Problem with Cu-On-Pa

[nachch]

I tried playing Cu-On-Pa, as I noticed there was an AGTP translation for it.

However, when trying to run it, the game loads fine, then locks up at the main menu (where you select your savegame slot).
This happens to me with both the WIP and 1.36.
When tried with 1.337, the lockup occurs later (when you choose your game mode).
Curiously, the exact same lockup also occurs on Snes9X.

NSRT said about my ROM:

Code: Select all

---------------------Internal ROM Info----------------------
       File: Cu-On-Pa (J).smc
       Name: Cu-On-Pa SFC          Company: T&ESoft
     Header: Exists (type?)           Bank: LoROM
Interleaved: No                       SRAM: 64 Kb
       Type: Normal + Batt             ROM: 8 Mb
    Country: Japan                   Video: NTSC
  ROM Speed: 120ns (FastROM)       Version: 1.0
   Checksum: Good 0x4C0B             CRC32: 42D0C418
--------------------------Database--------------------------
   Name: Cu-On-Pa
Country: Japan                  Version: 1.0
 Port 1: Gamepad                 Port 2: Gamepad

Does this happen to anyone else?
(Thinking back, I don't rememebr ever trying to play this game, so I don't know if it ever did work for me.)

Thanks.

[grinvader]

It also happens on my end. The only thing I know is that it's not a patch issue.

[Aerdan]

There is a hack [in ZSNES 1.337] that makes it work, and then only imperfectly.

[Nach]

If you want to get it to work in Snes9x...

Cu-On-Pa (J)
Input is never scanned, freezing the game early on.
Timing issue?

Hack:

Code: Select all

REGISTER_4212()
    GetBank |= CPU.Cycles >= Settings.HBlankStart ? 0x40 : 0;
-   if (CPU.V_Counter >= PPU.ScreenHeight + FIRST_VISIBLE_LINE)
+   if (CPU.V_Counter >= PPU.ScreenHeight + FIRST_VISIBLE_LINE-11)
      GetBank |= 0x80; /* XXX: 0x80 or 0xc0 ? */