BIOS Updates forum

I have heard of some EEPROM's requiring you to set the jumper to disable write protection (flash enable). Maybe this is the case with the ones you experimented. This should be documented in its datasheet, though.

You said that your floppy was OK before your BIOS failed. 1. Did you flash your BIOS before this failure come about? 2. Did you use /wb switch in that flash? Case A) If you answer NO to #1, your BootBlock is still intact and if your board is not more than 10 years old your BootBlock is still in good...

It's mapped in that area of memory for Award bioses, as far as I know.

I can locate my complete BIOS ID String from offset EC71h to offset EC8Fh of the BIOS Dump from memory.

If you can still boot from this board, press PAUSE (or CTRL+BREAK) while it's booting up and you should see the complete BIOS ID string at the bottom of your screen.

If not, open the bios binary in Modbin and it's listed under BIOS Message.

The flash utilities do some mapping of the bios so that each module (bootblock, decompression block, main bios file, etc.) are written to their corresponding blocks in the flash rom, or else the CPU could not read the bootblock at boot time if it's not in its proper location (usually at the far end ...

As far as I know, the BIOS ROM Checksum Calculation (you call it crc) is done by the decompression block which is separate from bootblock. But flashing bootblock usually also updates the decompresion block (if you use /wb switch in award flash utility), because these 2 blocks have to be compatible (...

You could try it and see if it works. But in my preliminary analysis of various bootblocks for the same motherboard, I noticed that there are significant differences in code content. Which means that every bootblock is fine-tuned to be compatible with the included decompression block, original.bin, ...

If your bootblock has been overwritten (as you wrote), it might have become corrupted and that's why your boards refused to wake up.

If /wb switch is not used in all previous flashes, then bootblock is still intact and recovery is possible. RAM is mandatory in bootblock recovery. Video is not needed if your floppy diskette contains the autoexec.bat file for automatic flashing. AFAIK, shorting 2 high address pins doesn't work on a...

Allow me to keep this post alive, as I believe that there are a lot of end users out there (aside from me) waiting for the appropriate solution. Regarding my last post, I've figured out how to set any bit in the chipset register. But this is not the long-term solution because this is not hard-coded ...

Seems your P4PE-X TE does not support 2.8GHz. Your Prescot worked fine with your P4B533-X because it supports up to 3.06GHz.

Another possibility is that the newest release of your P4PE-X TE bios still doesn't have the cpu microcode update for your Prescot.

My mainboard was manufactured in 2001 yet, but the bios bootblock supports PCI VGA (Award BIOS v6PG). Makes me think that award version 6 bioses support pci vga, but only when bootblock is executed. But my frustration is that the programmers of this bios version did not include a feature for disabli...

I've came across this stuff in my chipset datasheet on how to disable AGP: 1. Setting bit 8 in register C8h enables AGP. 2. Clearing bit 8 in register C8h disables AGP. 3. Setting bit 9 enables SBA. 4. Changing bit 2:0 sets the data transfer rate. And Modbin6 reveals register address C8h with a bit ...

How did you know that your backup bios file is corrupt?

Is your bios AWARD OR AMI? Please supply us with more details.