DevHlp GetIRQMask: Difference between revisions
Created page with "Retrieve the mask state of an IRQ level This function reads the current IRQ mask state for the specified IRQ. ==Parameters== Specified IRQ level. ==Exit== * EAX=0, mask disabled (IRQ enabled). * EAX=1, mask enabled (IRQ disabled) ==Assembly language== <pre> ; dh_GetIRQMask - Retrieve a specified IRQ mask state ; ; This function reads the current IRQ mask state for the specified IRQ. ; ; ENTRY AL = IRQ ; ; E..." |
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{{DISPLAYTITLE:DevHlp_GetIRQMask}} | |||
Retrieve the mask state of an IRQ level | Retrieve the mask state of an IRQ level | ||
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[[Category:DevHlps]] | |||
Latest revision as of 15:28, 18 May 2025
Retrieve the mask state of an IRQ level
This function reads the current IRQ mask state for the specified IRQ.
Parameters
Specified IRQ level.
Exit
- EAX=0, mask disabled (IRQ enabled).
- EAX=1, mask enabled (IRQ disabled)
Assembly language
; dh_GetIRQMask - Retrieve a specified IRQ mask state
;
; This function reads the current IRQ mask state for the specified IRQ.
;
; ENTRY AL = IRQ
;
; EXIT-SUCCESS
; EAX - 0 = mask disabled (IRQ enabled)
; - 1 = mask enabled (IRQ disabled)
;
; EXIT-FAILURE
; NONE
;
MOV AL,IRQ whose mask state is to be retrieved
MOV DL,DevHlp_GetIRQMask
CALL DevHlp
JC Error