It is nice if you mention what system it is (Sega Saturn in this case), if for no other reason than some systems have fonts built into the BIOS/firmware/some other system level affair and other things have shortcuts that might work for that system. I don't think the Saturn had much here by way of hardware pulled stuff but it is not my main system so I could be wrong (it tending to be very old consoles and early CD consoles that saw this).
What did you try to locate the font?
If leaping immediately to compression I am likely to assume you tried looking at file names and then opening the ROM/ISO up and pressing page down a lot in a tile editor of some form (not sure what we have for the Saturn these days but tileggd and such should still be able to make a version happen).
Such things can work but are far from the whole story, and also tricky for a whole bunch of reasons (custom font size, individual custom character size, various colour depths for characters....).
Yeah mb for not mentioning the platform and thanks for the reply. It is Albert Odyssey for the SNES/Super Famicom. For locating the font I tried the normal method with tile editors on different formats and also tried the same formats with interleaving in Tile Molester. That was what made me think it is compressed, since the guides I read said it probably was the case. Also I didn't found any tool for it on utilities.
After this then yeah time to start looking at assembly -- it will eventually land in video RAM so you get to follow it back up the chain. This is for the GBA and for a command line driven emulator but still the sort of workflow that people will use https://www.romhacking.net/documents/361/ . Afraid I have no clue what debuggers are like for the saturn right now.
I guess this may be the case... Thanks for the GBA link. Is there any good debugger and assembly guides for SNES/Super Famicom? Or at least something that can put me on the right track. Thanks in advance.