Figure 93 - The Dma3Cnt_L Register; Figure 94 - The Dma3Cnt_H Register - Nintendo GAME BOY ADVANCE Programming Manual

100
12.3.3 Word Count
Specifies the number of bytes transferred by DMA 3, using 16 bits. The number can be specified in the
range 0001h~FFFFh~0000h (when 0000h is set, 10000h bytes are transferred).
Thus, in 16-bit data transfer mode, up to 10000h x 2=20000h bytes can be transferred, and in 32-bit data
transfer mode, up to 10000h x 4=40000h bytes can be transferred.
Address Register
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0DCh DMA3CNT_L
12.3.4 DMA Control
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Address Register
0DEh DMA3CNT_H
AGB-06-0001-002-B13
Released: May 27, 2005
Game Boy Advance Programming Manual
Figure 93 - The DMA3CNT_L Register
Figure 94 - The DMA3CNT_H Register
DMA Repeat
0: OFF
1: ON
DMA Transfer Type
0: 16-bit Transfer
1: 32-bit Transfer
Game Pak Data Request Transfer Flag
0: Disable(Normal)
1: Enable
DMA Start Timing
00: Start Immediately
01: Start in a V-blank Interval
10: Start in an H-blank Interval
11: Synchronize with display and start
Interrupt Request Enable Flag
0: Disable
1: Enable
DMA Enable Flag
0: OFF
1: ON
Attributes
W
Attributes
R/W
Destination Address Control Flag
00: Increment after Transfer
01: Decrement after Transfer
10: Fixed
11: Increment/Reload after Transfer
Source Address Control Flag
00: Increment after Transfer
01: Decrement after Transfer
10: Fixed
11: Prohibited Code
© 1999-2005 NINTENDO
May 25, 2005
Initial Value
0000h
Initial-Value
0000h