Hi I just bought the MCB900 ver.4 with LPC935. I have programmed the first demo program into the flash - CheckLed - and it works fine on the eval board. I have many experiences with the old non Keil DOS assembler but I don't know yet to manage Keil A51. As I have found there are only C examples on the CD, but this is useless for me. PLEASE, can somebody save me some hours and show the short *.A51 program which will flash or do something else with the MCB900 on board LEDs. I really can't understand why I can't find some A51 examples on the enclosed CD.