Sega Collectables

The Processor That Sparked the Computer Revolution of the 1980’s

The MOS 6502 is an 8-bit microprocessor with a 16-bit address bus, designed by Chuck Peddle in 1975. Along with the Zilog Z80 it sparked a series of computer projects that would eventually result in the home computer revolution of the 1980s.

Despite the relatively low clock speed of 1 Mhz, the 6502’s performance was actually competitive with other CPUs using higher clock speeds in the late 1970’s and early 1980’s (the Zilog Z80 for example). It has only very few registers – one 8-bit accumulator register (A), two 8-bit index registers (X and Y), an 8-bit processor status register (P), an 8-bit stack pointer (S), and a 16-bit program counter (PC) and a quite simple instruction set. The 16 bit address but allowed to allocate up to 64 kb of memory.

One of the first computers to use the 6502 were the Apple I (1976), the Apple II, and the Commodore PET, the Atari home computers and the BBC Micro. The famous Commodore 64 used a MOS 6510, which was a successor of the 6502 with a digital I/O port and a three-state bus. The 6507, a simplified version of the 6502, was used in the Atari 2600 videogame console. The 8502 was a 2 Mhz version of the 6502 which was used in the Commodore 128. Millions of computer systems with MOS 6502 processors shipped during the 1980’s.

The MOS 6502 had been very popular among assembly language programmers (mostly because if it’s simplistic design), and even 31 years later it is today used to teach assembly language and computer architecture by many universities.

Several companies produced 16 bit derivatives of the 6502, for example the Western Design Center 65C816 (still widely used today) or the (not fully compatible) Mitsubishi 65816. A planned Synertek SY6516 was never released. 32-bit derivatives include the Western Design Center W65T32 Terbium, a 6502 compatible chip with a 32-bit address bus, a 16-bit data bus, and a variable length instruction set.

The MOS 6502 clearly dominated the 8 bit homecomputer and videogame world, but then Apple, Commodore and Atari all switched to the Motorola 68K architecture with their next generation 16 bit computers (the Macintosh, the Amiga and the ST). Although the 6502 architecture faded in the homecomputer and video game market, it still remains a quite popular design that can still be found as the core of many microcontroller chips today.

About the Author

Jos Kirps is the creator of several software and web projects, including Galaxiki, a fictional galaxy where site members can get their own solar system and the Open Source CorneliOS webOS.

ATARI 5200 – Angry Video Game Nerd – Cinemassacre.com

Backgammon (Atari 2600) $0.00

Ms Pac-Man Mouse Pad Atari Arcade Video Game Namco $0.00

Atari 2600 with box VG condition $0.00

Venture (Atari 2600) + Box and Manual! Rare! $0.00

Super Breakout (Atari 2600) + Box and Manual! Rare! $0.00

STARMASTER (Atari 2600) + Box and Manual! Rare! $0.00

Casino (Atari 2600) + Box and Manual! Rare! $0.00

Video Pinball (Atari 2600) + Box and Manual! Rare! $0.00

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Atari 2600 Games, Lot of 10, Silver Labels, Swordquest, Vanguard, Jungle Hunt $0.00

Atari 2600 lot of two gaming systems Woodgrain Console and Vader Model $0.00

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Atari 2600 Front Line Coleco $0.00

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Atari 2600 Alpha Beam with Ernie $0.00

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Atari 2600 Activision Barnstorming Cartridge Color Sky Variant $0.00

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Atari 2600 Activision Commando Cartridge $0.00

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Atari 2600 Activision Dolphin Cartridge $0.00

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Atari Anniversary Edition Redux (Sony PlayStation 1, 2002) $0.00

lot of 5 hard to find atari 2600 carts, fast food, crash dive, cosmic creeps… $0.00

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Pac-Land Logo Mouse Pad Atari Arcade Video Game Pac-man $0.00

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Atari 2600 Jr. Console complete + 5 games $0.00

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Lot VINTAGE ATARI 5200 System 8 Games 4 Controllers BOX CABLES COMPLETE WORKS $0.00

James Bond 007 (Atari 5200) complete $0.00

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Pong Sports (Atari 2600) $0.00

TNT Collection – ATARI ST – Hard Drivin’ Toobin A.P.B. Dragon Spirit XYBOTS $0.00

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Atari 400 800 Rare Cassette Super Cube and Slip with Manual and Original Box $0.00

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1982 ATARI 5200 4 Port Console System in Original BOX + 5 Games Pac-Man *VGC* $0.00

Beat ‘em and Eat ‘em (Atari 2600) $0.00

FLIGHT SIMULATOR 98, independence war, mechwarrior- NEW ATARI FLYING COLLECTION $0.00

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Missile Command-Atari Game-New Never Opened-Collector $0.00

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PLANET PATROL SPECTRAVISION PAL – ATARI 2600 boxed $0.00

