Advice Wanted

In Tile Editor max offset is 2FE00 (last row of 16 tiles) but in Hexpose I can obtain 2FFFFF offset, why so?

Normally a tile editor will display the whole ROM, meaning a 2FFFFF offset or 3001FF offset if the SNES ROM has a header. I don't know which editor you are using. I suggest you try YY-CHR.

Can it be, that some tiles may be disrupted even if I see a lot tiles which look normal? By the way, I didn't find graphic that displays text, well I found some letters, but there is no complete alphabet. And I couldn't find dialogue font, is it compressed?

For the first question, read my answer about the ''Byte forward button'' in the previous post. As for the small and big font graphics in FF3us, they are stored here in 2bpp format:

Code:

0481C0    0491BF    FONT    No    "Small Font Graphics Data (8x8x2, 16 bytes each)"
0492C0    04A6BF    FONT    No    "Large Font Graphics Data (16x11x1, 22 bytes each, range 0x20-0x7F)

And how exactly stored graphic in that 32 bytes? For example, I changed 1 pixel in a left top corner of certain tile and I got two bytes changed: first 06->86 and 17th 00->80. I tried experiment with it but didn't get how it works...

here is the detailed 4bpp SNES format: http://smwc.hostzi.com/SMWiki/wiki/SNES_...ormat.html