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Computing (FOLDOC) dictionary
Intel 8080
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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 programcounter. 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.