8255 Data

• DIO Base+00h (8255-1 Port A), DIO Base+04h (8255-2 Port A) - (Read/Write)

• DIO Base+01h (8255-1 Port B), DIO Base+05h (8255-2 Port B) - (Read/Write)

• DIO Base+02h (8255-1 Port C), DIO Base+06h (8255-2 Port C) - (Read/Write)

DATA	8-bit parallel data. On reset, the port is set to input mode and the port is held at a logic level 1 until the reset signal is removed. The port remains in input mode until changed using the control register. Following a reset, all lines are set to input mode.