Superskuj: Superskuj moved page Rom/Page 0x7F to RAM: Bank 0x7F

2016-12-20T22:33:15Z

Superskuj moved page Rom/Page 0x7F to RAM: Bank 0x7F

Tatters: Created page with "* {{$|7F0000}}[{{0x|7E0}}] = tile index buffer for text * {{$|7F0000}}[{{0x|850}}] = no idea * {{$|7F07E0[???}}] = ???? * {{$|7F1200}}[{{0x|800}}] = text buffer for character..."

2016-12-20T07:19:20Z

Created page with "* {{$|7F0000}}[{{0x|7E0}}] = tile index buffer for text * {{$|7F0000}}[{{0x|850}}] = no idea * {{$|7F07E0[???}}] = ???? * {{$|7F1200}}[{{0x|800}}] = text buffer for character..."

New page

* {{$|7F0000}}[{{0x|7E0}}] = tile index buffer for text
* {{$|7F0000}}[{{0x|850}}] = no idea
* {{$|7F07E0[???}}] = ????
* {{$|7F1200}}[{{0x|800}}] = text buffer for character data, using pointers loaded from the table at $7F71C0
* {{$|7F2000}}[{{0x|2000}}] = at some point carries the tile map data for the rain overlay.
* {{$|7F2000}}[{{0x|1000}}] = (Dungeons) BG2 tile attribute table - (after the level/room has loaded),
tile information for the room/map.
In particular tells the game how to handle each 8x8 tile. For example, a chest will have
the value 0x58 (or something similar) in 4 different locations, interlaced of course.
List of Tile types:
0x00 - normal?
0x01 - collide
0x02 - ???
0x03 - ???? what the hell is this?
0x08 - swim / deep water
0x09 - shallow water (not swimmable)
0x0A - ????
0x0B - ????
5960x0C - moving floor (Mothula's room)
0x0D - spike floor (hurts)
0x0E - ice floor
0x0F - more ice floor?
0x1C - top of water staircase
0x1D - in room staircase
0x1E - in room staircase
0x1F - in room staircase
0x20 - Pit / Hole tiles
0x21 - ????
0x22 - stairs that slow you down
0x23 - Lower half of trigger tile (Object 1.1.0x35 also uses it, but it seems like a broken mess)
0x24 - Upper half of trigger tile
0x26 - Boundary tile for In-floor inter-room staircases
0x27 - white statues (dungeons) / fences (overworld)
0x28 - Ledge leading up
0x29 - Ledge leading down
0x2A - Ledge leading left
0x2B - Ledge leading right
0x2C - Ledge leading up + left
0x2D - Ledge leading down + left
0x2E - Ledge leading up + right
0x2F - Ledge leading down + right
0x30 - Up Staircase to room 1 of 5
0x31 - Up Staircase to room 2 ( " )
0x32 - Up Staircase to room 3 ( " )
0x33 - Up Staircase to room 4 ( " )
0x34 - Down Staircase to room 1 of 5
0x35 - Down Staircase to room 2 ( " )
0x36 - Down Staircase to room 3 ( " )
0x37 - Down Staircase to room 4 ( " )
0x38 - Boundary tile for straight up inter-room staircases
0x39 - Boundary tile for sraightt up inter-room staircases
0x3A - ????
0x3B - star tiles that change up the floor
0x3D - inter-floor staircases?
0x3E - inter-floor staircases?
0x3F - inter-floor staircases?
5970x40 - Thick Grass (and smashed in moles?)
0x42 - Gravestone
0x44 - Spike Block (dungeon) / Cactus (overworld)
0x48 - (overworld) Normal blank ground
0x4A - ????
0x4B - Orange Warp Tile (Dungeons) / Blue Warp Tile (Overworld)
0x4E - Mountain rock tile found in only a few select areas
0x4F - Mountaon rock tile found in only a few select areas
0x50 - (overworld) bush
0x51 - (overworld) off color bush
0x52 - (overworld) small light rock
0x53 - (overworld) small heavy rock
0x54 - (overworld) sign
0x55 - (overworld) large light rock
0x56 - (overworld) large heavy rock
0x57 - (overworld) rock pile
0x58 - chest 0
0x59 - chest 1
0x5A - chest 2
0x5B - chest 3
0x5C - chest 4
0x5D - chest 5
0x5E - upward staircase tile
0x60 - ????
0x62 - bombable cracked floor
0x63 - minigame chests?
0x66 - blue / orange block that is down
0x67 - blue / orange block that is up
0x68 - conveyor belt
0x69 - conveyor belt
0x6A - conveyor belt
0x6B - conveyor belt
0x70 - pot or bush (or mole?)
