>hi i have just bought a ti-82, i did the ROM test (has19)and it kindly >erased the whole memory. Is this supposed to happen or was it my lucky >day?.....and i had spent about 2 hours programming a load of formulas into >it for my degree....arse! yep... Running the self test erases memory. To not erase memory you hit mode alpha S but then press clear to not run the test. -- Barubary