peri_mem_config.vhd

来自「用VHDL语言实现的ARM处理器的标准内核的源代码程序」· VHDL 代码 · 共 37 行

library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;

package peri_mem_config is

-----------------------------------------------------------------------------
-- Automatically generated by vhdl/peripherals/mem/config.pl from of .config
-----------------------------------------------------------------------------

constant CFG_PERIMEM_BUS8EN : boolean := true; -- enable 8-bit bus operation
constant CFG_PERIMEM_BUS16EN : boolean := true; -- enable 16-bit bus operation
constant CFG_PERIMEM_WENDFB : boolean := true; -- enable wen feed-back to data bus drivers
constant CFG_PERIMEM_RAMSEL5 : boolean := true; -- enable 5th ram select
constant CFG_PERIMEM_SDRAMEN : boolean := true; -- enable sdram controller
constant CFG_PERIMEM_SDINVCLK : boolean := true; -- invert sdram clock

type cfg_perimem_boottype is (perimem_memory, perimem_prom, perimem_dual);

constant CFG_PERIMEM_BOOT :  cfg_perimem_boottype := perimem_memory; -- select boot source
constant CFG_PERIMEM_BRAMRWS   	: unsigned(3 downto 0) := conv_unsigned(0, 4);	-- ram read waitstates
constant CFG_PERIMEM_BRAMWWS   	: unsigned(3 downto 0) := conv_unsigned(0, 4);	-- ram write waitstates
constant CFG_PERIMEM_SYSCLK   	: integer := 25000000;	-- cpu clock
constant CFG_PERIMEM_BAUD     	: positive := 19200;	-- UART baud rate
constant CFG_PERIMEM_EXTBAUD  	: boolean := false;	-- use external baud rate setting
constant CFG_PERIMEM_PABITS   	: positive := 11;	-- internal boot-prom address bits

constant CFG_PERIMEM_WPROTEN   	: boolean := true; -- enable RAM write-protection unit

-----------------------------------------------------------------------------
-- end of automatic configuration
-----------------------------------------------------------------------------

end peri_mem_config;