Fmtsysrom

fmtsysrom -v /dev/sysrom prom_image.bin

Compares current PROM content with a binary image.

If you wanted to create a unified fmtsysrom script for Linux-based embedded systems, here is a basic skeleton.

dd if=firmware.squashfs of=/dev/mtdblock2 bs=64k fmtsysrom

ubiformat /dev/mtd2

:: Format a drive as FAT32 (for UEFI ROM boot)
format D: /FS:FAT32 /Q
:: Write raw system image (using dd for Windows)
dd if=sysrom.bin of=\.\PhysicalDrive2
 fmtsysrom -v /dev/sysrom prom_image

; Format an Amiga ROM disk (if Zorro III flash board)
format DRIVE ROM0: NAME "SystemROM" FFS INT
; Write kickstart replacement
transrom >kick.rom
 Compares current PROM content with a binary image

In technical contexts, "ROM" stands for Read-Only Memory. This is the chip on a device's motherboard that stores the firmware (the permanent software that tells the hardware how to boot up).

If "fmtsysrom" refers to an action or command, it likely relates to:

fmtsysrom -w /dev/sysrom new_prom.bin