Apple IIGS - Revision history

Josh at 19:11, 30 August 2025

2025-08-30T19:11:09Z

← Older revision		Revision as of 20:11, 30 August 2025
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	File:Apple IIgs 004.jpg\|Apple IIGS Logic Board & Power Supply		File:Apple IIgs 004.jpg\|Apple IIGS Logic Board & Power Supply
	File:Apple IIGS with peripherals.jpg\|Apple IIGS with peripherals		File:Apple IIGS with peripherals.jpg\|Apple IIGS with peripherals
	</gallery>		</gallery>{{Navbox-AppleVintage}}

	~~[[Category:Apple II Series]]~~
	{{Navbox-AppleVintage}}

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[Category:Apple Vintage Computers]]

Josh at 07:09, 22 August 2025

2025-08-22T07:09:55Z

← Older revision		Revision as of 08:09, 22 August 2025
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	This flexibility allowed the IIGS to serve in classrooms, homes, and professional environments.		This flexibility allowed the IIGS to serve in classrooms, homes, and professional environments.

	== 📷 Gallery ==		== Gallery ==
	<gallery mode="packed" heights="200">		<gallery mode="packed" heights="200">
	File:Apple IIgs 001 (white background).jpg\|Apple IIGS (front view)		File:Apple IIgs 001 (white background).jpg\|Apple IIGS (front view)

Josh: /* Input/Output and Expansion */

2025-08-22T07:09:20Z

Input/Output and Expansion

← Older revision		Revision as of 08:09, 22 August 2025
Line 62:		Line 62:
	The Ensoniq DOC gave the IIGS sound capabilities comparable to contemporary synthesiser keyboards and workstations, making it a favourite for music and educational software.		The Ensoniq DOC gave the IIGS sound capabilities comparable to contemporary synthesiser keyboards and workstations, making it a favourite for music and educational software.

	== 🎮 Input/Output and Expansion ==		== Input/Output and Expansion ==
	The IIGS retained the Apple II’s renowned expandability:		The IIGS retained the Apple II’s renowned expandability:
	* '''Seven Apple II-style internal slots''' for cards (including SCSI, memory, networking, and accelerators)		* '''Seven Apple II-style internal slots''' for cards (including SCSI, memory, networking, and accelerators)

Josh: /* Sound Capabilities */

2025-08-22T07:08:52Z

Sound Capabilities

← Older revision		Revision as of 08:08, 22 August 2025
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	These features enabled the IIGS to display rich, colourful graphics far beyond earlier Apple II models.		These features enabled the IIGS to display rich, colourful graphics far beyond earlier Apple II models.

	== 🔊 Sound Capabilities ==		== Sound Capabilities ==
	A major innovation was the inclusion of the '''Ensoniq 5503 Digital Oscillator Chip (DOC)''', a professional-grade synthesiser chip:		A major innovation was the inclusion of the '''Ensoniq 5503 Digital Oscillator Chip (DOC)''', a professional-grade synthesiser chip:
	* '''32 independent digital oscillators'''		* '''32 independent digital oscillators'''

Josh: /* Display and Graphics */

2025-08-22T07:08:30Z

Display and Graphics

← Older revision		Revision as of 08:08, 22 August 2025
Line 44:		Line 44:
	* Support for ProDOS and GS/OS file systems		* Support for ProDOS and GS/OS file systems

	== 🖥️ Display and Graphics ==		== Display and Graphics ==
	The IIGS introduced advanced graphics capabilities for the Apple II line, powered by custom VGC (Video Graphics Controller) hardware:		The IIGS introduced advanced graphics capabilities for the Apple II line, powered by custom VGC (Video Graphics Controller) hardware:
	* '''Resolution:''' 320×200 (up to 256 colours), 640×200 (up to 16 colours)		* '''Resolution:''' 320×200 (up to 256 colours), 640×200 (up to 16 colours)

Josh: /* Memory and Storage */

2025-08-22T07:08:07Z

Memory and Storage

← Older revision		Revision as of 08:08, 22 August 2025
Line 33:		Line 33:
	The 65C816 enabled the IIGS to run new, more powerful applications while maintaining support for the extensive Apple II software library.		The 65C816 enabled the IIGS to run new, more powerful applications while maintaining support for the extensive Apple II software library.

