RAR archive named for the Z84FM, 886 KB, with no revision, chip or content information in the file name. Its exact contents, whether diagrams, boardview data or a BIOS image, have to be checked after unpacking it with WinRAR or 7-Zip. Material like this is used to locate test points, check voltages around the power circuitry, or restore corrupted firmware with an SPI programmer. Read and save the original chip contents first, and match the board number on the PCB before you flash or rework anything.
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 @IT_SERVICE_WORLD. 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.