VGAコントローラIPの雛形作成

先の "Create or Import Peripherarl"により、VGAコントローラIPの雛形をが作 成できましたが、まだプロセッサとのインタフェースに関する雛形が作成され ただけです。
VGAコントローラの本体については、すべて作成する必要があります。

VGAモジュールの仕様

画面構成、文字構成およびメモリマップの対応を下図に示します。MicroBlazeの ような32ビットプロセッサの場合、メモリのアドレスはバイト単位に振られてい ますが、1回のデータ読み書きで32ビット(4バイト)の同時アクセスが可能となっ ています。したがって、バイト単位でアクセスするメモリの場合は4アドレス飛びに 配置されることになります。



VGAモジュールのブロック図

VGAモジュールは、主に以下のブロックからなる。

VGA画像表示の考え方

VGAモニタへの画像表示は、通常のテレビと同様にラスタスキャンで表示を行っ ている。 これらのカウンタ等を実現するために、以下のような定義をしておくと良いであ ろう。 
`define HMAX 100 // H total Char.
`define HSIZ  80 // H Size
`define HSP   84 // H Sync. Pos.
`define HSL   12 // H Sync. Len.
`define HCR    8 // H dots per Char.
`define VMAX  28 // V total Char.
`define VSIZ  25 // V Size
`define VSP   26 // V Sync. Pos.
`define VSL    1 // V Sync. Len.
`define VCR   19 // V lines per Char.
また、カウンタの宣言は以下のとおりとなる。 
reg    [3:0] CNT;
reg    [6:0] HCNT;  // H Counter 0-99
reg    [4:0] VCNT;  // V Counter 0-27
reg    [4:0] RCNT;  // R Counter 0-18
ここで、水平文字ドットカウンタが4ビットで、0〜15までカウントできるように なっている。実験ボードに供給されているクロックとして50MHzが供給されてい るため、実際には50MHzの同期回路として設計する必要がある。したがって、 CNT[0] で25MHz に分周し、実際の水平文字ドットカウンタとしてはCNT[3:1] を 使用する。

VideoRAMとChar.ROMのアクセス方法

VGAモニタへの画像表示は、通常のテレビと同様にラスタスキャンで表示を行っ ている。



仕様が明確になったならば、以下のコマンドによりVGAコントローラの中身を記 述していきます。これから2つのファイルに修正を加えます。 まず、VGAコントローラIPの上位階層となる "vga.vhd" にVGAコントローラに必 要な出力端子(R, G, B, HS, VS )を追加します。このファイルは VHDL というハー ドウェア記述言語で記載されています。 
$ cd pcores/vga_v1_00_a/hdl/vhdl
$ gedit vga.vhd
これを以下のように変更します。 具体的には、 
    R  : out  std_logic;
    G  : out  std_logic;
    B  : out  std_logic;
    HS : out  std_logic;
    VS : out  std_logic;
を2箇所に追加し、 
      R => R,
      G => G,
      B => B,
      HS=> HS,
      VS=> VS,
を1箇所に追加します。
変更後 変更前 
------------------------------------------------------------------------------
-- vga.vhd - entity/architecture pair
------------------------------------------------------------------------------
-- IMPORTANT:
-- DO NOT MODIFY THIS FILE EXCEPT IN THE DESIGNATED SECTIONS.
--
-- SEARCH FOR --USER TO DETERMINE WHERE CHANGES ARE ALLOWED.
--
-- TYPICALLY, THE ONLY ACCEPTABLE CHANGES INVOLVE ADDING NEW
-- PORTS AND GENERICS THAT GET PASSED THROUGH TO THE INSTANTIATION
-- OF THE USER_LOGIC ENTITY.
------------------------------------------------------------------------------
--
-- ***************************************************************************
-- ** Copyright (c) 1995-2009 Xilinx, Inc.  All rights reserved.            **
-- **                                                                       **
-- ** Xilinx, Inc.                                                          **
-- ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"         **
-- ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND       **
-- ** SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,        **
-- ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,        **
-- ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION           **
-- ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,     **
-- ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE      **
-- ** FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY              **
-- ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE               **
-- ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR        **
-- ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF       **
-- ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS       **
-- ** FOR A PARTICULAR PURPOSE.                                             **
-- **                                                                       **
-- ***************************************************************************
--
------------------------------------------------------------------------------
-- Filename:          vga.vhd
-- Version:           1.00.a
-- Description:       Top level design, instantiates library components and user logic.
-- Date:              Sun Nov 29 13:11:59 2009 (by Create and Import Peripheral Wizard)
-- VHDL Standard:     VHDL'93
------------------------------------------------------------------------------
-- Naming Conventions:
--   active low signals:                    "*_n"
--   clock signals:                         "clk", "clk_div#", "clk_#x"
--   reset signals:                         "rst", "rst_n"
--   generics:                              "C_*"
--   user defined types:                    "*_TYPE"
--   state machine next state:              "*_ns"
--   state machine current state:           "*_cs"
--   combinatorial signals:                 "*_com"
--   pipelined or register delay signals:   "*_d#"
--   counter signals:                       "*cnt*"
--   clock enable signals:                  "*_ce"
--   internal version of output port:       "*_i"
--   device pins:                           "*_pin"
--   ports:                                 "- Names begin with Uppercase"
--   processes:                             "*_PROCESS"
--   component instantiations:              "I_<#|FUNC>"
------------------------------------------------------------------------------

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;

library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
use proc_common_v3_00_a.ipif_pkg.all;

library plbv46_slave_single_v1_01_a;
use plbv46_slave_single_v1_01_a.plbv46_slave_single;

------------------------------------------------------------------------------
-- Entity section
------------------------------------------------------------------------------
-- Definition of Generics:
--   C_SPLB_AWIDTH                -- PLBv46 slave: address bus width
--   C_SPLB_DWIDTH                -- PLBv46 slave: data bus width
--   C_SPLB_NUM_MASTERS           -- PLBv46 slave: Number of masters
--   C_SPLB_MID_WIDTH             -- PLBv46 slave: master ID bus width
--   C_SPLB_NATIVE_DWIDTH         -- PLBv46 slave: internal native data bus width
--   C_SPLB_P2P                   -- PLBv46 slave: point to point interconnect scheme
--   C_SPLB_SUPPORT_BURSTS        -- PLBv46 slave: support bursts
--   C_SPLB_SMALLEST_MASTER       -- PLBv46 slave: width of the smallest master
--   C_SPLB_CLK_PERIOD_PS         -- PLBv46 slave: bus clock in picoseconds
--   C_INCLUDE_DPHASE_TIMER       -- PLBv46 slave: Data Phase Timer configuration; 0 = exclude timer, 1 = include timer
--   C_FAMILY                     -- Xilinx FPGA family
--   C_MEM0_BASEADDR              -- User memory space 0 base address
--   C_MEM0_HIGHADDR              -- User memory space 0 high address
--
-- Definition of Ports:
--   SPLB_Clk                     -- PLB main bus clock
--   SPLB_Rst                     -- PLB main bus reset
--   PLB_ABus                     -- PLB address bus
--   PLB_UABus                    -- PLB upper address bus
--   PLB_PAValid                  -- PLB primary address valid indicator
--   PLB_SAValid                  -- PLB secondary address valid indicator
--   PLB_rdPrim                   -- PLB secondary to primary read request indicator
--   PLB_wrPrim                   -- PLB secondary to primary write request indicator
--   PLB_masterID                 -- PLB current master identifier
--   PLB_abort                    -- PLB abort request indicator
--   PLB_busLock                  -- PLB bus lock
--   PLB_RNW                      -- PLB read/not write
--   PLB_BE                       -- PLB byte enables
--   PLB_MSize                    -- PLB master data bus size
--   PLB_size                     -- PLB transfer size
--   PLB_type                     -- PLB transfer type
--   PLB_lockErr                  -- PLB lock error indicator
--   PLB_wrDBus                   -- PLB write data bus
--   PLB_wrBurst                  -- PLB burst write transfer indicator
--   PLB_rdBurst                  -- PLB burst read transfer indicator
--   PLB_wrPendReq                -- PLB write pending bus request indicator
--   PLB_rdPendReq                -- PLB read pending bus request indicator
--   PLB_wrPendPri                -- PLB write pending request priority
--   PLB_rdPendPri                -- PLB read pending request priority
--   PLB_reqPri                   -- PLB current request priority
--   PLB_TAttribute               -- PLB transfer attribute
--   Sl_addrAck                   -- Slave address acknowledge
--   Sl_SSize                     -- Slave data bus size
--   Sl_wait                      -- Slave wait indicator
--   Sl_rearbitrate               -- Slave re-arbitrate bus indicator
--   Sl_wrDAck                    -- Slave write data acknowledge
--   Sl_wrComp                    -- Slave write transfer complete indicator
--   Sl_wrBTerm                   -- Slave terminate write burst transfer
--   Sl_rdDBus                    -- Slave read data bus
--   Sl_rdWdAddr                  -- Slave read word address
--   Sl_rdDAck                    -- Slave read data acknowledge
--   Sl_rdComp                    -- Slave read transfer complete indicator
--   Sl_rdBTerm                   -- Slave terminate read burst transfer
--   Sl_MBusy                     -- Slave busy indicator
--   Sl_MWrErr                    -- Slave write error indicator
--   Sl_MRdErr                    -- Slave read error indicator
--   Sl_MIRQ                      -- Slave interrupt indicator
------------------------------------------------------------------------------

