File list (Check if you may need any files):
BCH15_11
........\CONST.VHD
........\DBUF.RPT
........\DCH1.RPT
........\DCOUNT.RPT
........\DEC.RPT
........\DEC.VHD
........\DSYN1.RPT
........\ECOUNT.RPT
........\ENC.RPT
........\ENC.VHD
........\ERING.RPT
........\SIM.CMD
........\SIM.CME
........\SIM.VHD
Bch15_5
.......\CONST.VHD
.......\DEC.VHD
.......\ENC.VHD
.......\SIM.TXT
.......\SIM.VHD
Bch15_7
.......\CONST.VHD
.......\DEC.VHD
.......\ENC.VHD
.......\SIM.CMD
.......\SIM.TXT
.......\SIM.VHD