The portable network graphics File http://sdcc.svn.sourceforge.net/viewvc/*checkout*/sdcc/trunk/sdcc/doc/figures/ddd_example.png
shows a screenshot of a debugging session with DDD
(Unix only) on a simulated 8032. The debugging session might not run
as smoothly as the screenshot suggests. The debugger allows setting
of breakpoints, displaying and changing variables, single stepping
through C and assembler code.
The source was compiled with
sdcc --debug ddd_example.c
and DDD was invoked with
ddd -debugger "sdcdb -cpu 8032 ddd_example"