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Apple IIGS



 
 
The Apple , the fifth model inception of the Apple II, was the most powerful member of the Apple II series of personal computers
Microcomputer

A microcomputer is a computer with a microprocessor as its central processing unit. Another general characteristic of these computers is that they occupy physically small amounts of space when compared to mainframe computer and minicomputers....
 made by Apple Computer. At the time of its release, it was capable of advanced color graphics
Graphics

Graphics are visual presentations on some surface, such as a wall, canvas, computer screen, paper, or stone to brand, inform, illustrate, or entertain....
 and then-state-of-the-art sound
Sound

Sound is vibration transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a threshold of hearing to be heard, or the sensation stimulated in organs of hearing by such vibrations....
 synthesis that surpassed those of most other computers, including the black and white Macintosh
Macintosh

File:Imac alu.pngMacintosh, commonly shortened to Mac, is a brand name which covers several lines of personal computers designed, developed, and marketed by Apple Inc....
 (apart from a lower vertical resolution). "GS" referred to its enhanced graphics and sound capabilities, which greatly surpassed previous models of the line.

The machine was a radical departure from any previous Apple II, with its true 16-bit architecture, increased processing speed, direct access to megabytes of RAM, wavetable music synthesizer, graphical user interface
Graphical user interface

A graphical user interface is a type of user interface which allows people to human-computer interaction such as computers; hand-held devices such as MP3 Players, Portable Media Players or Gaming devices; household appliances and office equipment....
, and mouse
Mouse (computing)

In computing, a mouse is a pointing device that functions by detecting dimension motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons....
.






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The Apple , the fifth model inception of the Apple II, was the most powerful member of the Apple II series of personal computers
Microcomputer

A microcomputer is a computer with a microprocessor as its central processing unit. Another general characteristic of these computers is that they occupy physically small amounts of space when compared to mainframe computer and minicomputers....
 made by Apple Computer. At the time of its release, it was capable of advanced color graphics
Graphics

Graphics are visual presentations on some surface, such as a wall, canvas, computer screen, paper, or stone to brand, inform, illustrate, or entertain....
 and then-state-of-the-art sound
Sound

Sound is vibration transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a threshold of hearing to be heard, or the sensation stimulated in organs of hearing by such vibrations....
 synthesis that surpassed those of most other computers, including the black and white Macintosh
Macintosh

File:Imac alu.pngMacintosh, commonly shortened to Mac, is a brand name which covers several lines of personal computers designed, developed, and marketed by Apple Inc....
 (apart from a lower vertical resolution). "GS" referred to its enhanced graphics and sound capabilities, which greatly surpassed previous models of the line.

The machine was a radical departure from any previous Apple II, with its true 16-bit architecture, increased processing speed, direct access to megabytes of RAM, wavetable music synthesizer, graphical user interface
Graphical user interface

A graphical user interface is a type of user interface which allows people to human-computer interaction such as computers; hand-held devices such as MP3 Players, Portable Media Players or Gaming devices; household appliances and office equipment....
, and mouse
Mouse (computing)

In computing, a mouse is a pointing device that functions by detecting dimension motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons....
. While still maintaining full backwards compatibility with earlier Apple II models, it blended the Apple II and aspects of Macintosh technology into one. The Apple set forth a promising future and evolutionary advancement of the Apple II line, but Apple paid it relatively little attention as the company increasingly focused on the Macintosh platform.

The Apple was the first computer produced by Apple to use a color graphical user interface
Graphical user interface

A graphical user interface is a type of user interface which allows people to human-computer interaction such as computers; hand-held devices such as MP3 Players, Portable Media Players or Gaming devices; household appliances and office equipment....
, as well as the "Platinum" (light grey) color scheme and the Apple Desktop Bus
Apple Desktop Bus

Apple Desktop Bus is an obsolete serial communications computer bus connecting low-speed devices to computers. Used primarily on the Apple Macintosh platform, ADB equipment is still available but not supported by most Apple hardware manufactured since 1999....
 interface for keyboards, mice, and other input devices. It was also the first personal computer to come with a built-in "wavetable" sample-based synthesizer
Sample-based synthesis

Sample-based synthesis is a form of audio synthesis that can be contrasted to either subtractive synthesis or additive synthesis. The principal difference with sample-based synthesis is that the seed waveforms are sample d sounds or instruments instead of fundamental waveforms such as the saw waves of subtractive synthesis or the sine of add...
 chip, utilizing technology from Ensoniq
Ensoniq

Ensoniq Corp. was an United States electronics manufacturer, best known throughout the mid 1980s and 1990s for its musical instruments, principally Sampler s and synthesizers....
. The machine outsold all other Apple products, including the Macintosh, during its first year in production.

Background

The was released September 15, 1986. It was intended to compete with personal computers such as the Commodore Amiga and Atari ST
Atari ST

The Atari ST is a home computer/personal computer that was commercially available from 1985 to the early 1990s. It was released by Atari Corporation in 1985....
 at the time of its release and was somewhat popular with schools, but Apple failed to promote and update the , preferring to focus on the Macintosh instead. The lacked compelling features over its competitors and increasingly fell behind other personal computers over its lifetime, and Apple ceased production of it in December 1992.

Hardware features

The Apple was an innovative computer with many improvements over the older Apple IIe
Apple IIe

The Apple IIe is the third model in the Apple II series of personal computers produced by Apple Computer. The e in the name stands for enhanced, referring to the fact that several popular features were now built-in that were only available as upgrades and add-ons in earlier models....
 and Apple IIc
Apple IIc

The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer?s first endeavor to produce a portable computer....
. It emulated its predecessors by utilising a custom chip
Integrated circuit

In electronics, an integrated circuit is a miniaturized electronic circuit that has been manufactured in the surface of a thin Wafer of semiconductor material....
 called the Mega II
Mega II

The Mega II is a custom integrated circuit from Apple Computer used in some of their Apple II product line. It was used particularly in the Apple IIGS microcomputer, and an updated version, called the "Gemini" chip, was used in the Apple IIe Card for the Macintosh LC....
 and used the new Western Design Center
Western Design Center

The Western Design Center , located in Mesa, Arizona, United States, is a company developing and manufacturing MOS Technology 65xx-based microprocessors, microcontrollers , and related support chips....
 65816 16-bit
16-bit

