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ubb-vga/README: added to do list

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Werner Almesberger 2011-05-01 23:32:24 -03:00
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ubb-vga/README
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@ -79,3 +79,15 @@ Display Pixels missing Quality
left/right left/right
----------------------- --------------- ------------------ ----------------------- --------------- ------------------
Xenon XEN-1510T 5 / 25 good Xenon XEN-1510T 5 / 25 good
To do
-----
- use timer half interrupt and WAIT to synchronize (less bus traffic and
hopefully better granularity)
- recover from DMA lockup
- use color cube map (5x5x5 bits)
- read/write raw frame buffer
- consider prefetching first word of each line, to make DRAM controller
open the row and reduce DMA startup latency