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Mouse pointer incorrectly drawn when moved #27

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barotto opened this issue May 11, 2018 · 2 comments

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commented May 11, 2018 •
edited

Under many DOS programs and games (especially Sierra adventures), the mouse pointer is not completely drawn when moved.
This does not always happen, and other times the problem is barely noticeable.
It seems like a timing issue.

Space Quest 1 (VGA):
ibmulator-0 9beta1-mouse-pointer
ibmulator-0 9beta1-mouse-pointer2

@barotto barotto added the bug label May 11, 2018

@barotto barotto added this to the Version 0.9 milestone May 11, 2018

@barotto barotto referenced this issue May 12, 2018

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Screen update errors in SQ1 (VGA) #28

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commented May 20, 2018 •
edited

I've noticed this same problem under DOSBox also, but way less pronounced: the pointer flickers and does not completely disappear.
On the 2121 this problem is less visible.

@barotto barotto added bug? and removed bug labels May 20, 2018

@barotto barotto removed this from the Version 0.9 milestone May 20, 2018

@barotto barotto added bug and removed bug? labels Oct 20, 2018

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commented Oct 27, 2018 •
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Can't replicate anymore on a release build...
It happens only occasionally and in a not reproducible way. This seems like a heisenbug.
It's usually resolved by saving and reloading the machine state.

@barotto barotto removed the bug label Oct 27, 2018

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