16-bit architectureThe HP 2100#Descendants and variants , introduced in 1975, was the world's first 16-bit microprocessor.Prominent 16-bit processors include the PDP-11, Intel 8086, Intel 80286 and the WDC 65C816....
 microprocessor
Microprocessor

A microprocessor incorporates most or all of the functions of a central processing unit on a single integrated circuit . The first microprocessors emerged in the early 1970s and were used for electronic calculators, using Binary-coded decimal arithmetic on 4-bit Word ....
 running at 2.8 MHz, which was faster than the 8-bit
8-bit

Eight-bit CPUs normally use an 8-bit data bus and a 16-bit address bus which means that their address space is limited to 64 KBs. This is not a "natural law", however, so there are exceptions....
 6502
MOS Technology 6502

The MOS Technology 6502 is an 8-bit microprocessor that was designed by Chuck Peddle and Bill Mensch for MOS Technology in 1975. When it was introduced, it was the least expensive full-featured central processing unit on the market by a considerable margin, costing less than one-sixth the price of competing designs from larger companies such...
 and 65C02 processors used in earlier Apple IIs and also allowed the to use more RAM.

The also included enhanced graphics and sound, which led to its GS name. Its graphics were the best of the Apple II series, with new Super High Resolution video modes. These included a 640×200-pixel mode with 2-bit palletized color and a 320×200-pixel mode with 4-bit
4-bit

The Intel 4004, the world's first commercially available single-integrated circuit microprocessor, was a 4-bit central processing unit. The F-14 Tomcat's Central Air Data Computer was created a year before the 4004, but its existence was Classified information by the United States Navy until 1997....
 palletized color, both of which could dip in to a 4,096 color palette. By changing the palette on each scanline, it was possible to display up to 256 colors or more per screen, which was quite commonly seen within game and graphic design
Graphic design

The term graphic design can refer to a number of artistic and professional disciplines which focus on visual communication and presentation. Various methods are used to create and combine symbols, images and/or words to create a visual representation of ideas and messages....
 software. Through some clever programming, it was possible to display as many as 3,200 colors at once. When first introduced, Apple's user interface known as MouseDesk and the system Demo were both in black and white only. Users did not see color until an application which took advantage of the new features was launched. Audio was generated by a built-in sound and music synthesizer in the form of the Ensoniq
Ensoniq

Ensoniq Corp. was an United States electronics manufacturer, best known throughout the mid 1980s and 1990s for its musical instruments, principally Sampler s and synthesizers....
 Digital Oscillator Chip (DOC), which had its own dedicated RAM
Ram

Ram, ram, or RAM as a non-acronymic wordAs a non-acronymic word Ram, ram, or RAM may refer to:...
 and 32 separate channels of sound, which were paired to produce 15 voices, in stereo
Stereophonic sound

Stereophonic sound, commonly called stereo, is the reproduction of sound, using two or more independent Sound recording and reproduction channels, through a symmetrical configuration of loudspeakers, in such a way as to create a pleasant and natural impression of sound heard from various directions, as in natural hearing....
 audio.

The could support both 5¼-inch and 3½-inch floppy disk
Floppy disk

A floppy disk is a data storage medium that is composed of a disk of thin, flexible magnetic storage medium encased in a square or rectangle plastic shell....
s and, like the IIe before it, had several expansion slots. These included seven general-purpose expansion slots compatible with those on the Apple II, II+, and IIe, plus a memory expansion slot that could be used to add up to 8 MB
Megabyte

Megabyte is a SI prefix-multiple of the unit byte for digital information computer storage or transmission and is equal to 106 bytes....
 of RAM. The , like the IIc, also had dedicated ports for external devices. These included a port to attach floppy disk drives, two serial port
Serial port

In computing, a serial port is a serial communication physical interface through which information transfers in or out one bit at a time ....
s for devices such as printer
Computer printer

File:Lexmark X5100 Series.jpgIn computing, a printer is a peripheral which produces a hard copy of documents stored in computer file form, usually on physical print media such as paper or Transparency ....
s and modem
Modem

Modem is a peripheral device that modulation an analog carrier wave Signal to encode digital information, and also demodulation such a carrier signal to decode the transmitted information....
s (which could also be used to connect to a LocalTalk
LocalTalk

LocalTalk is a particular implementation of the physical layer of the AppleTalk Computer network system from Apple Computer. LocalTalk specifies a system of shielded twisted pair cabling, plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s....
 network), an Apple Desktop Bus
Apple Desktop Bus

Apple Desktop Bus is an obsolete serial communications computer bus connecting low-speed devices to computers. Used primarily on the Apple Macintosh platform, ADB equipment is still available but not supported by most Apple hardware manufactured since 1999....
 port to connect the keyboard
Keyboard (computing)

In computing, a keyboard is an input device, partially modeled after the Typewriter#Keyboard layout, which uses an arrangement of buttons or Push-button, which act as mechanical levers or electronic switches....
 and mouse
Mouse (computing)

In computing, a mouse is a pointing device that functions by detecting dimension motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons....
, and composite
Composite video

Composite video is the format of an analog television signal before it is combined with a sound signal and modulation onto an Radio Frequency carrier wave....
 and RGB video ports. These ports were associated with the slots, so for example using a card in slot 1 would mean the printer port was disabled.

The also supported booting from an AppleShare server, via the AppleTalk protocol, over LocalTalk cabling. Shortly afterward, so could the IIe, via the "Apple IIe Workstation Card". This was over a decade before NetBoot
NetBoot

NetBoot is a technology from Apple Inc. that enables New World ROM Macs to boot from a network.A disk image with a copy of Mac OS X or Mac OS 8/Mac OS 9 is stored on a server ....
 offered the same capability to computers from Mac OS 8 and beyond.

