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osGetIntMask
osSetIntMask
Format
#include <ultra64.h>
OSIntMask osGetIntMask(void);
OSIntMask osSetIntMask(OSIntMask im);
What These Functions Do
The osGetIntMask and osSetIntMask functions get and set enabled interrupt masks.
The osGetIntMask call returns the mask of currently enabled hardware interrupts, and the osSetIntMask call allows the application to enable
and disable interrupts based on the provided mask. Following are the bits of the mask. The interrupt is enabled if the associated definition
below is bitwise OR'ed into the final mask.
OS_IM_SW1 CPU software interrupt 1
OS_IM_SW2 CPU software interrupt 2
OS_IM_CART Pak interrupt
OS_IM_PRENMI Pre-NMI interrupt
OS_IM_COUNTER CPU timer interrupt
OS_IM_SP RCP Signal Processor (SP) interrupt
OS_IM_SI RCP Serial Interface (SI) interrupt
OS_IM_AI RCP Audio Interface (AI) interrupt
OS_IM_VI RCP Video Interface (VI) interrupt
OS_IM_PI RCP Parallel Interface (PI) interrupt
OS_IM_DP RCP Display Processor (DP) interrupt
OS_IM_NONE No interrupts enabled
OS_IM_ALL All interrupts enabled
The interrupt mask is part of the thread context and is thus saved and
restored as threads yield and regain the CPU. All interrupts are enabled
for the thread at creation time by osCreateThread. These routines
are used sparingly by system threads and should not be needed by
application threads. Instead, applications should exploit thread
priorities for real time behavior and protection of critical regions.
See Also
osSetEventMesg
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Nintendo® Confidential
Warning: all information in this document is confidential and covered by a non-disclosure agreement. You are responsible for keeping this information confidential and protected. Nintendo will vigorously enforce this responsibility.
Copyright © 1998
Nintendo of America Inc. All rights reserved Nintendo and N64 are registered trademarks of Nintendo
Last updated January 1998
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