# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(126): Undefined variable: DM_BITS.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(127): Undefined variable: BA_BITS.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(128): Undefined variable: ADDR_BITS.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(129): Undefined variable: DQ_BITS.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(130): Undefined variable: DQS_BITS.
...
...(很多error:Undefined variable)
...
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(92): Identifier must be declared with a port mode: dm_tdqs.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(93): Identifier must be declared with a port mode: ba.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(94): Identifier must be declared with a port mode: addr.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(95): Identifier must be declared with a port mode: dq.
# ** Error: ipcore_dir/mig/example_design/sim/ddr3_model.v(96): Identifier must be declared with a port mode: dqs.