Dark Souls

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Dark Souls
GameID(s)
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Configuration

No options that deviate from the default configuration are recommended for this title. The full list of default options is available here.

Known Issues

There are no reported issues with this title.

Special Notes

Patches

Anchors:
  DS1_US_FPS: &DS1_US_FPS
  # 60fps noskip
    - [be32, 0x00146e40, 0x38800002 ] # li r4 0x2
    - [be32, 0x00146e44, 0x989f070c ]
    - [be32, 0x00146e48, 0x989f070d ]
  
  # delta time
    - [ be32, 0x001423e8, 0x494447e9 ] # jump to code cave
  
  # get mftb
    - [ be32, 0x01586bd0, 0x7eac42e6 ] # mftb r21              // Move from timebase register (clock)
  
  # get mftb delta
    - [ be32, 0x01586bd4, 0x3ec0017d ] # lis r22,0x017d        // load high bits of address (0x017de3f8)
    - [ be32, 0x01586bd8, 0x62d6e3f8 ] # ori r22,r22,0xe3f8    // load low bits of address
    - [ be32, 0x01586bdc, 0x7e96a02a ] # ldx r20,r22,r20       // load previous frames mftb reading
    - [ be32, 0x01586be0, 0xfab60000 ] # std r21,0x0(r22)      // store this frames mftb reading
    - [ be32, 0x01586be4, 0x7e74a850 ] # subf r19,r21,r20      // subtract previous mftb reading from this mftb frames reading
  
  # mftb delta to float
    - [ be32, 0x01586be8, 0xfa7600e0 ] # std r19,0xe0(r22)     // store mftb delta (to be loaded into FPR)
    - [ be32, 0x01586bec, 0xcbd600e0 ] # lfd f30,0xe0(r22)     // load mftb delta into FPR
    - [ be32, 0x01586bf0, 0xffc0f69c ] # fcfid f30,f30         // convert integer to double
    - [ be32, 0x01586bf4, 0xffc0f018 ] # frsp f30,f30          // round to single precision
  
  # mftb delta to seconds
    - [ be32, 0x01586bf8, 0x3e400158 ] # r18,0x158             // load high bits constants pointer
    - [ be32, 0x01586bfc, 0x62526bd0 ] # ori r18,r18,0x6bd0    // load low bits of constants pointer
    - [ be32, 0x01586c00, 0xc3b20054 ] # lfs f29,0x54(r18)     // load timebase frequency constant
    - [ be32, 0x01586c04, 0xc3920058 ] # lfs f28,0x58(r18)     // load maximum timestep size
    - [ be32, 0x01586c08, 0xfffee824 ] # fdiv f31,f30,f29      // divide timebase delta by timebase frequency
  
  # check timestep size
    - [ be32, 0x01586c0c, 0xff9fe000 ] # fcmpu cr7,f31,f28     // compare current delta time to maximum timestep
    - [ be32, 0x01586c10, 0x419c0008 ] # blt +0x08             // don't return the maximum timestep size
  
  # set maximum timestep
    - [ be32, 0x01586c14, 0xffe0e090 ] # fmr f31,f28           // move maximum timestep to be returned
  
  # cleanup
    - [ be32, 0x01586c18, 0x7e94a278 ] # xor r20,r20,r20       // zero r20
    - [ be32, 0x01586c1c, 0x7e94a278 ] # xor r19,r19,r19       // zero r19
    - [ be32, 0x01586c20, 0x4e800020 ] # blr                   // return
  
  # constants
    - [ be32, 0x01586c24, 0x4c989680 ]  # timebase frequency as hexfloat (80mhz)
    - [ bef32, 0x01586c28, 0.05000000 ] # maximum timestep size (50ms or 20fps)

PPU-3577a3e8efa233c68dedce81a3d0a63dab05dbed:
  Unlock FPS:
    Games:
      "Dark Souls":
        BLUS30782: [ 01.00 ]
    Author: Whatcookie
    Notes: For people who would like to play the unpatched version of Dark Souls at decent framerates (unpatched PC version is equivalent to 1.06 on consoles!)
    Patch Version: 1.0
    Patch:
      - [ load, *DS1_US_FPS ]