Hi! > Does anyone know how to remap the flash mem to address > $000000? When the calc first starts up (the batteries > are put in), the flash mem is mapped to address > $000000. What are the i/o ports used to remap it to > either $000000 or $200000? Thanx! You can find the answer in the well known and celebrated Johan's TI-89 Hardware Info document. Zeljko Juric