Difference between revisions of "Apple IIGS emulators"

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(Added a little more detail.)
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Despite the Apple II<span style="font-size:75%">GS</span> name, it is a completely different architecture. The system has a chip called the “Mega II” which is an [[Apple II Line|Apple //e]] on a chip, making it fully backwards compatible with Apple ][ software.
 
Despite the Apple II<span style="font-size:75%">GS</span> name, it is a completely different architecture. The system has a chip called the “Mega II” which is an [[Apple II Line|Apple //e]] on a chip, making it fully backwards compatible with Apple ][ software.
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It was the first machine from Apple to use the Apple Desktop Bus and the first to provide a colour version of QuickDraw since the first colour Macintosh was not available until 1987. However it does not provide a high-resolution square pixel mode.
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==Graphics Capabilities==
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 +
In addition to RGB emulations of the existing Apple II artefact composite video modes, the IIgs adds 320x200 and 640x200 RGB colour modes; the former in various combinations of 16 colours per line and the latter at 4 colours per line (including a hardware dithering mode that acts a little like 16 colours per line). Hardware support is provided for changing palettes between lines.
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 +
There is also some support for 'fill mode', in which colour 0 means "repeat the last non-zero colour", designed to aid in fast single-colour fills.
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 +
==Audio Capabilities==
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 +
The IIGS comes with a 32-channel wavetable Ensoniq sound chip, which uses 64kb for samples.
  
 
==Emulators==
 
==Emulators==

Revision as of 14:52, 23 September 2020

Apple IIGS
AppleIIGSPC.png
An Apple IIGS PC.
Developer Apple Computer, Inc.
Type Computers
Release date September 1986
Discontinued December 1992
Predecessor Apple II
Emulated

The Apple IIGS is a 16-bit PC produced by Apple Computer Inc. It was created to compete with the Amiga and the Atari ST lines of PCs.

Despite the Apple IIGS name, it is a completely different architecture. The system has a chip called the “Mega II” which is an Apple //e on a chip, making it fully backwards compatible with Apple ][ software.

It was the first machine from Apple to use the Apple Desktop Bus and the first to provide a colour version of QuickDraw since the first colour Macintosh was not available until 1987. However it does not provide a high-resolution square pixel mode.

Graphics Capabilities

In addition to RGB emulations of the existing Apple II artefact composite video modes, the IIgs adds 320x200 and 640x200 RGB colour modes; the former in various combinations of 16 colours per line and the latter at 4 colours per line (including a hardware dithering mode that acts a little like 16 colours per line). Hardware support is provided for changing palettes between lines.

There is also some support for 'fill mode', in which colour 0 means "repeat the last non-zero colour", designed to aid in fast single-colour fills.

Audio Capabilities

The IIGS comes with a 32-channel wavetable Ensoniq sound chip, which uses 64kb for samples.

Emulators

Name Operating system(s) Latest version Active Recommended
KEGS Multi-platform 0.91
GSplus Multi-platform 0.14 ~
GSport Multi-platform 0.31
MAME Multi-platform 0.264


Apple Inc.
Apple Computer (1998).jpg
Desktop: Apple IApple II Line (Apple IIGS) • Apple III lineLisaMacintosh lineMacOS
Mobile: iPodiOS
Consoles: Pippin