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All AppleJack controllers start in mouse emulation mode, behaving exactly like ADB mice. Only upon receiving a Listen command on register 3 with handler ID 0x46 does the AppleJack switch protocols, albeit such a change consisting merely of expanding register 0's buffer size to 4 bytes. In this state, the first 2 bytes remain defined as they are for an ADB mouse; the additional 16 bits carry the respective states of each of the AppleJack controller's remaining 11 buttons out of a possible supported 16. For backward compatibility, honor both mouse clicks and shoulder button presses on the host when considering the state of the emulated trigger buttons. |
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| .. | ||
| adbapplejack.cpp | ||
| adbapplejack.h | ||
| adbbus.cpp | ||
| adbbus.h | ||
| adbdevice.cpp | ||
| adbdevice.h | ||
| adbkeyboard.cpp | ||
| adbkeyboard.h | ||
| adbmouse.cpp | ||
| adbmouse.h | ||