dxad_w / * Write address addition value * / 

Constant	Description
DMA_SCU_W0	Do not add
DMA_SCU_W2	Add 2 bytes
DMA_SCU_W4	Add 4 bytes
DMA_SCU_W8	Add 8 bytes
DMA_SCU_W16	Add 16 bytes
DMA_SCU_W32	Add 32 bytes
DMA_SCU_W64	Add 64 bytes
DMA_SCU_W128	Add 128 bytes

 dxmod / * mode bit * / 

Constant	Description
DMA_SCU_DIR	Direct mode
DMA_SCU_IN_DIR	Indirect mode

 dxrup / * Read address update bit * /
dxwup / * Write address update bit * / 

Constant	Description
DMA_SCU_KEEP	Keep
DMA_SCU_REN	Update

 dxft / * Activation factor selection bit * / 

Constant	Description
DMA_SCU_F_VBLK_IN	V-blank-IN signal reception
DMA_SCU_F_VBLK_OUT	V-blank-OUT signal reception
DMA_SCU_F_HBLK_IN	H-blank-IN signal reception
DMA_SCU_F_TIM0	Timer 0 signal reception
DMA_SCU_F_TIM1	Timer 1 signal reception
DMA_SCU_F_SND	Sound-Req signal reception
DMA_SCU_F_SPR	Sprite drawing end signal received
DMA_SCU_F_DMA	Set DMA activation factor bit