我在用modelsim se6.0仿真时出现以下的错误!!
** Error: (vsim-SDF-3250) D:/sfifo_v.sdo(35): Failed to find INSTANCE '/sfifo_tb/clk~I/asynch_inst'.
# ** Error: (vsim-SDF-3250) D:/sfifo_v.sdo(44): Failed to find INSTANCE '/sfifo_tb/write~I/asynch_inst'.
# ** Error: (vsim-SDF-3250) D:/sfifo_v.sdo(53): Failed to find INSTANCE '/sfifo_tb/fifo_ram~1/lecomb'.
# ** Error: (vsim-SDF-3250) D:/sfifo_v.sdo(63): Failed to find INSTANCE '/sfifo_tb/fifo_ram~1/lereg'.
# ** Error: (vsim-SDF-3250) D:/sfifo_v.sdo(79): Failed to find INSTANCE '/sfifo_tb/reset~I/asynch_inst'.
# ** Warning: (vsim-SDF-3432) D:/sfifo_v.sdo: This file is probably applied to the wrong instance.
# Ignoring subsequent missing instances from this file.
vsim-SDF-3445) Failed to parse SDF file
是怎么回事呀???
请高手赐教!!!
感激!!!!