Re: Doesn't need vertical retrace!

[Andreas Beck]

Hi !

> screen blinking a lot, I think. Anyway, there is another bigger problem,
> IMO, that switching to kernel mode, copying data structures, and returning
> back into user mode, may be too much time, and maybe when the ioctl returns,
> you haven't enough time to copy your buffer.

No. That shouldn't matter much. I once measured a full ioctl round trip on
my old 486 to take 600 cycles. Given even that machine (486/66), this gives
an extra delay of about 10 microseconds. Shouldn't be the crucial point.

CU, Andy

-- 
= Andreas Beck                    |  Email :  <[EMAIL PROTECTED]> =