Know the Intel 8080 Microprocessor
Intel 8080 microprocessor was the successor of the Intel 8008 microprocessor CPU.Intel 8080 was designed by Federico Faggin and Masatoshi Shima. Work began in late 8080 microprocessor in 1972, and was released in April 1974. The original version of 8080 can only drive a low-power TTL devices. After that, then Intel meilis improved version of the Intel 8080 microprocessor, the Intel 8080A that can be associated with standard TTL devices.
This microprocessor running at 2 MHz which is considered as the first microprocessor to make a really efficient. The microprocessor is packaged in 40-pin DIP package so that it can provide 16-bit address bus and 8-bit data bus, so they can access 64 MB of memory (in contrast with the Intel 8008 which can only access the 16 KB). Inside are seven 8-bit registers (six of which can be combined into three 16-bit register), a stack pointer (SP) in memory (replacing the internal stack in 8008) and a program counter (PC) 16-bit.
Intel 8080/8080A Microprocessor incompatible with the object code in 8008, but compatible source code. Microprocessor interrupt processing has the same logic with 8008, which makes it easier in applying for a long time. And in addition to all the instructions and modes pengalamatannya Intel 8008 processor 8080 has many new instructions and addressing modes directly. As a result of the new use of the Stack Pointer, the microprocessor is no longer limited by the internal stack 7 levels as belonging to the Intel 8008.
Intel Microprocessors 8080 (Photo source: http://www.cpu-collection.de/?l0=i&i=1244)Intel 8080 has I / O ports 256 which allow access to device I / O is connected without the need for allocation of memory space, as required in the device memory mapped, but as a result, programmers must understand the instructions for I / O separate.
Intel 8080 microprocessor then widely used in computers, such as the MITS Altair 8800 and IMSAI 8080, formed the basis for the machine running the operating system CP / M, which is then replaced by a Zilog Z80 microprocessor is fully compatible and more efficient. So the Z80 & CP / M is more dominant as x86 with MS-DOS for PC.
This microprocessor running at 2 MHz which is considered as the first microprocessor to make a really efficient. The microprocessor is packaged in 40-pin DIP package so that it can provide 16-bit address bus and 8-bit data bus, so they can access 64 MB of memory (in contrast with the Intel 8008 which can only access the 16 KB). Inside are seven 8-bit registers (six of which can be combined into three 16-bit register), a stack pointer (SP) in memory (replacing the internal stack in 8008) and a program counter (PC) 16-bit.
Intel 8080/8080A Microprocessor incompatible with the object code in 8008, but compatible source code. Microprocessor interrupt processing has the same logic with 8008, which makes it easier in applying for a long time. And in addition to all the instructions and modes pengalamatannya Intel 8008 processor 8080 has many new instructions and addressing modes directly. As a result of the new use of the Stack Pointer, the microprocessor is no longer limited by the internal stack 7 levels as belonging to the Intel 8008.
Intel Microprocessors 8080 (Photo source: http://www.cpu-collection.de/?l0=i&i=1244)Intel 8080 has I / O ports 256 which allow access to device I / O is connected without the need for allocation of memory space, as required in the device memory mapped, but as a result, programmers must understand the instructions for I / O separate.
Intel 8080 microprocessor then widely used in computers, such as the MITS Altair 8800 and IMSAI 8080, formed the basis for the machine running the operating system CP / M, which is then replaced by a Zilog Z80 microprocessor is fully compatible and more efficient. So the Z80 & CP / M is more dominant as x86 with MS-DOS for PC.
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