Graphics modes

In addition to supporting all graphics modes of previous Apple II models, the Apple introduced several new ones through a custom Video Graphics Chip (VGC), all of which used a 12-bit palette for a total of 4096 possible colors, though not all 4096 colors could appear onscreen at the same time.
  • 320×200 pixels with a single palette of 16 colors.
  • 320×200 pixels with up to 16 palettes of 16 colors. In this mode, the VGC holds 16 separate palettes of 16 colors in its own memory. Each of the 200 scan lines can be assigned any one of these palettes allowing for up to 256 colors on the screen at once. This mode is handled entirely by the VGC with no CPU assistance, making it perfect for games and high-speed animation.
  • 320×200 pixels with up to 200 palettes of 16 colors. In this mode, the CPU assists the VGC in swapping palettes in and out of the video memory so that each scan line can have its own palette of 16 colors allowing for up to 3200 colors on the screen at once. This mode is computationally-intensive however, and is only suitable for viewing graphics or in paint programs.
  • 320×200 pixels with 15 colors per palette, plus a "fill mode" color. In this mode, color 0 in the palette is replaced by the last non-zero color pixel displayed on the scan line (to the left), allowing fast solid-fill graphics (drawn with only the outlines).
  • 640×200 pixels with four pure colors. This mode is generally only used for ensuring that the Apple logo and menu bar retain their colors in Desktop applications.
  • 640×200 pixels with 16 dithered colors. In this mode, two palettes of four pure colors each are used in alternating columns. The hardware then dithers the colors of adjacent pixels to create 16 total colors on the screen. This mode is generally used for programs requiring finer detail such as word processors and the Finder.


Each scan line on the screen could independently select either 320- or 640-mode, fill mode (320-mode only), and any of the 16 palettes, allowing graphics modes to be mixed on the screen. This is most often seen in graphics programs where the menu bar is constantly in 640-pixel resolution and the working area's mode can be changed depending on the user's needs.

Like other Apple computers, the lacked hardware sprites
Sprite (computer graphics)

In computer graphics, a sprite is a two-dimensional/three-dimensional or animation that is integrated into a larger scene.Sprites were originally invented as a method of quickly compositing several images together in two-dimensional video games using special hardware....
.

Later on, video cards such as Sequential Systems' Second Sight added SVGA modes allowing 24-bit color to the Apple .

Audio features

The Apple ' sound was provided by an included Ensoniq
Ensoniq

Ensoniq Corp. was an United States electronics manufacturer, best known throughout the mid 1980s and 1990s for its musical instruments, principally Sampler s and synthesizers....
 ES5503 DOC wavetable sound chip, the same chip used in Ensoniq Mirage
Ensoniq Mirage

The Ensoniq Corporation's Mirage was an 8-bit sampler introduced in 1985. Priced below $2000 with features previously only found on more expensive samplers like the Fairlight CMI, it became a best seller....
 and Ensoniq ESQ-1
Ensoniq ESQ-1

Ensoniq ESQ-1 is a Hybrid computer digital-analog synthesizer released by Ensoniq in 1986. The ESQ-1 featured 8 voices with 3 digital oscillators per voice....
 professional-grade synthesizers. The chip allowed for 32 separate channels of sound, though most software paired them into 16 stereo voices, as did most of the standard tools of the operating system (the MIDISynth Tool Set grouped 4 channels per voice, for a limit of 7-voice audio). The is often referred to as a "fifteen-voice system", though, one stereo voice is reserved by the OS at all times for timing and system sounds. Software that doesn't use the OS, or uses custom-programmed tools (most games and demos do this), can access the chip directly and take advantage of all 32 voices.

A standard 1/8" headphone jack was provided on the back of the case, and standard stereo computer speakers could be attached there. However, it provided only mono sound through this jack, and a third party adapter card was required to produce true two-channel stereo, despite the fact the Ensoniq and virtually all native software produced stereo audio (stereo audio was essentially built-in to the machine, but had to be demultiplexed by third party cards). Applied Engineering
Applied Engineering

Applied Engineering, headquartered in Carrollton, TX, was a leading third-party hardware vendor for the Apple II series of computers from the early 1980s until the mid-1990s....
's SonicBlaster was one of a few developed cards for this purpose.

Expansion capabilities

The was highly expandable. The expansion slots could be used for a variety of purposes, greatly increasing the computer's capabilities. SCSI
SCSI

Small Computer System Interface, or SCSI , is a set of standards for physically connecting and transferring data between computers and peripheral devices....
 host adaptors could be used to connect external SCSI devices such as hard drives and CD-ROM drives. Other mass storage devices such as adaptors supporting more recent internal 2.5-inch IDE hard drives could also be used. Another common class of Apple IIGS expansion cards
Apple II peripheral cards

One of the early strengths of the Apple II line, and one of the most important factors contributing to its success, was its open architecture, epitomized by its generous number of internal expansion card slots, or simply expansion slots. These slots accommodated a host of Apple II peripheral cards , which added to and extended the functi...
 was accelerator cards, such as Applied Engineering
Applied Engineering

Applied Engineering, headquartered in Carrollton, TX, was a leading third-party hardware vendor for the Apple II series of computers from the early 1980s until the mid-1990s....
's TransWarp GS, replacing the computer's original processor with a faster one. Applied Engineering
Applied Engineering

Applied Engineering, headquartered in Carrollton, TX, was a leading third-party hardware vendor for the Apple II series of computers from the early 1980s until the mid-1990s....
 developed the PC Transporter that was essentially an IBM-XT PC on a card. A variety of other cards were also produced, including ones allowing new technologies such as 10BASE-T
10BASE-T

Ethernet over twisted pair refers to the use of a pair of copper cables, twisted around each other, for the physical layer of an Ethernet network ....
 Ethernet
Ethernet

Ethernet is a family of Data frame-based computer networking technologies for local area networks . The name comes from the physical concept of the Luminiferous aether....
 and CompactFlash
CompactFlash

CompactFlash is a mass storage device format used in portable electronic devices. For storage, CompactFlash typically uses flash memory in a standardized enclosure....
 cards to be used on the .

Development and codenames

Apple's first internal project to develop a next-generation Apple II based on the 65816 was known as the "IIx". The IIx project, though, became bogged down when it attempted to include various coprocessors allowing it to emulate other computer systems. Early samples of the 65816 were also problematic. These problems led to the cancellation of the IIx project, but somewhat later a new project was formed to produce an updated Apple II. This project, which led to the released , was known by various codenames while the new system was being developed, including "Phoenix", "Rambo", "Gumby", and "Cortland". There were rumors of several vastly enhanced prototypes built over the years at Apple but none were ever released. Only one, the "Mark Twain", has been revealed so far.

Release

During its introduction, Apple sold a specialized set of Bose
Bose

Bose may refer to:* Bose Corporation, an audio company* Bose-Einstein condensate, a state of matter predicted by Satyendra Bose and Albert Einstein...
 Roommate speakers that were platinum colored with the Apple logo next to the Bose on each front speaker grille.

