Does anyone have any ideas on how to implement an I2C Slave using an 84A? I have read the PBP thread and examples for master/slave and the slave is accomplished using the hardware I2C port. Th 84A doesn't have one. I want to use an 84A for a remote keypad and have the master poll the 84A once in a while to check for keypresses. I would rather not use rs232 if I can avoid it since I already have the I2C and several devices on the bus.

I would appreciate any ideas.