# VHDL counter by 1's and 2's problem

#### Titanicsailson

Joined Nov 21, 2008
2
I am creating a counter using VHDL and a DE2 board. Its for a scoreboard I want to eventually make for a project and I want it to count by 1's and two's so its like a scoreboard for a basketball game with no three pointers. I have been able to make it count by 1's seperately and two's seperatly but I cant get it to work for both. Ill paste my code below. Can someone please look it over and tell me what they think is wrong. Im hoping its just a stupid mistake but I appreciate any help.

Thank you

--------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.all;
--------------------------------
ENTITY counter IS
PORT (clk, inp, rst: IN STD_LOGIC;--Manual Clock--
digit1,digit2 : OUT STD_LOGIC_VECTOR (6 DOWNTO 0));
END counter;
--------------------------------
ARCHITECTURE counter of counter IS
BEGIN
PROCESS(clk, rst, inp)
VARIABLE temp1: INTEGER RANGE 0 TO 10;
VARIABLE temp2: INTEGER RANGE 0 TO 10;
VARIABLE inc: INTEGER RANGE 0 TO 2;
BEGIN
------------ counter: -------------------
IF (inp='1') THEN --If high then adds by 1
inc := 1;
ELSE inc := 2; --- IF low then adds by 2
IF (rst='1') THEN
temp1:= 0;
temp2:= 0;
ELSIF (clk'EVENT AND clk='1') THEN
temp1 := temp1 + inc;
----------Digit Carryover-------
IF (temp1=10) THEN
temp1:= 0;
temp2:= temp2 + 1;
IF (temp2=10) THEN
temp2 := 0;
If (inp='0' AND temp1=9) THEN
temp1:= 1;
temp2:= temp2 + 1;
END IF;
END IF;
END if;
END IF;
END IF;
-------------BCD to SSD conversion: -------------------
CASE temp1 IS
WHEN 0 => digit1 <= "1111110"; --7E
WHEN 1 => digit1 <= "0110000"; --30
WHEN 2 => digit1 <= "1101101"; --6D
WHEN 3 => digit1 <= "1111001"; --79
WHEN 4 => digit1 <= "0110011"; --33
WHEN 5 => digit1 <= "1011011"; --5B
WHEN 6 => digit1 <= "1011111"; --5F
WHEN 7 => digit1 <= "1110000"; --70
WHEN 8 => digit1 <= "1111111"; --7F
WHEN 9 => digit1 <= "1111011"; --7B
WHEN OTHERS => NULL;
END CASE;
-------------------------------------
CASE temp2 IS
WHEN 0 => digit2 <= "1111110"; --7E
WHEN 1 => digit2 <= "0110000"; --30
WHEN 2 => digit2 <= "1101101"; --6D
WHEN 3 => digit2 <= "1111001"; --79
WHEN 4 => digit2 <= "0110011"; --33
WHEN 5 => digit2 <= "1011011"; --5B
WHEN 6 => digit2 <= "1011111"; --5F
WHEN 7 => digit2 <= "1110000"; --70
WHEN 8 => digit2 <= "1111111"; --7F
WHEN 9 => digit2 <= "1111011"; --7B
WHEN OTHERS => NULL;
END CASE;
END PROCESS;
END counter;