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74309d7132 Intel 8080 An Intel C8080A processor. 11, November 1979 pg. ^ ClassicCMP.org. This section does not cite any sources. Though x86 may not be the most elegant, or theoretically most efficient design, the sheer market force of so many dollars going into refining a design has made the x86 family today, and will remain for some time, the dominant processor architecture, even bypassing Intel's attempts to replace it with incompatible architectures such as the iAPX 432 and Itanium. The processor switches data and address pins into the high impedance state, allowing another device to manipulate the bus 22 1 Input The first phase of the clock generator signal 23 READY Input Wait. References.
New York: Fairchild Publications. The carry bit can be set, or complemented, by specific instructions. Stanley Mazor contributed a couple of instructions to the instruction set. Unsourced material may be challenged and removed. 8080 Assembler code can still be directly translated into x86 instructions; all of its core elements are still present. There are also eight one-byte call instructions (RST) for subroutines located at the fixed addresses 00h, 08h, 10h, ., and 38h. Pin usage. The Auto-COM instruments also included an entire automated film cutting, processing, washing, and drying sub-system quite a feat, both then and in the 21st century, to all be accomplished successfully with only an 8-bit microprocessor running at a clock speed of less than 1MHz with a 64KB memory limit. The pin-out table, from the chip's accompanying documentation, described the pins as follows:. The address bus had its own 16 pins, and the data bus had eight pins that were possible to use without any multiplexing.