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LCD timing


Currently I write a driver for LCD (ks0108 based). Unfortunately writing to
the display data RAM is very  slow (~10 us) and if I write 1024 bytes it
takes more than 10 ms. But as this routine in the kernel, most of this time
is just wasted. Since the display has no interrupt pin the checking of busy
is only possible with polling (continuously reading status register).

Has any suggestion to increase the efficiency?

Thanks in advance,

Problems with Windows - Reboot.
Problems with Linux       - Be root.

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