Super Street Fighter II Turbo [AGA] & [CD32] - Bug with Ryu's "Super" fireball

[DamienD]

Heya guys,

Ransom1122 brought this to my attention

Unfortunately there seems to be a bug with both the [AGA] & [CD32] versions of "Super Street Fighter II Turbo"

This occurs when playing as Ryu and doing his "Super" fireball. See below:

a) AGA version:

[ Show youtube player ]

@ roughly 31 minutes, 40 seconds.

b) AGA version:

[ Show youtube player ]

@ roughly 1 minute, 54 seconds.

To test it's best to:

• Start a "Versus Game".
• Select / play with Ryu as Player 1, select anyone for Player 2.
• Build up the "Super" bar by doing dragon punches etc.
• Initiate the "Super" fireball by doing 2 x fireball movements and then any strength punch.

Of course I can only test both versions via WinUAE these days...

I've tried Quickstart settings and anything else I can in order to try to resolve this without success...

I'm pretty certain this is a game bug and not an emulation bug but you never know.

People with real A1200's / CD32 consoles; does this occur for you?

[dlfrsilver]

That's a game bug. You'll find it with Ken too. I remember Deejay had a bug with its super attack.

[DamienD]

Cheers for confirming Denis; I thought as much but had to ask just in case

[Seiya]

It is not a bug.
Amiga vesion miss so many frame on Super moves, that you see something of, maybe, initizal combo.

[dlfrsilver]

Originally Posted by Seiya

It is not a bug.
Amiga vesion miss so many frame on Super moves, that you see something of, maybe, initizal combo.

It is a bug. Basically the amiga coder has ported the frame skipper they had to insert in the PC release, otherwise the game would have not run correctly on it.

The problem is that this frame skipper is unsuited to the Amiga. It makes it skip and jump a tons of frames.

I put my nose inside the data files of SSF2T AGA, and everything is in it.

[Seiya]

ah ok, i look again..it is a little graphic mess..

[Seiya]

not the same exactly frames, but it seems that amiga mess try to replicate the flash explosion (the colors in this distored graphics is yellow, red, orange)
or also to replicate the punch effects.

[dlfrsilver]

Thanks. This is data corruption..... not a bug

[DamienD]

Hold on, now I'm confused...

Both the [AGA] & [CD32] versions have this issue. Now you're saying it's data corruption and not a game bug Denis?

For the [AGA] version I used the .IPFs to install. For the [CD32] version I used an image of a friend's original CD-ROM.

If it is data corruption then it exists in the Amiga originals...

[dlfrsilver]

Originally Posted by DamienD

Hold on, now I'm confused...

Both the [AGA] & [CD32] versions have this issue. Now you're saying it's data corruption and not a game bug Denis?

For the [AGA] version I used the .IPFs to install. For the [CD32] version I used an image of a friend's original CD-ROM.

If it is data corruption then it exists in the Amiga originals...

It's exactly that. The problem lies inside the original data. The guys behind the Amiga AGA version have done something wrong.

The problem is in the original disks, ipfs, copies, CD32 data files, etc....

[DamienD]

Gotcha. No way for us mere mortals to fix then...

[dlfrsilver]

Originally Posted by DamienD

Gotcha. No way for us mere mortals can fix then...

We would need a programmer to check the program code anyway.....

We need to remove the frameskipper. In fact, the Amiga main code is locked at 60 frames per seconds.

The game would need to use a variable frameskipping.

I have found the information inside the PC readme file.

The Amiga version is mostly a C port from the PC version, and i'm sure they have not made it cleanly......

The worst is that SSF2T use all the new AGA specific registers..... that's what i discovered when hacking the game.