I used Dave 2.0 and UV2 to create my project. I am interfacing to an LCD display. I can run in Monitor mode with no problem. But, when I Flash it, I do not get anything legible on the LCD display when I run it. I can Flash the small example programs and run fine. I am not sure what the problem is but did notice that my .H86 file is 139KB and that is quite a bit larger than those example programs. I am using the PHytec Mini-module and the C167CR-LM chip. Also, I am using a full-up software version from Keil I have used the following settings in Target Options RX Tiny operating system Small memory mode 16kb RAM 16kb ROM ROM #1 start 0x00 size 0xE000 RAM #2 start 10000 size 0x8000 In the Start167.a66 file I have also enabled the chip select 1 set address to 10000 and Range 32K The flash chip is F29010 Thanks for any help, Vida