PPI Programmable Peripheral Interface Parallel port Interface 8255 8255 PPI Addressing the 8255 A1 A0 = 00 Port A ; IN, OUT 8 bits at a time = 01 Port B ; IN, OUT 8 bits…
PPI Programmable Peripheral Interface Parallel port Interface 8255 8255 PPI Addressing the 8255 A1 A0 = 00 Port A ; IN, OUT 8 bits at a time = 01 Port B ; IN, OUT 8 bits…