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Changelog.
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DirtyHairy committed Jul 15, 2017
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* Stella has moved from Sourceforge to Github.

* Completely new TIA core is now available, ported from 6502ts by
Christian Speckner. This new core is extremely accurate, and matches
real hardware in almost every test we've performed. New features
include:
- TODO - gather info on all new functionality:
- RSYNC
- YStart autodetection
- Proper emulation of RDY during write cycles (WSYNC).
- Fixed debug colors can now be set for each graphical object, from a
Christian Speckner (DirtyHairy). This new core is extremely accurate,
and matches real hardware in almost every test we've performed.
New features include:
- Meltdown emulates correct
- The lap number in Pole Positions displays correctly
- Artifacts in the mountains on Snoopy and the Red baron are gone
- Line artifacts in Title Match Pro Wrestling and Realsports Boxing are
fixed
- The spurious line at the left border of Video Chess now displays
correctly
- All 32 char text demos from AtariAge now work perfectly (Stella 4
shows artifacts on several of these)
- Stella is now the only emulator to display the "Mega Bitmap Demo"
(atext.bin) from AtariAge correctly
- Improved starfield effect for missiles (still TODO for ball and
players)
- RSYNC emulation has improved, all testcases now match real
hardware
- Several other ROMs that have never worked in any emulator are now
emulated correctly.
- RDY behavior with respect to write cycles is accurate
- Optional YStart autodetect and more robust frame handling
- NUSIZ during player draw matches hardware
- RESMx during missile draw matches hardware
- Paddle emulation is slightly more accurate. As a consequence, the
"paddle feel" may be slightly different from Stella 4
- Fixed debug colors can now be set for each graphical object, from a
choice of 'red', 'orange', 'yellow', 'green', 'blue' and 'purple'.
This is accessible through the new 'tia.dbgcolors' commandline
argument.
- Several ROMs that have never worked in any emulator are now
emulated correctly.
- ...

* Implemented new phosphor emulation mode, which is much closer to real
TV output. Related to this, added ability to change the default
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less memory and in some cases run faster than before.

* Much improved RIOT timer emulation never before seen in any emulator.
Special thanks to DirtyHairy for the implementation, and alex_79 for
finding documentation that finally describes in more detail how the
M6532 chip actually works.
Special thanks to Christian Speckner (DirtyHairy) for the implementation,
and alex_79 for finding documentation that finally describes in more detail
how the M6532 chip actually works.

* Added BUS (experimental) and CDF bankswitching schemes, and also
ARM Timer 1 support; special thanks to SpiceWare for the code.
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