h6. [[Hardware Abstraction Layer]] h6(. » [[List of HAL APIs]] h6((. » HAL counter API The HAL must supply a counter that varies rapidly, appropriate for use for sub-millisecond timing. On many systems, this counter will form part of timer 0 - as such it is not required to operate when timer 0 is not running. On other systems, the periodic timers may have no readable latch, and a separate unit will be required. The counter should count down from (period-1) to 0 continuously. h4. Entry points * [[HAL_CounterRate]] * [[HAL_CounterPeriod]] * [[HAL_CounterRead]] * [[HAL_CounterDelay]] h6. Information source: Kernel.Docs.HAL.HAL_API in CVS