lkml.org 
[lkml]   [2000]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Direct access to hardware
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 |
|

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:57    [W:0.150 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site