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https://opencores.org/ocsvn/System09/System09/trunk
[/] [System09/] [trunk/] [rtl/] [VHDL/] [vdu8.vhd] - Diff between revs 99 and 118
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| Rev 99 |
Rev 118 |
| Line 13... |
Line 13... |
-- Character attribute bita for foreground and backgrond colour
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-- Character attribute bita for foreground and backgrond colour
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-- 1 bit for each Blue Green and Red signal
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-- 1 bit for each Blue Green and Red signal
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-- Supports 2 x 8 chunky graphics character mode.
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-- Supports 2 x 8 chunky graphics character mode.
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-- Uses Generic arguments for setting the video synchronization timing.
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-- Uses Generic arguments for setting the video synchronization timing.
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--
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--
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-- Dependencies : ieee.Std_Logic_1164
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-- Dependencies : ieee.std_logic_1164
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-- ieee.std_logic_unsigned
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-- ieee.std_logic_arith
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-- ieee.numeric_std
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-- ieee.numeric_std
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--
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--
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-- Uses : ram_2k (ram2k_b16.vhd) 2KByte Character & Attribute buffer
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-- Uses : ram_2k (ram2k_b16.vhd) 2KByte Character & Attribute buffer
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-- char_rom (char_rom2k_b16.vhd) 2KByte Character Generator ROM
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-- char_rom (char_rom2k_b16.vhd) 2KByte Character Generator ROM
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--
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--
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| Line 131... |
Line 129... |
--
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--
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Library IEEE;
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Library IEEE;
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use IEEE.std_logic_1164.all;
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use IEEE.std_logic_1164.all;
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use IEEE.numeric_std.all;
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use IEEE.numeric_std.all;
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Library unisim;
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--Library unisim;
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use unisim.vcomponents.all;
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-- use unisim.vcomponents.all;
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Entity vdu8 is
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Entity vdu8 is
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generic(
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generic(
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VGA_CLK_FREQ : integer := 25000000; -- HZ
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VGA_CLK_FREQ : integer := 25000000; -- HZ
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VGA_HOR_CHARS : integer := 80; -- CHARACTERS 25.6us
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VGA_HOR_CHARS : integer := 80; -- CHARACTERS 25.6us
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