Hi I connected my devlopment computer(with iKGT installed) and my laptop through a USB-Serial cable. The debug info can be print on my laptop during the boot process like this: But after login the linux on my development computer, the info on the serial port turn to this: I checked the source code. Informations from MON_LOG() is well,but which from ikgt_printf() is unreadable codes. But both of them use mon_vprintf() to print into serial buffer. Why it shows like that? How can I get the info from ikgt_printf()? Tony Liu Renmin University of China