I asked this before and got no answer, but since I got more information I'm just gonna give it a try.
The problem is I get a glitch after inserting my region map.
Screenshot:
Dont worry about the colors, im gonna change them later. also i blurred the image cause the map is yet secret.
Why does this blue stuff appear? (The tile right of it is no longer gray, i fixed that. So just focus on the blue rectangle.)
It's exactly 6 Tiles that appear wrong (but it would be 8, it's just that the last two are transparent anyway so they're correct even if they're wrong...)
I looked my tilemap up in a hex editor and after messing around with the bytes a bit, I found that my tilemap ends with the following 8 bytes:
1C 01 00 1D 01 00 00 00
I already found out that 1C and 1D refer to tiles and 01 and 01 are palette numbers. But I do not know what the zeros are. After those bytes a lot of FFs follow.
When changing the tiles there, I see a change to the last two tiles that appear to be correct on my region map. Editing the last two zeros and/or even some of the following FFs has no visible effect to the region map ingame.
So I let the logger run and get the following (0x0871a23c is the offset of my region map)
LZ77UnCompWram: 0x0871a23c,0x02002d86 (VCOUNT=201)
Looked 0x02002d86 up in the vram and found all the bytes i also see in the hex editor, looks like my region map tilemap, changes there are not visible ingame, so I checked the Map viewer and found the ram address of the last correct tile: 0x0600F4E8
Looking that up in the ram shows me another copy of my tilemap. But now theres a difference: If I edit the next bytes, I am able to change the region map ingame. I changed the following zeros to:
1E 01 1F 01 20 01 21 01 22 01 DF 00
And look: I finally get the result i want! The region map looks alright.
But well, as you can guess nobody wants to change the ram everytime he looks on the region map, espacially when its a pretty unimportant area of it.
So, does anybody know why this is happening and what I can do to prevent it?
Additonal info: I tried making my tilemap with NTME Alpha AND NTME 1.1. Both gave me the same result.
If somebody who is able to insert region maps wants to give it a try, I could provide my tileset and tilemap. If that person manages to do it, that just means I'm doing something wrong.