Messages in this thread | | | Date | Mon, 24 Jul 2000 14:52:40 +0200 | From | Marc Lehmann <> | Subject | Re: Direct access to hardware |
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On Mon, Jul 24, 2000 at 10:48:36AM +0100, James Sutherland <jas88@cam.ac.uk> wrote: > suitable for ye olde CRT, ye olde CRT just rejects it and starts flashing > a little LED on the front. Only valid signals get through.
Rubbish. Only a subset of monitors do that. And what's worse, just because my belinea 10-70-95 seems to ignore invalid signals *most of the time*, you can fry it within 6 seconds by switching from 1600x1200x70 to 320x200x50 and back with exactly the right timing. Can easily be done with xfree, as I have shown repeatedly. A lot of monitors are designed that poorly.
You mustn't generalize from "my monitor is sane" to "every monitor is sane".
And there is _no_ way to verify this.
> Now, the drive CANNOT tell which commands are "valid" and which are not - > so the OS must do it for the drive.
Again, the OS cannot decide that. Besides, "flash new firmware" *is* a valid command for the drive.
Besides, almost every new invention started as a "non-standard" extension. Linux shouldn't mindlessly inhibit innovation.
-- -----==- | ----==-- _ | ---==---(_)__ __ ____ __ Marc Lehmann +-- --==---/ / _ \/ // /\ \/ / pcg@opengroup.org |e| -=====/_/_//_/\_,_/ /_/\_\ XX11-RIPE --+ The choice of a GNU generation | |
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