Loading meh kernel above 0x10000

[brickhead20]

By the way, happy terrorist day.

I find that very distasteful.

[ChazZeromus]

Off topic but,
It's not a day for terrorists, its a day for Americans to blame half their problems at terrorists. Don't be fooled by the name

[brickhead20]

I believe actually it is a day to pay your respects to those who died unnecessarily in the terrorist attacks of 9-11.

American foreign policy is something else, and yes I don't agree with it either.

[ru2aqare]

Okay fine, is isn't extended. Okay, well maybe I'm wrong it's not like you weren't ever. Okay, if the IVT's point to where the handlers are, then where exactly are they? Go write a program or something. EDBA can also describe the interrupts too. Geez, I'm know alot but theres alot i don't know, and I'm not like 23 years old or anything.

By the way, happy terrorist day.

The IVT - the Interrupt Vector Table - always occupies the memory range 0 - 1024 (0 - 4*256). Each entry points to an interrupt handler, which (theoretically) may be anywhere in the first megabyte of memory. In practice, if you take control of the machine when booting, all the handlers will be either absent or in the BIOS area (0xC0000 - 0xFFFFF).

[ChazZeromus]

I believe actually it is a day to pay your respects to those who died unnecessarily in the terrorist attacks of 9-11.

American foreign policy is something else, and yes I don't agree with it either.

You don't scare me, you're just text!

The IVT - the Interrupt Vector Table - always occupies the memory range 0 - 1024 (0 - 4*256). Each entry points to an interrupt handler, which (theoretically) may be anywhere in the first megabyte of memory. In practice, if you take control of the machine when booting, all the handlers will be either absent or in the BIOS area (0xC0000 - 0xFFFFF).

Could you link me to where you got this? I'd appreciate it.

Wiki:

Real Mode

In the 8086 processor, the IDT resides at a fixed location in memory from address 0000h to 03ffh, and consists of 256 four-byte real mode pointers (256 * 4 = 1024 bytes of memory). In the 80286 and later, the size and locations of the IDT can be changed in the same way as it is done in protected mode, though it does not change the format of it. A real mode pointer is defined as a 16 bit segment address and a 16 bit offset into that segment. A segment address is expanded internally by the processor to 20 bits thus limiting real mode interrupt handlers to the first 1 megabyte of addressable memory. The first 32 vectors are reserved for the processor's internal exceptions, and hardware interrupts may be mapped to any of the vectors by way of a programmable interrupt controller.

A commonly used x86 Real Mode interrupt is 0x10, the VGA BIOS code to handle primitive screen drawing functions.

Got this from wiki, hope it's right.

[brickhead20]

Text it may be, but it wouldn't hurt to correct yourself and show a little respect for the dead. What if it were you and your family? I'm sure then you might give a little more thought to it. Perhaps there may be somebody on this forum who has lost a relation to these attacks, and declaring it "happy terrorist day" is a really immature and insensitive thing to say in that direction. I can't say that I have experienced the results of such a situation, but I imagine seeing innocent people blown apart is not best described by the word 'happy'. You should think more before you say these things.

On the OS side of things, I'm sure the Intel Manual will provide some insight in the direction of IVTs. You can download them from the Intel site.

Best wishes,
Richard

[suthers]

I believe actually it is a day to pay your respects to those who died unnecessarily in the terrorist attacks of 9-11.

American foreign policy is something else, and yes I don't agree with it either.

You don't scare me, you're just text!

He's not trying to scare you, it wasn't a threat, he was just making his views clear, and I also think that your comment was very distasteful, you shouldn't mock a tragedy like that, people in this very forum could have been affected by it...

The IVT - the Interrupt Vector Table - always occupies the memory range 0 - 1024 (0 - 4*256). Each entry points to an interrupt handler, which (theoretically) may be anywhere in the first megabyte of memory. In practice, if you take control of the machine when booting, all the handlers will be either absent or in the BIOS area (0xC0000 - 0xFFFFF).

Could you link me to where you got this? I'd appreciate it.

There isn't that much there that isn't shown in your wiki quote...

Geez, I'm know alot but theres alot i don't know, and I'm not like 23 years old or anything.

