changes_v12v13.txt

一款游戏机的模拟器

Changes from v1.2 to v1.3:

 1. Fixed MMC1 mirroring, was not handling alternate 1-screen mirroring
    mode properly - fixes RC Pro-Am (PRG 1) and several other games.

 2. Fixed MMC2 and MMC4, were not saving PRG/Mirroring states properly
    (relied on emulator to automatically restore them).

 3. Altered MMC3/MMC6 IRQ behaviour, should be more accurate now.

 4. Removed unused MMC5 code (the only emulator it worked in has since
    switched to a new mapper interface).

 5. Fixed bug in FME-07 sound, wasn't generating square waves properly.
    Also lowered overall sound volume.

 6. Added a new VRC7 instrument set (with some of my instruments dropped
    in, as they sounded better than the original ones in this set).

 7. Reorganized some mapper initialization routines.

 8. When loading iNES mapper 5 ROMs, the current WRAM size is now
    checked in the mapper menu (perform a soft reset to eliminate
    extra checkmarks).

 9. Fixed mirroring in mapper 16 (horizontal/vertical were backwards).

10. Fixed PRG swapping in mapper 18 (writing to $9001 would stomp the
    upper 4 bits of CHR bank 0 instead of updating PRG bank 2).

11. Removed an unused procedure from mapper 21.

12. Added IRQ emulation to mapper 23. Also optimized CHR bankswitching
    somewhat (was evaluating "What &= 0xF" instead of "What & 0xF").

13. Fixed mapper 41, was not properly synchronizing on load savestate.

14. Updated mapper 64 IRQ emulation according to modifications made
    to MMC3 code.

15. Updated mapper 90, was not properly synchronizing PRG/CHR on load
    savestate. Also updated initialization code.

16. Fixed emulation of mappers 95 and 118, more games should work now.

17. Added support for mapper 114 (MMC3 hybrid used in several Chinese
    games).

18. Updated mapper 182 (Super Donkey Kong) to use MMC3 class.

19. Fixed mapper 184 to work with the good dump of Atlantis no Nazo (J).

20. Added support for mapper 189 (Thunder Warrior).

21. Made minor modifications to mapper 232, now synchronizes PRG
    properly on load savestate.

22. Updated mapper 246 to maintain an internal state.

23. Added support for mapper 254 (Ai Senshi Nicol (pirate)).

24. Fixed NSF mapper, should now handle Famicom Disk System NSFs
    properly.

25. Made minor changes to AxROM UNIF boardset (merged Sync procedures).

26. Rearranged SaveMI/LoadMI/UnloadMapper routines for ExROM and SxROM
    UNIF boardsets.

27. Added support for UNL-8237 board (Pocahontas 2).

28. Modified emulation of UNL-H2288 board (Earthworm Jim 2), still
    doesn't work.

------------------------------------------------------------------------

iNES mappers added:
114, 189, 254

UNIF boards added:
UNL-8237

iNES mappers fixed/updated: (excluding minor style updates)
5, 16, 18, 21, 23, 41, 64, 90, 95, 118, 182, 184, 232, 246

UNIF boards fixed/updated:
NES-AMROM, NES-ANROM, NES-AOROM, UNL-H2288