entity vga is
  generic
  (
    -- ADD USER GENERICS BELOW THIS LINE ---------------
    --USER generics added here
    -- ADD USER GENERICS ABOVE THIS LINE ---------------

    -- DO NOT EDIT BELOW THIS LINE ---------------------
    -- Bus protocol parameters, do not add to or delete
    C_SPLB_AWIDTH                  : integer              := 32;
    C_SPLB_DWIDTH                  : integer              := 128;
    C_SPLB_NUM_MASTERS             : integer              := 8;
    C_SPLB_MID_WIDTH               : integer              := 3;
    C_SPLB_NATIVE_DWIDTH           : integer              := 32;
    C_SPLB_P2P                     : integer              := 0;
    C_SPLB_SUPPORT_BURSTS          : integer              := 0;
    C_SPLB_SMALLEST_MASTER         : integer              := 32;
    C_SPLB_CLK_PERIOD_PS           : integer              := 10000;
    C_INCLUDE_DPHASE_TIMER         : integer              := 0;
    C_FAMILY                       : string               := "virtex5";
    C_MEM0_BASEADDR                : std_logic_vector     := X"FFFFFFFF";
    C_MEM0_HIGHADDR                : std_logic_vector     := X"00000000"
    -- DO NOT EDIT ABOVE THIS LINE ---------------------
  );
  port
  (
    -- ADD USER PORTS BELOW THIS LINE ------------------
    --USER ports added here    
    R  : out  std_logic;
    G  : out  std_logic;
    B  : out  std_logic;
    HS : out  std_logic;
    VS : out  std_logic;	
    -- ADD USER PORTS ABOVE THIS LINE ------------------

    -- DO NOT EDIT BELOW THIS LINE ---------------------
    -- Bus protocol ports, do not add to or delete
    SPLB_Clk                       : in  std_logic;
    SPLB_Rst                       : in  std_logic;
    PLB_ABus                       : in  std_logic_vector(0 to 31);
    PLB_UABus                      : in  std_logic_vector(0 to 31);
    PLB_PAValid                    : in  std_logic;
    PLB_SAValid                    : in  std_logic;
    PLB_rdPrim                     : in  std_logic;
    PLB_wrPrim                     : in  std_logic;
    PLB_masterID                   : in  std_logic_vector(0 to C_SPLB_MID_WIDTH-1);
    PLB_abort                      : in  std_logic;
    PLB_busLock                    : in  std_logic;
    PLB_RNW                        : in  std_logic;
    PLB_BE                         : in  std_logic_vector(0 to C_SPLB_DWIDTH/8-1);
    PLB_MSize                      : in  std_logic_vector(0 to 1);
    PLB_size                       : in  std_logic_vector(0 to 3);
    PLB_type                       : in  std_logic_vector(0 to 2);
    PLB_lockErr                    : in  std_logic;
    PLB_wrDBus                     : in  std_logic_vector(0 to C_SPLB_DWIDTH-1);
    PLB_wrBurst                    : in  std_logic;
    PLB_rdBurst                    : in  std_logic;
    PLB_wrPendReq                  : in  std_logic;
    PLB_rdPendReq                  : in  std_logic;
    PLB_wrPendPri                  : in  std_logic_vector(0 to 1);
    PLB_rdPendPri                  : in  std_logic_vector(0 to 1);
    PLB_reqPri                     : in  std_logic_vector(0 to 1);
    PLB_TAttribute                 : in  std_logic_vector(0 to 15);
    Sl_addrAck                     : out std_logic;
    Sl_SSize                       : out std_logic_vector(0 to 1);
    Sl_wait                        : out std_logic;
    Sl_rearbitrate                 : out std_logic;
    Sl_wrDAck                      : out std_logic;
    Sl_wrComp                      : out std_logic;
    Sl_wrBTerm                     : out std_logic;
    Sl_rdDBus                      : out std_logic_vector(0 to C_SPLB_DWIDTH-1);
    Sl_rdWdAddr                    : out std_logic_vector(0 to 3);
    Sl_rdDAck                      : out std_logic;
    Sl_rdComp                      : out std_logic;
    Sl_rdBTerm                     : out std_logic;
    Sl_MBusy                       : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MWrErr                      : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MRdErr                      : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MIRQ                        : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1)
    -- DO NOT EDIT ABOVE THIS LINE ---------------------
  );

  attribute SIGIS : string;
  attribute SIGIS of SPLB_Clk      : signal is "CLK";
  attribute SIGIS of SPLB_Rst      : signal is "RST";

end entity vga;

------------------------------------------------------------------------------
-- Architecture section
------------------------------------------------------------------------------

architecture IMP of vga is

  ------------------------------------------
  -- Array of base/high address pairs for each address range
  ------------------------------------------
  constant ZERO_ADDR_PAD                  : std_logic_vector(0 to 31) := (others => '0');

  constant IPIF_ARD_ADDR_RANGE_ARRAY      : SLV64_ARRAY_TYPE     := 
    (
      ZERO_ADDR_PAD &C_MEM0_BASEADDR,    -- user logic memory space 0 base address
      ZERO_ADDR_PAD &C_MEM0_HIGHADDR     -- user logic memory space 0 high address
    );

  ------------------------------------------
  -- Array of desired number of chip enables for each address range
  ------------------------------------------
  constant USER_NUM_MEM                   : integer              := 1;

  constant IPIF_ARD_NUM_CE_ARRAY          : INTEGER_ARRAY_TYPE   := 
    (
      0  => 1                             -- number of ce for user logic memory space 0 (always 1 chip enable)
    );

  ------------------------------------------
  -- Ratio of bus clock to core clock (for use in dual clock systems)
  -- 1 = ratio is 1:1
  -- 2 = ratio is 2:1
  ------------------------------------------
  constant IPIF_BUS2CORE_CLK_RATIO        : integer              := 1;

  ------------------------------------------
  -- Width of the slave data bus (32 only)
  ------------------------------------------
  constant USER_SLV_DWIDTH                : integer              := C_SPLB_NATIVE_DWIDTH;

  constant IPIF_SLV_DWIDTH                : integer              := C_SPLB_NATIVE_DWIDTH;

  ------------------------------------------
  -- Width of the slave address bus (32 only)
  ------------------------------------------
  constant USER_SLV_AWIDTH                : integer              := C_SPLB_AWIDTH;

  ------------------------------------------
  -- Index for CS/CE
  ------------------------------------------
  constant USER_MEM0_CS_INDEX             : integer              := 0;

  constant USER_CS_INDEX                  : integer              := USER_MEM0_CS_INDEX;

