![\"Apple](\"https:\/\/carleton.ca\/scs\/wp-content\/uploads\/PXL_20260303_134731424-scaled.jpg\")
<\/a><\/p>\nIts multimedia capabilities were revolutionary for its era: the Ensoniq 5503 wavetable synthesis chip offered 32 oscillator channels producing 16-voice stereo audio with 64\u202fKB of dedicated sound RAM, arguably the richest sound of any personal computer at the time. Visually, its \u201cSuper High-Resolution\u201d graphics supported up to 4,096 colors from a 12-bit palette, with up to 3,200 colors displayable simultaneously through palette manipulation. Despite selling only about 1-1.5 million units over six years, the Apple IIGS is remembered as a technically impressive and innovative bridge between the 8-bit Apple II heritage and the modern era of graphical computing, demonstrating both the possibilities and constraints of corporate-era personal computing.<\/p>\n
- \n
- Manufacturer<\/strong>: Apple Computer Inc.<\/li>\n
- Released<\/strong>: 1986<\/li>\n
- Type<\/strong>: Personal Computer<\/li>\n
- Cost at release <\/strong>(no monitor): USD $999 (CAD ~$3,500 adjusted for inflation)<\/li>\n
- Cost with peripherals:<\/strong> CAD $6,500 (adjusted for inflation)<\/li>\n
- MIPS<\/strong>: 0.22 MIPS (millions of instructions per second). This relatively modest performance was due to Apple’s deliberate decision to limit the clock speed despite the processor being certified for 4+ MHz operation.<\/li>\n<\/ul>\n
- Hardware Specifications<\/a><\/dt>
<\/p>\n
- \n
- CPU<\/strong>: Western Design Center WDC 65C816 (16-bit)\u200b<\/li>\n
- RAM<\/strong> (Original 1986): 128 KB expandable to 8 MB<\/li>\n
- ROM<\/strong> (Original): 128 KB<\/li>\n
- Video Controller<\/strong>: Custom Video Graphics Controller (VGC)<\/li>\n
- Sound Chip<\/strong>: Ensoniq 5503 digital oscillator chip<\/li>\n
- Expansion Slots<\/strong>: Seven Apple II Bus slots (50-pin card-edge)<\/li>\n
- Floppy Drives<\/strong>: Support for 3.5″ (800 KB) and 5.25″ (140 KB) formats\u200b<\/li>\n
- Hard Drive Support<\/strong>: SCSI interface available via expansion card\u200b<\/li>\n
- Weight<\/strong>: 4.1 kg<\/li>\n<\/ul>\n
<\/p><\/dd>
- <\/div>\n
- Operating System & Programming Languages <\/a><\/dt>
<\/p>\n
- \n
- O\/S<\/strong>:\n
- \n
- Native 16-bit Operating Systems:\n
- \n
- ProDOS 16 (1986-1988): The initial operating system shipped with the IIgs, based on the 8-bit ProDOS but modified for 16-bit hardware. However, it was written primarily in 8-bit code and didn’t fully utilize the IIgs’s capabilities.\u200b<\/li>\n
- GS\/OS (System Software 4.0-6.0.1, 1988-1993): Apple’s true 16-bit operating system written entirely in 65816 code. It featured a Macintosh-like GUI, resource forks, device drivers, AppleShare networking, disk caching, and support for storage devices up to 4 GB. The final version was System 6.0.1, released in 1993.\u200b<\/li>\n
- GNO\/ME: A third-party UNIX-like multitasking kernel that provided preemptive multitasking under the GUI.<\/li>\n<\/ul>\n<\/li>\n
- Backward-Compatible 8-bit Operating Systems:\n
- \n
- The IIgs could run all earlier Apple II operating systems with approximately 95% software compatibility:\u200b<\/li>\n
- Apple DOS 3.2 and 3.3<\/li>\n
- ProDOS 8<\/li>\n
- Apple Pascal<\/li>\n
- CP\/M\u00a0(with appropriate hardware)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
- Programming Languages<\/strong>:\n
- \n
- Built into ROM\n
- \n
- Applesoft BASIC: Built into ROM and available immediately upon startup, even without loading an operating system.\u200b<\/li>\n
- Machine Language Monitor: Also in ROM, allowing simple assembly language programming.\u200b<\/li>\n<\/ul>\n<\/li>\n
- Available Development Languages\n
- \n
- Assembly Language: 65816 assembly programming through tools like APW (Apple Programmer’s Workshop), Apple’s command-line development environment similar to Macintosh Programmer’s Workshop.\u200b<\/li>\n
- Pascal: Supported through Apple Pascal operating system.\u200b<\/li>\n
- C: Available through APW and other development tools.<\/li>\n
- BASIC variants: Including Integer BASIC and Applesoft BASIC.<\/li>\n
- FORTRAN: Available through third-party compilers.<\/li>\n
- Logo: Educational programming language support.<\/li>\n
- COBOL: Through third-party implementations.<\/li>\n<\/ul>\n<\/li>\n
- The IIgs’s 65C816 processor could switch between 8-bit mode (for backward compatibility with 6502 code) and 16-bit mode, allowing it to run software written in either architecture.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
<\/p><\/dd>
- Built into ROM\n
- Native 16-bit Operating Systems:\n
- RAM<\/strong> (Original 1986): 128 KB expandable to 8 MB<\/li>\n
- Released<\/strong>: 1986<\/li>\n