# MI_SetMainMemoryPriority

## C Specification

  `#include <nitro/mi.h>`
  `void MI_SetMainMemoryPriority( MIProcessor proc );`

## Arguments

proc | Access priority setting

## Return Values

None.

## Description

This function sets the priority for access to the main memory. It sets the priority for instances when both ARM9 and ARM7 are accessed simultaneously. The argument `proc` is in `MIProcessor` enumeration format and has the following meanings:

`MI_PROCESSOR_ARM9` | Gives priority to ARM9.
`MI_PROCESSOR_ARM7` | Gives priority to ARM7.

## Internal Operation

Accesses the `EXMEMCNT` I/O register `(0x4000204)`.

## See Also

`MI_GetMainMemoryPriority`, `MI_DispMemDmaCopy`, `MI_HBlankDmaCopy`

## Revision History

08/26/2004 Added MI_DispMemDmaCopy to See Also.
12/25/2003 enum name changed to `MIProcessor`.
12/18/2003 Initial version.