vmm仿真错误？
时间：10-02
整理：3721RD
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我用QustaSim6.5d仿真vmm的fifo的例子，老是有以下错误，不知道什么原因，请各位指教！
# vsim -sv_lib libgnurx-0 work.fifo_tb
# Loading novas.dll
# Loading C:\Novas\Debussy\share\PLI\modelsim_pli\WINNT\novas.dll
# Loading sv_std.std
# Loading work.fifo_tb(fast)
# Loading work.fifo_if_sv_unit(fast)
# Loading work.fifo_if(fast)
# Loading work.fifo_test_pgm(fast)
# Loading work.fifo_rtl_sv_unit(fast)
# Loading work.fifo(fast)
# Loading work.fifo_props_sv_unit(fast)
# Loading work.fifo_props(fast)
# ** Fatal: (vsim-8451) E:/Questasim6.5/vmm-1.1.1a/sv/examples/std_lib/fifo_tb/fifo_cmd_xactor.sv(72): Virtual interface resolution cannot find a matching instance of interface 'fifo_if.driver'.
#Time: 0 psIteration: 0Instance: /fifo_tb/utest_pgm File: E:/Questasim6.5/vmm-1.1.1a/sv/examples/std_lib/fifo_tb/fifo_pgm.sv
# FATAL ERROR while loading design
# Error loading design
# vsim -sv_lib libgnurx-0 work.fifo_tb
# Loading novas.dll
# Loading C:\Novas\Debussy\share\PLI\modelsim_pli\WINNT\novas.dll
# Loading sv_std.std
# Loading work.fifo_tb(fast)
# Loading work.fifo_if_sv_unit(fast)
# Loading work.fifo_if(fast)
# Loading work.fifo_test_pgm(fast)
# Loading work.fifo_rtl_sv_unit(fast)
# Loading work.fifo(fast)
# Loading work.fifo_props_sv_unit(fast)
# Loading work.fifo_props(fast)
# ** Fatal: (vsim-8451) E:/Questasim6.5/vmm-1.1.1a/sv/examples/std_lib/fifo_tb/fifo_cmd_xactor.sv(72): Virtual interface resolution cannot find a matching instance of interface 'fifo_if.driver'.
#Time: 0 psIteration: 0Instance: /fifo_tb/utest_pgm File: E:/Questasim6.5/vmm-1.1.1a/sv/examples/std_lib/fifo_tb/fifo_pgm.sv
# FATAL ERROR while loading design
# Error loading design
求指教！