0x71 - pot or bush
0x72 - pot or bush
0x73 - pot or bush
0x74 - pot or bush
0x75 - pot or bush
5980x76 - pot or bush
0x77 - pot or bush
0x78 - pot or bush
0x79 - pot or bush
0x7A - pot or bush
0x7B - pot or bush
0x7C - pot or bush
0x7D - pot or bush
0x7E - pot or bush
0x7F - pot or bush
0x80 - open door?
0x8E - send player to overworld? (well supported so far >_>)
0x90 - screen transition with BG toggle (BG0 <-> BG1)
0x91 - screen transition with BG toggle (BG0 <-> BG1)
0x92 - screen transition with BG toggle (BG0 <-> BG1)
0x93 - screen transition with BG toggle (BG0 <-> BG1)
0x94 - screen transition with BG toggle (BG0 <-> BG1)
0x95 - screen transition with BG toggle (BG0 <-> BG1)
0x96 - screen transition with BG toggle (BG0 <-> BG1)
0x97 - screen transition with BG toggle (BG0 <-> BG1)
0xA0 - screen transition with dungeon toggle
0xA1 - screen transition with dungeon toggle
0xA2 - screen transition with dungeon toggle
0xA3 - screen transition with dungeon toggle
0xA4 - screen transition with dungeon toggle
0xA5 - screen transition with dungeon toggle
0xB0 - Cane of Somaria line (up/down)
0xB1 - Cane of Somaria line (left/right)
0xB2 - ???
0xB6 - Cane of Somaria line node (question mark shaped)
0xC0 - Torch 0x00
0xC1 - Torch 0x01
0xC2 - Torch 0x02
0xC3 - Torch 0x03
0xC4 - Torch 0x04
0xC5 - Torch 0x05
0xC6 - Torch 0x06
0xC7 - Torch 0x07
0xC8 - Torch 0x08
0xC9 - Torch 0x09
0xCA - Torch 0x0A
0xCB - Torch 0x0B
0xCC - Torch 0x0C
0xCD - Torch 0x0D
0xCE - Torch 0x0E
0xCF - Torch 0x0F
5990x0D0 - ????
0xF0 - Key door 1
0xF1 - Key door 2
0xF2 - Key door 3
0xF3 - Key door 4
0xF4 - ????
* {{$|7F3000}}[{{0x|1000}}] = Tile Attribute table for BG1. Same as $7F2000 but for a different background.
* {{$|7F4000 - enemy related
* {{$|7F5000}}[{{0x|800}}] = free ram
* {{$|7F5800[?}}] = used?
* {{$|7F5B00}}[{{0x|A0] -
Array of sound settings for overworld areas.
The top 4 bits determine the ambient sound effect, which is written to $012D
The bottom 4 bits determine the song number to play when the area is loaded ($012C)
This array is preloaded with differing values depending on which stage of the game you're in.
The stages are determined by $7EF3C5 (See $3C5 in Zelda_SRM.log)
* {{$|7F5BA0}}[{{0x|60}}] = free ram
* {{$|7F6000}}[{{0x|1000}}] = enemy damage related
* {{$|7F7000}}[{{0x|1C0}}] = Used to generate the hdma table that the intro and outro spotlight effect uses
* {{$|7F71C0}}[{{0x|4A7}}] = text / dialogue pointers (all of them!). Each one is a 3 byte long pointer.
* {{$|7F7667}}[{{0x|6719}}] = free ram
* {{$|7FDD80}}[{{0x|200}}] = Serves as a temporary buffer for storing a copy of the current palette buffer.
Sometimes the contents of $7EC500 gets stored here, and other times it's $7EC300
being preserved. The general idea here is that the game hopes to eventually
(optionally) restore the palette to this set of colors later.
* {{$|7FDE00}}[{{0x|180?}}] = ???
* {{$|7FDF80}}[{{0x|280}}] = (indoors) I think this is used to describe which rooms have had their sprites loaded
(while in a dungeon)
* {{$|7FDF80}}[{{0x|1000}}] = (outdoors) Memory region that indicates where sprites are in the currently loaded overworld map
(which map16 tile they're on)
* {{$|7FEF80}}[{{0x|200}}] = death status for the overworld sprites?
* {{$|7FF180}}[{{0x|?] -
???
* {{$|7FE200 -
Special animation memory region:
600$7FF800}}[{{0x|1E}}] = type of special animation
0x01 - Fireball chain... fireballs? Is the whole thing made up of these?
0x02 - Mothula beam?
0x03 - Falling tile? Or the effect after the tile has falling of it disappearing?
0x04 - Something to do with eye lasers in the walls
0x05 - one sparkling point produced when you freeze an enemy and as while it's frozen periodically