Some design features from the ill-fated Apple III
Apple III

The Apple III was a personal computer aimed at business users, manufactured and sold by Apple Inc. from May, 1980 until its discontinuation on April 24, 1984....
 lived on in the Apple , such as GS/OS borrowing elements from SOS (including, by way of ProDOS, the SOS filesystem), a unique keyboard feature for dual-speed arrow keys, and colorized ASCII text.

An easter egg
Easter egg (media)

A virtual Easter egg is an intentional hidden message, in-joke or feature in an object such as a film, book, Compact disc, DVD, computer program, web page or video game....
 (activated by Command-Option-Control-N) in ROM 3 lists the members of development team, and plays an audio clip of them shouting "Apple II!".

Limited Edition ("Woz" signed case)

As part of a commemorative celebration marking the 10th anniversary of the Apple II series' development, as well Apple Computer itself celebrating the same age anniversary, a special limited edition was introduced at product launch. Specifically the first 50,000 Apple IIGS's manufactured had a reproduced copy of Steve Wozniak
Steve Wozniak

Stephen Gary "Woz" Wozniak is an United States computer engineer who founded Apple Computer with Steve Jobs. His inventions and machines are credited with contributing significantly to the personal computer revolution of the 1970s....
's signature ("Woz") at the front right corner of the case, with a dotted line and the phrase "Limited Edition" printed just below it. Owners of the Limited Edition, after mailing in their Apple registration card, were mailed back a Certificate of Authenticity signed by Wozniak and 12 key Apple engineers, as well as a personal letter from Steve Wozniak himself (both machine reproduced). Seeing as the difference between standard and Limited Edition machines were purely cosmetic, many users were able to "convert" to the Limited Edition by merely swapping the case lid from an older, existing machine. While of nostalgic value to Apple II users and collectors, presently these stamped lid cases are not considered rare nor do they have any particular monetary worth.

Influence on later computers

The Apple Desktop Bus, which for a long time was the standard for most input peripherals for the Macintosh, first appeared on the Apple . In addition, the other standardized ports and addition of SCSI set a hallmark which allowed Apple for the first time to consolidate their peripheral offerings across both the Apple II and Macintosh product lines, permitting one device to be compatible with multiple disparate computers.

The was also the first Apple product to bear the new brand-unifying color scheme, a warm gray color Apple dubbed "Platinum". This color would remain the Apple standard used on the vast majority of all products for the next decade. The was also the second major computer design after the Apple IIc by Apple's outsourced industrial designer Frogdesign and together with its new corporate color and matching peripherals, officially ushered in the Snow White design language
Snow White design language

The Snow White design language was an design language developed by frog design inc. founded by Hartmut Esslinger. It was used by Apple Computer from 1984 to 1990....
 which was used exclusively for the next 5 years and made the Apple product line instantly recognizable around the world.

The inclusion of a professional-grade sound chip in the Apple was hailed by developers and users both, and hopes were high that it would be added to the Macintosh. However, it drew a lawsuit from Apple Records
Apple Records

Apple Records is a record label founded by The Beatles in 1968, as a division of Apple Corps. It was initially intended as a creative outlet for the Beatles, both as a group and individually, plus a selection of other artists including Mary Hopkin, James Taylor, Badfinger, and Billy Preston....
. As part of an earlier trademark dispute with the record company, Apple Computer had agreed not to release music-related products. Apple Records considered the inclusion of the Ensoniq
Ensoniq

Ensoniq Corp. was an United States electronics manufacturer, best known throughout the mid 1980s and 1990s for its musical instruments, principally Sampler s and synthesizers....
 chip in the as a violation of that agreement. Though the was allowed to keep the Ensoniq, Apple has not included dedicated hardware sound synthesizers in any of its Macintosh models since (though of course, third-party products exist).

Software features

Broadly speaking, software that runs on the Apple can be divided into two major categories: 8-bit software compatible with earlier Apple II systems such as the IIe and IIc, and 16-bit -specific software, most of which runs under the Apple System Software and takes advantage of its advanced features, including a near clone of the Macintosh graphical user interface
Graphical user interface

A graphical user interface is a type of user interface which allows people to human-computer interaction such as computers; hand-held devices such as MP3 Players, Portable Media Players or Gaming devices; household appliances and office equipment....
.

8-bit Apple II compatibility

The Apple was almost completely backward compatible with older Apple II computers, so that users wouldn't be left with large libraries of useless software. The could run all of Apple's earlier Apple II operating system
Operating system

An operating system is an interface between hardware and applications; it is responsible for the management and coordination of activities and the sharing of the limited resources of the computer....
s: Apple DOS
Apple DOS

Apple DOS refers to operating systems for the Apple II series of Personal computer from 1979 through early 1983. Apple DOS had three major releases: DOS 3.1, DOS 3.2, and DOS 3.3; each one of these three releases was followed by a second, minor "bug-fix" release, but only in the case of Apple DOS 3.2 did that minor release receive its own ver...
, ProDOS
ProDOS

ProDOS was the name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, was the last official operating system usable by all Apple II series computers, and was distributed from 1983 to 1993....
 8, and Apple Pascal
Apple Pascal

Apple Pascal was a language and operating system based on the UCSD Pascal system.Apple Pascal refers to an operating system for the Apple II family of computers released in August of 1979 between the Apple DOS 3.2 and 3.3 versions....
. It was also compatible with nearly all 8-bit software running under those systems. Like the Apple II+, IIe, and IIc, the also included Applesoft BASIC and a monitor (which could be used for very simple assembly language programming) in ROM, so they could be used even with no operating system loaded from disk. The 8-bit software ran twice as fast unless the user turned down the processor speed in the control panel.