	== 💾 Memory and Storage ==		== Memory and Storage ==
	The standard Apple IIGS shipped with '''256 KB RAM''', expandable via memory expansion cards to a maximum of '''8 MB'''. ROM versions evolved over time:		The standard Apple IIGS shipped with '''256 KB RAM''', expandable via memory expansion cards to a maximum of '''8 MB'''. ROM versions evolved over time:
	* '''ROM 00/01:''' 128 KB ROM		* '''ROM 00/01:''' 128 KB ROM

Josh: /* Architecture and Processor */

2025-08-22T07:07:50Z

Architecture and Processor

← Older revision		Revision as of 08:07, 22 August 2025
Line 25:		Line 25:
	The '''Apple IIGS''' is a 16-bit personal computer introduced by Apple Computer, Inc. in September 1986 as the most advanced and final model in the Apple II series. It combined backward compatibility with earlier Apple II software and hardware with enhanced graphics and sound, targeting both education and home users.		The '''Apple IIGS''' is a 16-bit personal computer introduced by Apple Computer, Inc. in September 1986 as the most advanced and final model in the Apple II series. It combined backward compatibility with earlier Apple II software and hardware with enhanced graphics and sound, targeting both education and home users.

	== 🧠 Architecture and Processor ==		== Architecture and Processor ==
	The IIGS was built around the '''Western Design Center 65C816''' microprocessor, a 16-bit extension of the classic 6502 architecture. Key features include:		The IIGS was built around the '''Western Design Center 65C816''' microprocessor, a 16-bit extension of the classic 6502 architecture. Key features include:
	* '''CPU:''' WDC 65C816 running at 2.8 MHz (software-switchable to 1 MHz for compatibility)		* '''CPU:''' WDC 65C816 running at 2.8 MHz (software-switchable to 1 MHz for compatibility)

Josh: Removed Apple III as successor

2025-08-22T07:07:32Z

Removed Apple III as successor

← Older revision		Revision as of 08:07, 22 August 2025
Line 17:		Line 17:
	\| os = GS/OS, ProDOS 16, ProDOS 8		\| os = GS/OS, ProDOS 16, ProDOS 8
	\| predecessor = [[Apple IIe]]		\| predecessor = [[Apple IIe]]
	\| successor = ~~[[Apple III]]~~		\| successor =
	\| codename = Cortland		\| codename = Cortland
	\| model = A2S6000 (original), A2S6001 (ROM 01), A2S6003 (ROM 03)		\| model = A2S6000 (original), A2S6001 (ROM 01), A2S6003 (ROM 03)

Josh at 09:09, 10 May 2025

2025-05-10T09:09:49Z

← Older revision		Revision as of 10:09, 10 May 2025
Line 1:		Line 1:
	{{Infobox computer		{{Infobox computer
	\| name = Apple IIGS		\| name = Apple IIGS
	\| image = [[File:~~Apple_IIGS_Computer_Front_View~~.jpg\|250px]]		\| image = [[File:Apple Museum (Prague) Apple IIGS Woz (1986).jpg\|250px]]
	\| caption = Apple IIGS (ROM 01, 1986)		\| caption = Apple IIGS (ROM 01, 1986)
	\| manufacturer = Apple Computer, Inc.		\| manufacturer = Apple Computer, Inc.
Line 17:		Line 17:
	\| os = GS/OS, ProDOS 16, ProDOS 8		\| os = GS/OS, ProDOS 16, ProDOS 8
	\| predecessor = [[Apple IIe]]		\| predecessor = [[Apple IIe]]
	\| successor = [[~~Macintosh LC~~]]		\| successor = [[Apple III]]
	\| codename = Cortland		\| codename = Cortland
	\| model = A2S6000 (original), A2S6001 (ROM 01), A2S6003 (ROM 03)		\| model = A2S6000 (original), A2S6001 (ROM 01), A2S6003 (ROM 03)
	\| logo = [[File:Apple IIGS logo.svg\|~~250px~~]]		\| logo = [[File:Apple IIGS logo.svg\|150px]]
	~~\| Mega Drive / Genesis]]~~
	~~\| codename = Cortland~~
	}}		}}

Line 75:		Line 73:

	This flexibility allowed the IIGS to serve in classrooms, homes, and professional environments.		This flexibility allowed the IIGS to serve in classrooms, homes, and professional environments.

