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What is a BIOS programmer?

BIOS programmer introduction:

Programmers are also called writers, writers, and code writers, which are instruments used to read, write, and program IC chips.
The bios programmer is an instrument specifically for reading, writing, programming/burning of bios chips. It can be seen from this that the bios programmer is a dedicated programmer.


Bios programmer issues:

Q: What is a BIOS programmer?
A: Parallel port multi-function BIOS programmer, which can read, write and program EPROM (27 series chips), EEPROM (28 series chips), FLASH ROM (29, 39, 49 series chips), single-chip computers, serial IC, etc. Low price and a good programmer. With it, you can easily upgrade and repair the BIOS. You do n’t have to worry about upgrading or fear of the abominable CIH virus.
Q: Who is the BIOS programmer suitable?
A: If you are a computer repairer, then having a multi-function BIOS programmer is your wisest choice. From then on, you can start a BIOS repair business to make your career icing on the cake. For ordinary computer lovers. If you Afraid to upgrade the BIOS or the BIOS is damaged, then, having a programmer can easily upgrade or repair the damaged chip quickly. If you are a supercomputer DIY, you must have experienced a BIOS upgrade failure, and quickly get a piece of programming Device, keep away from hot-plugging, there is no longer the trouble of hot plugging the chip.
Q: Our company is the only sizeable professional computer maintenance department in this city. I want to buy a multi-function programmer to write BIOS. Can it meet the needs?
A: For professional maintenance department, using multi-function programmer is not suitable. The main reason is that the chips supported by the multi-function programmer are not comprehensive, and it is impossible to help the BIOS chips on all motherboards. Once the motherboard sent by the customer for repair, there are chips that the programmer does not support, which will delay your time. Therefore, for sizeable professional maintenance departments, you’d better use a universal BIOS programmer, which supports more ICs, such as Elnec’s BeeProg2C programmer, BeeProg + programmer, and BeeProg2 programmer. More than 80,000 kinds of ICs supporting programming (currently increasing), can complete the programming, programming and maintenance work well.
Q: Can the multi-function BIOS programmer write BIOS files for AMI or PHOENIX?
A: No problem. The programmer and the BIOS update program are different. The refresh program must correspond to the upgrade file. The AMI is only valid for the AMI upgrade file. For the programmer, as long as the BIOS update file is available, it uses its own The method of writing data to the BIOS chip has nothing to do with the version, manufacturer, and data format of the BIOS upgrade file.
Q: My machine is broken. How to use the BIOS programmer on this machine?
A: Of course, you are not using the programmer on your damaged machine. Your machine has a black screen, how can you still use the programmer! Find a device, for example, go to your friend, install the programmer on his machine, and install the driver of the programmer to repair your damaged BIOS chip.
Q: Can I use the multi-function BIOS programmer to upgrade the BIOS directly?
A: Of course. You need to download your BIOS upgrade file, unplug the BIOS chip on your motherboard, find another machine, and write the upgrade file directly to the BIOS chip with a programmer. This method is not dangerous, and there is a problem with the written data, such as the wrong version or the motherboard model is not the same, you can restart the next one, it will not paralyze the motherboard like the BIOS upgrade.
Q: Does the programmer support 27Cxxx chips?
A: Of course, I do. Because the 27 series chip requires a VPP programming voltage, the program will automatically add this voltage and prompt to adjust the pull switch accordingly. For chips with smaller capacity, be careful not to insert them in the wrong position. See the programmer’s instruction manual for details.
Q: The BIOS chip on my motherboard is PLCC packaged, what should I do?
A: If it is a 32-pin packaged PLCC chip, there is no problem, because the same 32-pin chip, the circuit is the same, the chip’s working principle and pin definition are the same, the only difference is the package form. We can solve this problem with a DIP-PLCC conversion socket, which is already included in the programmer’s kit. The PLCC packaged chip can be easily removed from the device using the PLCC extraction clip and is also included in the programmer’s kit. As for DIP-type extractors, there are also available on the website.
Q: My motherboard is an Intel 845 chipset, and the BIOS chip model used is SST49LF002. Does the chip programmer support it?
A: The chip you mentioned has a working voltage of 3.3 V. The programmer supports it, but it needs an FWH / LPC conversion socket to convert the chip pins and working energy. This conversion socket is included in the programming — device in the kit. Also, using this converter can support FWH / LPC chips such as Intel N82802AB, SST49LF004, etc., please refer to the instruction manual of the programmer.
Q: When I program the chip, I get a “VPP range error” error message. How can I solve this?