Apple System Software

The Apple System Software utilized a graphical user interface (GUI) very similar to that of the Macintosh and somewhat like GEM
Graphical Environment Manager

GEM was a windowing system created by Digital Research for use with the CP/M operating system on the Intel 8088 and Motorola 68000 microprocessors....
 for PCs and the operating systems of contemporary Atari and Amiga computers. Initial versions of the System Software were based on the ProDOS
ProDOS

ProDOS was the name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, was the last official operating system usable by all Apple II series computers, and was distributed from 1983 to 1993....
 16 operating system, which was based on the original ProDOS operating system for 8-bit Apple II computers. Although it was modified so that 16-bit Apple software could run on it, ProDOS 16 was written largely in 8-bit code and did not take full advantage of the 's capabilities. Later System Software versions (starting with version 4.0) replaced ProDOS 16 with a new 16-bit operating system known as GS/OS
GS/OS

GS/OS is an operating environment developed by Apple Computer for its Apple IIGS personal computer that uses the ProDOS filing system. It provides facilities for accessing the file system, controlling input/output devices, loading and running program files, and a system allowing programs to handle interrupts and signals....
. It better utilized the unique capabilities of the and included many valuable new features. The Apple System Software was substantially enhanced and expanded over the years during which it was developed, culminating in its final version, System 6.0.1, which was released in 1993.

Graphical user interface
The system software provided a mouse
Mouse (computing)

In computing, a mouse is a pointing device that functions by detecting dimension motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons....
-driven graphical user interface using concepts such as window
Window (computing)

In computing, a window is a visual area, usually rectangular in shape, containing some kind of user interface, displaying the output of and allowing input for one of a number of simultaneously running computer processes....
s, menus, and icons. This was implemented by a '"toolbox" of code, some of which resided in the computer's ROM and some of which was loaded from disk. The GUI was very similar to that of early Macintoshes. One major application could run at a time, although other smaller programs known as Desk Accessories could be used simultaneously. The had a Finder application very similar to the Macintosh's, which allowed the user to manipulate files and launch applications. By default, the Finder was displayed when the computer started up and whenever the user quit an application that had been started from it, although the startup application could be changed by the user.

Gsos Desktop Fullsize

Extensibility
The System Software could be extended through various mechanisms. New Desk Accessories were small programs ranging from a calculator to simple word processor
Word processor

A word processor is a computer Application software used for the production of any sort of printable material.Word processor may also refer to an obsolete type of stand-alone office machine, popular in the 1970s and 80s, combining the keyboard text-entry and printing functions of an electric typewriter with a dedicated computer for th...
s that could be used while running any standard desktop application. Classic Desk Accessories also served as small programs available while running other applications, but they used the text screen and could be accessed even from non-desktop applications. Control Panels and initialization files were other mechanisms that allowed various functions to be added to the system. Finder Extras permitted new capabilities to be added to the Finder, drivers could be used to support new hardware devices, and users could also add "tools" that provided various functions that other programs could utilize easily. These features could be used to provide features never planned for by the system's designers, such as a TCP/IP
Internet protocol suite

The Internet Protocol Suite is the set of communications protocols used for the Internet and other similar networks. It is named from two of the most important protocols in it: the Transmission Control Protocol and the Internet Protocol , which were the first two networking protocols defined in this standard....
 stack known as "Marinetti."

Multitasking capability

An interesting feature of the was that multitasking
Computer multitasking

In computing, multitasking is a method by which multiple tasks, also known as Computer process, share common processing resources such as a Central processing unit....
 was possible. A UNIX
Unix

Unix is a computer operating system originally developed in 1969 by a group of American Telephone & Telegraph employees at Bell Labs, including Ken Thompson , Dennis Ritchie, Douglas McIlroy, and Joe Ossanna....
-like multitasking kernel was produced, called GNO/ME, which ran under the GUI and provided preemptive
Preemption (computing)

Preemption in computing is the act of temporarily interrupting a task being carried out by a computer, without requiring its cooperation, and with the intention of resuming the task at a later time....
 multitasking. In addition, a system called The Manager could be used to make the Finder more like the one on the Macintosh, allowing major software (other than just the "accessory" programs) to run simultaneously through cooperative multitasking
Computer multitasking

In computing, multitasking is a method by which multiple tasks, also known as Computer process, share common processing resources such as a Central processing unit....
.

Upgrading from an Apple IIe

Iigs Upgrade
Upon its release in September 1986, Apple announced it would be making an upgrade kit to upgrade an Apple IIe
Apple IIe

The Apple IIe is the third model in the Apple II series of personal computers produced by Apple Computer. The e in the name stands for enhanced, referring to the fact that several popular features were now built-in that were only available as upgrades and add-ons in earlier models....
 to a available for purchase. The upgrade replaced the Apple IIe motherboard
Motherboard

A motherboard is the central printed circuit board in some complex electronic systems, such as modern personal computers. The motherboard is sometimes alternatively known as the mainboard, system board, or, on Apple Inc....
 for a 16-bit Apple motherboard. Users would bring their Apple IIe machines into an authorized Apple dealership, where the IIe motherboard and lower baseboard of the case were swapped for an Apple motherboard with a new baseboard
Baseboard

In architecture, a baseboard is a board, covering the lowest part of an interior wall. Its purpose is to cover the joint between the wall surface and the floor....
 (with matching cut-out
Cut-out

Cut-out may refer to:*Cutout animation*Cutout , a combination fuse and knife switch used on power poles*Cut-out , a mechanism used to pass information...
s for the new built-in ports). New metal sticker ID badges replaced those on the front of the Apple IIe, rebranding the machine. Retained were the upper half of the IIe case, the keyboard, speaker and power supply. Original motherboards (those produced between 1986 to mid 1989) had electrical connections for the IIe power supply
Power supply

Power supply is a reference to a source of electrical power. A device or system that supplies electrical or other types of energy to an output External electric load or group of loads is called a power supply unit or PSU....
 and keyboard present, although only about half produced had the physical plug connectors factory pre-soldered in, which were mostly reserved for the upgrade kits.

The upgrade cost US$500, plus the trade-in of the user's existing Apple IIe motherboard.
Iie To Iigs Upgrade Ports
It proved unpopular as it did not include a mouse (which was an essential part of the new machine, much like the Macintosh); the keyboard, although functional, did not mimic all the features and functions of the Apple Desktop Bus
Apple Desktop Bus

Apple Desktop Bus is an obsolete serial communications computer bus connecting low-speed devices to computers. Used primarily on the Apple Macintosh platform, ADB equipment is still available but not supported by most Apple hardware manufactured since 1999....
 keyboard, as well as lacking a numeric keypad; and some cards designed for the new 16-bit machine did not fit in the Apple IIe's slanted case either. In the end most users found they were not saving much, once they had to purchase a 3.5 floppy drive, analog RGB monitor and mouse. Although it could use some IIe peripherals, most of them became obsolete in the upgrade due to their function being already built-in. It did however make an attractive upgrade for Apple IIe users wanting to use the machine strictly in IIe-emulation mode (ignoring the native part of the machine), which provided faster CPU operation, 256 KB
Kilobyte

Kilobyte is a unit of Computer data storage equal to either 1,024 bytes or 1,000 bytes , depending on context.It is abbreviated in a number of ways: KB, kB, K and Kbyte....
 RAM, a clock and many built-in peripherals via the back ports.

