i've just got my MCBx51 board, and try (seriuosly unsuccessful) to download my source to the 89C51RD2 (both with µVision2 nor with FLIP) i never get a connection via RS232. where is the problem I tryed several combinations of DIP switch settings and Int/Ext RS232 UART. Also in combination wit AppNote 156 - no result !"! Is ther anyone to give me the right setup of MCBx51 and maybe some SW setups.