Age isn't always a good gauge of intelligence/maturity, but I wasn't quite sure are you asserting that you are younger or older than 23?
I originally thought that you where asserting that you where younger, but the fact that you chose a random age either means your 22 or your older...
Or then again you could have been being sarcastic and you are exactly 23...
Well anyway...

Jules

edit: As it happens I was right when I said that there where probably members of this forum affected by this attack
second edit: misread post sorry...

[ChazZeromus]

The Intel manuals do not cover the initial location of the IVT in startup real mode and what I pasted was from the wiki. As for respect for the dead, once someone dies their bodies decompose and become a reusable resource for the earth to cycle. So once a human is dead, they have lost their rights as a person that is alive. The memories and the impact they had on others maybe respected. If you didn't like hearing what I said you shouldn't have pointed it out because I didn't expect anyone else to. As for me being immature, that's your perspective and by others I may be viewed as someone who does not let an event that happened 7 years ago adversely affect my life. Of course my initial statements may have been misguiding, I just wanted to let everyone know that what happened happened, and now I know that this forum has lot's of people who still really care about that day.

Another extended off-track clarification I'd like to make, I've been hanging out in forums with younger people they tend to make outrageous comments such as mine(I didn't want mine to be outrageous towards others). And I notice people here really are above the their teen years, I'm 16 by the way, grammer and worry for things that really matter to them.

[suthers]

The IVT will be loaded in the 0x0 - 0x400 range...
Well, if you believe that the impact they had on others maybe respected, can I ask you do you really think that what you just said was respectful?
I didn't call you immature at any one point, I'm only 16 myself..., but I can truthfully say that I've never had urges to make 'extravagant' comments like yours...
Well anyway, no need to start a flamewar....
Jules

[ChazZeromus]

No, what I said wasn't respectful. But it doesn't mean that you can't just strive away from noting "respect" every now and then.

The IVT will be loaded in the 0x0 - 0x400 range...

What about it?

[suthers]

What about it?

Isn't that what you wanted to know?

Jules

[ChazZeromus]

Oh, I thought you quoted one of my quotes. Well, I have a plethora of PDFs and and webpages on my hard disk and hopefully they can prove useful as to telling me where the IVT is loaded. Well, I'll note that.

[Combuster]

Its there...

Table 8-1. 32-Bit Intel Architecture Processor States Following Power-up, Reset, or INIT
(...)
GDTR, IDTR
Base = 00000000H
Limit = FFFFH
AR = Present, R/W

[brickhead20]

@suthers: I hope you are on about somebody else, I haven't been affected directly by the attacks, so I suppose you know of somebody else on here that has? Nonetheless, its good to see that somebody agrees that the comment made was distasteful, so thank you.

@ChazZeromus: Respect for the dead is one of those figures of speech, it is of course respecting their memories and the things that they have done for you (or their relatives), and in this case to recognize and think about the fact that their deaths were unnecessary on a mass scale. It appears to me you are one of those people who make me really angry by saying "its fine, so long as I am happy...". I agree sometimes it is fun to drift from the point and make humour of things, but I don't agree that that was really the way to do it, or the day to do it on.

As for dead people having no rights, perhaps you are correct in some sense, but really this is a question of respecting the effect those deaths have upon the people still alive. Besides, unless you have died, how do you know what happens? I prefer the scientific school of thought, but I don't claim to know what happens completely. Perhaps you should think about what you are saying. If a member of your family died, would you be happy to have their dead bodies humiliated for example?

When I stand their on November the 11th when the canons go off (if I hear them/remember), I'll remember that all those dead are just rotten and not worth the unhappy thought...

Nonetheless, this argument is a detriment to the spirit of the day too, so perhaps this should stop here. Its a shame you cannot see your fault.

Aside from that, good, at least you checked the manual already, I didn't know, so I was just suggesting.

Best wishes,
Richard

[brickhead20]

I took a look at the Intel manual for you, and there is a small section on real mode interrupts on, and this is kind of ironic, and almost sick given the prior conversation, page 9-11, (current system programming manual 3A).

It describes where they are loaded and how to change them briefly, from what I recall.

Best wishes,
Richard