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#629 dendy mode

General
closed:fixed
feos
dendy (3)
5
2015-04-26
2013-10-28
Eugene
No

Hi, all who made FCEUX emulator.
Can you add Dendy-mode (PAL/NTSC Hybrid) to FCEUX please?
Dendy mode is basically NTSC mode, but with a longer pre-vblank time, and running at 50FPS instead of 60FPS.

Here is CORRECT and enough information about timings:
http://wiki.nesdev.com/w/index.php/Clock_rate
differences between NES NTSC/FC, NES PAL, and Dendy:
http://wiki.breaknes.com/_media/wiki:2652378.png?cache=
http://savepic.su/2652378.htm
NMI info:
http://wiki.nesdev.com/w/index.php/NES_2.0#TV_system
http://forums.nesdev.com/viewtopic.php?p=81513#p81513
pAPU tables (Noise, DPCМ) are same as NTSC:
http://forums.nesdev.com/viewtopic.php?p=91333#p91333

Nintendulator, Nestopia, puNES, MyNES and Nesicide already support dendy-mode.
Nintendulator name it as "Hybrid".

How-to-test dendy-mode:

First ROM is Battletoads and Double Dragon (U).nes
It must look like:
http://img705.imageshack.us/img705/7139/animated.gif

Second ROM is Gremlins 2 - The New Batch (U).
Pitch (4 channels + DPCM) must be like: https://drive.google.com/file/d/0B7Zz6TuCmXnKZm9BMkJYZEVYaEE/edit?usp=sharing

lastest nintendulator WIP with dendy (aka hybrid) mode:
http://www.qmtpro.com/~nes/nintendulator/nintendulator_bin_unicode.zip

Discussion

  • Eugene

    Eugene - 2013-10-28

    fix
    Milestone: ROM Compatibility

     
  • zeromus

    zeromus - 2013-10-28

    not very likely, but thanks for the super detailed report

     
  • feos

    feos - 2015-04-26

    Fixed in r3107

     
  • feos

    feos - 2015-04-26
    • status: open --> closed:fixed
    • assigned_to: feos
    • Group: SDL --> General
     

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