h6. [[Hardware Abstraction Layer]] h6(. » [[List of HAL APIs]] h6((. » HAL PCI API h4. Entry points Items marked ¶ are internal calls for OS use only; their functionality and availability is subject to change without warning. User programs interested in using these calls should instead use the equivalent RISC OS SWI call (if available). * [[HAL_PCIFeatures]] ¶ * [[HAL_PCIReadConfigByte]] ¶ * [[HAL_PCIReadConfigHalfword]] ¶ * [[HAL_PCIReadConfigWord]] ¶ * [[HAL_PCIWriteConfigByte]] ¶ * [[HAL_PCIWriteConfigHalfword]] ¶ * [[HAL_PCIWriteConfigWord]] ¶ * [[HAL_PCISpecialCycle]] ¶ * [[HAL_PCISlotTable]] ¶ * [[HAL_PCIAddresses]] ¶