MOS Technologies

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MOS Technologies

A microprocessor design company started by some ex-Motorola designers, shortly after the Intel 8080 and Motorola 6800 appeared, in about 1975. MOS Technologies introduced the 650x series, based on the Motorola 6800 design, though they were not exact clones for legal reasons.

The design goal was a low-cost (smaler chip) design, realized by simplifying the decoder stage. There were no instructions with the value xxxxxx11, reducing the 1-of-4 decoder to a single NAND gate. Instructions with the value xxxxxx11 actually executed two instructions in paralell, some of them useful.

The 6501 was pin-compatible with the 6800 for easier market penetration. The 650x-series had an on-chip clock oscillator while the 651x-series had none.

The 6510 was used in the Commodore 64, released September 1981 and MOS made almost all the ICs for Commodore's pocket calculators.

The PET was an idea of the of the 6500 developers. It was completly developed by MOS, but was manufactured and marketed by Commodore. By the time the it was ready for production (and Commodore had cancelled all orders) MOS had been taken over by Rockwell (Commodore's parent company). Just at this time the 6522 (VIA) was finished, but the data sheet for it was not and its developers had left MOS. For years, Rockwell didn't know in detail how the VIA worked.
References in periodicals archive ?
To meet efficiency and power density needs in modern power supply design, many design engineers are looking to alternatives to traditional MOS technology such as GaN technology that can help save energy and reduce system size in a variety of industrial and consumer power-switching systems.
Compared with MLCC, IPDiA MOS technology offers a fully modelized reliability model, which makes the reliability predictable during the lifetime of the application.
MOS technology supports its assumed role as liaison between borrower and the mortgage company.
TO THE DIGITAL AGE: RESEARCH LABS, START-UP COMPANIES, AND THE RISE OF MOS TECHNOLOGY provides college-level collections strong in science history with a survey of the rise of the transistor and its affects on both business and scientific pursuits.
La Commodore utilizaba el procesador 6510 desarrollado por MOS Technology de 8-bits, con 64 kilobytes de memoria RAM y un procesador sonoro que contemplaba algunas ventajas sofisticadas en procesamiento sonoro para aquella epoca, pese a contar solo con 3 canales de filtros programables (MOS Technology 6581/8580 SID).
has announced Schottky barrier rectifiers based on Trench MOS technology.
Mohamad Sawan, speaking on the topics of 2D to 3D MOS Technology Evolution and Wireless Brain-Machine Biosensing, respectively.
With the goal of using the best available Power MOS technology for electrical cars, Eric Nadeau, President of VEperformance, contacted IXYS CEO, Dr.
The TDF8599 family includes the TDF8599A and TDF8599B dual Bridge-Tied Load (BTL) car audio amplifiers comprising a dual NDMOS-Transistor output stage based on Silicon On Insulator (SOI) BCD MOS technology.
Attendees will learn how to successfully apply accurate, robust, and traceable measurement technology to the compact models being developed for scaling mainstream MOS technology into the nanometer environment.
These informative and entertaining interviews literally put a face on the history of Silicon Valley," said Ross Bassett of North Carolina State University, author of To the Digital Age: Research Labs, Start-Up Companies and the Rise of MOS Technology (Johns Hopkins University Press, 2002).