------------------------------------------------------------------------------  This file is a part of the GRLIB VHDL IP LIBRARY--  Copyright (C) 2004 GAISLER RESEARCH----  This program is free software; you can redistribute it and/or modify--  it under the terms of the GNU General Public License as published by--  the Free Software Foundation; either version 2 of the License, or--  (at your option) any later version.----  See the file COPYING for the full details of the license.--------------------------------------------------------------------------------- Entity: 	ahbrom-- File:	ahbrom.vhd-- Author:	Jiri Gaisler - Gaisler Research-- Description:	AHB rom. 0/1-waitstate read------------------------------------------------------------------------------library ieee;use ieee.std_logic_1164.all;library grlib;use grlib.amba.all;use grlib.stdlib.all;use grlib.devices.all;entity ahbrom is  generic (    hindex  : integer := 0;    haddr   : integer := 0;    hmask   : integer := 16#fff#;    pipe    : integer := 0;    tech    : integer := 0;    kbytes  : integer := 1);  port (    rst     : in  std_ulogic;    clk     : in  std_ulogic;    ahbsi   : in  ahb_slv_in_type;    ahbso   : out ahb_slv_out_type  );end;architecture rtl of ahbrom isconstant abits : integer := 9;constant bytes : integer := 368;constant hconfig : ahb_config_type := (  0 => ahb_device_reg ( VENDOR_GAISLER, GAISLER_AHBROM, 0, 0, 0),  4 => ahb_membar(haddr, '1', '1', hmask), others => zero32);signal romdata : std_logic_vector(31 downto 0);signal addr : std_logic_vector(abits-1 downto 2);signal hsel, hready : std_ulogic;begin  ahbso.hresp   <= "00";   ahbso.hsplit  <= (others => '0');   ahbso.hirq    <= (others => '0');  ahbso.hcache  <= '1';  ahbso.hconfig <= hconfig;  ahbso.hindex  <= hindex;  reg : process (clk)  begin    if rising_edge(clk) then       addr <= ahbsi.haddr(abits-1 downto 2);    end if;  end process;  p0 : if pipe = 0 generate    ahbso.hrdata  <= romdata;    ahbso.hready  <= '1';  end generate;  p1 : if pipe = 1 generate    reg2 : process (clk)    begin      if rising_edge(clk) then	hsel <= ahbsi.hsel(hindex) and ahbsi.htrans(1);	hready <= ahbsi.hready;	ahbso.hready <=  (not rst) or (hsel and hready) or	  (ahbsi.hsel(hindex) and not ahbsi.htrans(1) and ahbsi.hready);	ahbso.hrdata  <= romdata;      end if;    end process;  end generate;  comb : process (addr)  begin    case conv_integer(addr) is    when 16#00000# => romdata <= X"81D82000";    when 16#00001# => romdata <= X"03000004";    when 16#00002# => romdata <= X"821060E0";    when 16#00003# => romdata <= X"81884000";    when 16#00004# => romdata <= X"81900000";    when 16#00005# => romdata <= X"81980000";    when 16#00006# => romdata <= X"81800000";    when 16#00007# => romdata <= X"01000000";    when 16#00008# => romdata <= X"03002040";    when 16#00009# => romdata <= X"8210600F";    when 16#0000A# => romdata <= X"C2A00040";    when 16#0000B# => romdata <= X"87444000";    when 16#0000C# => romdata <= X"8608E01F";    when 16#0000D# => romdata <= X"88100000";    when 16#0000E# => romdata <= X"8A100000";    when 16#0000F# => romdata <= X"8C100000";    when 16#00010# => romdata <= X"8E100000";    when 16#00011# => romdata <= X"A0100000";    when 16#00012# => romdata <= X"A2100000";    when 16#00013# => romdata <= X"A4100000";    when 16#00014# => romdata <= X"A6100000";    when 16#00015# => romdata <= X"A8100000";    when 16#00016# => romdata <= X"AA100000";    