  ------------------------------------------
  -- IP Interconnect (IPIC) signal declarations
  ------------------------------------------
  signal ipif_Bus2IP_Clk                : std_logic;
  signal ipif_Bus2IP_Reset              : std_logic;
  signal ipif_IP2Bus_Data               : std_logic_vector(0 to IPIF_SLV_DWIDTH-1);
  signal ipif_IP2Bus_WrAck              : std_logic;
  signal ipif_IP2Bus_RdAck              : std_logic;
  signal ipif_IP2Bus_Error              : std_logic;
  signal ipif_Bus2IP_Addr               : std_logic_vector(0 to C_SPLB_AWIDTH-1);
  signal ipif_Bus2IP_Data               : std_logic_vector(0 to IPIF_SLV_DWIDTH-1);
  signal ipif_Bus2IP_RNW                : std_logic;
  signal ipif_Bus2IP_BE                 : std_logic_vector(0 to IPIF_SLV_DWIDTH/8-1);
  signal ipif_Bus2IP_CS                 : std_logic_vector(0 to ((IPIF_ARD_ADDR_RANGE_ARRAY'length)/2)-1);
  signal ipif_Bus2IP_RdCE               : std_logic_vector(0 to calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1);
  signal ipif_Bus2IP_WrCE               : std_logic_vector(0 to calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1);
  signal user_IP2Bus_Data               : std_logic_vector(0 to USER_SLV_DWIDTH-1);
  signal user_IP2Bus_RdAck              : std_logic;
  signal user_IP2Bus_WrAck              : std_logic;
  signal user_IP2Bus_Error              : std_logic;

  ------------------------------------------
  -- Component declaration for verilog user logic
  ------------------------------------------
  component user_logic is
    generic
    (
      -- ADD USER GENERICS BELOW THIS LINE ---------------
      --USER generics added here
      -- ADD USER GENERICS ABOVE THIS LINE ---------------

      -- DO NOT EDIT BELOW THIS LINE ---------------------
      -- Bus protocol parameters, do not add to or delete
      C_SLV_AWIDTH                   : integer              := 32;
      C_SLV_DWIDTH                   : integer              := 32;
      C_NUM_MEM                      : integer              := 1
      -- DO NOT EDIT ABOVE THIS LINE ---------------------
    );
    port
    (
      -- ADD USER PORTS BELOW THIS LINE ------------------
      --USER ports added here	
      R  : out  std_logic;
      G  : out  std_logic;
      B  : out  std_logic;
      HS : out  std_logic;
      VS : out  std_logic;	
      -- ADD USER PORTS ABOVE THIS LINE ------------------

      -- DO NOT EDIT BELOW THIS LINE ---------------------
      -- Bus protocol ports, do not add to or delete
      Bus2IP_Clk                     : in  std_logic;
      Bus2IP_Reset                   : in  std_logic;
      Bus2IP_Addr                    : in  std_logic_vector(0 to C_SLV_AWIDTH-1);
      Bus2IP_CS                      : in  std_logic_vector(0 to C_NUM_MEM-1);
      Bus2IP_RNW                     : in  std_logic;
      Bus2IP_Data                    : in  std_logic_vector(0 to C_SLV_DWIDTH-1);
      Bus2IP_BE                      : in  std_logic_vector(0 to C_SLV_DWIDTH/8-1);
      IP2Bus_Data                    : out std_logic_vector(0 to C_SLV_DWIDTH-1);
      IP2Bus_RdAck                   : out std_logic;
      IP2Bus_WrAck                   : out std_logic;
      IP2Bus_Error                   : out std_logic
      -- DO NOT EDIT ABOVE THIS LINE ---------------------
    );
  end component user_logic;

begin

  ------------------------------------------
  -- instantiate plbv46_slave_single
  ------------------------------------------
  PLBV46_SLAVE_SINGLE_I : entity plbv46_slave_single_v1_01_a.plbv46_slave_single
    generic map
    (
      C_ARD_ADDR_RANGE_ARRAY         => IPIF_ARD_ADDR_RANGE_ARRAY,
      C_ARD_NUM_CE_ARRAY             => IPIF_ARD_NUM_CE_ARRAY,
      C_SPLB_P2P                     => C_SPLB_P2P,
      C_BUS2CORE_CLK_RATIO           => IPIF_BUS2CORE_CLK_RATIO,
      C_SPLB_MID_WIDTH               => C_SPLB_MID_WIDTH,
      C_SPLB_NUM_MASTERS             => C_SPLB_NUM_MASTERS,
      C_SPLB_AWIDTH                  => C_SPLB_AWIDTH,
      C_SPLB_DWIDTH                  => C_SPLB_DWIDTH,
      C_SIPIF_DWIDTH                 => IPIF_SLV_DWIDTH,
      C_INCLUDE_DPHASE_TIMER         => C_INCLUDE_DPHASE_TIMER,
      C_FAMILY                       => C_FAMILY
    )
    port map
    (
      SPLB_Clk                       => SPLB_Clk,
      SPLB_Rst                       => SPLB_Rst,
      PLB_ABus                       => PLB_ABus,
      PLB_UABus                      => PLB_UABus,
      PLB_PAValid                    => PLB_PAValid,
      PLB_SAValid                    => PLB_SAValid,
      PLB_rdPrim                     => PLB_rdPrim,
      PLB_wrPrim                     => PLB_wrPrim,
      PLB_masterID                   => PLB_masterID,
      PLB_abort                      => PLB_abort,
      PLB_busLock                    => PLB_busLock,
      PLB_RNW                        => PLB_RNW,
      PLB_BE                         => PLB_BE,
      PLB_MSize                      => PLB_MSize,
      PLB_size                       => PLB_size,
      PLB_type                       => PLB_type,
      PLB_lockErr                    => PLB_lockErr,
      PLB_wrDBus                     => PLB_wrDBus,
      PLB_wrBurst                    => PLB_wrBurst,
      PLB_rdBurst                    => PLB_rdBurst,
      PLB_wrPendReq                  => PLB_wrPendReq,
      PLB_rdPendReq                  => PLB_rdPendReq,
      PLB_wrPendPri                  => PLB_wrPendPri,
      PLB_rdPendPri                  => PLB_rdPendPri,
      PLB_reqPri                     => PLB_reqPri,
      PLB_TAttribute                 => PLB_TAttribute,
      Sl_addrAck                     => Sl_addrAck,
      Sl_SSize                       => Sl_SSize,
      Sl_wait                        => Sl_wait,
      Sl_rearbitrate                 => Sl_rearbitrate,
      Sl_wrDAck                      => Sl_wrDAck,
      Sl_wrComp                      => Sl_wrComp,
      Sl_wrBTerm                     => Sl_wrBTerm,
      Sl_rdDBus                      => Sl_rdDBus,
      Sl_rdWdAddr                    => Sl_rdWdAddr,
      Sl_rdDAck                      => Sl_rdDAck,
      Sl_rdComp                      => Sl_rdComp,
      Sl_rdBTerm                     => Sl_rdBTerm,
      Sl_MBusy                       => Sl_MBusy,
      Sl_MWrErr                      => Sl_MWrErr,
      Sl_MRdErr                      => Sl_MRdErr,
      Sl_MIRQ                        => Sl_MIRQ,
      Bus2IP_Clk                     => ipif_Bus2IP_Clk,
      Bus2IP_Reset                   => ipif_Bus2IP_Reset,
      IP2Bus_Data                    => ipif_IP2Bus_Data,
      IP2Bus_WrAck                   => ipif_IP2Bus_WrAck,
      IP2Bus_RdAck                   => ipif_IP2Bus_RdAck,
      IP2Bus_Error                   => ipif_IP2Bus_Error,
      Bus2IP_Addr                    => ipif_Bus2IP_Addr,
      Bus2IP_Data                    => ipif_Bus2IP_Data,
      Bus2IP_RNW                     => ipif_Bus2IP_RNW,
      Bus2IP_BE                      => ipif_Bus2IP_BE,
      Bus2IP_CS                      => ipif_Bus2IP_CS,
      Bus2IP_RdCE                    => ipif_Bus2IP_RdCE,
      Bus2IP_WrCE                    => ipif_Bus2IP_WrCE
    );