	~~== 🔍 PCB Schematics & Service Manual ==~~
	~~<templatestyles src="Template:StyledTable/styles.css" />~~

	~~{\| class="wikitable styled-table" style="width:80%; text-align:center;"~~
	~~\|+'''Apple IIGS Main Boards'''~~
	\|-
	~~! style="background-color:#f2f2f2;"\| Logic Board (ROM 01)~~
	~~! style="background-color:#f2f2f2;"\| Logic Board (ROM 03)~~
	\|-
	~~\| [[File:AppleIIGS_ROM01_LogicBoard.jpg\|thumb\|center\|250px\|Apple IIGS ROM 01 Logic Board]][[File:AppleIIGS_ROM01_Schematic.png\|center\|thumb\|Apple IIGS ROM 01 Schematic]]~~
	~~\| [[File:AppleIIGS_ROM03_LogicBoard.jpg\|thumb\|center\|250px\|Apple IIGS ROM 03 Logic Board]][[File:AppleIIGS_ROM03_Schematic.png\|center\|thumb\|Apple IIGS ROM 03 Schematic]]~~
	\|}

	~~Comprehensive service documentation is available in the [[Apple IIGS Service Manual]] and [[:Category:Apple Service Source\|Apple Service Source]].~~

	== 📷 Gallery ==		== 📷 Gallery ==
	<gallery mode="packed" heights="200">		<gallery mode="packed" heights="200">
	File:~~Apple_IIGS_Computer_Front_View~~.jpg\|Apple IIGS (front view)		File:Apple IIgs 001 (white background).jpg\|Apple IIGS (front view)
	File:~~AppleIIGS_ROM01_LogicBoard.jpg\|~~Apple ~~IIGS ROM 01 Logic Board~~		File:Apple IIgs 004.jpg\|Apple IIGS Logic Board & Power Supply
	~~File:AppleIIGS_ROM03_LogicBoard~~.jpg\|Apple IIGS ~~ROM 03~~ Logic Board		File:Apple IIGS with peripherals.jpg\|Apple IIGS with peripherals
	File:Apple IIGS ~~ADB Keyboard~~.jpg\|Apple IIGS ~~ADB keyboard and mouse~~
	~~File:AppleIIGS_Ensoniq5503.jpg\|Ensoniq 5503 DOC sound chip~~
	</gallery>		</gallery>

	~~== 🧪 Related Pages ==~~
	* [[Apple IIGS General Maintenance]]
	* [[Apple IIGS Troubleshooting Guide]]
	* [[Apple IIGS Capacitor Replacement Guide]]
	* [[Apple IIGS Keyboard Repair Guide]]
	* [[Apple IIGS SCSI Expansion Guide]]

	[[Category:Apple II Series]]		[[Category:Apple II Series]]

Josh: Automated update by bot

2025-05-10T08:47:02Z

Automated update by bot

New page

{{Infobox computer
| name = Apple IIGS
| image = [[File:Apple_IIGS_Computer_Front_View.jpg|250px]]
| caption = Apple IIGS (ROM 01, 1986)
| manufacturer = Apple Computer, Inc.
| type = Personal Computer
| release date = September 15, 1986
| discontinued = December 1992
| price = US$999 (base, 1986)
| cpu = Western Design Center 65C816 @ 2.8 MHz
| memory = 256 KB RAM (expandable to 8 MB)
| storage = 3.5" 800 KB and 5.25" 140 KB floppy drives, optional SCSI hard disk
| display = 320×200 or 640×200 pixels, 4,096 colours (up to 256 on screen)
| sound = Ensoniq 5503 Digital Oscillator Chip (32-channel, stereo)
| dimensions = 38.1 cm × 36.8 cm × 8.3 cm
| weight = 4.1 kg
| os = GS/OS, ProDOS 16, ProDOS 8
| predecessor = [[Apple IIe]]
| successor = [[Macintosh LC]]
| codename = Cortland
| model = A2S6000 (original), A2S6001 (ROM 01), A2S6003 (ROM 03)
| logo = [[File:Apple IIGS logo.svg|250px]]
| Mega Drive / Genesis]]
| codename = Cortland
}}

The '''Apple IIGS''' is a 16-bit personal computer introduced by Apple Computer, Inc. in September 1986 as the most advanced and final model in the Apple II series. It combined backward compatibility with earlier Apple II software and hardware with enhanced graphics and sound, targeting both education and home users.

== 🧠 Architecture and Processor ==
The IIGS was built around the '''Western Design Center 65C816''' microprocessor, a 16-bit extension of the classic 6502 architecture. Key features include:
* '''CPU:''' WDC 65C816 running at 2.8 MHz (software-switchable to 1 MHz for compatibility)
* '''16-bit data bus''' and 24-bit address bus, supporting up to 8 MB of RAM
* Backward compatibility with 8-bit Apple II software via a hardware emulation mode

The 65C816 enabled the IIGS to run new, more powerful applications while maintaining support for the extensive Apple II software library.

