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os - N64 Operating System sp - Sprite Library Functions uh - Host to Target IO 64DD - N64 Disk DriveNintendo® Confidential |
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osDpGetCounters
Syntax#include <ultra64.h> void osDpGetCounters(u32 *array);
Explanation
It returns the values of four internal performance counters from the display processor (DP).
The array argument must point to a buffer that is large enough to hold four 32-bit values. The elements of the array are:
- The CLOCK counter - This counter is incremented by the free running RCP clock. For NTSC systems, this counter increments at 60.85 Mhz and each counter tick represents approximately 16.43 nanoseconds. For PAL systems, this counter increments at 62.07 Mhz and each counter tick represents approximately 16.11 nanoseconds.
- The CMD counter - This counter is incremented once every clock cycle when the RDP has work to do. The RSP places RDP commands in a FIFO for execution. If this FIFO is not empty, the counter is incremented.
- The PIPE counter - This counter is incremented when the internal RDP pipeline is not stalled while waiting for memory accesses to occur.
- The TMEM counter - This counter is incremented when the texture memory is being loaded.
- DPC_CLR_TMEM_CTR
- DPC_CLR_PIPE_CTR
- DPC_CLR_CMD_CTR
- DPC_CLR_CLOCK_CTR
osDpSetStatus
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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 March 1998 |