Subversion Repositories z80soc

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-- This design is part of:
-- Z80SoC (Z80 System on Chip)
-- Ronivon Candido Costa
-- ronivon.costa@gmail.com
--

library ieee;
use ieee.std_logic_1164.all;

package z80soc_pack is

        constant Z80SOC_Arch_value      : std_logic_vector(2 downto 0) := "010"; -- 0 = DE1, 1 = S3E, 2 = DE2

        -- Generic constrainsts
        constant vid_cols                               : integer := 80; -- video number of columns
        constant vid_lines                      : integer := 60; -- video number of lines
        constant pixelsxchar                    : integer := 1;
        constant Z80SOC_Arch_addr       : std_logic_vector(15 downto 0) := x"57DF";     
        constant KEYPRESS_addr          : std_logic_vector(15 downto 0) := x"57DE";
        constant LCD_addr                               : std_logic_vector(15 downto 0) := x"57DC";
        constant RAMTOP_addr                    : std_logic_vector(15 downto 0) := x"57DA";
        constant RAMBOTT_addr           : std_logic_vector(15 downto 0) := x"57D8";
        constant CHARRAM_addr           : std_logic_vector(15 downto 0) := x"57D6";
        constant VRAM_addr                      : std_logic_vector(15 downto 0) := x"57D4";
        constant STACK_addr                     : std_logic_vector(15 downto 0) := x"57D2";
        
        -- DE1
        --constant SRAM_width           : integer := 17;
        --constant RAMTOP_value         : std_logic_vector(15 downto 0) := x"8FFF";

        -- DE2-115
        constant SRAM_width                     : integer := 19;
        constant LCD_value                      : std_logic_vector(15 downto 0) := x"57E0";
        constant RAMTOP_value           : std_logic_vector(15 downto 0) := x"FFFF";
        constant RAMBOTT_value          : std_logic_vector(15 downto 0) := x"6000";
        constant VRAM_value                     : std_logic_vector(15 downto 0) := x"4000";
        constant CHARRAM_value          : std_logic_vector(15 downto 0) := x"5800";
        constant STACK_value                    : std_logic_vector(15 downto 0) := x"FFFF";

end  z80soc_pack;