How to debug my redboot_RAM.elf step by step ?

[ywc02]

Hi All,

        I'm a new learner in the eCos world and in progress of porting eCos to 
ARM
Versatile Platform(ARM926EJ-S),with Integrator(ARM966E) as my baseline.
 
        I have built a redboot_RAM.elf. When it run on platform, only one 
character, '+'
,output on my hyperterminal. 

        I have following issues:
        (1) How to debug redboot_RAM.elf step by step? I failed to debug it 
with AXD.
Does AXD just support .axf file?

        (2)Does RedBoot output the just character? Where is the corresponding 
code?   

        My development environment is listed as belowing: 
        
        Target: VPB926EJS Boot_Monitor_V2.0.2
        Host  : ecos_config_tool_2.11 Cygwin gnutools-arm-elf-1.4-2.cygwin 
        Tools : ADS Multi-ICE
        
         -Thanks a lot !!
¡¡¡¡¡¡
         Tim Yin¡¡¡¡¡¡¡¡¡¡¡¡¡¡