File Release Notes and Changelog
Notes:
Many new improvements to Nemus--see the changelog.
The PPU has really stabilized in this release, and you
will find a lot of games that didn't work before now do.
Changes:
- Fixed bug where could not load rom images with file names containing spaces.
- Fixed bug where the reset console function was not being registered.
- Fixed font cell size not being correctly set when creating a font.
- Fixed PPU sprite/background clipping bug.
- Cleaned up documentation and windows installer.
- Fixed UNIF loading bugs which were causing Nemus to crash.
- Fixed font rendering problem on some video cards.
- Fixed sprite priority problems in some games like Super Mario Bros. 3.
- Fixed PPU accuracy, and improved NMI timing. A lot of games that didn't
work before now work!
- Fixed bug where sprite zero wasn't being horizontally flipped for
collision detection with background.
- Improved MMC3 timing - still needs some tweaking.
- Fixed bug where left & right or up & down on the directional pad could
be pressed simulataneously.
- Added support for NES-PNROM-05 (MMC2) mapper. Going to play Mike Tyson's
Punchout now. :)
- Integrated new Nes::MmcManager into the main client.
- Improved the iNES to UNIF conversion source code.
- Fixed PRG-ROM swapping bug in MMC3 mapper. Super Mario Bros. 2 & 3 now work.
- Fixed slight palette generation problem that was creating colors that looked
the same when in fact they sould have been of different intensities.
- Fixed CPU timing problems with some absolute addressing instructions.
- Improved sprite zero timing by fixing problems in CPU core.
- Fixed bugs with MMC1 mapper, now properly emulates MMC1B2 behaviour for
SOROM/SVROM/SUROM games (ie. Dragon Warrior 3 & 4)
- Fixed bug causing Nemus to quit on some hardware, as a result of not
selecting a proper display mode pixel format.
- Refactored CHR-ROM/RAM bank switching code for MMC's. More flexible and
should be slightly more streamlined now.
- Added Nes::MmcFactory and Nes::MmcManager classes for improved flexibility
in instantiating Nes::Mmc objects. This also fixes the crash when trying
to load a rom image that uses an unsupported MMC.
- Added MMC implementations for UNROM, CNROM, SGROM, and MMC3 based MMCs.
- Now properly emulates the the PPU bus when reading/writing
write-only/read-only PPU registers, respectively.
- Fixed absolute indirect JMP instruction bug in Nes::StaticCpu.
- Fixed indirect-indexed instruction bugs in Nes::StaticCpu.
- Fixed BRK instruction not pushing 'b' flag in Nes::StaticCpu.
- Fixed 'd' flag not being cleared on interrupt in Nes::Cpu and Nes::StaticCpu.
- Fixed MMC1 bug in which the top bit of the CHR-ROM paging registers was
being ignored. The Legend of Zelda 2 now works in the overworld map mode.