A: There are several reasons for the “VPP range error” prompt. First, there may be too many programs open, and the programmer did not respond to the control signals sent by the program in time. In this case, close the extra programs, including the screen saver. Second, the pull switch on the programmer is not adjusted according to the program’s instructions. Carefully check the status of each DIP switch, and readjust Third, the programmed chip is damaged. VPP voltage chips are used for programming. In addition to 27 series chips, FWH / LPC chips, such as INTEL’s N82802AB chip, must also be used. In this case, the default value of this voltage is 12.5V. When programming, accidentally or inadvertently adjusting this voltage to 25V will break the chip. Therefore, during programming, the state of the jumper that is not prompted by the program must be maintained at the default position. If the above two reasons are ruled out, it means that the chip is damaged, and you can write after changing the IC.
Q: I want to write i28F002 on the programmer, but the chip cannot be inserted. What should I do?
A: It cannot plugin, because the programmer only supports 32-pin chips. For 40-pin ICs, because of its packaging, it cannot be written on the programmer, and of course, it cannot read. The solution to this problem is to use a 32-> 40 pin conversion socket.
Q: How to program SST29EE020 chip on multi-function programmer?
A: In the software of the programmer, the SST29EE020 chip cannot be found. Many people think that the programmer cannot write this chip. In fact, otherwise, because the data structure of the IC is divided into several columns, the same series of chips, adjust the parameters, You can write with other models.
For SST29EE020, we can choose the ASD AE29F2008 (256) chip in the Flash AT29C / 29EEXXX, and change the sector size of the IC from 256 to 128, and you can read and write the SST29EE020 chip correctly.
Note that 256 is the size of the sector in the chip, not the capacity of the IC.
Q: How to program W49F002UP chip on multi-function programmer?
A: Similarly, the W49F002UP chip cannot be found in the software of the programmer. Adjust the parameters. We can also use other types of chips to write.
For W49F002UP, we can choose the 29SF / 49SF020 chip in Flash 29/39 / 49Fxxx. Because this chip needs 12V programming voltage for programming, adjust the DIP switch according to the 29SF / 49SF020 chip, and then set the second DIP switch ON, you can read and write the W49F002UP chip correctly.
Q: The multi-function programmer does not support my chip type. What should I do?
A: The multi-function programmer can support most chips on the market, but some chips may not support it. In this case, you can find an IC of the same type and the same capacity to replace the original chip after programming. The principle of replacement is that no matter what kind of chip, as long as the size is the same, you can replace it! Such as W29C020 instead of SST 39SF020 is no problem; AT29C010 instead of M29F010 is no problem. For the maintainer, there should be some replacement chips on hand.
However, dominant European programmer manufacturers like Xeltek can support more types of ICs by continuously upgrading programmer software. The latest programming software can be downloaded from Puluo electronic website.
Q: “Error: Write Sector 0” is displayed when the multi-function programmer is working. Why?
A: There are two sectors write errors. Generally, there are two possibilities: First, the chip is not erased. After selecting the chip model, if the erase button appears on the toolbar of the program, it generally indicates that the IC needs to delete before the programmer, such as SST39SF020, N82802ASB and other chips. The second is that the IC has damage. For example, some 27 series chips have erased with a UV eraser, and the program check is standard, but they cannot write. Generally, the chip is damaged.
Q: When I use the multi-function programmer to program the 49LF002A chip, the progress is plodding. What is the reason?
A: This is normal. Chips such as 49LF002A are FWH / LPC chips. When reading and writing, the address line and data line are shared, so there is a conversion time. Therefore, speed is plodding during programming. Fortunately, you can write the chip while performing Other operations. The same is true for FWH chips such as N82802AB, haha.
Q: I have done my best, but the programmer doesn’t work!
A: First check if the programmer installs correctly. First of all, the hardware must be installed correctly, which I believe most people can do well. Second, when booting, in the BIOS settings, set the parallel port of the computer to ECP or ECP + EPP. When programming, you must first select the correct chip model. Then, according to the prompt given by the program, set the DIP pull switch, install the chip, and then load the file to be written. The primary sequence of chip operation is: first delete, then program.


For some SMD chips, you can directly use ISP programmer to read and write, eliminating the trouble of desoldering

  1. The attached special ISP interface uses a special chip for buffering, and supports 2.0V~5.5V target board (chip)
  2. ISP interface can set whether to supply power to the target board through the software, the power supply voltage is 3.3V or 5V (can be set)
  3. ISP power supply comes with over-current/short circuit protection function, and automatically detects the power supply of the target board to avoid power supply conflicts
  4. Can be used for online upgrade of the BIOS of the computer motherboard (application example: online upgrade of the MSI MS-7392 motherboard Bios,

Recommend a cost-effective BIOS programmer:



Contact: Bevan

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Email: orod@chip-programmer.com

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