Recent content by logicman112

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    Who is ready to discuss Intel data sheets?

    OK the first question was not answered but I ask the second one. Who knows about ACPI? BIOS prepares some ACPI tables and data structures. What does the operating system do with them?
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    Who is ready to discuss Intel data sheets?

    But the process of interrupt is not used after pressing the power switch for the first time. The first time it causes CPU fetches the instructions of BIOS and in the platform mentioned it causes the CPU fan starts working too. That's why we need a block diagram to show the connection of the...
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    Who is ready to discuss Intel data sheets?

    We are going to explain exactly what happens when pressing the shut down switch. I have written the platform of our discussion(Pentium III, 815 and ICH2), All are ICs made by Intel. We want to find out if there is any power control IC on a motherboard? Or an auxiliary circuit? and probably the...
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    Who is ready to discuss Intel data sheets?

    How a computer is shut down? (Pentium III, 815/ICH2). ATX power connector has PSON#. Sometimes I press the shut down button when the system is up and running but nothing happens. I am actually looking for some block diagram to show the shut down process of a computer.
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    Who is ready to discuss Intel data sheets?

    I am studying Intel software developer data sheet and some questions come to the mind. Who can help me? Is there anybody interested in Intel chips like CPU and bridges?
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    What Determines Packet Size Over the Internet?

    Path MTU discovery is a protocol in Layer 3 and extra service which is asked by user. It can be activated by /proc file system on Linux machine. It sets MTU dynamically or in run time. It tests the path between source and destination and sets the MTU of the source machine to the the smallest...
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    What Determines Packet Size Over the Internet?

    MTU stands for "Maximum Transmission Unit". Each network physical interface like eth0 has a device driver module. Each device driver can change the default number of MTU for a network interface(like eth0). When you want to transmit an IP packet, it goes down through some layers and one of them...
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    What Determines Packet Size Over the Internet?

    size of IP packet is based on MTU. Default OS config has a default value for MTU like 1500. Besides some protocols query MTU of the next hop, Gateway. IP packet larger than MTU is fragmented by layer 3. (Another parameter is MSS of TCP layer, layer 4).
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    Electrical phenomenon in transformers

    Electrical machines by Stephan Chapman
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    The zero state response does not satisfy the diff equation. Why?

    Thanks uart. As you wrote, it seems that the chain rule of derivatives becomes false for f(t)*delta(t)
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    Transistor Base to Emitter Voltage

    BJT is in active region when: Nearly VCE > VBEon 1. What happens when VBE is lower than VBE(on)? All Transistor currents are nearly zero: IB=IC=IE=0 2. What happens when VBE is higher than VBE(on)? For simple Bias circuits VBE can not be higher than VBEon. Driving BE diode above VBEon...
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    The zero state response does not satisfy the diff equation. Why?

    If h(t)=(-e^(-4*t)+2*e^(-3*t))*u(t) is the impulse response, as its Laplace transform suggests, so it must satisfy "d2y/dt2+7*dy/dt+12*y=dx/dt+5*x" so(using the chain rule and our input is the unit impulse function, delta(t) ): y(t) = (-e^(-4*t)+2*e^(-3*t))*u(t) and x(t) = delta(t)...
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    The zero state response does not satisfy the diff equation. Why?

    If we have a linear system(it could be a RLC circuit) with the following differential equation: d2y/dt2+7*dy/dt+12*y=dx/dt+5*x So H(s) = (s+5)/((s+4)*(s+3)) = -1/(s+4)+2/(s+3)--> h(t) = (-e^(-4*t)+2*e^(-3*t))*u(t) (Please calculate the unit impulse response by Laplace transform and verify the...
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