DevHelp UnSetIRQ: Difference between revisions
Created page with "This service removes the current hardware interrupt handler. ==Syntax== ===C=== USHORT APIENTRY DevHelp_UnSetIRQ (USHORT IRQLevel) ===Assembler=== <PRE> MOV BX,IRQnum ..." |
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{{DISPLAYTITLE:DevHelp_UnSetIRQ}} | |||
This service removes the current hardware interrupt handler. | This service removes the current hardware interrupt handler. | ||
Latest revision as of 05:36, 11 May 2025
This service removes the current hardware interrupt handler.
Syntax
C
USHORT APIENTRY DevHelp_UnSetIRQ (USHORT IRQLevel)
Assembler
MOV BX,IRQnum ; IRQ Interrupt number (0 - F) MOV DL,DevHlp_UnSetIRQ CALL [Device_Help]
Parameters
C
- IRQLevel (USHORT)
- input - IRQ Interrupt number (0-F)
Assembler
MOV BX,IRQnum ; IRQ Interrupt number (0 - F)
Return Code
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.
Example Code
C
#include "dhcalls.h" USHORT APIENTRY DevHelp_UnSetIRQ (USHORT IRQLevel)