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VHDL to Verilog Conversion
#1
Hi,

does anyone know a good VHDL to Verilog converter?

I am using the Alchitry Cu with icestorm/nextpnr. And as yosys only works with Verilog I can not apply my VHDL knowledge.

I currently write stuff in Verilog but it is not my language of choice Wink

- RRC
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#2
Update: I found this nice piece of software (seems very experimental now): https://github.com/ghdl/ghdl-yosys-plugin

I will try it in the next days.

- RRC
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#3
UPDATE: I wrote a quick LED counter to test and It works fine:

Code:
LIBRARY IEEE;
USE IEEE.std_logic_1164.ALL;
USE IEEE.numeric_std.ALL;

ENTITY alchitry_led IS
       PORT (clk : IN std_logic;
             usb_rx : IN std_logic;
             usb_tx : OUT std_logic;
             led : OUT std_logic_vector (7 DOWNTO 0));
END alchitry_led;

ARCHITECTURE alchitry_led_behav OF alchitry_led IS
       SIGNAL clk_div : unsigned (31 DOWNTO 0);
       SIGNAL cnt : unsigned (7 DOWNTO 0);
       SIGNAL div : std_logic;

BEGIN
       led <= std_logic_vector(cnt);
       div <= std_logic(clk_div(24));
       usb_tx <= usb_rx;

       PROCESS (clk)

       BEGIN
               IF clk'EVENT AND clk = '1' THEN
                       clk_div <= clk_div + 1;
               END IF;
       END PROCESS;

       PROCESS (div)

       BEGIN
               IF div'EVENT AND div = '1' THEN
                       cnt <= cnt + 1;
               END IF;
       END PROCESS;

END alchitry_led_behav;

I will further try if I can use the PLL etc. directly from VHDL. If there is demand I am now able to write a HowTo (I don't know if anyone else wants to use Icestorm with VHDL  Wink ).

- RRC
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