 N64® Functions Menu |
al - Audio Library Functions gDP - DP GBI Macros gdSP - General GBI Macros gSP - SP GBI Macros gt - Turbo Microcode RDP gu - Graphics Utilities Math - Math Functions nuSys - NuSystem os - N64 Operating System sp - Sprite Library Functions uh - Host to Target IO 64DD - N64 Disk DriveNintendo® Confidential |
|
|
|
|
|
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 enabledThe 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
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|
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 |