I am making the big upgrade from the apple II to the IIe. The irq handler has moved from FA86 to where? (If mem locations FFFE and FFFF still point to the irq handler then is it located at C3FA??) The old user routine vector in ram was at 03FE, 03FF. Where is the user routine vector location in the IIe?? Thanks for any help on this matter, John.