Intel 8080 8080 <processor> The successor to the {Intel 8008}. The 8080 had a 16-bit {address bus} and an 8-bit {data bus}. It had seven 8-bit {registers} (six which could also be combined as three 16-bit registers), a 16-bit {stack pointer} to memory which replaced the 8008's internal stack and a 16-bit {program counter}. It also had 256 I/O ports (so I/O devices could be connected without needing to allocate any addressing space as is required for {memory mapped} devices) and a signal pin that allowed the {stack} to occupy a separate bank of memory. Shortly after the 8080, the {Motorola 6800} was introduced. [Date?] (1994-10-31)