PyBoy•9mo ago

How can I access PyBoy.mb from within a subclass.

This has probably been asked before but I wanted to try to get local link support working in PyBoy
I felt it would be easier to modify if I made it a subclass of PyBoy.

Here is a small snippet of my code:

class LinkBoy(PyBoy, LinkDevice):
  def RecievedFullByte(self):
        self.memory[0xFF02] = clearBit(self.memory[0xFF02], 7)
        self.mb.cpu.set_interruptflag(0b00001000)

class LinkBoy(PyBoy, LinkDevice):
  def RecievedFullByte(self):
        self.memory[0xFF02] = clearBit(self.memory[0xFF02], 7)
        self.mb.cpu.set_interruptflag(0b00001000)

When data is transmitted I get this error:

Traceback (most recent call last):
  File "e:\LinkBoy\main.py", line 9, in <module>
    link.step()
  File "e:\LinkBoy\linkboy.py", line 75, in step
    transfer.step()
  File "e:\LinkBoy\linkboy.py", line 56, in step
    self.slave.RecievedFullByte() #Notify the slave device the transfer has completed
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "e:\LinkBoy\linkboy.py", line 109, in RecievedFullByte
    self.mb.cpu.set_interruptflag(0b00001000)
    ^^^^^^^
AttributeError: 'LinkBoy' object has no attribute 'mb'

Traceback (most recent call last):
  File "e:\LinkBoy\main.py", line 9, in <module>
    link.step()
  File "e:\LinkBoy\linkboy.py", line 75, in step
    transfer.step()
  File "e:\LinkBoy\linkboy.py", line 56, in step
    self.slave.RecievedFullByte() #Notify the slave device the transfer has completed
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "e:\LinkBoy\linkboy.py", line 109, in RecievedFullByte
    self.mb.cpu.set_interruptflag(0b00001000)
    ^^^^^^^
AttributeError: 'LinkBoy' object has no attribute 'mb'

Is there any way to get around this withot directly modifying the library, or do i have to do that?

Sky•4/14/25, 8:56 PM

The mb Motherboard is only exposed to cython, you can't access it without editing pyboy's source code. If you want to expose it to python, you need to add