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.
> 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
>>> 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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