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Darwin 0.2 Driver Kit
cmdPort - enabled whenever we're quiescent, disabled whenever we're waiting for a specific interrupt. enabled: - top of I/O Thread - end of interruptHandler - end of ioOpHandler disabled: -- before handling AIO_RESET, AIO_SEND_COMMAND in I/O thread - top of interrupt handler autopoll - enabled when quiescent, disabled when we're doing anything else with the hardware. disabled: - doUserCommand - by hardware on almost any interrupt enabled: - end of interruptHandler - end of ioOpHandler - top of I/O thread
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