Technical specifications

Microprocessor
  • 65C816 running at 2.8 MHz
  • 16-bit internal data bus, 8-bit external
Memory
  • 1.125 MB
    Megabyte

    Megabyte is a SI prefix-multiple of the unit byte for digital information computer storage or transmission and is equal to 106 bytes....
     RAM built-in (256 KB in original)
  • 256 KB ROM built-in (128 KB in original)
  • Expandable to 8.125 MB
Video modes Emulation video:
  • 40 and 80 columns text, with 24 lines (16 selectable foreground, background, border colors)
  • Low-Resolution: 40×48 (16 colors)
  • High-Resolution: 280×192 (6 colors)
  • Double-Low-Resolution: 80×48 (16 colors)
  • Double-High-Resolution: 560×192 (16 colors)
Native video:

Super-High-Resolution (320 mode)
  • 320x200 (16 colors, selectable from 4,096 color palette)
  • 320x200 (256 colors, selectable from 4,096 color palette)
  • 320x200 (3200 colors, selectable from 4,096 color palette)
Super-High-Resolution (640 mode)
  • 640x200 (4 colors, selectable from 4,096 color palette)
  • 640x200 (16 colors, selectable from 4,096 color palette)
  • 640x200 (64 colors, selectable from 4,096 color palette)
  • 640x200 (800 colors, selectable from 4,096 color palette)
Fill-mode
  • 320x200, sections of screens filled in on-the-fly for up to 60 FPS full-screen animation
Mixed-mode
  • 320/640x200, horizontal resolution selectable on a line by line basis
Audio
  • Ensoniq 5503 Digital Oscillator Chip
  • 8-bit audio resolution
  • 64 KB dedicated sound RAM
  • 32 oscillator channels (15 voices when paired)
  • Support for 8 independent stereo speaker channels
Expansion
  • Seven Apple II Bus slots (50-pin card-edge)
Memory Expansion slot (44-pin card-edge) Internal connectors
  • Game I/O socket (16-pin DIP)
  • Ensoniq I/O expansion connector (7-pin molex)
Specialized chip controllers
  • IWM (Integrated Wozniak Machine) for floppy drives
  • VGC (Video Graphics Controller) for video
  • MEGA II (Apple IIe computer on chip)
  • Ensoniq DOC (wavetable synthesizer)
  • Zilog Z8530 SCC (serial port controller)
  • Apple Desktop Bus microcontroller
  • FPI/CYA
External connectors
  • NTSC composite video output (RCA connector); PAL composite video was not supported.
  • Joystick (DE-9)
  • Audio-out (1/8" mono phono jack)
  • Printer-serial 1 (mini-DIN8)
  • Modem-serial 2 (mini-DIN8)
  • Floppy drive (D-19)
  • Analog RGB video (D-15)
  • Apple Desktop Bus (s-video/4-pin)


Revision history

While in production between September 1986 and December 1992, the Apple remained relatively unchanged from its original inception. However, during those years, Apple did produce some maintenance updates to the system which mainly compromised of two new ROM-based updates and a revamped motherboard. It is rumored several prototypes that greatly enhanced the machines features and capabilities were designed and even built, though only one has ever been publicly exposed (i.e. the "Mark Twain"). Outlined below are only those revisions and updates officially released by Apple.

Original ROM 1 ("ROM version 00")

During the entire first year of the machine's production an early, almost beta-like, firmware revision shipped with the machine and was notably bug ridden. Some limitations were: the built-in RAM Disk
RAM disk

A RAM disk is a software layer that enables applications to transparently use RAM, often a segment of main memory, as if it were a hard disk or other secondary storage....
 couldn't be set larger than 4096 KB (even if more RAM was present), and the firmware contained the very early System 1.x toolsets. It became incompatible with most native Apple software written from late-1987 onwards, and OS support only lasted up to System 3. The startup splash screen of the original ROM only displayed the words "Apple IIgs" at the top center of the screen, in the same fashion previous Apple II models identified themselves.

Video Graphics Controller (VGC) replacement

Very early production runs of the machine had a faulty Video Graphics Controller (VGC) chip that produced strange cosmetic glitches in emulated (IIe/IIc) video modes. Specifically, the 80 columns text display and monochrome Double-High-Resolution graphics had a symptom where small flickering or static pink bits would appear between the gaps of characters and pixels. Most users noticed this when using AppleWorks
AppleWorks

AppleWorks refers to two different office suite products, both of which are now discontinued. Originally, AppleWorks was an integrated software package for the Apple II platform, released in 1984 by Apple Computer....
 classic or the Mousedesk application that was a part of System 1 and 2. Apple resolved the issue by offering a free chip swap upgrade to affected owners.

Updated ROM 2 ("ROM version 01")

In August 1987, Apple released an updated ROM that was included in all new machines and was made available as a free upgrade to all existing owners. The main feature of the new ROM was the presence of the System 2.x toolsets and several bug fixes. The upgrade was vital as software developers, including Apple, ceased support of the original ROM upon its release (most native Apple software written from late-1987 onwards would not run unless a ROM 01 or higher was present. This included the GS/OS operating system). This update also allowed up to 8128 KB for the RAM Disk, added some new features for programmers, and reported the ROM version and copyright information on the startup splash screen.

Increase standard RAM to 512 KB

In March 1988, Apple began shipping Apple units with 512 KB of RAM as standard. This was done by pre-installing the Apple Memory Expansion Card (that was once sold separately) in the memory expansion slot--the card had 256 KB of RAM on board with empty sockets for further expansion. The built-in memory on the motherboard remained at 256 KB and existing users were not offered this upgrade.