1982 ACTIVISION Grand Prix Game atari Ad Print Only $0.00

Choplifter! (Atari 7800) BRAND NEW SEALED $0.00

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Atari 7800 Black Console (NTSC) with 12 Game Bundle $0.00

32 games in 1 Multicart – Atari 2600 boxed – DIP SWITCH cart – PAL #3 $0.00

Robot Tank – Atari 2600 – ACTIVISION – TESTED $0.00

32 games in 1 Multicart – Atari 2600 rare – Super rare DIP SWITCH cart – PAL $0.00

VINTAGE WICO COMMAND CONTROL VIDEO CONTROLLER JOYSTICK FOR THE 2600 ATARI SERIES $0.00

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Activision Tennis (Atari 1981) $0.00

Pac-Man (Atari 2600) $0.00

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Activision Dragster (Atari 1981) $0.00

Space Cavern – Atari 2600 – RED LABEL – APOLLO – TESTED $0.00

8 Abacus Books on Atari Commodore Portfolio OS/2 $0.00

BREAKAWAY IV BOX TELE-GAMES BOXED SEARS ATARI 2600 7800 DESIGNED BY STEVE JOBS $0.00

NEW SUPER CHALLENGE FOOTBALL BOXED ATARI 2600 7800 RARE $0.00

LABYRINTH ATARI 2600 VCS PAL FORMAT US SELLER RARE $0.00

NEW PHOENIX BOX BOXED ATARI 2600 7800 RARE $0.00

REALSPORTS BASEBALL BOXED BOX ATARI 2600 7800 VCS RARE $0.00

BRAIN GAMES 1986 LABEL VARIATION ATARI 2600 7800 RARE $0.00

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DRAGONSTOMPER SUPERCHARGER ATARI 2600 RARITY 5 $0.00

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NEW XEVIOUS ATARI 7800 RARE $0.00

OSCAR’S TRASH RACE CCW ATARI 2600 7800 VCS RARITY 4 $0.00

NEW POLE POSITION II ATARI 7800 FACTORY SEALED RARE $0.00

MS. PAC-MAN PACMAN 1988 BOXED ATARI 2600 7800 $0.00

NEW REALSPORTS BASEBALL 1988 BOX ATARI 2600 7800 RARE $0.00

Fred and Friends Hot Head Pac Man $7.65 Pot holder in pac man shape100-Percent siliconeIconoc pac man with game board interior designDish washer safe Fred and Friends. He’s a mouth with a new mission. Pac-Man is back, and he’s ready to gobble up your hot pots and pans. Our newest all-silicone Hothead is happy to hang out in your kitchen and bring abck fond memories of your misspent hours at the game console. Individual clear box….

Fred and Friends Ice Invaders $14.99 Ice Invaders This fantastic Ice Invaders Ice Tray is full of your favourite little pixelated aliens, ready to score their way into your favourite cold beverages. Yes, Space Invaders is now over 30 years old and to celebrate, we bring you this fantastic novelty ice tray! The tray itself is made from soft, flexible silicone, making it easy to push out each of the Space Invaders. Great gifts for retr…

Atari Game Lover Green Pint Glass $9.99 Look out all you Atari Game lovers, here ’s the perfect glass for you. Green heavy duty pint glass. Measures 5.75″ high and 3″ wide in diameter….

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Asteroids Wall Stickers $45.00 Your mission: as you fly through space, shoot and destroy as many asteroids, and the occasional flying saucer, as possible while keeping your ship from being hit. Now, watch out! Made with blik Re-Stik, these movable and reusable decals are based on the same 8-bit graphics from the original Asteroids arcade game. This is an official Atari licensed product.65 movable decals per package 21 va…

Centipede Wall Stickers $45.00 Can you prevent a centipede attack before it reaches the bottom of the garden? Get ready to shoot ‘em up. Made with blik Re-Stik, these movable and reusable decals are based on the same 8-bit graphics from the original Centipede arcade game. This is an official Atari licensed product.97 movable decals per package 24 4″ centipede graphics printed on clear 35 various sized mushrooms printed…

Pong Wall Stickers $29.99 Introduced in 1972, Pong quickly became a video game legend. Now you can become a legend in your own home by defeating your opponent by just peeling and sticking.This is an official Atari licensed product.50 decals per package 30 2″ center divider graphics 10 12″ high numbers 4 6″ paddles 6 various sized gameplay graphics…

Hatari! $3.65 Howard Hawks’s 1962 adventure-comedy is basically the same, loosely plotted movie Hawks made over and over again for decades. A collection of professionals with a common goal–in this case, animal trapping in Tanganyika–forms a pocket community and holds each other to high standards in their work. This is a film about camaraderie, crisp banter, romance, and exciting action (the animal sequences a…

