

#include <nitro/mi.h>void MI_HBlankDmaCopy32( u32 dmaNo, const void* src, void* dest, u32 size
);void MI_HBlankDmaCopy16( u32 dmaNo, const void* src, void* dest, u32 size
);void MI_HBlankDmaCopy32If( u32 dmaNo, const void* src, void* dest, u32
size );void MI_HBlankDmaCopy16If( u32 dmaNo, const void* src, void* dest, u32
size );| dmaNo | DMA channel used. |
| src | The transfer source address. |
| dest | The transfer destination address. |
| size | Transfer size. |
None.
This function uses DMA to copy a H-Blank. When a H-Blank starts, DMA starts.
When using this mode, set the access right to main memory to ARM9 priority. Otherwise, the screen may not display properly because of a delay as ARM7 accesses main memory and starts up DMA memory. The access right priority can be specified with MI_SetMainMemoryPriority().
The functions MI_HBlankDmaCopy32If and MI_HBlankDmaCopy16If generate DMA interrupts when DMA terminates.
Uses the following IO registers: DMAn source register (0x40000B0 + 12n), DMAn destination register (0x40000B4 + 12n), and DMAn control register (0x40000B8 + 12n). (n is the DMA channel used.))
MI_DmaCopy*
MI_SetMainMemoryPriority
2004/08/26 Added description about the setting of the ARM9 priority to access the main memory when using DMA memory.
2003/12/01 Initial version.
CONFIDENTIAL