* Changes in VICE 2.3
======================

** General
----------

- Added x64sc, the accurate C64 emulator:

  * VIC-II emulation rewritten from scratch using results from extensive
    testing with newly written test programs on real hardware.

  * Emulation is done on a cycle by cycle basis combined with pixel exact
    dot clock domain handling.

  * Accurate handling of all possible in-line splits of VIC-II registers
    and graphics data.

  * C64 model and even individual chip revisions can be selected for very
    detailed emulation of their differences.

  * Equally accurate PAL, NTSC and PAL-N emulation.

  We believe x64sc is one of the most accurate C64 emulators at the
  moment.

- Drive improvements, including weak bit emulation.

- Major reSID overhaul:

  * Emulation of all known pipeline delays for full cycle accuracy.
  * New shift register model based on revectorized die photograps.
  * Accurate DAC models based on revectorized die photograps.
  * Emulation of floating waveform DAC input for waveform 0.
  * Advanced 6581 transistor level filter model based on revectorized
    die photograps, yielding unprecedented accuracy.

- CRT Emulation (former "PAL emulation") is now available regardless of
  video mode or -chip and works in all emulators.

  NOTE: Color gamma range changed. You may need to set to 2.200 manually.
  (ColorGamma=2200)

- Added "True aspect ratio" option.

- Sound buffer overflows reduced and the error replaced with a warning.

- Various monitor improvements (io details, expansion port status ...)

- Removed little used Emulator ID feature.

- VIA wrap handling rewritten to fix problems with timer 2.

- Added autostart option to do LOAD ,8 instead of ,8,1.

- RESTORE key presses are now distributed randomly across a frame.

- Improved accuracy of CIA interrupts. (6526/6526A selectable)

** C64/C128 changes
-------------------

- Cartridge emulation improvements. Many broken cartridges fixed, and the
  following ones added:

  * Action Replay 2
  * Action Replay 3
  * Capture
  * Diashow Maker
  * EXOS
  * Final Cartridge Plus
  * Freeze Frame
  * Freeze Machine
  * Game Killer
  * MACH 5
  * Magic Voice
  * MMC Replay
  * Prophet 64
  * Snapshot 64
  * Super Explode V5
  * Super Snapshot

- Added emulation of the passthrough port of MMC64, Magic Voice and IEEE488
  cartridges.

- CIA TOD 50/60 Hz toggle emulation fixed.

- Improved 1351/paddles port MUX emulation.

** C64 changes
--------------

- Added Drean (PAL-N) emulation.

- Fixed bug with autostart mode Inject-to-RAM.  It now writes to RAM under
  I/O correctly.

** C128 changes
---------------

- Fixed a bug with autostarting t64 images.

** VIC20 changes
----------------

- Added Vic Flash Plugin cartridge emulation.

- Fixed video cache & reverse bug.

- Fixed bug in attaching 4kB cartridges.

- Fixed autostarting bug, mostly seen with tape images.

** PLUS4 changes
----------------

- Fixed crashes in NTSC mode.

- Added v364 speech emulation.

** PET changes
--------------

- Added DWW emulation.

- Added userport DAC emulation.

** CBM2 changes
---------------

- Split 5x0 and 6x0/7x0 settings in the configuration file.

** Unix changes
---------------

- (Xaw) The menus can now be operated without holding the
  mouse button down. Keyboard control is also available
  (Shift-Alt-Z for left menu, Shift-Alt-X for right menu).

- (Xaw) Lightpen/gun support added.

- (GTK+) Fixed aspect ratio option added.

** MS-Windows changes
---------------------

- Implemented run time DX9 toggling.

** AmigaOS changes
------------------

- Added support for arm-aros.

- Made the UI more complete.

** DOS changes
--------------

- Made the UI more complete.

** Mac OS X changes
-------------------

- Added IO Tree to display a tree of IO registers and decode their meaning.
  Currently only the C64 IO registers are supported, but you can extend the IO
  Tree yourself by editing the "IOTree.plist" file. Please submit your IO Tree
  extensions!

- Added Debugger Windows for Memory, Register and Disassembly Display.
  These windows assist the monitor mode and display the machine state.
  A popup window in the disassembly view allows you to set and alter breakpoints.

- Joysticks with sliders and hats are now supported. A single joystick can be
  shared for HID device a and b. Some workarounds for broken USB devices added.

- Added "virtual" auto-fire to Joystick settings.

- Added True Pixel Aspect Ratio Display. This simulates the behavior that the
  screen of an emulator is smaller in width if the pixels are not squares.

- Fixes in x64 and x128 osx keymaps.

- Correctly restore scale, position, and ordering of all emulator windows.

- Added 64 Bit compiles using gcc and clang compilers.

** SDL UI changes
-----------------

- Added vsid UI, FFMPEG and printer menus. The UI is complete.

** BeOS changes
---------------

- Fixed sound hang.

- Made the UI more complete.

** OS/2 changes
---------------

- The OS/2 port is now compiled using openwatcom.

- Made the UI more complete.