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==Emulators==
{|class="wikitable" style="text-align:center"!scope="col"|Name!scope="col"|Platform(s)!scope="col"|Latest version
! scope="col"|<abbr title="Free/Libre and Open-Source Software">FLOSS</abbr>
!scope="col"|Active!scope="col"|[[Recommended Emulators|Recommended]]
|-
! colspan="7"|PC / x86
|-
|[[KEGS]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://sourceforge.net/projects/kegs/files {{KEGSVer}}]|{{✓}}|{{✓}}|{{✓}}
|-
|[[GSplus]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://github.com/digarok/gsplus/releases {{GSplusVer}}]|{{✓}}|{{✗}}|{{~}}
|-
|[https://david-schmidt.github.io/gsport GSport]|align=left|{{Icon|Windows|Linux|macOS}}|{{GSportVer}}|{{✓}}|{{✓✗}}|{{✗}}
|-
|[[MAME]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://www.mamedev.org/release.html {{MAMEVer}}]|{{✓}}|{{✓}}|{{✗}}
|}
==Processor==
The central processor is a 65816, a backwards-compatible 16-bit update to the 6502 that was also used in the Super Nintendo. It runs natively at 2.8Mhz but will slow down to ~1Mhz when in classic Apple II emulation mode or when writing to video memory.
==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). Each line may use any of 16 palettes, making a total of 256 colours on screen without raster-linked palette changes.
==Audio Capabilities==
The IIGS provides a 32-channel wavetable Ensoniq sound chip, which uses 64kb for samples.
