SFIX ROM
SFIX is the name of the 128kB ROM containing the default fix layer tileset embedded in cartridge systems.
It is used by the BIOS to display menus when no cartridges are inserted, or by games by switching it in with register REG_BRDFIX and REG_CRTFIX.
The dump is commonly named sfix.sfix.
SFIX dump with tile numbers, contents above tile $700 may vary between boards: