H
heirbrande
Hi,
I'm a newbie but this is interesting!
I've found a neat utility called Uniflash that allows you to either
flash using your motherboard's BIOS socket or using a socket on a PCI
card, like the boot rom socket of an ethernet card.
Apparently, I can Uniflash can get the card to save what is already on
the cchip to a file ok. I can tell Uniflash to flash the image file
back into the EEPROM chip ok.
However, anytime I use a different .bin file as the source, Uniflash
shows a few red boxes within the progress bar instead of all green
boxes. Then it's says Flash verification failed or something to that
effect.
I tried widdling a bit on the original ROM contents' image file by
adding a character at random. It seems that wherever in the file I add
the character (using the UltraEdit HEX editor), the flashing fails.
I'm imagining that there must be some type of line-by-line checksum
going on , to make sure the characters make sense together on any
particular line?
This is only a guess since I'm failry new to this.
Any ideas of how I can get a known good image burned into this chip?
The chip is an Amd 29C020.
Thanks
I'm a newbie but this is interesting!
I've found a neat utility called Uniflash that allows you to either
flash using your motherboard's BIOS socket or using a socket on a PCI
card, like the boot rom socket of an ethernet card.
Apparently, I can Uniflash can get the card to save what is already on
the cchip to a file ok. I can tell Uniflash to flash the image file
back into the EEPROM chip ok.
However, anytime I use a different .bin file as the source, Uniflash
shows a few red boxes within the progress bar instead of all green
boxes. Then it's says Flash verification failed or something to that
effect.
I tried widdling a bit on the original ROM contents' image file by
adding a character at random. It seems that wherever in the file I add
the character (using the UltraEdit HEX editor), the flashing fails.
I'm imagining that there must be some type of line-by-line checksum
going on , to make sure the characters make sense together on any
particular line?
This is only a guess since I'm failry new to this.
Any ideas of how I can get a known good image burned into this chip?
The chip is an Amd 29C020.
Thanks