when 16#00017# => romdata <= X"AC100000";    when 16#00018# => romdata <= X"AE100000";    when 16#00019# => romdata <= X"90100000";    when 16#0001A# => romdata <= X"92100000";    when 16#0001B# => romdata <= X"94100000";    when 16#0001C# => romdata <= X"96100000";    when 16#0001D# => romdata <= X"98100000";    when 16#0001E# => romdata <= X"9A100000";    when 16#0001F# => romdata <= X"9C100000";    when 16#00020# => romdata <= X"9E100000";    when 16#00021# => romdata <= X"86A0E001";    when 16#00022# => romdata <= X"16BFFFEF";    when 16#00023# => romdata <= X"81E00000";    when 16#00024# => romdata <= X"82102002";    when 16#00025# => romdata <= X"81904000";    when 16#00026# => romdata <= X"03000004";    when 16#00027# => romdata <= X"821060E0";    when 16#00028# => romdata <= X"81884000";    when 16#00029# => romdata <= X"01000000";    when 16#0002A# => romdata <= X"01000000";    when 16#0002B# => romdata <= X"01000000";    when 16#0002C# => romdata <= X"87444000";    when 16#0002D# => romdata <= X"8730E01C";    when 16#0002E# => romdata <= X"8688E00F";    when 16#0002F# => romdata <= X"12800016";    when 16#00030# => romdata <= X"03200000";    when 16#00031# => romdata <= X"05040E00";    when 16#00032# => romdata <= X"8410A233";    when 16#00033# => romdata <= X"C4204000";    when 16#00034# => romdata <= X"0539A81B";    when 16#00035# => romdata <= X"8410A260";    when 16#00036# => romdata <= X"C4206004";    when 16#00037# => romdata <= X"050003FC";    when 16#00038# => romdata <= X"C4206008";    when 16#00039# => romdata <= X"82103860";    when 16#0003A# => romdata <= X"C4004000";    when 16#0003B# => romdata <= X"8530A00C";    when 16#0003C# => romdata <= X"03000004";    when 16#0003D# => romdata <= X"82106009";    when 16#0003E# => romdata <= X"80A04002";    when 16#0003F# => romdata <= X"12800006";    when 16#00040# => romdata <= X"033FFC00";    when 16#00041# => romdata <= X"82106100";    when 16#00042# => romdata <= X"0539A81B";    when 16#00043# => romdata <= X"8410A260";    when 16#00044# => romdata <= X"C4204000";    when 16#00045# => romdata <= X"05000008";    when 16#00046# => romdata <= X"82100000";    when 16#00047# => romdata <= X"80A0E000";    when 16#00048# => romdata <= X"02800005";    when 16#00049# => romdata <= X"01000000";    when 16#0004A# => romdata <= X"82004002";    when 16#0004B# => romdata <= X"10BFFFFC";    when 16#0004C# => romdata <= X"8620E001";    when 16#0004D# => romdata <= X"3D1003FF";    when 16#0004E# => romdata <= X"BC17A3E0";    when 16#0004F# => romdata <= X"BC278001";    when 16#00050# => romdata <= X"9C27A060";    when 16#00051# => romdata <= X"03100000";    when 16#00052# => romdata <= X"81C04000";    when 16#00053# => romdata <= X"01000000";    when 16#00054# => romdata <= X"01000000";    when 16#00055# => romdata <= X"01000000";    when 16#00056# => romdata <= X"01000000";    when 16#00057# => romdata <= X"01000000";    when 16#00058# => romdata <= X"00000000";    when 16#00059# => romdata <= X"00000000";    when 16#0005A# => romdata <= X"00000000";    when 16#0005B# => romdata <= X"00000000";    when 16#0005C# => romdata <= X"00000000";    when others => romdata <= (others => '-');    end case;  end process;  -- pragma translate_off  bootmsg : report_version   generic map ("ahbrom" & tost(hindex) &  ": 32-bit AHB ROM Module,  " & tost(bytes/4) & " words, " & tost(abits-2) & " address bits" );  -- pragma translate_on  end;