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A comment on Yes, the Apple II MouseCard IRQ Is Synced to the VBL. Parent comment

Re:Yes, the Apple II MouseCard IRQ Is Synced to the VBL by EvanAnderson on Thursday May 08, 2025 @01:41PM (#43928922)
Atari had the capital to use custom ASICs to provide that functionality. The Apple II was all off-the-shelf parts.
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