ref: 2d644f5077fa9ec43009ea5ec072e6ade9a1f61b dir: /macros/pals.asm/
tilepal: MACRO ; vram bank, pals x = \1 << OAM_TILE_BANK rept (_NARG +- 1) / 2 dn (x | PAL_BG_\3), (x | PAL_BG_\2) shift shift endr endm