Choppy mouse movement

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nodrinks
Posts: 2
Joined: Tue 02 Apr, 2019 8:16 am

Choppy mouse movement

Post by nodrinks » Sat 06 Apr, 2019 7:54 am

When using PCem, i can't help but notice that the mouse movement is a little bit choppy, like there's a lag of some sort, like the mouse has a low refresh rate or something.
Is this a little quirk that old computers had back then that PCem just tries to emulate?
In fact this isn't just specific to PCem, almost all emulators that support a mouse have this "lag" in my experience, with the sole exception of MESS.
i'm not really complaining about anything, i'd just like to know why this happens.

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leilei
Posts: 633
Joined: Fri 25 Apr, 2014 4:47 pm

Re: Choppy mouse movement

Post by leilei » Sat 06 Apr, 2019 2:31 pm

Yep. The mouse polling rate is significantly lower on old serial and PS/2 mice. It's also an added compatibility benefit as there's some old games that *really* don't like fast mice, some with a badly implemented mouse filter...

nodrinks
Posts: 2
Joined: Tue 02 Apr, 2019 8:16 am

Re: Choppy mouse movement

Post by nodrinks » Sun 07 Apr, 2019 10:59 am

I see. Could there be a way to change this in the source code?

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