IO incompatible------Incompatible Vccio-Bank 2 vccio=3.3v, while for PIO comp "E7"

People may be surprised to see the title, how to get out of this bird thing, look at the following----you guess what this is, how it came out. In many cases, customers will say lattice things really bad, always a variety of problems, but in many cases is the user blind to make out, of course, do not rule out the lattice environment itself has a bug.

Talk about the cause, the customer sent to the following, I said you look first Ah, these should not be a problem----and then toss an afternoon, can not find the reason---and then desperately call me---and then I watch, Then he built a project to bind him to the foot---then did not find the problem---and then only went to the scene---you guess what happened---the customer's own blind cause.

The reason is that the customer set up two IO levels on the same bank, the io_type of a foot is LVCMOS25, the io_type of a foot is LVCMOS33, do you think this is possible---unbelievable---solution comes out naturally.

In doubt, Buckle: 825972925

IO incompatible------Incompatible Vccio-Bank 2 vccio=3.3v, while for PIO comp "E7"