How to read PRS / SKmapDat files?

I have these graphic files from Legend of Mana, that I would like to understand how works.

  size  file name
149968  TWR_I100.IMG
 35500  TWR_RA00.IMG
148736  WAL_TMPL.PR开发者_如何学JAVAS
214574  WAL_VLLG.PRS
 63762  WM_D351.PIM
  1208  WM_D352.DAT
 63446  WM_D352.PIM
  1208  WM_D353.DAT

The problem is figuring out how the pixels are stored.

The PRS files contains the string SKmapDat in the header.

I am pretty sure the DAT files are colour palettes.

Are there anyone in here, that have seen these type of files before and therefore knows how to read them?

Game consoles have limited library/runtime support. Most often the formats are chosen to perform well on their hardware or to optimize storage. Have a look at http://www.zophar.net/utilities/psxutil.html for some resources that might help you