Firmware file named only ic780m-a, likely a BIOS image for a board of that model, in a 663 KB ZIP. Since the name gives no brand, revision or chip details, check the contents and confirm the target board before use. Such images are usually written to the SPI or older flash chip with a programmer when a desktop board will not POST because of a corrupted BIOS. Read and save the existing chip first, compare the image size with the chip capacity, and match the model printed on the PCB.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →