AVR Freaks

I would think the address for PC would be related to the CPU:      .equ CPU_base = 0x0030                   ; CPU ( this is for m4809 mcu)

Probably undocumented like El Tangas points out... But what do I know?

Good Question BTW!

Edit:

 I Misunderstood your question.  The only address I see is a Recieve :

# in "main.py"
HOST = '127.0.0.1'  # Standard loopback interface address (localhost)
PORT = 12555        # Port to listen on (non-privileged ports are > 1023) 

 ## in "main.py"
  if len(command) > 1:
            if command[1:] == "22":
                # GDB defines PC register for AVR to be REG34(0x22)
                pc = dbg.readProgramCounter()
                print(pc)
                print(hex(pc))
                pc = pc << 1

 # in "debugger.py"
 # looks like this depends on many contingencies
from pyedbglib.hidtransport.hidtransportfactory import hid_transport
from pyedbglib.protocols import housekeepingprotocol
from pyedbglib.protocols import housekeepingprotocol
from pyedbglib.protocols import avr8protocol
from pyedbglib.protocols import avr8protocolerrors

The script looks as if it depends on other file(s) that are in other precompiled? packages, maybe? 

The proprietary debugging methods may not be shared on data/app notes.  

Seems OCD is not even mentioned in most of the Data sheets except for #6 above

You picked a stumper!