KR19980074293A - Clock adjustment method of personal computer using software and device therefor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clock adjustment method of a personal computer using software and a device thereof, comprising: a super I / O chip 200 for programming and outputting a register value embedded through a plurality of GPI / Os, and the super I / O. A clock chip 100 that receives a value output through the GPI / O pin of the chip 200 through a plurality of input terminals and outputs a corresponding main clock signal, and a GPI / O of the super I / O chip 200. The CPU 300, which is driven by receiving a value output through the pin as a plurality of input terminals, is included to facilitate adjustment of the clock and multiplication of the CPU when upgrading the CPU, which is the main controller of the personal computer.

Description

Clock adjustment method of personal computer using software and device therefor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal computer, and more particularly to a personal computer using software for adjusting the clock and multiplication of a CPU when upgrading a central processing unit (CPU), which is a main control unit in a personal computer. A clock adjusting method and apparatus therefor.

When upgrading a personal computer, it is necessary to adjust the clock. In this case, the main clock generated from the clock chip mounted on the motherboard must be adjusted. The clock must be multiplied.

As described above, the clock chip includes two pin heads for adjusting the generated main clock and two pin heads for multiplying the main clock. The clock chip outputting the main clock outputs a clock of 50 MHz, 60 MHz, or 66 MHz, respectively. For this clock output, two 3-pin heads are used, and two and three pin heads have zero and one. Using the combination of to generate the required clock. In addition, the clocks actually used are multiplied by using the three 50 MHz, 60 MHz, or 66 MHz clocks. For the multiplication, the 3-pin heads are connected to the 2-pins of the CPU, respectively, and 0 and 1 of each pin head are used. By using a combination of 1.5 times, will be multiplied, such as 2.5 times or 2.5 times. For example, if you double the frequency of 60MHz, the CPU will operate at a frequency of 120MHz.

Conventionally, the clock adjustment and multiplication of the CPU will be described with reference to a schematic wiring diagram of multiplying the clock used in the CPU of the personal computer of FIG. 1. The third input terminal Sel 3 and the fourth input terminal of the CPU 30 are described. There is (Sel 4), and its input is adjusted to the first jumper 12 and the second jumper 22 of the first terminal 10 and the second terminal 20. That is, if a signal of '1' is to be input into the third input terminal Sel 3, the third input terminal is connected by connecting pins 1 and 2 of the first jumper 12 of the first terminal 10. A signal of '1' is input to (Sel 3). At this time, the driving power supply (Vcc) is connected to pin 1 and is applied to the third input terminal (Sel 3) of the CPU 30 through pin 2 as a signal of '1' which is a high signal. Likewise, if a low signal of '0' is to be input, the third input terminal (Sel 3) is connected when pins 2 and 3 of the first jumper 12 of the first terminal 10 are connected. '0' is entered in the field. Of course, the fourth input terminal Sel 4 may also input a signal of '1' or '0' by connecting pins 1, 2 and 3 of the second jumper 22 of the second terminal 20. This is because the first jumper 12 and the second jumper 22 and the third input terminal Sel 3 and the fourth input terminal Sel 4 are connected in parallel, respectively.

That is, the desired signal is input in this manner, and the number of four cases can be generated by connecting the first jumper 12 and the second jumper 22. In this case, the number of the third input terminal (Sel 3) and the fourth input terminal (Sel 4) according to the connection state of pins 1 to 3 of the first jumper 12 and the second jumper 22 is' Four types, 0-0 ',' 0-1 ',' 1-0 'and' 1-1 ', may be input. The multiplication of the clock is determined for the number in this case.

In this case, referring to the connection diagram of FIG. 2 for generating a basic clock from a clock chip of a conventional personal computer, the third jumper 42 and the third terminal 40 may also be used to generate a basic clock as in FIG. 1. First input terminal Sel 1 and second input terminal Sel 2 of the clock chip 60 by connecting pins 1 to 3 of the fourth jumper 52 of the fourth terminal 50. Four numbers can be generated to generate the desired clock. The clocks thus produced are input as clocks entering the CPU 30, clocks entering the memory, and clocks entering the main chip, respectively.