Ballblazer $57.18 Used – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of

Ballblazer $62.23 Used – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of

Ballblazer $85.2 New – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of t

Ballblazer $69.6 Used – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of

Ballblazer $66.05 Used – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of

Ballblazer $84.49 Used – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of

Ballblazer $69.6 New – High Quality Content by WIKIPEDIA articles! Ballblazer is a 1984 computer game created by Lucasfilm Games (later LucasArts Entertainment). It was originally released for the Atari 8-bit systems, such as the Atari 800 and the Atari 5200. It was also ported to other popular platforms of the day, such as the Apple II, ZX Spectrum (by Dalali Software Ltd), Amstrad CPC, Commodore 64, Atari 7800, and the NES. The Atari 800 version was called Ballblaster during development – pirated versions of t

007: Licence to Kill $78 New – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 007: Licence to Kill is a 1989 video game based on the James Bond film of the same name, developed by Quixel and published by Domark in 1989. It was originally released for DOS and then ported to the Amiga, Amstrad CPC, Atari ST, BBC Micro, Commodore 64, MSX and ZX Spectrum. The game’s storyline closely follows that of the film, and consists of six scenes in which

007: Licence to Kill $78 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 007: Licence to Kill is a 1989 video game based on the James Bond film of the same name, developed by Quixel and published by Domark in 1989. It was originally released for DOS and then ported to the Amiga, Amstrad CPC, Atari ST, BBC Micro, Commodore 64, MSX and ZX Spectrum. The game’s storyline closely follows that of the film, and consists of six scenes in whic

10 Starter Programs From Family Computing: for Apple, Atari, Commodore 64 and Vic-20, Ti, Timex and Trs-80 $1.99 Used

100 Computer Games to Play Before You Die $9.99 From unforgettable classics such as Donkey Kong and Space Invaders to such modern phenomena as Grand Theft Auto and Wii Sports—the genuine masterpieces of computer games Pac-Man, Space Invaders, Sonic the Hedgehog, Prince of Persia—computer games have been drawing people in for decades. But which of the vast array are true classics worth becoming addicted to? From the halcyon days of pixilated, one-dimensional blobs charging around a maze to escape from ghosts, to contemporary fully interactive adventures, computer games expert Steve Bowden analyzes the 100 games that comprise his shortlist. Both nostalgic players with a penchant for Atari or whether Mario Kart fanatics who revel in the thrill of the race in Mario Kart will find something they love in this fun and informative book.

100 Computer Games to Play Before You Die $12.95 From unforgettable classics such as Donkey Kong and Space Invaders to such modern phenomena as Grand Theft Auto and Wii Sports—the genuine masterpieces of computer games Pac-Man, Space Invaders, Sonic the Hedgehog, Prince of Persia—computer games have been drawing people in for decades. But which of the vast array are true classics worth becoming addicted to? From the halcyon days of pixilated, one-dimensional blobs charging around a maze to escape from ghosts, to contemporary fully interactive adventures, computer games expert Steve Bowden analyzes the 100 games that comprise his shortlist. Both nostalgic players with a penchant for Atari or whether Mario Kart fanatics who revel in the thrill of the race in Mario Kart will find something they love in this fun and informative book.

100 Computer Games to Play Before You Die $12.95 From unforgettable classics such as Donkey Kong and Space Invaders to such modern phenomena as Grand Theft Auto and Wii Sports–the genuine masterpieces of computer games Pac-Man, Space Invaders, Sonic the Hedgehog, Prince of Persia–computer games have been drawing people in for decades. But which of the vast array are true classics worth becoming addicted to? From the halcyon days of pixilated, one-dimensional blobs charging around a maze to escape from ghosts, to contemporary fully interactive adventures, computer games expert Steve Bowden analyzes the 100 games that comprise his shortlist. Both nostalgic players with a penchant for Atari or whether Mario Kart fanatics who revel in the thrill of the race in Mario Kart will find something they love in this fun and informative book.

1001 Things to Do with Your Atari St $29.99 Used

1001 Things to Do with Your Atari St $42.56 Used

1001 Videogames: To Play Before You Die $25.16 Used – In fewer than fifty years video games have become one of the most popular forms of entertainment, but which are the best games, the ones you must play? Video game expert Tony Mott presents 1001 of the best video games from around the world and on all formats, from primitive pioneering consoles like Atari’s VCS to modern-day home entertainment platforms such as Sony’s PlayStation 3. Each entry includes an illustrated screenshot of the game in action, along with details of its original rele

101 Atari Computer Programming Tips & Tricks $2.66 Used

101 Programming Surprises & Tricks for Your Atari Computer $59.98 Used

101 programming surprises & tricks for your IBM PC, Apple II/IIe, Atari & TRS-80 computers $0.99 Used

101 programming surprises & tricks for your IBM PC, Apple II/IIe, Atari & TRS-80 computers $0.99 Used