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.
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