  ------------------------------------------
  -- instantiate User Logic
  ------------------------------------------
  USER_LOGIC_I : component user_logic
    generic map
    (
      -- MAP USER GENERICS BELOW THIS LINE ---------------
      --USER generics mapped here
      -- MAP USER GENERICS ABOVE THIS LINE ---------------

      C_SLV_AWIDTH                   => USER_SLV_AWIDTH,
      C_SLV_DWIDTH                   => USER_SLV_DWIDTH,
      C_NUM_MEM                      => USER_NUM_MEM
    )
    port map
    (
      -- MAP USER PORTS BELOW THIS LINE ------------------
      --USER ports mapped here	
      R => R,
      G => G,
      B => B,
      HS=> HS,
      VS=> VS,			
      -- MAP USER PORTS ABOVE THIS LINE ------------------

      Bus2IP_Clk                     => ipif_Bus2IP_Clk,
      Bus2IP_Reset                   => ipif_Bus2IP_Reset,
      Bus2IP_Addr                    => ipif_Bus2IP_Addr,
      Bus2IP_CS                      => ipif_Bus2IP_CS(USER_CS_INDEX to USER_CS_INDEX+USER_NUM_MEM-1),
      Bus2IP_RNW                     => ipif_Bus2IP_RNW,
      Bus2IP_Data                    => ipif_Bus2IP_Data,
      Bus2IP_BE                      => ipif_Bus2IP_BE,
      IP2Bus_Data                    => user_IP2Bus_Data,
      IP2Bus_RdAck                   => user_IP2Bus_RdAck,
      IP2Bus_WrAck                   => user_IP2Bus_WrAck,
      IP2Bus_Error                   => user_IP2Bus_Error
    );

  ------------------------------------------
  -- connect internal signals
  ------------------------------------------
  ipif_IP2Bus_Data <= user_IP2Bus_Data;
  ipif_IP2Bus_WrAck <= user_IP2Bus_WrAck;
  ipif_IP2Bus_RdAck <= user_IP2Bus_RdAck;
  ipif_IP2Bus_Error <= user_IP2Bus_Error;

end IMP;

------------------------------------------------------------------------------
-- vga.vhd - entity/architecture pair
------------------------------------------------------------------------------
-- IMPORTANT:
-- DO NOT MODIFY THIS FILE EXCEPT IN THE DESIGNATED SECTIONS.
--
-- SEARCH FOR --USER TO DETERMINE WHERE CHANGES ARE ALLOWED.
--
-- TYPICALLY, THE ONLY ACCEPTABLE CHANGES INVOLVE ADDING NEW
-- PORTS AND GENERICS THAT GET PASSED THROUGH TO THE INSTANTIATION
-- OF THE USER_LOGIC ENTITY.
------------------------------------------------------------------------------
--
-- ***************************************************************************
-- ** Copyright (c) 1995-2009 Xilinx, Inc.  All rights reserved.            **
-- **                                                                       **
-- ** Xilinx, Inc.                                                          **
-- ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"         **
-- ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND       **
-- ** SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,        **
-- ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,        **
-- ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION           **
-- ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,     **
-- ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE      **
-- ** FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY              **
-- ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE               **
-- ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR        **
-- ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF       **
-- ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS       **
-- ** FOR A PARTICULAR PURPOSE.                                             **
-- **                                                                       **
-- ***************************************************************************
--
------------------------------------------------------------------------------
-- Filename:          vga.vhd
-- Version:           1.00.a
-- Description:       Top level design, instantiates library components and user logic.
-- Date:              Sun Nov 29 13:11:59 2009 (by Create and Import Peripheral Wizard)
-- VHDL Standard:     VHDL'93
------------------------------------------------------------------------------
-- Naming Conventions:
--   active low signals:                    "*_n"
--   clock signals:                         "clk", "clk_div#", "clk_#x"
--   reset signals:                         "rst", "rst_n"
--   generics:                              "C_*"
--   user defined types:                    "*_TYPE"
--   state machine next state:              "*_ns"
--   state machine current state:           "*_cs"
--   combinatorial signals:                 "*_com"
--   pipelined or register delay signals:   "*_d#"
--   counter signals:                       "*cnt*"
--   clock enable signals:                  "*_ce"
--   internal version of output port:       "*_i"
--   device pins:                           "*_pin"
--   ports:                                 "- Names begin with Uppercase"
--   processes:                             "*_PROCESS"
--   component instantiations:              "I_<#|FUNC>"
------------------------------------------------------------------------------

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;

library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
use proc_common_v3_00_a.ipif_pkg.all;

library plbv46_slave_single_v1_01_a;
use plbv46_slave_single_v1_01_a.plbv46_slave_single;

------------------------------------------------------------------------------
-- Entity section
------------------------------------------------------------------------------
-- Definition of Generics:
--   C_SPLB_AWIDTH                -- PLBv46 slave: address bus width
--   C_SPLB_DWIDTH                -- PLBv46 slave: data bus width
--   C_SPLB_NUM_MASTERS           -- PLBv46 slave: Number of masters
--   C_SPLB_MID_WIDTH             -- PLBv46 slave: master ID bus width
--   C_SPLB_NATIVE_DWIDTH         -- PLBv46 slave: internal native data bus width
--   C_SPLB_P2P                   -- PLBv46 slave: point to point interconnect scheme
--   C_SPLB_SUPPORT_BURSTS        -- PLBv46 slave: support bursts
--   C_SPLB_SMALLEST_MASTER       -- PLBv46 slave: width of the smallest master
--   C_SPLB_CLK_PERIOD_PS         -- PLBv46 slave: bus clock in picoseconds
--   C_INCLUDE_DPHASE_TIMER       -- PLBv46 slave: Data Phase Timer configuration; 0 = exclude timer, 1 = include timer
--   C_FAMILY                     -- Xilinx FPGA family
--   C_MEM0_BASEADDR              -- User memory space 0 base address
--   C_MEM0_HIGHADDR              -- User memory space 0 high address
--
-- Definition of Ports:
--   SPLB_Clk                     -- PLB main bus clock
--   SPLB_Rst                     -- PLB main bus reset
--   PLB_ABus                     -- PLB address bus
--   PLB_UABus                    -- PLB upper address bus
--   PLB_PAValid                  -- PLB primary address valid indicator
--   PLB_SAValid                  -- PLB secondary address valid indicator
--   PLB_rdPrim                   -- PLB secondary to primary read request indicator
--   PLB_wrPrim                   -- PLB secondary to primary write request indicator
--   PLB_masterID                 -- PLB current master identifier
--   PLB_abort                    -- PLB abort request indicator
--   PLB_busLock                  -- PLB bus lock
--   PLB_RNW                      -- PLB read/not write
--   PLB_BE                       -- PLB byte enables
--   PLB_MSize                    -- PLB master data bus size
--   PLB_size                     -- PLB transfer size
--   PLB_type                     -- PLB transfer type
--   PLB_lockErr                  -- PLB lock error indicator
--   PLB_wrDBus                   -- PLB write data bus
--   PLB_wrBurst                  -- PLB burst write transfer indicator
--   PLB_rdBurst                  -- PLB burst read transfer indicator
--   PLB_wrPendReq                -- PLB write pending bus request indicator
--   PLB_rdPendReq                -- PLB read pending bus request indicator
--   PLB_wrPendPri                -- PLB write pending request priority
--   PLB_rdPendPri                -- PLB read pending request priority
--   PLB_reqPri                   -- PLB current request priority
--   PLB_TAttribute               -- PLB transfer attribute
--   Sl_addrAck                   -- Slave address acknowledge
--   Sl_SSize                     -- Slave data bus size
--   Sl_wait                      -- Slave wait indicator
--   Sl_rearbitrate               -- Slave re-arbitrate bus indicator
--   Sl_wrDAck                    -- Slave write data acknowledge
--   Sl_wrComp                    -- Slave write transfer complete indicator
--   Sl_wrBTerm                   -- Slave terminate write burst transfer
--   Sl_rdDBus                    -- Slave read data bus
--   Sl_rdWdAddr                  -- Slave read word address
--   Sl_rdDAck                    -- Slave read data acknowledge
--   Sl_rdComp                    -- Slave read transfer complete indicator
--   Sl_rdBTerm                   -- Slave terminate read burst transfer
--   Sl_MBusy                     -- Slave busy indicator
--   Sl_MWrErr                    -- Slave write error indicator
--   Sl_MRdErr                    -- Slave read error indicator
--   Sl_MIRQ                      -- Slave interrupt indicator
------------------------------------------------------------------------------

entity vga is
  generic
  (
    -- ADD USER GENERICS BELOW THIS LINE ---------------
    --USER generics added here
    -- ADD USER GENERICS ABOVE THIS LINE ---------------

