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Encyclopedia > MOS Technology 6507

The 6507 is an 8-bit microprocessor from MOS Technology, Inc. It is a "cut down" version of their popular 6502. To reduce costs the 6507 included only thirteen address pins instead of the 6502's sixteen. This allowed the 6507 to address 8 KB of memory, at the time (1975) considered to be a lot. The omission of these lines allowed the 6507 to come in a smaller 28-pin package, instead of the 40 pins of the 6502. A microprocessor (sometimes abbreviated µP) is a programmable digital electronic component that incorporates the functions of a central processing unit (CPU) on a single semiconducting integrated circuit (IC). ... MOS Technology, Inc. ... The MOS Technology 6502 is an 8-bit microprocessor that was designed by Chuck Peddle for MOS Technology in 1975. ... A kilobyte (derived from the SI prefix kilo-, meaning 1000) is a unit of information or computer storage equal to either 1000 or 1024 bytes. ...

In addition to the reduced address bus, the 6507 is also unable to service external interrupts, but is otherwise identical to the 6502. The 6507 was only widely used in two applications, the bestselling Atari 2600 video game console and the Atari 8-bit family floppy disk controllers for the 810 and 1050 drives. In the 2600, the system was further limited by the design of the cartridge slot, which allowed for only 4KB to be addressed. Most other machines, notably home computers based on the 650x architecture, used either the "full" 6502 or extended, rather than cut down, versions of it, in order to allow for more memory. An address bus is (part of) a computer bus, used by CPUs or DMA-capable units for communicating the physical addresses of computer memory elements/locations that the requesting unit wants to access (read/write). ... In computing, an interrupt is an asynchronous signal from hardware or software indicating the need for attention. ... The Atari 2600, released in October 1977, was the first successful video game console to use plug-in cartridges instead of having one or more games built in. ... video game consoles A video game console is an interactive entertainment computer. ... An Atari 800XL, one of the most popular machines in the series. ... A floppy disk is a data storage device that is composed of a disk of thin, flexible (floppy) magnetic storage medium encased in a square or rectangular plastic shell. ... In various types of electronic equipment, a cartridge can refer one method of adding different functionality or content (e. ... Children playing on a Amstrad CPC 464 in the 1980s. ... MOS Technology 65xx is a family of 8-bit microprocessors from MOS Technology, based on the Motorola 6800 (introduced ca. ...

By the time the 6502 line was becoming widely used around 1980, ROM and RAM semiconductor memory prices had fallen to the point where the 6507 was no longer a worthwhile simplification; its use in new designs ceased at that point, though the Atari 2600 which contained it continued to be sold until the end of the 1980s. Read-only memory (ROM) is a class of storage media used in computers and other electronic devices. ... Different types of RAM. From top to bottom: DIP, SIPP, SIMM 30 pin, SIMM 72 pin, DIMM, RIMM RAM redirects here. ... A semiconductor is a solid whose electrical conductivity can be controlled over a wide range, either permanently or dynamically. ...

65xx-series CPUs from MOS Technology, second source/clone vendors, and the Western Design Center

MOS 4510MOS 6501MOS 6502WDC 65C02Hudson HuC6280Ricoh 2A03MOS 6507MOS 6508MOS 6509
MOS 6510 (and 7501, 8500, 8501) ● MOS 8502MOS 65CE02WDC 65802WDC 65816Ricoh 5A22 ● Nintendo SA-1 Image File history File links MOS_Technology. ... Image File history File links WDClogo_small. ... MOS Technology 65xx is a family of 8-bit microprocessors from MOS Technology, based on the Motorola 6800 (introduced ca. ... CPU redirects here. ... MOS Technology, Inc. ... If you were looking for the Western Digital Corporation, see Western Digital. ... The MOS Technology 4510 was the MOS-manufactured microcomputer chip used in the (unreleased) Commodore 65 8-bit home/personal computer. ... The 6501 is an eight-bit microprocessor, the first sold by MOS Technology. ... The MOS Technology 6502 is an 8-bit microprocessor that was designed by Chuck Peddle for MOS Technology in 1975. ... WDC 65C02 Microprocessor // Introduction The W65C02S is a low power, cost effective 8-bit microprocessor. ... The HuC6280 8-bit microprocessor is Japanese company Hudson Softs improved version of the WDC 65C02 CPU. The most notable product using the HuC6280 is NECs TurboGrafx 16 video game console. ... The Ricoh 2A03 or RP2A03 was the 8-bit microprocessor in the Nintendo Family Computer and Nintendo Entertainment System video game consoles sold in Japan and North America. ... The MOS Technology 6508 was an 8-bit microprocessor designed by MOS Technology. ... The MOS Technology 6509 was an enhanced version of the popular 6502 microprocessor, capable of addressing up to 1 megabyte of RAM via bank switching. ... Image of the innards of a Commodore 64 showing the 6510 CPU (40-pin DIP, lower left). ... The MOS Technology 8502 was MOSs microprocessor used as one of the two¹ CPUs in the Commodore 128 home/personal computer. ... The 65CE02 (a derivative of 6502/65c02) is a CPU core developed by Commodore Semiconductor Group (formerly known as Commodore MOS) that has been used in the CSG 4510 micro controller (that combined a CPU and several I/O components) in the Commodore C64DX/C65. ... W65C816S microprocessor in a DIP40 package. ... W65C816S microprocessor in a DIP40 package. ... The Ricoh 5A22 is the microprocessor CPU produced by Ricoh for the Super Nintendo Entertainment System (SNES) video game console. ... The Nintendo SA-1 is a microprocessor developed by Nintendo for use in Super Nintendo Entertainment System (SNES) game cartridges. ...

  Results from FactBites:
MOS Technologies: Definition and Links by Encyclopedian.com - All about MOS Technologies (1314 words)
MOS Technologies was a microprocessor and calculator company famous for its 6502.
MOS was a small firm with good credentials in the right area (the east coast) so that was that.
MOS had learned the trick of fixing their masks after they were made.
  More results at FactBites »



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