BIOS contains quite a lot of settings, to figure out which is not always easy, since reference Information For some functions, there is sometimes absent or pci latency tool windows 7 x64 download free not help clearly understand the principles of their work. Let's figure it out why you need this function and how to configure it correctly.
Before the expiration of this time the number of clocksall other devices that use the PCI bus will not be able to take advantage of it. By default, the value of this function is 32 or 64 clocks, and in most cases it can be painlessly increased. The minimum value is 32, while the step of the cycle used can be consistently increased by 32 clock 64, 96, and so onup to Increasing the Pci latency tool windows 7 x64 download free Latency Timer value helps to increase the efficient bandwidth of the tire of the same name, which in certain cases can lead to wrong work Some high-speed devices that transmit and receive large amounts of information.
For example, similar problems often occur at RAID controllers. Nevertheless, it is recommended to try to increase the value of this parameter, especially if some extension cards using a PCI connector are installed in the computer.
In this case, it is necessary to increase the value of the PCI Latency Timer in order to start loading the operating system, after which it is closely tracking the performance of the computer and pci latency tool windows 7 x64 download free software. If everything is functioning normally, then it is possible to consistently increase pci latency tool windows 7 x64 download free value of PCI Latency Timer to, approximately clocks and even higher, if there is a serious need.
On the other hand, when troubleshooting in the operation of PCI devices, it is necessary to reduce the value of the above parameter, up to 64 or even 32 clocks.
Such a need arises when the PCI bus uses many devices, some of which need priority access to this bus for unmistakable operation. Therefore, it should be remembered that by setting the PCI Latency Timer parameter to 32, such problems can be eliminated. But if you enable this option, several subsequent bytes will be read into the buffer, so the next PCI device query will be completed without memory access.
For sound cards and FireWire controllers, it is especially important. Read Around Write. Nevertheless, the memory record is necessary, but the tire does not allow both operations at the same time. Therefore, if you need to write at least one byte, any reading process will be interrupted. Thus, the recording operation is performed only when enough data is accumulated in the buffer. If the data did not have time to sign up yet, you can do without reading from memory at all, using the buffer as a cache.
Obviously, this option is better to include. True, there is information that it will not be a video card at the I chip. This option allows you to reduce delays when changing the memory processing modes - when the entry follows reading and vice versa.
Obviously, the load on memory increases, which can lead to instability and errors. Turn on and check. There is no need to cache BIOS, since the subprogramme available in its composition during applications is not used.
The same can be said about the options Video Bios Cacheable option - disconnect without thinking. When you work in Windows or any other graphic shell, the frame buffer is displayed on certain linear addresses far beyond the first megabytes. So - we turn off. DMA mode is not usedit records in ports. The data is entered into the bus controller and then to the device registers. If we turn on this option, the recording buffer is activated, which accumulates the data before the PCI device is ready.
And the processor should not wait for it - it can release the data and continue the execution of the program. I do not see any reason to turn off this option. It includes the data accumulation mode in which the record operation tire transaction is performed only when a whole package of 32 bits is assembled in the buffer. The effect is purely positive - the bandwidth of the bit tire is-uses at full capacity, without idle operations.
It determines what needs to be done if the buffer is already filled, and the device has not prepared and could not accept them. Enabled - Recording operation will be repeated, Disabled - An error and processor is generated more precisely, the program that executes the record in the port decides how to come further. In case of acceleration of the processor, the frequencies of all other tires, including PCI, also increase the frequency frequency of the FSB bus.
There is something up to reach and saves. If everything is fine with PCI - the frequency of 33 MHz and "glitches" is not observed, the option must be turned on. PCI Latency Timer. Using this option, you can set the number of clocks allocated to each PCI device for transaction exchange pci latency tool windows 7 x64 download free. The more the clocks, the higher the efficiency of the devices, since it is not necessary to re-request permission, capture and free the time, etc.
You can also seriously disrupt the operation of the system, so carefully come to this issue. Delayed Transaction. Exchange rate is also much lower. If the PCI device needs to exchange while the ISA device works, it simply will not receive such an opportunity and will wait for its turn.
