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oops, I used RGB565 for testing, but used RGBA8888 for calculation, burst size of 256bytes doesn't make sense for FCRAM anyway
| DMA size
| DMA size
0 - 64 bytes
0 - 4 words (32 bytes)
1 - 128 bytes
1 - 8 words (64 bytes)
2 - 256 bytes
2 - 16 words (128 bytes)
3 - ???
3 - ???
FCRAM doesn't support DMA size 3.
FCRAM doesn't support DMA size 3, as it can only burst up to 16 words (128 bytes), and will show a black screen instead.
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| 31-16
| 31-16