proc_dec.vhd

8251芯片功能的vhdl描述

-- Altera Microperipheral Reference Design Version 0802
--**********************************************************************************************
--
--					System:	A8251
--				Component:	Processor interface decoder
--
--					  File:	proc_dec.vhd
--				 Revision:	0.1
--			Date Created:	6 June 99
--					Author:	Kent Dahlgren
--				 Function:	Decodes processor read and write cycles
--
--				 Generics:	none
--	  Target Simulator:	Vantage VHDL
--	  Target Synthesis:	Synplify
--
-- Reference Material: 	Altera Microperipheral MegaCore Databook
--								Intel 8251A datasheet
--
--			Verification:	No
--			  Validation:	No
--		  Certification:	No
--
--**********************************************************************************************

--**********************************************************************************************
--													 Specification
--
-- The original header information from proc_dec.vhd is as follows:
--
--  file name  :	proc_dec.vhd
--	 project	   :	Altera A8251 USART
--  purpose    :	A8251 Processor signal decoder
--																	to better reflect function.
--
--Copyright