CN1081364C - Personal computer with automatic set-up CPU parameter valve - Google Patents

Abstract

The present invention relates to a personal computer for automatically setting a CPU parameter value, which comprises a system composed of a BIOS program module and a logic circuit. The system can directly reset a predetermined parameter of a main board of a computer. The present invention avoids the trouble of using a jumper and a switch, and the BIOS can automatically set voltage, frequency, frequency multiplication number, etc. relevant to the logic circuit aiming at different CPUs; at the time of upgrading a computer, users only need to replace an old CPU with a new CPU; at next power-on, the computer can enter BIOS setting and change the content of a CPU parameter as long as a hot key is pressed.

Description

The personal computer of CPU parameter value is set automatically

The invention belongs to personal computer, the personal computer of the CPU parameter on the computing machine particularly can be set automatically.

Since U.S. Intel Corp. releases 386DXCPU, each serial CPU (486, pentium, pentium pro) comprises different parameters: manufacturer (INTEL, AMD, CYRIX), operating voltage (2.5V, 3V, 5V), basic frequency (50MHz, 60MHz, 66MHz, 75MHz), frequency (1.5 times, 2 times 2.5 times, 3 times).When same computer motherboard is selected to use dissimilar CPU, must be with the desired parameter of next corresponding each the different CPU of opening or closing of wire jumper or switch on mainboard, the change of different CPU type, most cases will be used 5 or above switch combination.The position of these wire jumpers is difficult to find on mainboard.And open the content setting of casing, see Fig. 1 and Fig. 6 according to instructions.United States Patent (USP) 4957346,5371892, European patent 0510241 and BrP 2271446 have all proposed various solutions, but the neither one patent has solved when changing dissimilar CPU, does not need to reach the configuration that mainboard is set automatically with the position of wire jumper or change switch.

When the objective of the invention is personal computer and changing dissimilar CPU, need not through wire jumper or change the position of the switch to come setup parameter.

Principal feature of the present invention is that personal computer comprises Basic Input or Output System (BIOS) (BIOS) program module and CPU parameter control logic circuit, described logical circuit and bios program module have constituted a system, and this system can directly reset the preset parameter of computer motherboard.

The present invention has avoided the trouble with wire jumper and switch, and at different CPU, BIOS can be provided with the voltage, frequency, frequency of the relevant logical circuit of CPU etc. automatically.During the customer upgrade computer, only need old CPU is replaced by new CPU, next time is when starting shooting, as long as click " hot key " (may be defined as any key), after hot key is pressed, computer can enter the BIOS setting and show modifiable CPU content of parameter, if there is not hot key to press, system will keep original parameter.

Description of drawings:

Fig. 1 prior art mainboard electrical schematic diagram.

Fig. 2 electrical schematic diagram of the present invention.

Among Fig. 3 the present invention operating voltage, clock frequency, the control logic circuit figure of clock frequency frequency be set.

CPU among Fig. 4 the present invention, operating voltage generator, clock frequency generator control logic circuit figure.

Among Fig. 5 the present invention operating voltage, clock frequency, the BIOS steering logic figure of clock frequency frequency be set.

The CPU that Fig. 6 prior art mainboard is controlled with wire jumper/switch, operating voltage generator, clock frequency generator control logic circuit figure.

Below in conjunction with accompanying drawing in detail the present invention is described in detail.

Existing computer system is provided with the CPU operating voltage, clock frequency, and the clock frequency frequency is to realize by wire jumper on the computer main board or switch.Fig. 1 and Fig. 6 illustrate the scheme that realizes this circuit.Processor 400 has input service voltage from 402, and (BF-1, BF-2), clock frequency is from 408 from 406 for the clock frequency frequency.Operating voltage is provided by CPU voltage generator 401, and 401 output voltages are by 404 3 input VCC2A, VCC2B, VCC2C decision.Frequency of operation is provided by cpu frequency generator 408, and 408 output frequencies are by 407 3 input SEL1, SEL2, SEL3 decision.CPU frequency of operation frequency selects 406, and output voltage selects 404, and it is logic low with wire jumper that output frequency is selected 407 input pin with connecting, meets VCC logic high is provided by hanging high resistance 405 when wire jumper is opened.The signal of these input pins just is provided by the selection combination that provides shown in the table 1.