As such, it is necessary to adjust the clock to be changed by using a jumper header pin on the motherboard of the personal computer. In this case, it is too difficult for users of the general personal computer, and the pin head physically occupies the space of the motherboard. There was a problem that the utilization space of the motherboard becomes more and more complicated, and its size becomes smaller. In addition, when a user of a personal computer wants to select and use a desired clock, there is a troublesome problem of finding a jumper on the motherboard and calculating a desired clock.

The present invention has been made to solve the above problems, by programming the value of the register in the chipset for the clock and multiplication of the CPU mounted on the motherboard in the personal computer by the desired clock and multiplication of the jumper header pin An object of the present invention is to provide a clock adjusting method and a device for a personal computer using software that frees up motherboard space by removing the same.

1 is a schematic connection diagram for multiplying a clock used in a CPU of a conventional personal computer;

2 is a schematic connection diagram for generating a basic clock from a clock chip of a conventional personal computer;

3 is a block diagram for generating and multiplying a basic clock in a CPU and a clock chip of a personal computer according to the present invention;

4 is a diagram showing information of a CPU clock of a read-only CMOS register according to the present invention;

5 is a control flowchart for changing the clock of a personal computer system using the software of the present invention.

Explanation of symbols on the main parts of the drawings

10, 20, 40, 50: terminal 12, 22, 42, 52: jumper

30, 100: clock chip 60, 300: CPU

200: Super I / O Chip

In order to achieve the above object, the present invention provides a method for setting a hardware clock default value, a general purpose I / O pin (GPI / O) pin as an output port, and CMOS (Complementary) which is clock information of a set system. Reading the Metal Oxide Semi-Conductor's register, checking and determining the CMOS and power status, setting the GPI / O register when CMOS is normal, and outputting the desired system clock, and normal BIOS ( Basic Input Output System) How to adjust the clock of your personal computer using software, which consists of proceeding the post, setting up the clock of the CMOS after the CPU change, and setting the BIOS default value when the CMOS error occurs. present.

In addition, another aspect of the present invention, in the personal computer, a super I / O chip for programming and outputting a register value embedded through a plurality of GPI / O, and through the GPI / O pin of the super I / O chip A clock chip that receives the output value through a plurality of input terminals and outputs a corresponding main clock signal, and a CPU driven by receiving a value output through the GPI / O pins of the super I / O chip through a plurality of input terminals. It can be achieved by providing a clock adjusting device of a personal computer using the included software.

Hereinafter, a clock adjusting apparatus of a personal computer using software according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram for generating and multiplying a basic clock in a CPU and a clock chip of a personal computer according to the present invention.

The super I / O chip 200 controls input and output used in a computer, and there are a plurality of pins configured in the super I / O chip 200, GPI / O (input / output pins that can be used for general purposes), which is a chipset. By programming a value into a register inside, it sends out a signal of the desired value through the GPI / O pin.

The clock chip 100 outputs a main clock for use in a device such as a ROM, a RAM, or an I / O used in a computer, and includes a first GPI / O pin and a second GPI / of the super I / O chip 200. The O pin is connected to the first input terminal Sel 1 and the second input terminal Sel 2 of the clock chip 100 to receive a clock output from the super I / O chip 200 to change the corresponding clock frequency. Output to peripheral device.

The CPU 300 is a central processing unit of a computer, and is driven with a clock suitable for an operating system of the CPU 300. The CPU 300 includes a third GPI / O pin and a fourth GPI / O of the super I / O chip 200. The pin is connected to the third input terminal Sel 3 and the fourth input terminal Sel 4 of the CPU 300 to receive a clock output from the super I / O chip 200 to be driven at a corresponding clock frequency. .

Referring to the operation of the present invention configured as described above in detail, in a control flow diagram of changing the clock of the personal computer system using the software of FIG. 5, step S400 sets a hardware clock default value. This means that once the CPU 300 is reset, it has a predetermined reset address (e.g., F000: FFF0h) of the CPU 300, and then proceeds to Post in the normal BIOS progression. do. Therefore, when the hardware value is first inputted, the basic value is inputted so that the next step can be taken. In this case, the four signal lines in the figure connecting the clock chip 100 and the input terminals Sel 1-Sel 4 of the CPU 300 to the GPI / O pins of the super I / O chip 200 of FIG. 3, respectively. If a pull-up or pull-down resistor is attached to the device, the basic signal is inputted to the clock chip 100 and the CPU 300 when the power is first turned on, so that it operates with the basic clock. .

