> I've observed a strange phenomenon with the arcade board of "Street Fighter II": > Sometimes, sprites disappear for one frame, only to reappear again. > > Have a look: > > > The first image looks normal. > In the second, a piece of the vase is missing and the elephant trunks are out of > sync. (Even though the latter one might be because the camera might have caught the > TV in mid-frame.) > In the third image, a piece of Dhalsim's foot is missing. > > In other instances, I had other issues. For example, I once saw the vase on the right > side of the stage disappearing completely. (Again, just for one frame.) > > Except for the elephant trunks, I noticed those things with my plain eyes. (Which is > why I did the videos that these screenshots come from in the first place: To check if > I was only imagining things.) > > As I said, these are scenes from playing the game on the real board, that's not an > emulation. Also, the screen is a typical NTSC CRT TV. (The game is connected with a > supergun, it's not an actual arcade cabinet.) > > My question is: Is this a graphical problem on the physical board (i.e. a hardware > fault on my specific copy) or is this merely a glitch in the game? > > Since the background is still visible when sprites disappear, it cannot be a screen > error. > > So, if this is just the way the game works, how can I recreate this in MAME? > > By the way, the version that I used is "Street Fighter II - The World Warrior" (USA > 910206) (= sf2ua in MAME). The CPS-1 board is the original 10 MHz version (i.e. not > the 12 MHz Dash board) with the Motorola processor.
It could always be a board error, having a quick check of the PCB to see if there's any scratches on the traces would be an idea.
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On a quest for Digital 573 and Dancing Stage EuroMix 2
By gods I've found it!
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