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osAiGetStatus
Format#include <ultra64.h>
u32 osAiGetStatus(void);
What This Function Does
The osAiGetStatus, osAiGetLength, osAiSetFrequency, and osAiSetNextBuffer routines provide basic control for the AI (audio interface).
This function (osAiGetStatus) returns the hardware status of the audio interface. In this 32-bit value, only bits AI_STATUS_FIFO_FULL and AI_STATUS_DMA_BUSY contain useful information. AI_STATUS_FIFO_FULL is set when both audio DMA registers have been programmed. AI_STATUS_DMA_BUSY is set when DMA is in progress.
Notes
For hardware version 1.0, the audio DMA length register is only 15 bits long and thus supports a maximum transfer size of 32 Kbytes. In the final release, this register is extended to 18 bits to support a transfer of 256 Kbytes.
See Also
osAiGetLength
osAiSetFrequency
osAiSetNextBuffer
osTvType
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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 |