Sapphire Radeon X1800 XT video BIOS for the 512MB PCI-E model, in a RAR archive. The value 6001400 in the name seems to mark the clock configuration of the ROM. A file like this is used to restore a card whose firmware was lost, altered or damaged, either from DOS with ATIFlash or by reprogramming the EEPROM directly. X1800 XT boards existed in 256MB and 512MB versions, so check memory capacity and board revision first and always dump the original contents before writing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →