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 DMA level 1 waiting flag (= 0: stop / = 1: standby)  
 DMA level 1 write address update bit  
 DMA level 2 enable bit (= 0: Disable / = 1: Enable)  
 DMA level 2 start bit (= 0: stop / = 1: start)  
 DMA level 2 mode bit (= 0: direct mode / = 1: indirect mode)  
 DMA level 2 operating flag (= 0: Stop / = 1: Operation)  
 DMA level 2 read address addition value (= 0: Do not add / = 1: Add 4 bytes)  
 DMA level 2 read address update bit  
 DMA Level 2 Waiting Flag (= 0: Stop / = 1: Waiting)  
 DMA level 2 write address update bit  
 DSP program control port, program end interrupt flag  
 DSP program control port, pause execution flag during program execution 
 (= 0: not executed / = 1: executed) 

 abbreviation 
 address 
 bit 
 Contents 
D1WA2-0
25FE002CH
2-0
 
 DMA level 1 write address addition value 
 = 000B: not added 
 = 001B: 2 bytes added 
 = 010B: 4 bytes added 
 = 011B: 8Byte addition 
 = 100B: 16Byte addition 
 = 101B: 32Byte addition 
 = 110B: 64Byte addition 
 = 111B: 128Byte addition 
D1WT
25FE007CH
9
D1WUP
25FE0034H
8
D1W26-0
25FE0024H
26-0
 
 DMA level 1 export address 
D2C11-0
25FE0048H
11-0
 
 DMA level 2 transfer byte count 
D2EN
25FE0050H
8
D2FT2-0
25FE0054H
2-0
 
 DMA level 2 activation factor selection bit 
 = 000B: V-blank-IN reception and enable bit set 
 = 001B: V-blank-OUT reception and enable Bit set 
 = 010B: H-blank-IN reception and permission bit set 
 = 011B: Timer 0 reception and permission bit set 
 = 100B: Timer 1 reception and permission bit set 
 = 101B: Sound Req reception and permission bit set 
 = 110B: Sprite drawing end and permission bit set 
 = 111B: DMA start bit set and permission bit set 
D2GO
25FE0050H
0
D2MOD
25FE0054H
24
D2MV
25FE007CH
12
D2RA
25FE004CH
8
D2RUP
25FE0054H
16
D2R26-0
25FE0040H
26-0
 
 DMA level 2 read address 
D2WA2-0
25FE004CH
2-0
 
 DMA level 2 write address addition value 
 = 000B: No addition 
 = 001B: 2Byte addition 
 = 010B: 4Byte addition 
 = 011B: 8Byte addition 
 = 100B: 16Byte addition 
 = 101B: 32Byte addition 
 = 110B: 64Byte addition 
 = 111B: 128Byte addition 
D2WT
25FE007CH
13
D2WUP
25FE0054H
8
D2W26-0
25FE0044H
26-0
 
 DMA level 2 export address 
E
25FE0080H
18
EP
25FE0080H
25

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