> Given your example, what happens to multiple input events in MAME within a single
> frame, say joystick right, then left? Is only the latest one processed?
Correct, only one event will be seen, if you can actually pull that off (at 60 FPS it's harder than you think).
That said, there are, to my knowledge, no known games that sample the inputs more than once per generated video frame. On consoles it was somewhat common that pre-PS1 hardware could only read inputs during VBL, and we know that while some humans can do some limited buttonmashing at a 60 FPS rate they can't do it reliably (this is why TASes exist). So even today on PC/WiiU/PS4/Xbone games sample the inputs once per frame at VBL.
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Re: MAME latencies?
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