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osAiGetStatus
Syntax#include <ultra64.h>
u32 osAiGetStatus(void);
Explanation
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 March 1998 |