move address register

[raggedstone] / dhwk / source / Io_mux.vhd

-- J.STELZNER\r
-- INFORMATIK-3 LABOR\r
-- 23.08.2006\r
-- File: IO_MUX.VHD\r
\r
library IEEE;\r
use IEEE.std_logic_1164.all;\r
\r
entity IO_MUX is\r
	port\r
	(\r
	READ_SEL			:in		std_logic_vector ( 1 downto 0);\r
	USER_DATA			:in		std_logic_vector (31 downto 0);\r
	CONFIG_DATA		:in		std_logic_vector (31 downto 0);\r
	PCI_AD				:in		std_logic_vector (31 downto 0);\r
	IO_DATA				:out	std_logic_vector (31 downto 0)\r
	);\r
end entity IO_MUX;\r
\r
architecture IO_MUX_DESIGN of IO_MUX is\r
\r
	signal	MUX		:std_logic_vector (31 downto 0); \r
\r
begin \r
\r
	MUX	<=	PCI_AD			when	READ_SEL	=	"00"	else	-- WRITE_CONFIG \r
					PCI_AD			when	READ_SEL	=	"01"	else	-- WRITE_IO\r
					CONFIG_DATA	when	READ_SEL	=	"10"	else	-- READ_CONFIG \r
					USER_DATA		when	READ_SEL	=	"11"	else	-- READ_IO  	\r
					CONFIG_DATA;\r
\r
--					MUX;\r
\r
	IO_DATA <= MUX;\r
\r
end architecture IO_MUX_DESIGN;\r