shaul wrote:
>
> > On Thu, Feb 04, 1999 at 12:51:28PM +0800, ivan wrote:
> > > >
> > > >Mmmh. What do you need this for?
> > >
> > > Primarily learning but I would like a few very simple highly optimised
> > > graphics routines for my machine. Line, circle, box and fill for e.g.
> >
>
> Although
On Tue, Feb 09, 1999 at 11:53:26PM +0200, shaul wrote:
> > On Thu, Feb 04, 1999 at 12:51:28PM +0800, ivan wrote:
> > > >
> > > >Mmmh. What do you need this for?
> > >
> > > Primarily learning but I would like a few very simple highly optimised
> > > graphics routines for my machine. Line, circle,
> On Thu, Feb 04, 1999 at 12:51:28PM +0800, ivan wrote:
> > >
> > >Mmmh. What do you need this for?
> >
> > Primarily learning but I would like a few very simple highly optimised
> > graphics routines for my machine. Line, circle, box and fill for e.g.
>
Although you have already decided to use
>
> INT 10h is the video BIOS - I want to set the video mode directly.
>
> By using INT 10h I don't have to learn and programme the card registers -
> the BIOS takes care of this.
>
> Why is the video bios not available from protected mode ?
>
> Does this mean that making superfast graphics (a
> I don't need it, but just out of curiosity, is there a more low-level
> interface available? Or would one have to write a kernel module?
>
> I'm thinking, if you need to do non-standard things with the control lines
> (say for a dongle).
This sort of thing belongs in the drivers. Setting contr
Many thanks - this is exactly what I wanted to know.
Ivan.
At 01:21 AM 2/8/99 +0200, you wrote:
>
>> INT 10h is the video BIOS - I want to set the video mode directly.
>
>> By using INT 10h I don't have to learn and programme the card registers -
>> the BIOS takes care of this.
>
>Doing that wi
ivan:
> INT 10h is the video BIOS - I want to set the video mode directly.
>
> By using INT 10h I don't have to learn and programme the card registers -
> the BIOS takes care of this.
>
> Why is the video bios not available from protected mode ?
It's trying to protect one program from another; a
On Fri, 5 Feb 1999, ivan wrote:
> INT 10h is the video BIOS - I want to set the video mode directly.
>
> By using INT 10h I don't have to learn and programme the card registers -
> the BIOS takes care of this.
>
> Why is the video bios not available from protected mode ?
that's how the thigs ar
On Fri, Feb 05, 1999 at 11:52:01PM +1100, Jiri Baum wrote:
> I'm thinking, if you need to do non-standard things with the control lines
> (say for a dongle).
No problem getting IO port access (eg for the parallel port). See outb(2),
and the IO port programming mini-HOWTO.
Hamish
--
Hamish Moffa
INT 10h is the video BIOS - I want to set the video mode directly.
By using INT 10h I don't have to learn and programme the card registers -
the BIOS takes care of this.
Why is the video bios not available from protected mode ?
Does this mean that making superfast graphics (as in DOS "demo's")
> I don't need it, but just out of curiosity, is there a more low-level
> interface available? Or would one have to write a kernel module?
>
> I'm thinking, if you need to do non-standard things with the control lines
> (say for a dongle).
>
In theory it is possible to do things like redirectio
Helge Hafting:
> Linux has device drivers doing this for you already! No problem! The
> device drivers handles irq's, io-addresses and buffering. A linux
> program simply open a serial device as if it were a file and reads from
> it and writes to it using normal stuff like fread(), fwrite(), fpr
On Thu, Feb 04, 1999 at 12:09:18AM +0800, ivan wrote:
> I tried checking the source code of svgalib - if it's going to remain as
> difficult as it seems I may find a simpler project.
>
> I was hoping that there would be a simple method of getting permission from
> the kernel for this operation and
On Thu, Feb 04, 1999 at 12:51:28PM +0800, ivan wrote:
> >
> >Mmmh. What do you need this for?
>
> Primarily learning but I would like a few very simple highly optimised
> graphics routines for my machine. Line, circle, box and fill for e.g.
