# MI_IsDmaBusy

## Syntax

  `#include <nitro/mi.h>`
  `BOOL MI_IsDmaBusy( u32 dmaNo )`

## Arguments

dmaNo | DMA channel used.

## Return Values

Returns whether the specified DMA channel is being used.

## Description

This function checks whether the specified DMA channel is being used. A `TRUE` return value indicates that it is still busy.

## Internal Operation

Uses the following I/O register: DMAn control register (0x40000B8 + 12n). (n is the DMA channel used.)

## See Also

`MI_DmaCopy*, MI_WaitDma`

## Revision History

2003/12/01 Initial version.

CONFIDENTIAL