3 use IEEE.std_logic_1164.all;
4 use IEEE.numeric_std.all;
6 use work.common_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 := log2c(4);
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 pointer_count is std_logic_vector(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);
32 constant EXT_7SEG_ADDR: ext_addrid_t := x"FFFFFFA";
33 constant EXT_EXTMEM_ADDR: ext_addrid_t := x"FFFFFFB";
34 constant EXT_TIMER_ADDR: ext_addrid_t := x"FFFFFFC";
35 constant EXT_AC97_ADDR: ext_addrid_t := x"FFFFFFD";
36 constant EXT_UART_ADDR: ext_addrid_t := x"FFFFFFE";
37 constant EXT_GPMP_ADDR: ext_addrid_t := x"FFFFFFF";
39 component extension_gpm is
40 --some modules won't need all inputs/outputs
43 RESET_VALUE : std_logic
49 -- general extension interface
50 ext_reg : in extmod_rec;
51 data_out : out gp_register_t;
53 alu_nxt : in alu_result_rec;
56 pwr_en : in std_logic;
59 pval : out gp_register_t
63 end component extension_gpm;
67 end package extension_pkg;