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NKCallIntChain (Compact 2013)

  • Article

10/16/2014

This function determines which chained, or shared, interrupt device triggered an IRQ event.

Syntax

DWORD NKCallIntChain(
  BYTE irq
);

Parameters

  • irq
    [in] Identifies the IRQ value.

Return Value

If no ISR has handled the IRQ event, SYSINTR_CHAIN is returned. Otherwise, a valid SYSINTR value is returned to the OEM. The OEM must then pass this value back to the kernel so the IST can be triggered.

Remarks

An OEM calls this function from the OAL ISR routine. The OEM has full control of the IRQ values that can be chained and those that cannot. When this function is called, all work required to enable C-language code in an installed ISR is performed.

Requirements

Header

nkintr.h

Library

Nkstub.lib

See Also

Reference

Kernel Functions Available to the OAL