Re: IRQ vector assignment for system call exception

["linux-os \(Dick Johnson\)" <linux-os@analogic.com>]

On Thu, 8 Dec 2005, Coywolf Qi Hunt wrote:

> 2005/12/8, yen <yen@eos.cs.nthu.edu.tw>:
>> Hi:
>>    I have a quwstion. Why the number 128 is reserver for system call exception in
>> interrupt vectors? Why not other numbers? Are there any historical reasons?
>> thanks.
>>
>
> 0x80 stands in the middle of [0..0xff].
> --
> Coywolf Qi Hunt
> http://sosdg.org/~coywolf/

If he's looking for 'secret codes' in the kernel, he might look
at:
 	LINUX_REBOOT_MAGIC2
 	LINUX_REBOOT_MAGIC2B
 	LINUX_REBOOT_MAGIC2C

... in linux-`uname -r`/include/linux/reboot.h Hint: Cvt dec to hex.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.55 BogoMips).
Warning : 98.36% of all statistics are fiction.
.

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