Lpc2000

Has anyone succeeded in getting hardware breakpoints
working with a Wiggler and gdb/insight?

Mine works perfectly for debugging code in ram (it
inserts software breakpoints perfectly), but I can't
set a breakpoint in  flash.  Neither "b main" or 
"hbreak main" work; both commands are accepted, but 
when I continue, the first gives an error writing to 
flash (no surprise) and the second warns that it could 
not insert the hardware breakpoint.

Any ideas?