Updated ROM 3, The Apple IIgs with 1 MB of RAM

In August 1989, Apple increased the standard amount of RAM shipped in the Apple to 1.125 MB (1152 KB). This time the additional memory was built-in on the motherboard, which required layout change and allowed for other minor improvements as well. This update introduced both a new motherboard and a new ROM firmware update, however neither was offered to existing owners – even as an upgrade option (the new ROM, being larger, was incompatible with the original motherboard). Apple had cited the reason an upgrade was not being offered was on the basis that most of the features of the new machine could be obtained in existing machines by installing System 5 and a fully populated Apple Memory Expansion Card.

The new ROM firmware was now 256 KB in size and contained the System 5.x toolsets. The newer toolsets increased the performance of the machine by up to 10 percent, due to the fact less had to be loaded from disk and their highly optimized routines compared to the older toolsets (pre-GS/OS based). In addition to several bug fixes, more programmer assistance commands/features, a cleaned up Control Panel with improved mouse control, RAM Disk functionality, more flexible Appletalk support and slot mapping were added.

In terms of hardware the new motherboard was a cleaner design that drew less power and resolved audio noise issues that interfered with the Ensoniq synthesizer in the original motherboard. Over four times more RAM was built-in, with double the ROM size, and an enhanced ADB microcontroller added hardware supported sticky keys, emulated keyboard mouse and LED updating on Extended keyboards. The clock battery was now user serviceable being placed in a removable socket, and a jumper location was added to lock out the text-based Control Panel (mainly useful in school environments). Support for the Apple IIe to Apple upgrade was removed, and some cost cutting measures had some chips soldered in place rather than socketed. As the firmware only worked in this motherboard and no new firmware updates were ever issued, users commonly referred to this version of the Apple as the "ROM 3".

International versions

Like the Apple IIe
Apple IIe

The Apple IIe is the third model in the Apple II series of personal computers produced by Apple Computer. The e in the name stands for enhanced, referring to the fact that several popular features were now built-in that were only available as upgrades and add-ons in earlier models....
 and Apple IIc
Apple IIc

The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer?s first endeavor to produce a portable computer....
 built-in keyboards before it, the detached Apple IIgs keyboard differed depending on what region of the world it was sold in, with extra local language characters and symbols printed on certain keycaps (e.g. French accented characters on Canadian keyboard such as "á", "é", "ç", etc, or the British Pound
Pound sterling

----The pound sterling , subdivided into 100 pence , is the currency of the United Kingdom, its Crown dependency and the British Overseas Territories of South Georgia and the South Sandwich Islands and British Antarctic Territory....
 "£" symbol on the UK keyboard). However, unlike previous Apple II models, the layout and shape of keys were the same standard for all countries. In order to access the local character set layout and display, users would change settings in the built-in software based Control Panel, which also provides a method of toggling between 50/60 Hz video screen refresh. The composite video output was NTSC only on all ; users in PAL countries were expected to use an RGB monitor. This selectable internationalization made it quick and simple to "localize" any given machine. Also present in the settings was a QWERTY/DVORAK keyboard toggle for all countries, much like that of the Apple IIc. Outside North America the Apple shipped with a different 220v clip-in powersupply, making this and the plastic keycaps the only physical difference (and also very modular, in the sense of converting a non-localized machine to a local one).

Gus

Apple designed the Apple IIe Card
Apple IIe Card

The Apple IIe Card is, in a sense, the smallest Apple II family "computer" ever designed, though as a compatibility card it is technically not considered an...
 to transition Apple IIe customers to the Macintosh LC
Macintosh LC

The Macintosh LC was Apple Computer's product family of low-end consumer Apple Macintosh personal computers in the early 1990s. The original Macintosh LC was released in 1990 and was the first affordable color-capable Macintosh....
, particularly schools who had a large investment in Apple II software. While Apple discussed creating an LC plug-in card, they felt that the cost of selling it would be as much as an entire LC and abandoned it. However, the educational community had a substantial investment in the IIGS software as well, which made upgrading to a Macintosh a less attractive proposition than had been for the Apple IIe. As a result, Apple software designers Dave Lyons and Andy Nicholas spearheaded a program to develop a software emulator they called Gus in their spare time, which would run on the Power Macintosh
Power Macintosh

Power Macintosh, later Power Mac, is a line of Apple Macintosh workstation-class personal computers based on various models of PowerPC microprocessors that was developed, marketed, and supported by Apple Inc....
 only. Apple did not officially support the project. Nevertheless, seeing the need to help switch their educational customers to the Macintosh (as well as sell Power Macs), Apple unofficially distributed the software for free to schools and institutions that signed a non-disclosure agreement. It was never offered for public sale, but is now readily available on the internet, along with many third party Apple II emulators. Gus represents one of the few software emulators developed within Apple (officially or not), including MacWorks and Mac OS X Classic environment
Classic (Mac OS X)

Classic, or Classic Environment, was a Computer hardware and software abstraction layer in Mac OS X that allowed Application software compatible with Mac OS 9 to run on the Mac OS X operating system....
.

Notable Apple II developers

John Carmack, founder of id Software
Id Software

id Software is an American video game developer from Mesquite, Texas. The company was founded in 1991 by four members of the computer company Softdisk: game programmer John D....
, started his career by writing commercial software for the Apple . The same is true of John Romero
John Romero

Alfonso John Romero is a game designer, game programmer, and video game developer in the video game industry. He is best known as a co-founder of id Software and was the lead designer for many of their personal computer games including Wolfenstein 3D, Doom , and Quake....
 and Tom Hall
Tom Hall

Tom A. Hall is a game designer born in Wisconsin. He attended the University of Wisconsin-Madison and there received a B.S. in Computer Science....
. Wolfenstein 3D
Wolfenstein 3D

Wolfenstein 3D is a video game that is generally regarded as having popularized the first person shooter genre on the IBM PC compatible. It was created by id Software and published by Apogee Software....
, based on the Apple II originated game Castle Wolfenstein
Castle Wolfenstein

Castle Wolfenstein is a stealth game computer game, the first of its genre, developed by Muse Software for the Apple II. It was first released in 1981 and later porting to DOS, the Atari 8-bit family and the Commodore 64....
, came full circle back to the Apple II series when it was released for the Apple in 1994.

