Hello Piclisters. I have some specific question about PortE functioning. In PSPMODE PortE control the exchange. Initially RE0 and RE1 pins are input. I put to PortD some byte and temporary set RE0 (/RD) as output and low. Did this result to internal latched out_byte will appear on PortD pins ? In another words: Is there ability to simulate from PIC itself the external Read_from_PIC situation ? Minial additional hardware required. (I mean also no additional PIC pins) WBR Dmitry.