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David Shah posted a blog postMouse Input - SUCCESSFULLY REVERSE-ENGINEERED!
I noticed that Nestopia supports a mouse in various Subor and "Educational Computer" ROMs. This got me interested, so I decided to reverse-engineer the mouse protocol. Luckily, it was much simpler than I thought. The mouse connects to joystick port 2. It then sends these signals, depending on the way it is moved. Left-click: ARight-click: BMove left: SelectMove right: Select + Start (at the same time)Move down: Up (confusing - be careful with this one)Move up: Up + Down (at the same time) Here…See More
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- http://www.davidstech.net
- Briefly describe your background:
- Electronics hobbyist, programmer, retro game enthusiast
- How would you like to help Playpower?
- Electronics design, software development
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- Game Developer, Software Developer, Other
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David Shah's Blog
Mouse Input - SUCCESSFULLY REVERSE-ENGINEERED!
I noticed that Nestopia supports a mouse in various Subor and "Educational Computer" ROMs. This got me interested, so I decided to reverse-engineer the mouse protocol. Luckily, it was much simpler than I thought.
The mouse connects to joystick port 2. It then sends these signals, depending on the way it is moved.
- Left-click: A
- Right-click: B
- Move left: Select
- Move right: Select + Start (at the same time)
- Move down: Up…
Posted on January 9, 2011 at 10:30am — 1 Comment
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