In step S401, the GPI / O pins of the super I / O chip 200 are set to be used as outputs. When the GPI / O pin is set in this manner, the CMOS register which is the clock information of the CPU 300 is read in step S402. For example, in the diagram showing the CPU clock information of the read-only CMOS register in Fig. 4, the values '0' to '4' corresponding to the CMOS are set as initial values and the values are read. In other words, the CPU 300 is ready for operation according to the value set in the CMOS. That is, when the CMOS value is inputted as '0', '0' is outputted through the first to fourth GPI / O pins to the fourth GPI / O pin, and the clock of the CPU 300 becomes 75 MHz, and the CMOS value is set to '1'. When input, '0-0-0-1' is output through the first to fourth GPI / O pins to the fourth GPI / O pin, and the clock of the CPU 300 becomes 100 MHz. When the CMOS value is input to '2', '0-0-1-0' are output through the first to fourth GPI / O pins to the fourth GPI / O pin, and the clock of the CPU 300 becomes 120 MHz, and when the CMOS value is input to '3', the first GPI / '0-0-1-1' are output through the O pins to the 4GPI / O pins, respectively, and the clock of the CPU 300 becomes 133 MHz. When the CMOS value is input to '4', the first GPI / O pins to '0-1-0-0' is output through the fourth GPI / O pins so that the clock of the CPU 300 has a larger clock than when the clock is input to the '3'.

In step S403, the normality and power state of the CMOS are checked and judged. If the CMOS is broken by checking the checksum and power failure of the CMOS, the default value is set to perform the next step. do.

Step S405 outputs a desired system clock by setting a register of the GPI / O pin when the CMOS is normal. When the CMOS does not have any abnormality, the table value of FIG. 4 is set on the GPI / O pin to respectively set the GPI / O pin. Make sure that the desired output comes from the O pin. The value obtained here enters the CPU 300 and the clock chip 100 to output a desired system clock.

Further, in step S406, a general BIOS post currently in progress is performed, and in step S4072, if the clock is changed in the CMOS when the CPU 300 is changed, the clock information of the CPU 300 in the CMOS is changed. Keep that value. When the power is turned on after the setup is changed and the CPU 300 is replaced, it is executed the first time and reads the changed CMOS information to output the clock of the changed CPU 300 so that it can operate by the clock generated by the CPU 300. do.

In step S404, if an error occurs in the CMOS in step S403, a default value for operating it is entered, and the process proceeds to step S406, where a general BIOS post is advanced.

As described above, since the clock adjustment method and apparatus of the personal computer using the software of the present invention physically use the pin head, it is possible to reduce the cost of adjusting the clock of the CPU and to take up the physical space on the motherboard. By eliminating it, you can take advantage of the extra space in your motherboard's design, making it easier to design. In addition, the user of the personal computer finds a jumper on the motherboard when selecting a clock that is currently being used, and calculates and uses a desired clock. However, the present invention reports only a message that appears directly on the monitor screen using a clock adjustment method using software. The advantage is that you can choose the clock you want.

Claims (3)

Setting hardware clock defaults, Configuring the GPI / O pin as an output port, Reading CMOS registers that are clock information of the set system; Checking and determining the CMOS and power status; Setting the GPI / O register to output the desired system clock when the CMOS is normal; Proceeding with the normal BIOS post, Setting up the clock of the CMOS after changing the CPU; A method of adjusting the clock of a personal computer using software, comprising setting BIOS default values when a CMOS error occurs. In a personal computer, A super I / O chip for programming and outputting a register value through a plurality of GPI / Os, A clock chip which receives a value output through a GPI / O pin of the super I / O chip as a plurality of input terminals and outputs a corresponding main clock signal; And a CPU driven by receiving a value output through a GPI / O pin of the super I / O chip through a plurality of input terminals. The clock adjusting device of a personal computer using software according to claim 1, wherein a pull-up or pull-down resistor is connected to each of the GPI / O pins to input basic signals to the clock chip and the CPU at power-on.