Well, if you don't need them for some very special purp
On Wed, 3 Feb 1999, David Wright wrote:
> I don't think it would be sufficient to be root. AIUI, when
> any non-kernel process is running, its privilege level is
> set so it can't do any I/O etc. itself.
The root setuid programs in Linux on Intel x86 may perform I/O, however
they may not use inte
Quoting [EMAIL PROTECTED] ([EMAIL PROTECTED]):
> I suppose there are cases where this is valid, but for my original point about
> communciations - it just isn't feasible to use IRQ4 (the first comm port) by
> more than one program concurrently, is it?
>
> In my case, I had reprogrammed IRQ4 so w
*-ivan <[EMAIL PROTECTED]>
|
| You could also write your own (dirty!) kernel
| >device driver module which allows you to access hardware directly. This is
| >not too hard.
| >
|
| Thanks - I'm thinking about this now. Are there any references other than
| the kernel hackers guide on writing drive
> In a message dated 2/3/99 12:54:34 PM Central Standard Time,
> [EMAIL PROTECTED] writes:
>
> > That's just not possible with a multi-user multi-tasking OS,
> > particularly one like unix which has to present the same abstract
> > model on completely different hardware.
> >
> > If one progr
>
>Mmmh. What do you need this for?
Primarily learning but I would like a few very simple highly optimised
graphics routines for my machine. Line, circle, box and fill for e.g.
I have looked several times at svgalib but all I want is the simple
functions - it seems like overkill to include svgal
On Wed, Feb 03, 1999 at 02:08:26PM -0500, [EMAIL PROTECTED] wrote:
> In my case, I had reprogrammed IRQ4 so when a char came in from the modem, I
> could stuff it to a buffer for use later on, and send data to the buffer (and
> ultimately use the IRQ to send it back out again when the buffer was fu
On Thu, Feb 04, 1999 at 12:09:18AM +0800, ivan wrote:
>
> >
> >If this code can work at all, then only if it is run as root, and even then
> >I think you need a way to get permission from kernel (although I am not
> >sure). Please check the source code of svgatextmode and svgalib.
>
> I tried che
In a message dated 2/3/99 12:54:34 PM Central Standard Time,
[EMAIL PROTECTED] writes:
> That's just not possible with a multi-user multi-tasking OS,
> particularly one like unix which has to present the same abstract
> model on completely different hardware.
>
> If one program "messes with"
Sorry, forgot to do /group/ reply...
Quoting [EMAIL PROTECTED] ([EMAIL PROTECTED]):
> In a message dated 2/3/99 9:55:07 AM Central Standard Time,
> [EMAIL PROTECTED] writes:
[snip]
> > The whole purpose of the Linux kernel is to protect the hardware from the
> > user processes.
>
> I for one sa
In a message dated 2/3/99 9:55:07 AM Central Standard Time,
[EMAIL PROTECTED] writes:
> > However I am stuck now on implementing interrupts - specifically int 0x10.
>
> Are you poking fun? Do you really think it should be allowed for any user
to
> program interrupts?
>
> The whole purpose o
>Are you poking fun? Do you really think it should be allowed for any user to
>program interrupts?
No - not poking fun and I don't believe that any user should have access to
interrupts. This programme is compiled/run as root.
>
>The whole purpose of the Linux kernel is to protect the hardware
On Wed, Feb 03, 1999 at 08:01:07PM +0800, ivan wrote:
> Sorry again for the off-topic post - I've made what I think is quite a lot
> of progress in as much as I can now get the asssembler compiled and
> sometimes running.
>
> However I am stuck now on implementing interrupts - specifically int 0x1
Hi, Ivan
Sorry again for the off-topic post - I've made what I think is quite a lot
of progress in as much as I can now get the asssembler compiled and
sometimes running.
However I am stuck now on implementing interrupts - specifically int 0x10.
Everytime I run this code I get a
Sorry again for the off-topic post - I've made what I think is quite a lot
of progress in as much as I can now get the asssembler compiled and
sometimes running.
However I am stuck now on implementing interrupts - specifically int 0x10.
Everytime I run this code I get a segmentation fault error.
28 matches
Mail list logo
