BCU1 application programs are those assigned to mask versions x01xh, as well as x02xh with LoadProcedureStyle = DefaultProcedure (BCU2 in BCU1 compatibility mode).
The following restrictions apply for BCU1 application programs without Hawk plugin:
·The LoadProcedureStyle must be "DefaultProcedure"
·The ProgramType must be "ApplicationProgram" (not "PeiProgram")
·There must be exactly one absolute segment with memory range 0100h to 01FFh, for mask version x02xh up to 046Fh.
·User memory is not supported
·Property parameters are not supported
·The AddressTable must start at address 0116h
·If DynamicTableManagement is set, the Association table must be directly after the address table