    -- DO NOT EDIT BELOW THIS LINE ---------------------
    -- Bus protocol parameters, do not add to or delete
    C_SPLB_AWIDTH                  : integer              := 32;
    C_SPLB_DWIDTH                  : integer              := 128;
    C_SPLB_NUM_MASTERS             : integer              := 8;
    C_SPLB_MID_WIDTH               : integer              := 3;
    C_SPLB_NATIVE_DWIDTH           : integer              := 32;
    C_SPLB_P2P                     : integer              := 0;
    C_SPLB_SUPPORT_BURSTS          : integer              := 0;
    C_SPLB_SMALLEST_MASTER         : integer              := 32;
    C_SPLB_CLK_PERIOD_PS           : integer              := 10000;
    C_INCLUDE_DPHASE_TIMER         : integer              := 0;
    C_FAMILY                       : string               := "virtex5";
    C_MEM0_BASEADDR                : std_logic_vector     := X"FFFFFFFF";
    C_MEM0_HIGHADDR                : std_logic_vector     := X"00000000"
    -- DO NOT EDIT ABOVE THIS LINE ---------------------
  );
  port
  (
    -- ADD USER PORTS BELOW THIS LINE ------------------
    --USER ports added here





    -- ADD USER PORTS ABOVE THIS LINE ------------------

    -- DO NOT EDIT BELOW THIS LINE ---------------------
    -- Bus protocol ports, do not add to or delete
    SPLB_Clk                       : in  std_logic;
    SPLB_Rst                       : in  std_logic;
    PLB_ABus                       : in  std_logic_vector(0 to 31);
    PLB_UABus                      : in  std_logic_vector(0 to 31);
    PLB_PAValid                    : in  std_logic;
    PLB_SAValid                    : in  std_logic;
    PLB_rdPrim                     : in  std_logic;
    PLB_wrPrim                     : in  std_logic;
    PLB_masterID                   : in  std_logic_vector(0 to C_SPLB_MID_WIDTH-1);
    PLB_abort                      : in  std_logic;
    PLB_busLock                    : in  std_logic;
    PLB_RNW                        : in  std_logic;
    PLB_BE                         : in  std_logic_vector(0 to C_SPLB_DWIDTH/8-1);
    PLB_MSize                      : in  std_logic_vector(0 to 1);
    PLB_size                       : in  std_logic_vector(0 to 3);
    PLB_type                       : in  std_logic_vector(0 to 2);
    PLB_lockErr                    : in  std_logic;
    PLB_wrDBus                     : in  std_logic_vector(0 to C_SPLB_DWIDTH-1);
    PLB_wrBurst                    : in  std_logic;
    PLB_rdBurst                    : in  std_logic;
    PLB_wrPendReq                  : in  std_logic;
    PLB_rdPendReq                  : in  std_logic;
    PLB_wrPendPri                  : in  std_logic_vector(0 to 1);
    PLB_rdPendPri                  : in  std_logic_vector(0 to 1);
    PLB_reqPri                     : in  std_logic_vector(0 to 1);
    PLB_TAttribute                 : in  std_logic_vector(0 to 15);
    Sl_addrAck                     : out std_logic;
    Sl_SSize                       : out std_logic_vector(0 to 1);
    Sl_wait                        : out std_logic;
    Sl_rearbitrate                 : out std_logic;
    Sl_wrDAck                      : out std_logic;
    Sl_wrComp                      : out std_logic;
    Sl_wrBTerm                     : out std_logic;
    Sl_rdDBus                      : out std_logic_vector(0 to C_SPLB_DWIDTH-1);
    Sl_rdWdAddr                    : out std_logic_vector(0 to 3);
    Sl_rdDAck                      : out std_logic;
    Sl_rdComp                      : out std_logic;
    Sl_rdBTerm                     : out std_logic;
    Sl_MBusy                       : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MWrErr                      : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MRdErr                      : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1);
    Sl_MIRQ                        : out std_logic_vector(0 to C_SPLB_NUM_MASTERS-1)
    -- DO NOT EDIT ABOVE THIS LINE ---------------------
  );

  attribute SIGIS : string;
  attribute SIGIS of SPLB_Clk      : signal is "CLK";
  attribute SIGIS of SPLB_Rst      : signal is "RST";

end entity vga;

------------------------------------------------------------------------------
-- Architecture section
------------------------------------------------------------------------------

architecture IMP of vga is

  ------------------------------------------
  -- Array of base/high address pairs for each address range
  ------------------------------------------
  constant ZERO_ADDR_PAD                  : std_logic_vector(0 to 31) := (others => '0');

  constant IPIF_ARD_ADDR_RANGE_ARRAY      : SLV64_ARRAY_TYPE     := 
    (
      ZERO_ADDR_PAD &C_MEM0_BASEADDR,    -- user logic memory space 0 base address
      ZERO_ADDR_PAD &C_MEM0_HIGHADDR     -- user logic memory space 0 high address
    );

  ------------------------------------------
  -- Array of desired number of chip enables for each address range
  ------------------------------------------
  constant USER_NUM_MEM                   : integer              := 1;

  constant IPIF_ARD_NUM_CE_ARRAY          : INTEGER_ARRAY_TYPE   := 
    (
      0  => 1                             -- number of ce for user logic memory space 0 (always 1 chip enable)
    );

  ------------------------------------------
  -- Ratio of bus clock to core clock (for use in dual clock systems)
  -- 1 = ratio is 1:1
  -- 2 = ratio is 2:1
  ------------------------------------------
  constant IPIF_BUS2CORE_CLK_RATIO        : integer              := 1;

  ------------------------------------------
  -- Width of the slave data bus (32 only)
  ------------------------------------------
  constant USER_SLV_DWIDTH                : integer              := C_SPLB_NATIVE_DWIDTH;

  constant IPIF_SLV_DWIDTH                : integer              := C_SPLB_NATIVE_DWIDTH;

  ------------------------------------------
  -- Width of the slave address bus (32 only)
  ------------------------------------------
  constant USER_SLV_AWIDTH                : integer              := C_SPLB_AWIDTH;

  ------------------------------------------
  -- Index for CS/CE
  ------------------------------------------
  constant USER_MEM0_CS_INDEX             : integer              := 0;

  constant USER_CS_INDEX                  : integer              := USER_MEM0_CS_INDEX;

  ------------------------------------------
  -- IP Interconnect (IPIC) signal declarations
  ------------------------------------------
  signal ipif_Bus2IP_Clk                : std_logic;
  signal ipif_Bus2IP_Reset              : std_logic;
  signal ipif_IP2Bus_Data               : std_logic_vector(0 to IPIF_SLV_DWIDTH-1);
  signal ipif_IP2Bus_WrAck              : std_logic;
  signal ipif_IP2Bus_RdAck              : std_logic;
  signal ipif_IP2Bus_Error              : std_logic;
  signal ipif_Bus2IP_Addr               : std_logic_vector(0 to C_SPLB_AWIDTH-1);
  signal ipif_Bus2IP_Data               : std_logic_vector(0 to IPIF_SLV_DWIDTH-1);
  signal ipif_Bus2IP_RNW                : std_logic;
  signal ipif_Bus2IP_BE                 : std_logic_vector(0 to IPIF_SLV_DWIDTH/8-1);
  signal ipif_Bus2IP_CS                 : std_logic_vector(0 to ((IPIF_ARD_ADDR_RANGE_ARRAY'length)/2)-1);
  signal ipif_Bus2IP_RdCE               : std_logic_vector(0 to calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1);
  signal ipif_Bus2IP_WrCE               : std_logic_vector(0 to calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1);
  signal user_IP2Bus_Data               : std_logic_vector(0 to USER_SLV_DWIDTH-1);
  signal user_IP2Bus_RdAck              : std_logic;
  signal user_IP2Bus_WrAck              : std_logic;
  signal user_IP2Bus_Error              : std_logic;

