管脚分配过后 编译 在第二步布局布线的时候出现
Error: Following feature(s) of I/O pin ~ALTERA_ASDO_DATA1~ has invalid setting(s) in the configuration scheme ACTIVE_SERIAL when the pin is placed at pin location D1
Info: I/O feature 'Weak Pull Up' has an invalid setting. The setting should be ON.
总共4个错误,这四个管脚是和配置芯片连接的??
怎么解决??