0x06 - Black sperm looking things related...
0x07 - Something to do with Kholdstare, maybe the ice that falls from the ceiling?
0x08 - Fireball sprite from zora or evil face things. Maybe the trails of those instead?
0x09 - Something to do with Vitreous... maybe his lightning
0x0A - bush clippings scattering (also used for grass)
0x0B - Swimmer splashes?
0x0C - Trinexx related...
0x0D - Invalid, don't use this animation as it will certainly crash the game. (It's a null pointer)
0x0E - Trinexx related...
0x0F - Blind related...
0x10 - Something to do with Trinexx... perhaps fire or ice blasts.
Also related to Ganon's firebats that spawn fireballs.
I think it's pretty clear it's those fireballs
0x11 - Spawned from special animation 0x0F...
0x12 - Sprite falling into hole?
0x13 - The Ganon bat smashing into the pyramid of power
0x14 - Red hat man's dash puffs?
0x15 - Arghus splashes?
0x16 - pot shattering
* {{$|7FF81E}}[{{0x|1E}}] = special animation Y coord. low byte
* {{$|7FF83C}}[{{0x|1E}}] = special animation X coord. low byte
* {{$|7FF85A}}[{{0x|1E}}] = special animation Y coord. high byte
* {{$|7FF878}}[{{0x|1E}}] = special animation X coord. high byte
* {{$|7FF896}}[{{0x|1E}}] = special animation unknown 1
* {{$|7FF8B4}}[{{0x|1E}}] = special animation unknown 2
* {{$|7FF8D2}}[{{0x|1E}}] = special animation unknown 3
* {{$|7FF8F0}}[{{0x|1E}}] = special animation unknown 4
* {{$|7FF90E}}[{{0x|1E}}] = special animation countdown timer
* {{$|7FF92C}}[{{0x|1E}}] = special animation floor designator
* {{$|7FF94A}}[{{0x|1E}}] = special animation unknown 5
* {{$|7FF968}}[{{0x|1E}}] = special animation unknown 6
* {{$|7FF986}}[{{0x|1E}}] = special animation unknown 7
* {{$|7FF9A4}}[{{0x|1E}}] = special animation unknown 8
* {{$|7FF9C2}}[{{0x|10}}] = Sprite tile interaction value. Acquires its value from $0FA5.
* {{$|7FF9D2}}[{{0x|2C}}] = Free ram?
* {{$|7FF9FE}}[{{0x|1E}}] = special animation unknown B
Holdable objects
601$7FFA1C}}[{{0x|10}}] = Array that seems to handle the objects you hold above your head?
* {{$|7FFA2C}}[{{0x|10] -
* {{$|7FFA3C}}[{{0x|10] -
* {{$|7FFA4C}}[{{0x|10] -
* {{$|7FFA5C}}[{{0x|10] -
* {{$|7FFA6C}}[{{0x|10] -
* {{$|7FFA7C}}[{{0x|10] -
* {{$|7FFA8C}}[{{0x|10] -
* {{$|7FFA9C}}[{{0x|10] -
* {{$|7FFAAC}}[{{0x|10] -
* {{$|7FFABC}}[{{0x|10] -
* {{$|7FFACC}}[{{0x|10] -
* {{$|7FFADC}}[{{0x|10] -
* {{$|7FFAEC}}[{{0x|10}}] = free ram?
* {{$|7FFAFC}}[{{0x|10}}] = free ram?
* {{$|7FFB0C}}[{{0x|10}}] = free ram?
* {{$|7FFB1C}}[{{0x|10}}] = used, but unknown
* {{$|7FFBDC}}[{{0x|10}}] = used, but unknown
; most of these seem to be referenced for Helmasaur King's tail (maybe other bosses too)
* {{$|7FFC00[??}}] = unknown
* {{$|7FFC80[??}}] = unknown
* {{$|7FFC9C}}[{{0x|10?}}] = used, but unknown
* {{$|7FFD00[??}}] = unknown
* {{$|7FFD5C}}[{{0x|01}}] = apparently Ganon related
* {{$|7FFD68}}[{{0x|01}}] = apparently Ganon related
* {{$|7FFD80[??}}] = unknown
* {{$|7FFE00}}[{{0x|80}}] = statue sentry uses if for something
* {{$|7FFE80}}[{{0x|80}}] = statue sentry uses it for something
* {{$|7FFF00}}[{{0x|80}}] = statue sentry uses it for something
* {{$|7FFF80}}[{{0x|80}}] = free ram?
-------------End of variables------------------------
Routines:
* {{$|333
While this routine appears to be complicated and technical, it really serves two purposes.
602Depending upon the entry point to the routine, two 16 bit values will be written to VRAM. The value at $00 goes to
* {{$|0000-$1FFF and the one in $02 goes to $6000-$67FF. That's it. The values are written non-incrementally, so it's just
those two values getting written over and over again.
* {{$|07C0
Zeroes out the first $2000 bytes of WRAM.
