use debug.error for TODOs in PIA/SAM
use sam attr than XRoar in PAGE1/2 ops
insert CC in XRoar trace line, too
Hacked bugtracking only with Dragon 32
hacked speedup Simple6809 RAM test
log mem access as info
add addr in error message
add dummy RS232 method
bugfix: Hacked bugtracking only with Dragon 32
reimplement illegal ops
implement BHI
add a simple debugger

borrowed from http://code.activestate.com/recipes/52215/
bugfix in IllegalInstruction
better error message if periphery func. returns nonsense ;)
add fake write_rs232_interface()
implement ORCC
Bugfix BSR
nicer debugger output
implement PULS