Vps_printf output unreadable codes in the dsp?

The message title is ok, so the whole thing likes :

[c6xdsp] ***

[c6xdsp] **

Pls share example code of what you are printing.Do you see no print coming or *** being printed instead of correct data

just simple as :

Vps_printf("Hello world.\n");

the output is :

[c6xdsp] ◆◆◆

there're something out, but all the unreadable. 

Are all prints from c6xdsp wrong or only what you print ? On running load.sh it will print things like CPU frequency from c6xdsp. Are those showing correctly. Have you made any modification to the memory map ? Which DVRRDK release are you using

All information printed in load.sh is correctly. Only my print is unreadable. The version is DVRRDK 4.