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f234de116f
Squashed commit of the following:
REFACTOR : fix comments, logging, and rename some variables
REFACTOR : fix up some commentary, clean deadc0de
REFACTOR : mostly fix all the audio glitches
- amplitudes of samples are gradually shifted to zero when speaker has fallen silent
- simplifies speaker state machine
- fullspeed mode only enqueues quiet samples
REFACTOR : fix up a number of other functions and comments
REFACTOR : clean up code to submit normal speed wave buffer to OpenAL
Move some initializations to the cpu_thread()
REFACTOR : properly reset the speaker cycles access counter so we don't underflow and assert
REFACTOR : should never get a split buffer from our soundcore implementation
Fix warning from gcc ... static array size needs to be computed from integer values
REFACTOR : gcc (but not clang) complains about these, so just make them preprocessor defines
REFACTOR : use unsigned long long because we don't actually care that this counter is 64bit
REFACTOR : remainder_buffer and miscellaneous tweaks
- Adds implementation commentary to document remainder_buffer purpose
- Also adds sample average for square wave boundary in case where remainder_buffer not used (whole-sample boundary)
- Variable renaming and code shuffling
REFACTOR : do not dynamically alloc remainder buffer
- Never attribute to cache-coherancy bugs what is a simple thread race =P
REFACTOR : comments and whitespace
REFACTOR : rename public speaker API functions
REFACTOR : clean up public speaker API
REFACTOR : tabs to spaces
REFACTOR : moar deadc0de clean up and renaming
REFACTOR : remove deadc0de paths from soundcore
REFACTOR : fully excise soundtype stuff now that we only support soundcard output
Move a file static to function scope
REFACTOR : rename more variables and remove deadc0de
REFACTOR : samples_buffer naming and change to explict int16_t
REFACTOR : removed deadc0de and shuffled code locations
REFACTOR : remainder buffer naming and clarify type
REFACTOR : move joystick timing to VM module and remove header visibility
REFACTOR : clarify speaker variable name
REFACTOR : clarify cycle counting codepaths
REFACTOR : VBL/timing interfaces
- eliminates passing around a common global
REFACTOR : names and comments
HACK around volume issue
REFACTOR : rename speaker feedback variable
REFACTOR : rename global total cycle count
REFACTOR : rename a constant
Fix test builds
REFACTOR: rename to is_fullspeed
REFACTOR : local variable naming changes
REFACTOR : migrate cycle timing variables to correct location and remove header visibility
Allow fullspeed codepath to update speaker
REFACTOR : remove deadc0de paths in prep for cleanup
REFACTOR : speaker now manages its own VM entry point
Apple //ix
Apple2ix is an Apple //e emulator written primarily in C and x86 assembly language with a smattering of Objective-C (Cocoa port). Apple2ix is derived from the apple2-emul-linux project originally coded in the mid 90's.
Project Goals
The project seeks to be portable across a wide range of modern POSIX systems including MacOSX, desktop Linux/BSD, iOS, and Android.
As of December 2014, the emulator runs on MacOSX 10.9+ and Debian GNU/Linux, and mobile ports are currently on the drawing board.
Mac Package
A binary package for Macintosh is available at deadc0de.org
Size : 10240000 (10MB)
SHASUM : 81f2d55c2daaa0d3f9b33af9b50f69f6789738bf
Alt Size : 76820480 (75MB)
ALTSUM : 488a40d7f1187bcfd16d0045258f606a95f448cb
Linux Package
At the moment consists of ./configure --prefix=..., make, make install ;-) You will need GCC or Clang compiler
and other tools as determined by the configure script.
Project Tech
- C language for the majority of the project (still the most portable/reliable language after all these years ;-)
- Assembly language for 65c02 CPU tightloop
- Extensive tests for 65c02 CPU, Apple //e VM, and display (expected framebuffer output)
- OpenGLES 2.x graphics
- OpenAL audio (emulated speaker and emulated Mockingboard/Phasor soundcards)
- Objective-C and Cocoa APIs (Mac/iOS variant)
Semi-Ordered TODO
- Proper VBL timing
- ProDOS-order Disk Images
- ARM assembly/ABI variant (in prep for mobile)
- OpenGL shaders/tricks for style (various screen artifacts) and functionality (Disk ][ status overlays, etc)
- iOS port
- Android NDK port
- Emulator save/restore and image compatibility with AppleWin
- Other feature parity with AppleWin
- Improved debugger routines
- Emscripten/web frontend?