Intel 8080


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Intel 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.

References in periodicals archive ?
It will be reported in the press that you were the third user of the Intel 8080 processor chip within your products.
Both marked a first for Intel and were succeeded by the Intel 4040 and the Intel 8080. The Intel 4040 was the first machine-code-compatible chip while the 8080 microprocessor was the first high-performance 8-bit microprocessor.
Shaking hands on this partnership represents a rare moment of harmony in an often bitter rivalry that began when AMD reverse-engineered the Intel 8080 microchip in 1975.
A Tabela 1 e o Grafico 7 apresentam a evolucao do numero de transistores com base no valor real do numero de transistores do processador mais avancado em 1975, o Intel 8080. Uma analise preliminar da serie historica mostra que o erro acumulado ao longo dos anos apresenta grande oscilacao e, em alguns casos, grande amplitude.
For instance, in 1974, the Intel 8080 microprocessor delivered one million instructions per second (1 MIPS) for $1,250.
The threat to the mainframe empire began in 1975 with the Altair 8800, a microcomputer kit featuring the Intel 8080. The 8080, introduced in March 1974, was a full-featured 8-bit microprocessor that sold for $395.
This design was later improved and simplified to create the Intel 8080 in 1974.