However, the output is a pci latency tool windows 7 x64 download free transaction. With it, the data does not come to the bus, and accumulate in a bit buffer. When the tire is released, a transaction occurs. But not all ISA devices allow you to deceive yourself, pci latency tool windows 7 x64 download free in case of problems, the deferred transaction needs to be disconnected.
Passive Release. It is the same topic. The processor is able to not wait for the end of the transaction and start the data record. If problems arise with ISA devices, you need to turn off this option.
PCI 2. In essence, it is the inclusion of two previous options, since any device that satisfies the PCI 2. The correctness of the settings made can be checked by loading in turns all PCI devices. Particular attention should be paid in the event that the frequency of the PCI bus due to overclocking turned out to be higher than the nominal. Next time let's talk about another tire - AGP.
Initial Display This option, which is most often located in the "Peripheral Setup" section, does not affect anything at all if you have only one video card. If there are two of them, the BIOS provides the opportunity to choose from them to be the first primary. Filled the memory blocks aperture will be only in the case of using large textures.
However, if you choose too small value, the AGP DIME mode, and sometimes DMA, will be completely disabled, which can help solve the problem with the pci latency tool windows 7 x64 download free of the video card and the motherboard.
What is the value better to install? Usually advised to take half of the system memory as the basis. In fact, in all cases it is necessary to set either 64 or MB. It allows you to turn on the control mode of the signal power supplied to the AGP slot.
The need for this occurs in the case when the graphic controller consumes too much energy. If the motherboard is not capable of providing necessary parameters The failures and hangs when working 3D games will begin. In fact, this is a timer that restricts the PCI-bus time-tire time to the tires. After the specified time, the tire arbiter is forcibly selecting the bus from the master, transmitting it to another device. The permissible pci latency tool windows 7 x64 download free of changes in this parameter is from 16 to with a step, multiple 8.
True, in some cases the "Auto Configured" value default is added, which greatly facilitates doubts and toriuses. The parameter value must be changed carefully, as it depends on the specific implementation of the motherboard, and only if at least two PCI cards that support the "Busmaster" mode are installed in pci latency tool windows 7 x64 download free system, for example, SCSI - and network cards.
Graphics cards do not support Busmaster mode. The smaller the value installed, the faster the other PCI card that requires access will receive access to the bus. If you want to highlight for work, for example, SCSI cards more time, then you can increase the value for the PCI slot in which it is located. A value for a network card, for example, it is necessary to reduce or set to 0, although in some cases installation 0 is not recommended.
In general, which parameter value is suitable and optimally for this system, depends on the PCI-cards used and pci latency tool windows 7 x64 download free checked by test programs. It is also necessary to consider to what extent "card-competitors" are sensitive to possible delays. And one more very important remark. At one time, this option and similar to it was introduced taking into account the joint existence of PCI - and ISA-tires.
The ISA-tire allowed the use of one "Master". It was rarely used as before and now. Considering the differences in pci latency tool windows 7 x64 download free speed of tires, and even more so in their bandwidth, it was necessary to solve the problem of the collaboration of "Master" -Esters on the PCI bus and standard devices on a slower ISA-bus.
This was especially concerned about the sound and network cards For ISA-tires, having a slight buffer memory, i. Sensitive to any delays in data transmission. The "66" value was set by default, although a smaller value of the PCI-device bus is more preferable. More than the latest "Ami Pci latency tool windows 7 x64 download free versions were less democratic: 32, 64, 96,pci latency tool windows 7 x64 download free, and "Disabled". True, this is not the entire possible list. If in the last option to install "YES" it and defaultthen the first function will be ignored.
A little higher has already seen the possibility of setting parameters for individual slots. This is how it realizes such an opportunity. Naturally, a separate configuration submenu is displayed to work with these parameters. For N-th slot, the user can select the default setting "YES"then the value in the lower field will be displayed in a riche form. At the same time, the user's access to the "Latency Timer:" field will be blocked. If you set "no" in the "Default Latency Timer:" option, it will be possible to manually set the value from the row: H
