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?

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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