我再modelsim后仿真的时候出现论坛上同一个帖子的错误，请教高手帮忙啊？ # Loading instances from F:/QIIpractice/count4_simulation/count4_v.sdo
# ** Error: (vsim-SDF-3250) count4_v.sdo(39): Failed to find INSTANCE 'clk~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(39): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(48): Failed to find INSTANCE 'clk~clkctrl '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(57): Failed to find INSTANCE 'extena0_reg'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(72): Failed to find INSTANCE 'out[0]~12 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(248): Failed to find INSTANCE 'out[0]~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(248): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(114): Failed to find INSTANCE 'out[0]~reg0 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(130): Failed to find INSTANCE 'out[1]~4 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(258): Failed to find INSTANCE 'out[1]~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(258): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(145): Failed to find INSTANCE 'out[1]~reg0 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(161): Failed to find INSTANCE 'out[2]~6 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(268): Failed to find INSTANCE 'out[2]~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(268): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(175): Failed to find INSTANCE 'out[2]~reg0 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(191): Failed to find INSTANCE 'out[3]~8 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(278): Failed to find INSTANCE 'out[3]~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(278): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(205): Failed to find INSTANCE 'out[3]~reg0 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(221): Failed to find INSTANCE 'out[4]~10 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(288): Failed to find INSTANCE 'out[4]~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(288): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(232): Failed to find INSTANCE 'out[4]~reg0 '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(81): Failed to find INSTANCE ' eset~I '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(81): Failed to find INSTANCE 'asynch_inst'.
# ** Error: (vsim-SDF-3250) count4_v.sdo(90): Failed to find INSTANCE ' eset~clkctrl '.
# ** Error: (vsim-SDF-3250) count4_v.sdo(99): Failed to find INSTANCE 'extena0_reg'.
# ** Error: (vsim-SDF-3894) : Errors occured in reading and resolving instances from compiled SDF file(s).
# ** Warning: (vsim-3015) F:/QIIpractice/count4_simulation/count4_test.v(6): [PCDPC] - Port size (5 or 5) does not match connection size (4) for port 'out'.
# Region: /count4_test/c
# Loading work.CYCLONEII_PRIM_DFFE
# ** Fatal: SDF files require Altera primitive library
# Time: 0 ps Iteration: 0 Instance: /count4_test File: F:/QIIpractice/count4_simulation/count4_test.v
# FATAL ERROR while loading design
# Error loading design 此帖出自小平头技术问答