( 

l_sh_in: in STD_LOGIC_VECTOR (25 downto 0); 

l_sh_out: out STD_LOGIC_VECTOR (27 downto 0) 

); 

end component; 

 

 

component instr_mem is 

port ( 

datain: in STD_LOGIC_VECTOR (31 downto 0); 

irwrite: in STD_LOGIC; 

irout: out std_logic_vector(31 downto 0) 

); 

end component; 

 

 

component tempreg is 

port ( 

datain :in std_logic_vector(31 downto 0); 

clk :in std_logic; 

dataout out std_logic_vector(31 downto 0); 

end component; 

 

 

 

component mux_aluop is 

port ( 

 

 

in1: in std_logic_vector(31 downto 0);  

in2: in std_logic; 

in3: in std_logic_vector(31 downto 0);  

in4: in std_logic_vector(31 downto 0);  

mux_select: in STD_LOGIC_vector(1 downto 0); 

mux_out: out STD_LOGIC_VECTOR(31 downto 0) 

); 

end component; 

 

 

 

 

signal s0,s1,s2,s3,s4,s5,s6,s8,s9,s10,s11,s12,s13,s14,s15,s17,s18: std_logic_vector(31 downto 0); 

signal s16: std_LOGIC_VECTOR (31 downto 0); 

signal c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c14,c15,c16: std_logic; 

signal d1: std_logic_vector(4 downto 0); 

signal c11,c12,c13: std_logic_vector(1 downto 0); 

signal c17:std_logic_vector(3 downto 0); 

signal w1: std_logic_vector(27 downto 0); 

 

 

begin 

 

 

s18(27 downto 0) <= w1(27 downto 0); 

s18(31 downto 28) <= s1(31 downto 28); 

 

 

 

 

 

 

mul1: pc_adder_mul port map(s0,c15,s1); 

mul2: mux_32 port map(s1,s16,c3,s2); 

mul3: data_memory port map(c5,c4,clock,s2,s13,s3); 

mul4: instr_mem port map (s3,c7,s5); 

mul5: mem_data_reg port map(clock,s3,s4); 

mul6: register_file port map(s5(25 downto 21),s5(20 downto 16),d1,s8,s11,s10,c9,clock); 

mul7: mux_5 port map(c8,s5(15 downto 0), s5(20 downto 16),d1); 

mul8: mux_32 port map(s4,s16,c6,s8); 

mul9: sign_extender port map(s5(15 downto 0),s9); 

mul10: shift_left_module port map(s9,s17); 

mul11: tempreg port map(s11,clock,s12); 

mul12: tempreg port map(s10,clock,s13); 

mul13: shift_left_26 port map(s5(25 downto 0),s18); 

mul14: mux_32 port map(s12,s1,c10,s6); 

mul15: mux_alu port map(s13,s9,s17,c11,s14); 

mul16: alu_control port map(s5(5 downto 0),c17,c12); 

mul17: alu port map(s6,s14,c17,s15,c16); 

mul18: tempreg port map(s15,clock,s16); 

mul19: mux_aluop port map(s15,s16,s18,c13,s0); 

end beh; 

 

mul19: mux_aluop port map(s15,s16,s18,c13,s0); error at s16. 

it says type of identifier doesnot agree with it's usage. 

thanks in advance. help appreciated !
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11 Replies
Altera_Forum
Honored Contributor II
‎10-22-2017 04:58 PM
3,271 Views

Could you describe the problem you have? Just posting code (use code tags next time) and a question in the title makes it difficult to help you. Also, use descriptive names for signals. w17 does not help in debugging.

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Altera_Forum
Honored Contributor II
‎10-22-2017 05:03 PM
3,271 Views

Thanks for the quick reply. I am implementing mips multi-cycle processor so it requires alot of signals. That's why I've use character with numbers. Secondly the problem is this that when I compile the code, the error says: The type of identifier "s16" does not agree with it's usage as "std_logic" type

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Altera_Forum
Honored Contributor II
‎10-22-2017 05:45 PM
3,271 Views

what are the types of the ports on mux_aluop? and what types do you map onto that?

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Altera_Forum
Honored Contributor II
‎10-22-2017 05:53 PM
3,271 Views

--mux32bit 

library IEEE; 

use IEEE.STD_LOGIC_1164.ALL; 

use IEEE.STD_LOGIC_ARITH.ALL; 

use IEEE.STD_LOGIC_UNSIGNED.ALL; 

use ieee.numeric_std; 

 

entity mux_aluop is 

port ( 

 

in1: in std_logic_vector(31 downto 0);  

in2: in std_LOGIC_VECTOR(31 downto 0); 

in3: in std_logic_vector(31 downto 0);  

mux_select: in STD_LOGIC_vector(1 downto 0); 

mux_out: out STD_LOGIC_VECTOR(31 downto 0) 

); 

end mux_aluop; 

architecture behave of mux_aluop is 

begin 

process(mux_select) 

begin 

if mux_select = "00" then 

mux_out<=in1; 

elsif mux_select = "01" then 

mux_out<=in2; 

elsif mux_select = "10" then 

mux_out<=in3; 

end if; 

end process; 

end behave;
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Altera_Forum
Honored Contributor II
‎10-22-2017 05:56 PM
3,271 Views

I have seen the code (start using code tags), but try to answer the question in a sentence, with words, not wit code. what would you answer? 

[edit] I did not see that part, but try to compare that code to the one in the other (I guess file) you copied here. What is different?
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Altera_Forum
Honored Contributor II
‎10-22-2017 05:58 PM
3,271 Views

mux_aluop is a multiplexer designed which is 4x1 mux. The input and the output both have std_logic_vector

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Altera_Forum
Honored Contributor II
‎10-22-2017 05:59 PM
3,271 Views

and what does your code specify them to be? (at all places)

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Altera_Forum
Honored Contributor II
‎10-22-2017 06:02 PM
3,271 Views

I have basically done port mapping. The input and output provided in mux_aluop is the same as in the main file. Their types are same but still I can't figure it out where is the error .

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Altera_Forum
Honored Contributor II
‎10-22-2017 06:07 PM
3,271 Views

are you sure the types are the same in the entity declaration, the component declaration and the component instantiation?

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Altera_Forum
Honored Contributor II
‎10-22-2017 06:17 PM
3,271 Views

Thanks Man! the problem has been solved ! but another one popped out. I will let you know another one if you could help me ?

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Altera_Forum
Honored Contributor II
‎10-22-2017 06:31 PM
3,271 Views

sure, what is the problem

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