DevHelp UnSetIRQ

This service removes the current hardware interrupt handler.

C
USHORT APIENTRY DevHelp_UnSetIRQ (USHORT IRQLevel)

Assembler
 MOV  BX,IRQnum               ; IRQ Interrupt number (0 - F) MOV   DL,DevHlp_UnSetIRQ

CALL [Device_Help] 

C

 * IRQLevel (USHORT) : input - IRQ Interrupt number (0-F)

Assembler
MOV  BX,IRQnum               ; IRQ Interrupt number (0 - F)

C
Success Indicator: 0

Possible errors: Caller does not own the IRQ return code.

Assembler
 'C' Set if the caller is not the owner or one of the owners of the IRQ. 

Remarks
DS must point to the data segment of the physical device driver on entry.

C

 * 1) include "dhcalls.h"

USHORT APIENTRY DevHelp_UnSetIRQ (USHORT IRQLevel) 