Editing Apple IIGS emulators
Jump to navigation
Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 1: | Line 1: | ||
{{DISPLAYTITLE:Apple II<span style="font-size:75%">GS</span> emulators}} | {{DISPLAYTITLE:Apple II<span style="font-size:75%">GS</span> emulators}} | ||
{{Infobox console | {{Infobox console | ||
− | |title = Apple II<span style="font-size:75%">GS</span> | + | |title=Apple II<span style="font-size:75%">GS</span> |
− | |image = AppleIIGSPC.png | + | |image=AppleIIGSPC.png |
− | |imagecaption = An Apple II<span style="font-size:75%">GS</span> PC. | + | |imagecaption=An Apple II<span style="font-size:75%">GS</span> PC. |
− | |developer = | + | |developer=Apple Computer, Inc. |
− | |type = [[:Category:Computers|Computers]] | + | |type=[[:Category:Computers|Computers]] |
− | |release = September 1986 | + | |release=September 1986 |
− | + | |discontinued=December 1992 | |
− | |discontinued = December 1992 | + | |predecessor = [[Apple II Line|Apple II]] |
− | |predecessor = [[Apple II | + | |emulated={{✓}} |
− | |emulated = {{✓}} | ||
}} | }} | ||
+ | {{stub}} | ||
− | The | + | The [[Apple II Line|Apple II]]<span style="font-size:75%">GS</span> is a 16-bit PC produced by Apple Computer Inc. It was created to compete with the [[Amiga Line|Amiga]] and the [[Atari ST Line|Atari ST]] lines of PCs. |
− | 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 | + | 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. |
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. | 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. | ||
− | == | + | ==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. | |
− | 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 | ||
==Graphics Capabilities== | ==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). | + | |
+ | 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. | 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. | ||
Line 84: | Line 31: | ||
Colours are selected from a 12-bit RGB 4,096 colour palette; the IIGS therefore has the same total colour range as its contemporaries the Commodore Amiga, the Atari STE and the Acorn Archimedes. | Colours are selected from a 12-bit RGB 4,096 colour palette; the IIGS therefore has the same total colour range as its contemporaries the Commodore Amiga, the Atari STE and the Acorn Archimedes. | ||
− | + | ==Audio Capabilities== | |
− | |||
The IIGS provides a 32-channel wavetable Ensoniq sound chip, which uses 64kb for samples. | The IIGS provides a 32-channel wavetable Ensoniq sound chip, which uses 64kb for samples. | ||
The OS by default configures this as 15 stereo channels and uses the remaining two channels as interrupt counters; the IIGS is therefore often described as a 15-channel machine. | The OS by default configures this as 15 stereo channels and uses the remaining two channels as interrupt counters; the IIGS is therefore often described as a 15-channel machine. | ||
+ | |||
+ | ==Emulators== | ||
+ | |||
+ | {|class="wikitable" style="text-align:center" | ||
+ | !scope="col"|Name | ||
+ | !scope="col"|Operating system(s) | ||
+ | !scope="col"|Latest version | ||
+ | !scope="col"|Active | ||
+ | !scope="col"|[[Recommended Emulators|Recommended]] | ||
+ | |- | ||
+ | |[[KEGS]] | ||
+ | |Multi-platform | ||
+ | |0.91 | ||
+ | |{{✗}} | ||
+ | |{{✓}} | ||
+ | |- | ||
+ | |[[GSplus]] | ||
+ | |Multi-platform | ||
+ | |0.14 | ||
+ | |{{✓}} | ||
+ | |{{~}} | ||
+ | |- | ||
+ | |[[GSport]] | ||
+ | |Multi-platform | ||
+ | |0.31 | ||
+ | |{{✗}} | ||
+ | |{{✗}} | ||
+ | |- | ||
+ | |[[MAME]] | ||
+ | |Multi-platform | ||
+ | |{{MAMEVer}} | ||
+ | |{{✓}} | ||
+ | |{{✗}} | ||
+ | |} | ||
{{Apple}} | {{Apple}} | ||
− | |||
− | |||
− |