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| author | Jens Arnold <amiconn@rockbox.org> | 2006-11-02 20:50:50 +0000 |
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| committer | Jens Arnold <amiconn@rockbox.org> | 2006-11-02 20:50:50 +0000 |
| commit | 83aded979f074b6d48cd05db8f7f991e51372e38 (patch) | |
| tree | b8bad1edd08bee7d8659cb1bb582fc305a9d70fa /apps/lang | |
| parent | d86350c9fad03356990e0844f1d35502e35b1d3b (diff) | |
| download | rockbox-83aded979f074b6d48cd05db8f7f991e51372e38.tar.gz rockbox-83aded979f074b6d48cd05db8f7f991e51372e38.zip | |
H300: (1) Use DMA for LCD updates, with auto-aligned line reads. Speeds up LCD updates by ~ 75% at 11MHz and 45MHz. Only ~ 11% speedup at 124MHz due to (2). (2) Less aggressive LCD transfer timing at 124MHz. With the previous timing, slightly corrupted display contents was reported, and with DMA transfers at least 4 waitstates are needed to make updates work at all. * A table in system-iriver.c shows settings for all integer multiples of the base clock frequency (info for developers, not yet complete).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11418 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/lang')
0 files changed, 0 insertions, 0 deletions