Checks the checksums on your save files to see if they are valid. Erases them if not.
* {{$|00082E
* {{$|0888
Loads SPC with data at specified address
* {{$|0901
Sets up address for $8888
Address = $198000 => $0C8000
* {{$|093D
Initializes the Screen
* {{$|094A
Saves your game.
* {{$|07C0
Sets up address for $8888
Address = $1A9EF5 => $D1EF5
* {{$|12A1
Upon starting this routine, inspect the 8-bit value at the long address [$00], Y
If it is positive, that value is stored at $04, Y is incremented, and the next value is stored at $03. Y increments. If the next
value at [$00], Y is negative (AND 0x80 tells us this) then A will end up as 0x1, and 0x0 is the value was positive. This is
stored at $07. The very same value is read in but this time we AND with 0x40, STA $05, and LSR A three times. The AND
left a nonzero result, we will have A = 0x80, and if not, A = 0x00. Ultimately either are ORed with 0x01 so we have A =
0x81 or 0x01. The 0x01 tells us data will be being transferred in Mode 2 (a la register $4310). Data from the source is
written to $2118.
Summary: 1st Value read: XXXX XXXX (If negative, the SR exits) -> $04
2nd Value read: XXXX XXXX -> $03
3rd Value read: AXXX XXXX (A = 0:
* {{$|D81B
If NOPed, you will not be able to pick up some types of pots in dungeons.
* {{$|10054
The subroutine is used to verify that all the save files are uncorrupted. Each save file has one mirrored slot 0xF00 bytes
offset from the original. If the first file is corrupt and the mirror is fine, it will copy the mirror to the original and use it.
Basically it checks if the 0x500 bytes in the slot add up to 0x5A5A. When save files are saved a checksum is calculated to
make sure this constraint is met.
603$17EBB
I'm going to generalize this subroutine because the data extraction method is cumbersome to figure out at a moment's
glance. Sub $175F5 is used to get a sequence of codes, and after each code follows data to be put in memory at
* {{$|7F4000, Y. Update: After some serious thought, I've begun to think of this as a decompression routine, possibly for
OAM data.
The way the data is handled depends on the three most significant bits of the code. The number of bytes to write is
determined by the five least significant bits of the code plus one. Let this number be called R.
[XXX | XXXXX]
(Code), (R - 1)
Example:
[010 | 10001]
Code = 010
R = 10001 + 1 = 10010 = 18d (d for decimal)
Codes:
[000] : Write R bytes after the code. For instance, 03 11 12 13 14 would have you write 11, 12, 13, and 14 in succession
into memory.
[001] : Write the one byte after the code R times. 23 15 would make you write 15 four times into memory.
[100], [110], [101] : After the code is a 16-bit index. This means copy memory from $7F4000 + (the Index). You will copy
R bytes of course
[010] : This code is used for repeatedly storing a 16-bit number, rather than the [001] case. Over all R bytes will still be
written.
[011] : Whatever value is picked after the code will be incremented (R - 1) times and written R times. 34 01 for example
would write 01 02 03 04 05
* {{$|6FE77-$6FFC0 - Template for the status bar. That is, set of tile indices.
When the game begins these are mapped to $7EC700-$7EC849
* {{$|3E245 Controls Link's movement, i.e. his speeds and different movement events, such as swimming and dashing.

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RAM: Bank 0x7F - Revision history

Superskuj: Superskuj moved page Rom/Page 0x7F to RAM: Bank 0x7F

Tatters: Created page with "* {{$|7F0000}}[{{0x|7E0}}] = tile index buffer for text * {{$|7F0000}}[{{0x|850}}] = no idea * {{$|7F07E0[???}}] = ???? * {{$|7F1200}}[{{0x|800}}] = text buffer for character..."