What is the BIOS for the video card

Source: Internet
Author: User

What is the bios of the video card, the graphics card bios is actually the "basic input and output system" of the display card. Hardware control procedures and related information for the display card are stored in the BIOS. It can be said that the BIOS is the "nerve center" of the display card.




The
display card is the most typical Plug and Play device as long as it is properly plugged into the motherboard to start working. System-driven first appears on the monitor is the display card BIOS information prompts, only the display card is working properly the monitor may display other content. The data in the BIOS of the display card after boot is mapped into memory and controls the work of the whole card. In DOS the display card is not required by any driver, Windows





boot also relies on the support of the display card BIOS.





also has a graphics card bios called Tsrbios. TSR is the abbreviation of terminateandstayresident, namely "Memory resident program". Many display cards use its features to make special TSR
.




BIOS. This display card BIOS does not need to really modify the original hardware BIOS, but instead runs a TSR program after the system starts to host the new BIOS in memory to replace the original BIOS. Using this procedure is very simple, just add a command to the Autoexec.bat. When you do not need to remove this command and restart immediately restore. This TSR




Another benefit of the
BIOS is that it is possible to upgrade an unmodified EPROM video card, which is not compatible with WindowsNT and future windo-ws2000, which can be said to be Windows




The special product of
9X.





Why do you want to upgrade?




A major feature of the
BIOS is that it can be refreshed in a specific way, which is often referred to as the BIOS upgrade. In fact, if the display card design is perfect, the BIOS does not need to upgrade. But is there any technical perfection to say? If there are any minor problems with hardware design, the simplest and most effective solution is to change the basic input and output system of the display card to bypass the faulty functionality and compensate with other methods. Upgrading the BIOS at this point can resolve hardware errors and greatly improve stability and compatibility.





The driver is the key factor in displaying card performance in Windows, and the BIOS provides the appropriate hardware information. If you use everything correctly and don't get a newer version of the display driver, there's no need to upgrade the BIOS. If the driver is still old, the new BIOS will not be helpful. However, many display cards when the new driver will be used to specify the use of the new BIOS, at this time do not upgrade the BIOS can only be looking at the new driver sigh.





here to be particularly reminded that many display cards do not start properly under WindowsNT4.0 and Windows2000. Both operating systems are NT's system cores, with 32-bit GDI rather than





Windows98 16-bit, so the way the display card works is very different. Failure to boot properly is the result of a conflict between the bios of the display card and the graphics core of NT. Windows





NT4.0 may not matter, but if you can't upgrade to Windows2000 then all the new software will be out of the future. This can be said to show the card on the ubiquitous 2000-year operating system problems, it must not be underestimated. The only way to solve this problem is to upgrade the BIOS of the display card. It is best to test your own card to see if it can support Windows2000, as long as the installation can be started on the line, there is no driver is another thing.




Can
upgrade?




The BIOS for the
display card is stored in read-only memory (ROM), and the BIOS of the display card may not be upgraded because the selected ROM is different and not all ROM can be erased by software. If the display card is using a one-time





PROM (Programmable read-only memory) it's impossible to change anything. If you are using EPROM (erasable programmable read-only memory) that's also very troublesome, although the name is "erasable" but this memory must be erased on a dedicated device to complete. The BIOS for this display card must be returned to the factory if it is to be upgraded, which is meaningless for ordinary users. The display cards that use the BIOS for prom and EPROM are listed as a display card for software-refreshed BIOS, which is used in a large number of inexpensive display cards because it lowers the cost of production (in fact, the difference is less than 10 yuan). If your display card uses this kind of bios, you can only think of yourself as unlucky.





The BIOS that really can be refreshed with software is called flasheprom (Flash) or EEPROM (erasable programmable read-only memory). This memory can be easily erased and requires only a dedicated software. If you do it right, you can do all the work in a few seconds. More formal display cards use this ROM to store the BIOS, but also provide a dedicated software to refresh the display card BIOS to facilitate the user's upgrade. When selecting a display card, you should be aware that this display card uses a software-refreshed ROM storage bios.





Upgrade Instance





below take "Geng Yu Rivatnt" as an example to explain the detailed steps of the display card BIOS upgrade. This display card uses 16MBSDRAM and is the standard design for the public edition. The standard BIOS for NVIDIA design is version 2.04.18 and the filename is "Tnt18sd.rom". The BIOS refresh software is Nv4flas.exe





version 1.2.





First in DOS type Nv4flash carriage return, get the following tips:





nv4flashromprogrammingutility.v1.2





Themonitorattachedtothenv4mayflicker





astheprompinsareenabledanddisabled!





Exampleofuse:nv4flashfull. ROM





Nv4flashfull. Romreadandprogramsflashromtofull.rom





Nv4flashesoftwareerase





Nv4flashddumprom





Nv4flashccheckforsupportedeeprom





Nv4flashwwriteprotect





Nv4flashrresetwriteprotect





Nv4flash? Displayoptions


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