3 use IEEE.std_logic_1164.all;
4 use IEEE.numeric_std.all;
6 use work.common_pkg.all;
7 --use work.alu_pkg.all;
8 --use work.gpm_pkg.all;
10 package extension_pkg is
12 constant EXTWORDL : integer := log2c(4);
13 constant BYTEADDR : integer := log2c(4);
14 constant PCOUNT : integer := 3;
15 constant EXTWORDS : integer := EXTWORDL + BYTEADDR;
17 subtype ext_addrid_t is std_logic_vector(gp_register_t'high - EXTWORDS downto 0);
18 subtype ext_addr_t is std_logic_vector((gp_register_t'high-BYTEADDR) downto 0);
19 subtype paddr_t is std_logic_vector(log2c(PCOUNT)-1 downto 0);
21 type extmod_rec is record
24 byte_en : std_logic_vector(gp_register_t'length/byte_t'length-1 downto 0);
30 type status_rec is record
37 constant EXT_7SEG_ADDR: ext_addrid_t := x"FFFFFFA";
38 constant EXT_EXTMEM_ADDR: ext_addrid_t := x"FFFFFFB";
39 constant EXT_TIMER_ADDR: ext_addrid_t := x"FFFFFFC";
40 constant EXT_AC97_ADDR: ext_addrid_t := x"FFFFFFD";
41 -- constant EXT_UART_ADDR: ext_addrid_t := x"FFFFFFE";
42 constant EXT_UART_ADDR: ext_addrid_t := x"0000200";
43 constant EXT_GPMP_ADDR: ext_addrid_t := x"FFFFFFF";
45 component extension_gpm is
46 --some modules won't need all inputs/outputs
49 RESET_VALUE : std_logic
55 -- general extension interface
56 ext_reg : in extmod_rec;
57 data_out : out gp_register_t;
59 psw_nxt : in status_rec;
62 pwr_en : in std_logic;
65 pval : out gp_register_t;
66 pval_nxt : out gp_register_t
68 end component extension_gpm;
72 end package extension_pkg;