FlashMagic failed

[slchow]

Hi there,
I am using MCB900 Eval. Kits. I use Flash Magic  to flash image into MCB900. I was working fine, until I changed my program that toggles P2 port(all pins). After the every first time, Now the FlashMagic always shows " Attempt to connect..." but failed finally.

I don't know whether my program that causes that even I am doubt.

Appreciate your comments, suggestions.

Thanks
siowlim

[Andy Ayre]

How are you trying to enter ISP mode? Break condition or pulses? If it is break condition, then check the RxD pin is being pulled low by Flash Magic. If it is pulse entry, then compare waveforms with the ones on the Flash Magic application note - Enterin ISP mode using DTR and RTS.