type extmod_rec is record
sel : std_logic;
wr_en : std_logic;
- byte_en : std_logic_vector(gp_register_t'length/byte_t'length-1 downto 0);
+ byte_en : byte_en_t;
data : gp_register_t;
addr : ext_addr_t;
end record;
carry : std_logic;
end record;
-constant EXT_7SEG_ADDR: ext_addrid_t := x"FFFFFFA";
+procedure put_word_be (tmp : out gp_register_t; signal reg : in gp_register_t; signal byte_en : byte_en_t);
+
+-- Addressen der bis jetzt vorhanden extensions
+constant EXT_UART_ADDR: ext_addrid_t := x"0000200";
+constant EXT_7SEG_ADDR: ext_addrid_t := x"0000201";
+constant EXT_INT_ADDR: ext_addrid_t := x"0000202";
+constant EXT_IMP_ADDR: ext_addrid_t := x"0000203";
+constant EXT_TIMER_ADDR: ext_addrid_t := x"0000204";
+-- dummy addressen
constant EXT_EXTMEM_ADDR: ext_addrid_t := x"FFFFFFB";
-constant EXT_TIMER_ADDR: ext_addrid_t := x"FFFFFFC";
constant EXT_AC97_ADDR: ext_addrid_t := x"FFFFFFD";
-constant EXT_UART_ADDR: ext_addrid_t := x"FFFFFFE";
constant EXT_GPMP_ADDR: ext_addrid_t := x"FFFFFFF";
- component extension_gpm is
+component extension_gpm is
--some modules won't need all inputs/outputs
generic (
-- active reset value
pwr_en : in std_logic;
-- Ouput
psw : out status_rec;
- pval : out gp_register_t
+ pval : out gp_register_t;
+ pval_nxt : out gp_register_t
);
end component extension_gpm;
+component extension_interrupt is
+ --some modules won't need all inputs/outputs
+ generic (
+ -- active reset value
+ RESET_VALUE : std_logic
+ );
+ port(
+ --System inputs
+ clk : in std_logic;
+ reset : in std_logic;
+ -- general extension interface
+ ext_reg : in extmod_rec;
+ data_out : out gp_register_t;
+ -- Input
+ uart_int : in std_logic;
+ -- Ouput
+ int_req : out interrupt_t
+ );
+ end component extension_interrupt;
end package extension_pkg;
+
+package body extension_pkg is
+ procedure put_word_be (tmp : out gp_register_t; signal reg : in gp_register_t; signal byte_en : byte_en_t) is
+ begin
+ for i in 0 to 3 loop
+ if byte_en(i) = '1' then
+ tmp(((i+1)*byte_t'length-1) downto i*byte_t'length) := reg(((i+1)*byte_t'length-1) downto i*byte_t'length);
+ end if;
+ end loop;
+ end;
+end package body extension_pkg;