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同步串行数据发送电路SSDT的基本功能是将并行数据转换成串行数据并进行同步发送。系统写入和读出时序完全兼容Intel8086时序。 系统以同步信号开始连续发送四个字节

# Reading C:/Modeltech_6.0/tcl/vsim/pref.tcl 
# //  ModelSim SE 6.0 Aug 19 2004 
# //
# //  Copyright Mentor Graphics Corporation 2004
# //              All Rights Reserved.
# //
# //  THIS WORK CONTAINS TRADE SECRET AND 
# //  PROPRIETARY INFORMATION WHICH IS THE PROPERTY
# //  OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS
# //  AND IS SUBJECT TO LICENSE TERMS.
# //
#  OpenFile "E:/liangmao/EDA轠/_渟胉/胉3/Token/src/TOKEN_TB.vhd"