From: "Kendall Bennett" <KendallB@scitechsoft.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: linux-kernel@vger.kernel.org, linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [Linux-fbdev-devel] Generic VESA framebuffer driver and Video card BOOT?
Date: Thu, 21 Oct 2004 12:36:59 -0700 [thread overview]
Message-ID: <4177AD6B.8391.20F028B0@localhost> (raw)
In-Reply-To: <20041020190846.GA21315@elf.ucw.cz>
Pavel Machek <pavel@ucw.cz> wrote:
> > Yes, but there is only a very small set of PC hardware features you need
> > to implement, and most BIOS'es only look at those things for timing
> > purposes. Unfortunately there is no standard for how BIOS'es do internal
> > timing and delay loops, so we emulate them all (8253 timers, speaker
> > ports and CMOS time/date support ;-).
>
> Hmm, that does not seem that bad. Did you need to emulate interrupt
> controller, too? That one seemed most scary to me.
No. Only software interrupts. The BIOS never deals with hardware
interrupts since there is no standard, reliable way to hook them from
real mode so it never uses them ;-)
Regards,
---
Kendall Bennett
Chief Executive Officer
SciTech Software, Inc.
Phone: (530) 894 8400
http://www.scitechsoft.com
~ SciTech SNAP - The future of device driver technology! ~
next prev parent reply other threads:[~2004-10-21 19:52 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-14 19:02 Generic VESA framebuffer driver and Video card BOOT? Kendall Bennett
2004-10-15 0:27 ` [Linux-fbdev-devel] " Antonino A. Daplas
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 21:51 ` Antonino A. Daplas
2004-10-15 23:20 ` Jon Smirl
2004-10-15 23:51 ` Kendall Bennett
2004-10-15 23:58 ` Jon Smirl
2004-10-19 21:15 ` Pavel Machek
2004-10-16 1:50 ` Antonino A. Daplas
2004-10-16 2:03 ` Jon Smirl
2004-10-18 19:34 ` Kendall Bennett
2004-10-18 20:34 ` Richard Smith
2004-10-18 20:47 ` Kendall Bennett
2004-10-18 21:04 ` Richard Smith
2004-10-18 21:16 ` Jon Smirl
2004-10-18 22:34 ` Richard Smith
2004-10-18 23:28 ` Jon Smirl
2004-10-19 0:18 ` Richard Smith
2004-10-19 0:55 ` Kendall Bennett
2004-10-19 1:39 ` Richard Smith
2004-10-19 17:54 ` Kendall Bennett
2004-10-19 21:48 ` Pavel Machek
2004-10-20 17:01 ` Kendall Bennett
2004-10-20 19:08 ` Pavel Machek
2004-10-21 19:36 ` Kendall Bennett [this message]
2004-10-19 21:42 ` Pavel Machek
2004-10-15 12:05 ` Gerd Knorr
2004-10-15 12:38 ` Geert Uytterhoeven
2004-10-15 12:45 ` Alan Cox
2004-10-19 21:54 ` Pavel Machek
2004-10-15 13:13 ` Gerd Knorr
2004-10-17 12:07 ` Martin Waitz
2004-10-18 8:36 ` Gerd Knorr
2004-10-18 11:39 ` Martin Waitz
2004-10-18 12:10 ` Gerd Knorr
2004-10-18 20:21 ` Helge Hafting
2004-10-18 20:42 ` Oliver Neukum
2004-10-19 16:57 ` Martin Waitz
2004-10-15 18:29 ` Venkatesh Pallipadi
2004-10-16 9:01 ` Nigel Cunningham
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 13:48 ` Helge Hafting
2004-10-15 18:36 ` Kendall Bennett
2004-10-15 21:44 ` Helge Hafting
2004-10-15 22:12 ` Kendall Bennett
2004-10-16 0:41 ` [Linux-fbdev-devel] " Antonino A. Daplas
2004-10-26 11:14 ` Paulo Marques
2004-10-27 1:58 ` Kendall Bennett
2004-10-27 11:11 ` Paulo Marques
2004-10-27 19:52 ` Kendall Bennett
2004-10-15 21:51 ` Antonino A. Daplas
2004-10-16 17:44 ` Jon Smirl
2004-10-18 19:34 ` [Linux-fbdev-devel] " Kendall Bennett
2004-10-19 21:00 ` Pavel Machek
2004-10-19 21:11 ` Pavel Machek
2004-10-20 17:01 ` [Linux-fbdev-devel] " Kendall Bennett
2004-10-20 17:31 ` Pavel Machek
2004-10-20 18:44 ` Kendall Bennett
2004-10-20 19:10 ` Pavel Machek
2004-10-21 19:36 ` Kendall Bennett
2004-10-21 20:47 ` Richard Smith
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