Cpu clock is selected frequency meter

	F01	F02	F03	F04	F05	F06	F07
								SEL1	0	1	0	1	0	1	0
SEL2	0	0	1	1	0	0	1
								SEL3	0	0	0	0	1	1	1

CPU voltage option table

	V1	V2	V3	V4	V5	V6	V7
								VCC2A	0	1	0	1	0	1	0
VCC2B	0	0	1	1	0	0	1
								VCC3	0	0	0	0	1	1	1

Cpu clock frequency frequency multiplication option table

	X1.5	X2	X2.5	X3
					BF1	1	0	0	1
BF2	1	1	0	0

" table 1 " gone up tabular and gone out different CPU voltage, clock frequency, the options of clock frequency frequency.Frequency may be from 33MHZ to 75MHZ (F01-F07) frequency setting F01=33MHZ, F07=75MHZ, F02 increases progressively frequency to F06 is corresponding between it.The selection of operating voltage is V01=2.8V too, V2=3.3V etc., and these are an example, and the actual value of different these numerical value of computer is also different.

Know that by Fig. 2 the present invention adopts same setting, but added CPU parameter control logic circuit on mainboard, this logical circuit and bios program module have constituted a system, and this system can directly change the preset parameter of computer motherboard.CPU parameter control logic circuit is controlled the CPU voltage generator respectively, cpu frequency is sent out device and CPU, and has added CPU parameter setting and control module in BIOS.When adorning CPU like this, do not need wire jumper, BIOS is provided with the good cpu type of software setting in the time of only need powering on, and BIOS just can control CPU parameter steering logic and generate corresponding C PU parameter JV0, JV1, JV2, S0, S1, S2, BF0, BF1 etc.The circuit diagram of Fig. 4 comprises 200, one cpu clock frequencies 203 of relevant microprocessor and voltage generator 201, and circuit of the present invention no longer needs to hang high resistance 405, wire jumper or switch.SEL1 among Fig. 2, SEL2, SEL3 is replaced by 116-118.BF1, BF2 replaces VCC2A by 114-115, VCC2B, VCC2C is replaced by 111-113.Power by 202 with the same CPU voltage generator of circuit before the invention, cpu clock frequency provides by 204.It is that logical circuit 100 by Fig. 3 provides that logical circuits are selected in the various inputs control of Fig. 4.Data latching line 101 has connected 11 data lines 106 are provided CPU 200 by BIOS relevant parameter control information.Demoder 102 latchs 101 by the correct address trigger data that address wire 107 provides.Line 108-109 replaces WR and RD and obtains data line information for CPU 200 and BIOS offer demoder 102 through data latching line 101.Demoder 102 provides logic low to trigger triple gate 105 to the control mouth of triple gate.105 online 110 notice CPU when triggering have BATA IN signal to make CPU obtain the state that new parameter and test are reset.Two additional triple gate 103-104 of online 114-115 replace BF1 and BF2 to control frequency parameter and work in 105 same modes.Triple gate 103-105 is necessary, and several other equipment also have data input BF1-BF2, and these controls guarantee that two equipment can not drive same signal wire simultaneously.Fig. 5 describes bios software and how by above-mentioned steering logic the relevant CPU parameter of mainboard to be set.Any resetting (start, system reset, cpu reset) will make system bios begin to enter module 301 initialization systems (according to reset types) from module 300 to begin to handle reset signal (as clear internal memory, starting hard disk motor etc.).From initialization module 301 to 302, whether judge reset signal from start by 302, if reset signal might be changed CPU from start.System handles 303 modules when being judged as YES.303 modules judge whether to press " hot key ", change behind the different CPU operator and must press " hot key " and enter BIOS software is set.System is by module 303 to 304 in this case.The screen order that module 304 enters BIOS Setup is presented on the computer monitor.The system that the BIOS content displayed is former and the difference of system of the present invention are that system of the present invention displaying contents has increased cpu clock frequency, the module that clock frequency frequency and voltage are selected.Select to enter after the module that module 305 obtains setting CPU that related parameter (these parameters are imprinted on the surface of CPU usually by the CPU fabricator) arranged.Enter module 306 and can change these parameters of CPU, CPU utilizes CMOSRAM and previously describedly latchs 101 and preserve these parameters.These parameters are once preservation, and system begins to reset and return module 300 with the SPEEDEASY of the present invention mould 307 that resets.Nothing " hot key " is pressed if start resets, and system handles module 303 changes module 308 over to, and the parameter of definition changed module 309 over to and returns module 300 by the standard reset parameter before system utilized among the CMOS.Module 310 is not gone into from module 302 by (system reset, the cpu reset) system that resets if reset signal is not start, and module 310 enters BIOS by the original system standard (pressing the BEL key usually when starting) is set.Enter BIOS and system is set forwards 311 to from module 310, BIOS is provided with previously described module 305 the same to 307 in the module 312 to 314 afterwards.No matter BIOS enters module 304 still is 311 in mandatory declaration, and not only the CPU parameter can change but also the traditional parameters of all computers can change (internal memory, input and output etc.).Be provided with if enter BIOS, system handles module 310 to 315, processor reset enters module 316 and finishes start-up course and enter disc operating system (DOS) DOS after (being different from cpu reset).

