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67 lines
3.2 KiB
Markdown
67 lines
3.2 KiB
Markdown
Apple //ix
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==========
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Apple2ix is an Apple //e (8bit 65c02 CPU) emulator designed to work on various POSIX platforms.
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Lineage
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Apple2ix derives from the apple2-emul-linux project originally coded by various developers in the mid 1990's and FTP-uploaded as source tarballs to the original `tsx-11.mit.edu` Linux archive.
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The original software was designed to work from the Linux console rendering via SVGAlib. It ran on par to the 1MHz Apple //e on an i386 (Pentium 100 class) or better machine. Later ports added X11 graphics support based on the original X11 DOOM source code drop, ty JC!
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As of October 2016, the resurrected Apple2ix runs on x86 and ARM Android devices, x64 MacOSX 10.9+, and x64 GNU/Linux
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Project Goals
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-------------
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* Portability and code resilience across a wide range of modern POSIXy systems including MacOSX, desktop Linux/BSD, iOS, Android. *If you are on Windows, just use the excellent [AppleWin](https://github.com/AppleWin/AppleWin) emulator!*
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* Language/platform/API minimalism for core emulation modules (prefer coding to POSIX APIs and using C99 over all other choices)
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* Reasonable emulation fidelity to the original Apple //e machine (timing, video, audio, etc...)
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* Good platform citizenship for each port (prefer coding in language-of-choice promoted by platform--e.g.: Objective-C/Swift on Darwin, Java on Android, ...)
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Project Tech
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------------
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* C99 dialect of the C programming language for the majority of the project
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* x86 and ARM assembly language for 65c02 CPU emulation loop
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* Extensive tests for 65c02 CPU, Apple //e VM, disks, and display (expected framebuffer output)
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* OpenGLES 2.x graphics with simple portable GLSL shaders
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* OpenAL and OpenSLES audio (emulated speaker and emulated Mockingboard/Phasor soundcards)
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* Objective-C and Cocoa APIs (Mac/iOS variant)
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* Java and Android APIs (Android app)
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Android
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[Available on Google Play](https://play.google.com/store/apps/details?id=org.deadc0de.apple2ix.basic).
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Running at 30FPS on ancient Gingerbread (Android 2.3.3) devices:
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Running at 60FPS on modern Android devices:
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Other Maintained Ports
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----------------------
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* Desktop GNU/Linux (GNU build)
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* macOS/iOS (Xcode build)
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Semi-Ordered TODO
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-----------------
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* Double-LORES graphics (used in Dagen Brock's Flappy Bird clone) are ugly/incorrect ... fix 'em
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* Double-HIRES graphics are also ugly/icorrect ... fix 'em
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* Improve VBL timing and vSync matching to the device/system refresh rate
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* CPU module ports: aarch64, Clang IR (bitcode)
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* iOS/iDevice ports. (in progress)
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* Net/Open/Free-BSD port
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* OpenGL shaders/tricks for style (emulating of various NTSC screen artifacts)
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* Emulation features ... (3.5" disk, AppleHD, Phasor, printer, ethernet, ...)
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* Debugger rewrite with tests ... improved debugger routines (CLI/curses debugger? GDB/LLDB module?)
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* Port to web ... emscripten/asmjs/web assembly
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