Bob Yannes, creator of the SID
MOS Technology SID

The MOS Technology 6581/8580 SID was the built-in Programmable Sound Generator chip of Commodore International's Commodore CBM-II, Commodore 64, Commodore 128 and Commodore MAX Machine home computers....
 synthesizer chip used in the Commodore 64
Commodore 64

The Commodore 64 is an 8-bit home computer released by Commodore International in August, 1982, at a price of United States dollar595. Preceded by the Commodore VIC-20 and Commodore MAX Machine, the C64 features 64 kilobytes of Random-access memory with sound and graphics performance that were superior to IBM-compatible computers of tha...
, went on to design the Ensoniq
Ensoniq

Ensoniq Corp. was an United States electronics manufacturer, best known throughout the mid 1980s and 1990s for its musical instruments, principally Sampler s and synthesizers....
 5503 DOC synthesizer used in the Apple .

Two mainstream video games, Zany Golf
Zany Golf

Zany Golf, also known as Will Harvey's Zany Golf, is a video game with a fantasy take on miniature golf, video game developer by and video game publisher by Electronic Arts....
 and The Immortal
The Immortal (computer game)

The Immortal is an isometric adventure game originally created for the Apple IIgs, which was ported to the Amiga, Atari ST, MS DOS based PCs, NES, and Sega Mega Drive....
, originated as Apple -specific games that were later ported to several platforms due to their immense popularity.

Naughty Dog
Naughty Dog

Naughty Dog is an United States video game company founded by Andy Gavin and Jason Rubin in 1986, and based in Santa Monica, California, California....
, the well known PlayStation
PlayStation

The PlayStation is a 32-bit history of video game consoles video game console released by Sony Computer Entertainment in December .The PlayStation was the first of the ubiquitous PlayStation ....
 game developer, started as an Apple game software company. Pangea Software
Pangea Software

Pangea Software is a Apple Macintosh game company based in Austin, Texas that is owned and operated by Brian Greenstone. Formed in 1987, the company began by writing a number of shareware games for the Apple IIgs computer, with their first commercial game, Xenocide, being released in 1989....
, one of the best-known and popular Macintosh game developers, also started as an Apple game software company.

Between the late 1980s to early 1990s, the Apple developed its own demoscene
Demoscene

The demoscene is a computer art subculture that specializes in producing Demo , which are non-interactive audio-visual presentations that run in Real-time computing on a computer....
 very similar in vein to that of the Amiga
Amiga

The Amiga is a family of personal computers originally developed by Amiga Corporation. Development on the Amiga began in 1982 with Jay Miner as the principal hardware designer....
 and Atari ST
Atari ST

The Atari ST is a home computer/personal computer that was commercially available from 1985 to the early 1990s. It was released by Atari Corporation in 1985....
, albeit much smaller and lesser known. The most popular demo group was called FTA (Free Tools Association) and was from France. Two of their demos (Nucleus and Modulae) were very popular and were used by Apple itself and by retailers to show off the computer.

Nintendo adopted the 65C816 as the basis for the custom CPU in the Super Nintendo Entertainment System
Super Nintendo Entertainment System

The Super Nintendo Entertainment System or Super NES is a History of video game consoles video game console that was released by Nintendo in North America, Europe, Australasia , and South America between 1990 and 1993....
. Many early SNES programmers used the Apple as a SNES game development platform to write code on.

Prototype of the MEGA II chip was a large board containing mostly discrete logic parts called "El Grande".

Failed developments

VTech
VTech

VTech is the common name of Video Technology Ltd. , a Hong Kong-based manufacturer of consumer electronics. VTech products include cordless telephones and accessories, single-function computers such as email appliances, and simple computerized educational toys for children, including the V.Smile and V.Flash....
, makers of the Laser
Laser 128

The Laser 128 was a clone of the Apple II series of personal computers, first released by VTech in 1984. Unlike the Apple II clones from Franklin Electronic Publishers, VTech reverse engineering the Apple Read-only memory using a clean room design rather than copying them....
 series, demonstrated a prototype of a more powerful Apple compatible in 1989. It was never released due to licensing issues with Apple.

A project called "Avatar" in the early 90s promised a 32-bit
32-bit

The range of integer values that can be stored in 32 bits is 0 through 4,294,967,295 or -2,147,483,648 through 2,147,483,647 using two's complement encoding....
 state of the art machine that was backwards compatible with the Apple . It was never finished or released. Some doubt that the project even got out of the conceptualization stage.

Cirtech started work on, but never completed, a black and white Macintosh hardware emulation plug-in card for the Apple dubbed "Duet".

See also

  • Apple II series
    Apple II series

    The Apple II was one of the first highly successful mass produced microcomputer products, manufactured by Apple Computer and introduced in 1976....
  • Apple II Plus
    Apple II Plus

    The Apple II Plus was the second model of the Apple II series of personal computers produced by Apple Computer, Inc....
  • Apple IIc Plus
    Apple IIc Plus

    The Apple IIc Plus was the sixth and final model in the Apple II line of personal computers, produced by Apple Computer. The "Plus" in the name was a reference to the additional features it offered over the original portable Apple IIc, such as greater storage capacity , increased processing speed, and a general standardization of the syst...
  • Juiced.GS
    Juiced.GS

    Juiced.GS is a print magazine/newsletter for Apple II computer users. Although the name implies a focus on the Apple IIgs, its coverage encompasses all Apple II systems....
    , the last remaining Apple II publication
  • List of Apple games
    List of Apple IIGS games

    Following is a List of Apple IIGS games. While backwards compatible for running most List of Apple II games, the Apple IIgs had a native 16-bit mode with support for graphics, sound, and animation capabilities that far surpassed anything earlier Apple II's were capable of....
  • ReactiveMicro.com
    ReactiveMicro.com

    ReactiveMicro.com is mainly a legacy Apple II series hardware developer and manufacturer. The only such company left that reproduces Apple II related hardware and one of only a few that strives to create new items for the hobbyist market....
    , the last remaining Apple II hardware production company (cloned items)


More pictures



External links

  • – Apple II news and downloads
  • contains reviews of many Apple Applications
  • Apple programming site, for PC and Mac users running Apple emulation
  • Apple Super Hi-res Graphics Gallery
  • Multi platforms Apple emulator
  • Apple emulator for Mac OS X
  • GSoft BASIC is Applesoft BASIC replacement for Apple computer
  • Apple application screenshots taken on LCD TV connected to the computer
  • Apple pictures on RetroMacCast
  • Apple pictures on Flickr