  ------------------------------------------
  -- Component declaration for verilog user logic
  ------------------------------------------
  component user_logic is
    generic
    (
      -- ADD USER GENERICS BELOW THIS LINE ---------------
      --USER generics added here
      -- ADD USER GENERICS ABOVE THIS LINE ---------------

      -- DO NOT EDIT BELOW THIS LINE ---------------------
      -- Bus protocol parameters, do not add to or delete
      C_SLV_AWIDTH                   : integer              := 32;
      C_SLV_DWIDTH                   : integer              := 32;
      C_NUM_MEM                      : integer              := 1
      -- DO NOT EDIT ABOVE THIS LINE ---------------------
    );
    port
    (
      -- ADD USER PORTS BELOW THIS LINE ------------------
      --USER ports added here





      -- ADD USER PORTS ABOVE THIS LINE ------------------

      -- DO NOT EDIT BELOW THIS LINE ---------------------
      -- Bus protocol ports, do not add to or delete
      Bus2IP_Clk                     : in  std_logic;
      Bus2IP_Reset                   : in  std_logic;
      Bus2IP_Addr                    : in  std_logic_vector(0 to C_SLV_AWIDTH-1);
      Bus2IP_CS                      : in  std_logic_vector(0 to C_NUM_MEM-1);
      Bus2IP_RNW                     : in  std_logic;
      Bus2IP_Data                    : in  std_logic_vector(0 to C_SLV_DWIDTH-1);
      Bus2IP_BE                      : in  std_logic_vector(0 to C_SLV_DWIDTH/8-1);
      IP2Bus_Data                    : out std_logic_vector(0 to C_SLV_DWIDTH-1);
      IP2Bus_RdAck                   : out std_logic;
      IP2Bus_WrAck                   : out std_logic;
      IP2Bus_Error                   : out std_logic
      -- DO NOT EDIT ABOVE THIS LINE ---------------------
    );
  end component user_logic;

begin

  ------------------------------------------
  -- instantiate plbv46_slave_single
  ------------------------------------------
  PLBV46_SLAVE_SINGLE_I : entity plbv46_slave_single_v1_01_a.plbv46_slave_single
    generic map
    (
      C_ARD_ADDR_RANGE_ARRAY         => IPIF_ARD_ADDR_RANGE_ARRAY,
      C_ARD_NUM_CE_ARRAY             => IPIF_ARD_NUM_CE_ARRAY,
      C_SPLB_P2P                     => C_SPLB_P2P,
      C_BUS2CORE_CLK_RATIO           => IPIF_BUS2CORE_CLK_RATIO,
      C_SPLB_MID_WIDTH               => C_SPLB_MID_WIDTH,
      C_SPLB_NUM_MASTERS             => C_SPLB_NUM_MASTERS,
      C_SPLB_AWIDTH                  => C_SPLB_AWIDTH,
      C_SPLB_DWIDTH                  => C_SPLB_DWIDTH,
      C_SIPIF_DWIDTH                 => IPIF_SLV_DWIDTH,
      C_INCLUDE_DPHASE_TIMER         => C_INCLUDE_DPHASE_TIMER,
      C_FAMILY                       => C_FAMILY
    )
    port map
    (
      SPLB_Clk                       => SPLB_Clk,
      SPLB_Rst                       => SPLB_Rst,
      PLB_ABus                       => PLB_ABus,
      PLB_UABus                      => PLB_UABus,
      PLB_PAValid                    => PLB_PAValid,
      PLB_SAValid                    => PLB_SAValid,
      PLB_rdPrim                     => PLB_rdPrim,
      PLB_wrPrim                     => PLB_wrPrim,
      PLB_masterID                   => PLB_masterID,
      PLB_abort                      => PLB_abort,
      PLB_busLock                    => PLB_busLock,
      PLB_RNW                        => PLB_RNW,
      PLB_BE                         => PLB_BE,
      PLB_MSize                      => PLB_MSize,
      PLB_size                       => PLB_size,
      PLB_type                       => PLB_type,
      PLB_lockErr                    => PLB_lockErr,
      PLB_wrDBus                     => PLB_wrDBus,
      PLB_wrBurst                    => PLB_wrBurst,
      PLB_rdBurst                    => PLB_rdBurst,
      PLB_wrPendReq                  => PLB_wrPendReq,
      PLB_rdPendReq                  => PLB_rdPendReq,
      PLB_wrPendPri                  => PLB_wrPendPri,
      PLB_rdPendPri                  => PLB_rdPendPri,
      PLB_reqPri                     => PLB_reqPri,
      PLB_TAttribute                 => PLB_TAttribute,
      Sl_addrAck                     => Sl_addrAck,
      Sl_SSize                       => Sl_SSize,
      Sl_wait                        => Sl_wait,
      Sl_rearbitrate                 => Sl_rearbitrate,
      Sl_wrDAck                      => Sl_wrDAck,
      Sl_wrComp                      => Sl_wrComp,
      Sl_wrBTerm                     => Sl_wrBTerm,
      Sl_rdDBus                      => Sl_rdDBus,
      Sl_rdWdAddr                    => Sl_rdWdAddr,
      Sl_rdDAck                      => Sl_rdDAck,
      Sl_rdComp                      => Sl_rdComp,
      Sl_rdBTerm                     => Sl_rdBTerm,
      Sl_MBusy                       => Sl_MBusy,
      Sl_MWrErr                      => Sl_MWrErr,
      Sl_MRdErr                      => Sl_MRdErr,
      Sl_MIRQ                        => Sl_MIRQ,
      Bus2IP_Clk                     => ipif_Bus2IP_Clk,
      Bus2IP_Reset                   => ipif_Bus2IP_Reset,
      IP2Bus_Data                    => ipif_IP2Bus_Data,
      IP2Bus_WrAck                   => ipif_IP2Bus_WrAck,
      IP2Bus_RdAck                   => ipif_IP2Bus_RdAck,
      IP2Bus_Error                   => ipif_IP2Bus_Error,
      Bus2IP_Addr                    => ipif_Bus2IP_Addr,
      Bus2IP_Data                    => ipif_Bus2IP_Data,
      Bus2IP_RNW                     => ipif_Bus2IP_RNW,
      Bus2IP_BE                      => ipif_Bus2IP_BE,
      Bus2IP_CS                      => ipif_Bus2IP_CS,
      Bus2IP_RdCE                    => ipif_Bus2IP_RdCE,
      Bus2IP_WrCE                    => ipif_Bus2IP_WrCE
    );

  ------------------------------------------
  -- instantiate User Logic
  ------------------------------------------
  USER_LOGIC_I : component user_logic
    generic map
    (
      -- MAP USER GENERICS BELOW THIS LINE ---------------
      --USER generics mapped here
      -- MAP USER GENERICS ABOVE THIS LINE ---------------

      C_SLV_AWIDTH                   => USER_SLV_AWIDTH,
      C_SLV_DWIDTH                   => USER_SLV_DWIDTH,
      C_NUM_MEM                      => USER_NUM_MEM
    )
    port map
    (
      -- MAP USER PORTS BELOW THIS LINE ------------------
      --USER ports mapped here





