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2021 day1/vhdl: clean up

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Xiretza 2021-12-01 14:52:22 +01:00
parent 4e8d0e3f36
commit fc223c2746
1 changed files with 11 additions and 11 deletions
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22
2021/day1/vhdl/top.vhdl
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@ -23,7 +23,7 @@ entity top is
end entity; end entity;
architecture arch of top is architecture arch of top is
function get_window_size return positive is function WINDOW_SIZE return positive is
begin begin
if STEP = 1 then if STEP = 1 then
return 1; return 1;
@ -32,14 +32,13 @@ architecture arch of top is
end if; end if;
end function; end function;
constant WINDOW_SIZE : positive := get_window_size;
type number_t is array(MAX_INPUT_DIGITS-1 downto 0) of digit_t; type number_t is array(MAX_INPUT_DIGITS-1 downto 0) of digit_t;
type window_t is array(0 to WINDOW_SIZE) of number_t; type window_t is array(WINDOW_SIZE-1 downto 0) of number_t;
signal current_number : number_t;
signal window : window_t; signal window : window_t;
signal window_countdown : natural range WINDOW_SIZE downto 0 := 0; signal window_count : natural range 0 to WINDOW_SIZE := 0;
begin begin
process(clk) process(clk)
begin begin
@ -47,23 +46,24 @@ begin
if reset then if reset then
output <= (others => '0'); output <= (others => '0');
output_valid <= '1'; output_valid <= '1';
window_countdown <= 0; window_count <= 0;
elsif input_valid then elsif input_valid then
output_valid <= '0'; output_valid <= '0';
if char = LF then if char = LF then
if window_countdown = WINDOW_SIZE then if window_count = WINDOW_SIZE then
if window(0) > window(window'high) then if current_number > window(window'high) then
output <= output + 1; output <= output + 1;
end if; end if;
output_valid <= '1'; output_valid <= '1';
else else
window_countdown <= window_countdown + 1; window_count <= window_count + 1;
end if; end if;
window <= number_t'(others => 0) & window(0 to window'high-1); window <= window(window'high-1 downto 0) & current_number;
current_number <= (others => 0);
else else
window(0) <= window(0)(MAX_INPUT_DIGITS-2 downto 0) & char_to_digit(char); current_number <= current_number(current_number'left-1 downto 0) & char_to_digit(char);
end if; end if;
end if; end if;
end if; end if;