Integrated crypto

Rogelio Serrano rogelio at smsglobal.net
Wed Mar 31 00:45:52 PST 2004


What about getting measuring the clock skew between the 
processor and PIT?

On 2004-03-31 16:52:43 +0800 Adrian Fisher 
<mobiletiw at fishersinter.net> wrote:

> For diskless machines it should be able to get a seed value 
> derived from the 
> unix time and the temperature of the processor because most 
> modern systems 
> are able to show you the temperature through BIOS so it should 
> be possible to 
> access this via Linux without the need for a disk.
> 
> Ade.
> 
> Ian Molton wrote:
> 
>> On Wed, 31 Mar 2004 13:04:01 +1000
>> Ryan.Oliver at pha.com.au wrote:
>> 
>> 
>>>>> Why not use the gameport, you score 4 A/D's...
>>>>> 
>>>> the gameport has precisely 0 A-Ds.
>>>> 
>>>> 
>>> So how exactly do you get an 8bit value for each of the 4 
>>> axis
>>> when fed a 0-5V analog input?
>>> 
>> 
>> its a hack. it counts pulses from an oscillator whose 
>> frequency is
>> controlled by the resistors. after a certain period the pulse 
>> count is
>> read and reset to 0.
>> 
>> the BBC micro with its 'analogue port' actually had lower 
>> latency than
>> the PC gameport.
>> 
>> 
> 




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