      -- MAP USER PORTS ABOVE THIS LINE ------------------

      Bus2IP_Clk                     => ipif_Bus2IP_Clk,
      Bus2IP_Reset                   => ipif_Bus2IP_Reset,
      Bus2IP_Addr                    => ipif_Bus2IP_Addr,
      Bus2IP_CS                      => ipif_Bus2IP_CS(USER_CS_INDEX to USER_CS_INDEX+USER_NUM_MEM-1),
      Bus2IP_RNW                     => ipif_Bus2IP_RNW,
      Bus2IP_Data                    => ipif_Bus2IP_Data,
      Bus2IP_BE                      => ipif_Bus2IP_BE,
      IP2Bus_Data                    => user_IP2Bus_Data,
      IP2Bus_RdAck                   => user_IP2Bus_RdAck,
      IP2Bus_WrAck                   => user_IP2Bus_WrAck,
      IP2Bus_Error                   => user_IP2Bus_Error
    );

  ------------------------------------------
  -- connect internal signals
  ------------------------------------------
  ipif_IP2Bus_Data <= user_IP2Bus_Data;
  ipif_IP2Bus_WrAck <= user_IP2Bus_WrAck;
  ipif_IP2Bus_RdAck <= user_IP2Bus_RdAck;
  ipif_IP2Bus_Error <= user_IP2Bus_Error;

end IMP;
次に"vga.vhd"から呼び出される下位階層である "user_logic.v" ファイルにVGA コントローラIPの本体を記述します。"user_logic.v" は Verilog HDL というハー ドウェア記述言語で記載されています。 
$ cd ../verilog
$ gedit user_logic.v
これを以下のように変更していきます。
変更後 変更前 
//----------------------------------------------------------------------------
// user_logic.vhd - module
//----------------------------------------------------------------------------
//
// ***************************************************************************
// ** Copyright (c) 1995-2009 Xilinx, Inc.  All rights reserved.            **
// **                                                                       **
// ** Xilinx, Inc.                                                          **
// ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"         **
// ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND       **
// ** SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,        **
// ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,        **
// ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION           **
// ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,     **
// ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE      **
// ** FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY              **
// ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE               **
// ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR        **
// ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF       **
// ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS       **
// ** FOR A PARTICULAR PURPOSE.                                             **
// **                                                                       **
// ***************************************************************************
//
//----------------------------------------------------------------------------
// Filename:          user_logic.vhd
// Version:           1.00.a
// Description:       User logic module.
// Date:              Sun Nov 29 13:11:59 2009 (by Create and Import Peripheral Wizard)
// Verilog Standard:  Verilog-2001
//----------------------------------------------------------------------------
// Naming Conventions:
//   active low signals:                    "*_n"
//   clock signals:                         "clk", "clk_div#", "clk_#x"
//   reset signals:                         "rst", "rst_n"
//   generics:                              "C_*"
//   user defined types:                    "*_TYPE"
//   state machine next state:              "*_ns"
//   state machine current state:           "*_cs"
//   combinatorial signals:                 "*_com"
//   pipelined or register delay signals:   "*_d#"
//   counter signals:                       "*cnt*"
//   clock enable signals:                  "*_ce"
//   internal version of output port:       "*_i"
//   device pins:                           "*_pin"
//   ports:                                 "- Names begin with Uppercase"
//   processes:                             "*_PROCESS"
//   component instantiations:              "I_<#|FUNC>"
//----------------------------------------------------------------------------

`define HMAX 100 // H total dots
`define HSIZ  80 // H Size
`define HSP   84 // H Sync. Pos.
`define HSL   12 // H Sync. Len.
`define HCR    8 // H dots per Char.
`define VMAX  28 // V total Line
`define VSIZ  25 // V Size
`define VSP   26 // V Sync. Pos.
`define VSL    1 // V Sync. Line
`define VCR   19 // V lines per Char.


module user_logic
(
  // -- ADD USER PORTS BELOW THIS LINE ---------------
  // --USER ports added here	
  R, G, B, HS, VS,		
  // -- ADD USER PORTS ABOVE THIS LINE ---------------

  // -- DO NOT EDIT BELOW THIS LINE ------------------
  // -- Bus protocol ports, do not add to or delete 
  Bus2IP_Clk,                     // Bus to IP clock
  Bus2IP_Reset,                   // Bus to IP reset
  Bus2IP_Addr,                    // Bus to IP address bus
  Bus2IP_CS,                      // Bus to IP chip select for user logic memory selection
  Bus2IP_RNW,                     // Bus to IP read/not write
  Bus2IP_Data,                    // Bus to IP data bus
  Bus2IP_BE,                      // Bus to IP byte enables
  IP2Bus_Data,                    // IP to Bus data bus
  IP2Bus_RdAck,                   // IP to Bus read transfer acknowledgement
  IP2Bus_WrAck,                   // IP to Bus write transfer acknowledgement
  IP2Bus_Error                    // IP to Bus error response
  // -- DO NOT EDIT ABOVE THIS LINE ------------------
); // user_logic

// -- ADD USER PARAMETERS BELOW THIS LINE ------------
// --USER parameters added here 
// -- ADD USER PARAMETERS ABOVE THIS LINE ------------

// -- DO NOT EDIT BELOW THIS LINE --------------------
// -- Bus protocol parameters, do not add to or delete
parameter C_SLV_AWIDTH                   = 32;
parameter C_SLV_DWIDTH                   = 32;
parameter C_NUM_MEM                      = 1;
// -- DO NOT EDIT ABOVE THIS LINE --------------------

// -- ADD USER PORTS BELOW THIS LINE -----------------
// --USER ports added here	
output R, G, B, HS, VS;		
// -- ADD USER PORTS ABOVE THIS LINE -----------------

// -- DO NOT EDIT BELOW THIS LINE --------------------
// -- Bus protocol ports, do not add to or delete
input                                     Bus2IP_Clk;
input                                     Bus2IP_Reset;
input      [0 : C_SLV_AWIDTH-1]           Bus2IP_Addr;
input      [0 : C_NUM_MEM-1]              Bus2IP_CS;
input                                     Bus2IP_RNW;
input      [0 : C_SLV_DWIDTH-1]           Bus2IP_Data;
input      [0 : C_SLV_DWIDTH/8-1]         Bus2IP_BE;
output     [0 : C_SLV_DWIDTH-1]           IP2Bus_Data;
output                                    IP2Bus_RdAck;
output                                    IP2Bus_WrAck;
output                                    IP2Bus_Error;
// -- DO NOT EDIT ABOVE THIS LINE --------------------

//----------------------------------------------------------------------------
// Implementation
//----------------------------------------------------------------------------

  // --USER nets declarations added here, as needed for user logic
  
  reg   [0:7]  VRAM[0:2047];
  reg   [0:7]  CGROM[0:4095];

  initial
    begin
      $readmemh( "MB_VRAM.mem", VRAM );
      $readmemh( "font256.mem", CGROM );
    end

  reg    [6:0] HCNT;  // H Counter 0-99
  reg    [4:0] VCNT;  // V Counter 0-27
  reg    [4:0] RCNT;  // R Counter 0-18

  wire  CE25, CE8;
  reg  [3:0] CNT;

  wire [0:10] VADR;// VideoRAM Address

  reg  [0:7]  CCOD;// Charactor Code
  wire [0:11] CGADR;// CGROM Address
  wire [0:7]  CGDATA;// Charactor Raster Data

  reg  [0:7]  SR;// Shift Register
  
  // --USER logic implementation added here
  
  always @( posedge Bus2IP_Clk )
    if( Bus2IP_CS[0] & !Bus2IP_RNW  )
      VRAM[ Bus2IP_Addr[0:C_SLV_AWIDTH-3] ] = Bus2IP_Data[24:31];

  always @( posedge Bus2IP_Clk )
    if( Bus2IP_Reset ) CNT <= 0; else
                       CNT <= CNT + 1;

  assign CE25 =  CNT[0];     // 25.000MHz 1/2  for dot clock
  assign CE8  = &CNT[3:0];   //  3.125MHz 1/16 for charactor clock
     
  assign VADR = VCNT * `HSIZ + HCNT;

  // Counter
  always @( posedge Bus2IP_Clk )
    if( CE8 )
      CCOD <= VRAM[VADR];
       
