 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 |
|
|
|
|
|
osGetCount
Format#include <ultra64.h>
u32 osGetCount(void);
What This Function Does
It returns the current value of the MIPS R4300 Count register, a free running counter that increments at half the CPU clock speed. This counter increments at 46.875 Mhz and each counter tick represents approximately 21.33 nanoseconds. When the counter reaches its maximum value, it will roll over to zero and continue. Because the counter is 32 bits long, the counter will wrap approximately every 92 seconds.
See OS_CYCLES_TO_NSEC for useful macros for converting to and from counter cycle time and nanoseconds or microseconds.
The counter value may be used as a pseudo-random number generator or for short duration timing purposes.
See Also
OS_CYCLES_TO_NSEC
osTvType
osGetTime
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|
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 |