ISim log file
Running: C:\Users\Fred6502\Xilinx\tutorial\AppleIIGateSch\chip74LS257_chip74LS257_sch_tb_isim_beh.exe -intstyle ise -gui -tclbatch isim.cmd -wdb C:/Users/Fred6502/Xilinx/tutorial/AppleIIGateSch/chip74LS257_chip74LS257_sch_tb_isim_beh.wdb 
ISim P.20131013 (signature 0x7708f090)
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WARNING:Security:42 - Your software subscription period has lapsed. Your current version of Xilinx tools will continue to function, but you no longer qualify for Xilinx software updates or new releases.


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This is a Full version of ISim.
Time resolution is 1 ps
# onerror resume
# wave add /
# run 30000 ns
Simulator is doing circuit initialization process.
auto_init not defined
Finished circuit initialization process.
PASSED
Stopped at time : 10340 ns : File "C:/Users/Fred6502/Xilinx/tutorial/AppleIIGateSch/chip74LS257_tb.v" Line 102