 // Counter
 always @( posedge Bus2IP_Clk )
   begin
     if( Bus2IP_Reset ) begin HCNT<=0; RCNT<=0; VCNT<=0; end
     if( CE8 )
       begin
         if( HCNT == `HMAX-1 )
           begin
             HCNT <= 0;
             if( RCNT == `VCR-1 )
               begin
                 RCNT <= 0;
                 if( VCNT == `VMAX-1 ) VCNT <= 0;
                 else                  VCNT <= VCNT + 1;
               end
             else
               RCNT <= RCNT + 1;
           end
         else
           HCNT <= HCNT + 1;
       end
    end


  //Sync
  assign HS = ~( HCNT >= `HSP & HCNT < (`HSP + `HSL) );
  assign VS = ~( VCNT >= `VSP & VCNT < (`VSP + `VSL) );

  assign CGADR = { CCOD, RCNT[3:0] };
  assign CGDATA= CGROM[ CGADR ];

  always @( posedge Bus2IP_Clk )
    begin
      if ( Bus2IP_Reset ) SR <= 0;      else
      if ( CE8  ) SR <= CGDATA;         else
      if ( CE25 ) SR <= { SR[1:7], 1'b0 };
    end
  
  assign { R, G, B } = ( ( 1 < HCNT & HCNT < `HSIZ+2 ) 
                 & ( VCNT < `VSIZ ) & SR[0] & ( RCNT < 16 ) ) ? 3'b111 : 3'b000;
  
  // ------------------------------------------------------------
  // Example code to drive IP to Bus signals
  // ------------------------------------------------------------

  assign IP2Bus_Data = { 24'h00_0000, VRAM[Bus2IP_Addr[0:C_SLV_AWIDTH-3] ]  }; 
  assign IP2Bus_WrAck   = Bus2IP_CS[0] & !Bus2IP_RNW;
  assign IP2Bus_RdAck   = Bus2IP_CS[0] &  Bus2IP_RNW;
  assign IP2Bus_Error   = 0;

endmodule

//----------------------------------------------------------------------------
// user_logic.vhd - module
//----------------------------------------------------------------------------
//
// ***************************************************************************
// ** Copyright (c) 1995-2009 Xilinx, Inc.  All rights reserved.            **
// **                                                                       **
// ** Xilinx, Inc.                                                          **
// ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"         **
// ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND       **
// ** SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,        **
// ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,        **
// ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION           **
// ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,     **
// ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE      **
// ** FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY              **
// ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE               **
// ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR        **
// ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF       **
// ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS       **
// ** FOR A PARTICULAR PURPOSE.                                             **
// **                                                                       **
// ***************************************************************************
//
//----------------------------------------------------------------------------
// Filename:          user_logic.vhd
// Version:           1.00.a
// Description:       User logic module.
// Date:              Sun Nov 29 13:11:59 2009 (by Create and Import Peripheral Wizard)
// Verilog Standard:  Verilog-2001
//----------------------------------------------------------------------------
// Naming Conventions:
//   active low signals:                    "*_n"
//   clock signals:                         "clk", "clk_div#", "clk_#x"
//   reset signals:                         "rst", "rst_n"
//   generics:                              "C_*"
//   user defined types:                    "*_TYPE"
//   state machine next state:              "*_ns"
//   state machine current state:           "*_cs"
//   combinatorial signals:                 "*_com"
//   pipelined or register delay signals:   "*_d#"
//   counter signals:                       "*cnt*"
//   clock enable signals:                  "*_ce"
//   internal version of output port:       "*_i"
//   device pins:                           "*_pin"
//   ports:                                 "- Names begin with Uppercase"
//   processes:                             "*_PROCESS"
//   component instantiations:              "I_<#|FUNC>"
//----------------------------------------------------------------------------














module user_logic
(
  // -- ADD USER PORTS BELOW THIS LINE ---------------
  // --USER ports added here 

  // -- ADD USER PORTS ABOVE THIS LINE ---------------

  // -- DO NOT EDIT BELOW THIS LINE ------------------
  // -- Bus protocol ports, do not add to or delete 
  Bus2IP_Clk,                     // Bus to IP clock
  Bus2IP_Reset,                   // Bus to IP reset
  Bus2IP_Addr,                    // Bus to IP address bus
  Bus2IP_CS,                      // Bus to IP chip select for user logic memory selection
  Bus2IP_RNW,                     // Bus to IP read/not write
  Bus2IP_Data,                    // Bus to IP data bus
  Bus2IP_BE,                      // Bus to IP byte enables
  IP2Bus_Data,                    // IP to Bus data bus
  IP2Bus_RdAck,                   // IP to Bus read transfer acknowledgement
  IP2Bus_WrAck,                   // IP to Bus write transfer acknowledgement
  IP2Bus_Error                    // IP to Bus error response
  // -- DO NOT EDIT ABOVE THIS LINE ------------------
); // user_logic

// -- ADD USER PARAMETERS BELOW THIS LINE ------------
// --USER parameters added here 
// -- ADD USER PARAMETERS ABOVE THIS LINE ------------

// -- DO NOT EDIT BELOW THIS LINE --------------------
// -- Bus protocol parameters, do not add to or delete
parameter C_SLV_AWIDTH                   = 32;
parameter C_SLV_DWIDTH                   = 32;
parameter C_NUM_MEM                      = 1;
// -- DO NOT EDIT ABOVE THIS LINE --------------------

// -- ADD USER PORTS BELOW THIS LINE -----------------
// --USER ports added here 

// -- ADD USER PORTS ABOVE THIS LINE -----------------

// -- DO NOT EDIT BELOW THIS LINE --------------------
// -- Bus protocol ports, do not add to or delete
input                                     Bus2IP_Clk;
input                                     Bus2IP_Reset;
input      [0 : C_SLV_AWIDTH-1]           Bus2IP_Addr;
input      [0 : C_NUM_MEM-1]              Bus2IP_CS;
input                                     Bus2IP_RNW;
input      [0 : C_SLV_DWIDTH-1]           Bus2IP_Data;
input      [0 : C_SLV_DWIDTH/8-1]         Bus2IP_BE;
output     [0 : C_SLV_DWIDTH-1]           IP2Bus_Data;
output                                    IP2Bus_RdAck;
output                                    IP2Bus_WrAck;
output                                    IP2Bus_Error;
// -- DO NOT EDIT ABOVE THIS LINE --------------------

//----------------------------------------------------------------------------
// Implementation
//----------------------------------------------------------------------------

  // --USER nets declarations added here, as needed for user logic























  // --USER logic implementation added here





























































  // ------------------------------------------------------------
  // Example code to drive IP to Bus signals
  // ------------------------------------------------------------

  assign IP2Bus_Data    = 0;
  assign IP2Bus_WrAck   = Bus2IP_WrCE[0];
  assign IP2Bus_RdAck   = Bus2IP_RdCE[0];
  assign IP2Bus_Error   = 0;

endmodule
"user_logic.v" から、VGAコントローラ内にある2つのメモリを初期化するため のファイルを読み込む必要があります。 以下からファイルを取り出し、"pcores/vga_v1_00_a/hdl/verilog" ディレクト リ内にコピーしておきます。

MB_VRAM.mem (ビデオ用メモリの初期化ファイル)
font256.mem (このフォントファイルは、X11用フォントである font-bitstream-75dpi-1.0.0.tar.gz 内の "9x18.bdf" から作成してい る。)

次に、ビデオ表示用に、R, G, B, HS, VS の出力端子を追加しましたので、その情報を mpd というファイルに追加する必要があります。以下のコマンドにより、情報を追加します。 
$ cd ../../data/
$ gedit vga_v2_1_0.mpd
"## Ports" 行の下に以下の情報を追加します。 
## Ports
PORT R = "", DIR = O
PORT G = "", DIR = O
PORT B = "", DIR = O
PORT HS = "", DIR = O
PORT VS = "", DIR = O
これで VGA コントローラの記述が終了です。
これまでの変更を有効にするために、メニューの "Project" -> "Rescan User Repositories" を実行しておきます。
次は、 VGAコントローラIPの取り付け です。
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