As mentioned above, there do not have composition of the present invention to add fashionable system handles process in the visible start process to be as follows: by module 300 to module 301 to module 302 to module 303 to module 308 to module 309 to module 300 to module 301 to module 302 to module 310 to module 315 to module 316.Non-start reset (by the reset key of computer or press simultaneously that not have composition of the present invention to add fashionable system handles process in the cpu reset process of CTRL+ALT+DEL key as follows: by module 300 to module 301 to module 302 to module 310 to module 315 to module 316.Foregoing invention can not be used for common existing mainboard, but can be used to contain Fig. 3, the mainboard of 4 described logical circuits, and required condition is to change the BIOS of program of the present invention.

The invention is not restricted to above description,, can make various distortion as long as without prejudice to thought of the present invention.

Claims (6)

1. the personal computer of CPU parameter value is set automatically, it is characterized in that computing machine comprises bios program module and CPU parameter control logic circuit, described logical circuit and bios program module have constituted a system, and this system can directly reset the preset parameter of computer motherboard.

2. by the described personal computer that the CPU parameter value is set automatically of claim 1, it is characterized in that said logical circuit is the CPU parameter steering logic on mainboard, this logical circuit is controlled CPU voltage generator, cpu frequency generator and CPU respectively, the said logical circuit of said bios program module controls.

3. by the described personal computer that the CPU parameter value is set automatically of claim 2, it is characterized in that said logical circuit is provided with CPU running frequency, CPU operating voltage and CPU frequency respectively automatically.

4. by claim 1 or the 2 described personal computers that the CPU parameter value is set automatically, it is characterized in that said logical circuit comprises data latches, code translator and one group of triple gate.

5. by claim 1 or the 2 described personal computers that the CPU parameter value is set automatically, when it is characterized in that said bios program module comprises the start location;

(1) judges that by initialization module 301 to 302 whether reset signal is from start;

(2) judge whether to have changed CPU by module 303;

(3) 304 modules enter BIOS and are provided with;

The CPU that (4) 305 modules obtain setting has related parameter;

(5) 306 modules can change the parameter of CPU;

(6) revising the back 307 modules execution that finishes resets.

6. the personal computer that is CPU parameter values by claim 1 or 2 described automatic settings, when it is characterized in that said bios program module also is included in non-start location:

(1) system enters module 310 from module 302 and changes module 311BIOS setting over to;

(2) 312 modules obtain the CPU parameter;

(3) 313 modules can change the CPU parameter;

(4) revising the back 314 modules execution that finishes resets.

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