== 💾 Memory and Storage ==
The standard Apple IIGS shipped with '''256 KB RAM''', expandable via memory expansion cards to a maximum of '''8 MB'''. ROM versions evolved over time:
* '''ROM 00/01:''' 128 KB ROM
* '''ROM 03:''' 256 KB ROM, improved firmware and self-test

Storage options included:
* '''3.5" 800 KB floppy drive''' (Apple 3.5 Drive)
* '''5.25" 140 KB floppy drive''' (Apple Disk II or DuoDisk)
* Optional SCSI hard disk (via expansion card)
* Support for ProDOS and GS/OS file systems

== 🖥️ Display and Graphics ==
The IIGS introduced advanced graphics capabilities for the Apple II line, powered by custom VGC (Video Graphics Controller) hardware:
* '''Resolution:''' 320×200 (up to 256 colours), 640×200 (up to 16 colours)
* '''Palette:''' 4,096 colours (12-bit RGB), with programmable palettes per scanline
* Hardware support for text and graphics modes, including double high-resolution and super high-resolution
* Backward compatibility with all previous Apple II video modes

These features enabled the IIGS to display rich, colourful graphics far beyond earlier Apple II models.

== 🔊 Sound Capabilities ==
A major innovation was the inclusion of the '''Ensoniq 5503 Digital Oscillator Chip (DOC)''', a professional-grade synthesiser chip:
* '''32 independent digital oscillators'''
* '''Stereo output''' (two 8-bit DACs)
* Programmable waveforms, envelopes, and mixing
* Backward-compatible with Apple II speaker output

The Ensoniq DOC gave the IIGS sound capabilities comparable to contemporary synthesiser keyboards and workstations, making it a favourite for music and educational software.

== 🎮 Input/Output and Expansion ==
The IIGS retained the Apple II’s renowned expandability:
* '''Seven Apple II-style internal slots''' for cards (including SCSI, memory, networking, and accelerators)
* '''Dedicated memory expansion slot'''
* '''Ports:'''
** ADB (Apple Desktop Bus) for keyboard and mouse (first Apple II to use ADB)
** Printer (serial), modem (serial), and joystick ports
** Composite video, RGB video, and mono audio out
* '''External drive connectors''' for 3.5" and 5.25" floppy drives

This flexibility allowed the IIGS to serve in classrooms, homes, and professional environments.

== 🔍 PCB Schematics & Service Manual ==
<templatestyles src="Template:StyledTable/styles.css" />

{| class="wikitable styled-table" style="width:80%; text-align:center;"
|+'''Apple IIGS Main Boards'''
|-
! style="background-color:#f2f2f2;"| Logic Board (ROM 01)
! style="background-color:#f2f2f2;"| Logic Board (ROM 03)
|-
| [[File:AppleIIGS_ROM01_LogicBoard.jpg|thumb|center|250px|Apple IIGS ROM 01 Logic Board]][[File:AppleIIGS_ROM01_Schematic.png|center|thumb|Apple IIGS ROM 01 Schematic]]
| [[File:AppleIIGS_ROM03_LogicBoard.jpg|thumb|center|250px|Apple IIGS ROM 03 Logic Board]][[File:AppleIIGS_ROM03_Schematic.png|center|thumb|Apple IIGS ROM 03 Schematic]]
|}

*Comprehensive service documentation is available in the [[Apple IIGS Service Manual]] and [[:Category:Apple Service Source|Apple Service Source]].*

== 📷 Gallery ==
<gallery mode="packed" heights="200">
File:Apple_IIGS_Computer_Front_View.jpg|Apple IIGS (front view)
File:AppleIIGS_ROM01_LogicBoard.jpg|Apple IIGS ROM 01 Logic Board
File:AppleIIGS_ROM03_LogicBoard.jpg|Apple IIGS ROM 03 Logic Board
File:Apple IIGS ADB Keyboard.jpg|Apple IIGS ADB keyboard and mouse
File:AppleIIGS_Ensoniq5503.jpg|Ensoniq 5503 DOC sound chip
</gallery>

== 🧪 Related Pages ==
* [[Apple IIGS General Maintenance]]
* [[Apple IIGS Troubleshooting Guide]]
* [[Apple IIGS Capacitor Replacement Guide]]
* [[Apple IIGS Keyboard Repair Guide]]
* [[Apple IIGS SCSI Expansion Guide]]

[[Category:Apple II Series]]
{{Navbox-AppleVintage}}

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