vga/ps/2: ip-core hinzugefuegt

[hwmod.git] / src / textmode_vga / video_memory.vhd

diff --git a/src/textmode_vga/video_memory.vhd b/src/textmode_vga/video_memory.vhd
new file mode 100644 (file)
index 0000000..314a74a
--- /dev/null
+++ b/src/textmode_vga/video_memory.vhd
@@ -0,0 +1,34 @@
+-------------------------------------------------------------------------\r
+--\r
+-- Filename: video_memory.vhd\r
+-- =========\r
+--\r
+-- Short Description:\r
+-- ==================\r
+--   Video memory entity declaraton\r
+--\r
+-------------------------------------------------------------------------\r
+\r
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity video_memory is
+  generic
+  (
+    DATA_WIDTH     : integer;
+    ROW_ADDR_WIDTH : integer;
+    COL_ADDR_WIDTH : integer
+  );
+  port
+  (
+    vga_clk : in  std_logic;    
+    vga_row_address    : in  std_logic_vector(ROW_ADDR_WIDTH - 1 downto 0);
+    vga_col_address    : in  std_logic_vector(COL_ADDR_WIDTH - 1 downto 0);
+    vga_data           : out std_logic_vector(DATA_WIDTH - 1 downto 0);
+    sm_row_address  : in  std_logic_vector(ROW_ADDR_WIDTH - 1 downto 0);
+    sm_col_address  : in  std_logic_vector(COL_ADDR_WIDTH - 1 downto 0);
+    sm_data         : in  std_logic_vector(DATA_WIDTH - 1 downto 0);
+    sm_wr           : in  std_logic;
+    sm_scroll_address     : in  std_logic_vector(ROW_ADDR_WIDTH - 1 downto 0)
+  );
+end entity video_memory;