First, the target device must be of the same package and density as the device for which the original programming file was generated.
In addition, when the target device has a greater feature set then the device for which the programming file was created, the Altera software will automatically disable the superset features.
Below is a list of some programming file compatibilities. Although the cross-programming options outlined below are supported, Altera recommends you recompile your source files and generate a new programming file whenever possible such that timing can be verified in the new target device. Please contact the Altera Hotline concerning any combinations not represented here.
You can program a MAX 9000A device with a MAX 9000 POF.