This is a sub-page of Development:The Legend of Zelda: A Link to the Past.

Entrances

The file 日本_Ver3\asm\zel_isub0.asm, which is an earlier version of zel_isub.asm, has a section called "Initial RAM set [Ground]". This section contains various tables that pertain to a selection of interior maps that have exits to the overworld.

For the overworld image that is used for the entrances, an image of the screen in the final game that corresponds to the hex value is used; however, note that the screen may have looked different at this time in development in mid-1991. The indoor cave/house/room images are from the Super Donkey prototype since those are roughly around the same time, mid-1991, as this source data has been identified as belonging to.

Some of the entrance values are also rough and not to be taken as exact gospel. For example, they may have been placeholder values that would roughly indicate to the developers for 05 that "this cave entrance will be in east Death Mountain" or for 1E that "this entrance will be in the Eastern Palace region" without giving the exact screen hex value yet.

Entrances: 1991-05 (Early)#

DDPMSRM#

Immediately below the previous table is a section called "DDPMSRM" (Dungeon Display Main & Sub Rooms) that was commented out on 1991/05/10. Because some of the map IDs are different compared to those in the table above, it's evident that some interior rooms once were in different locations on the underworld map compared to where they can be found in the Super Donkey proto.

0104

Link's House
0040

Hyrule Castle (Unknown)
00F0

Cave to Death Mountain (Left)
00F3

Mayor's Office (Right)
00FB


00FF


004A

Eastern Palace 1F (Middle)

Entrances: 1991-05 (Later)#

DROOMDT#

The data under the DROOMDT label is a table of interior map square IDs that dates from around the time of the Super Donkey proto (the first half of June, 1991).

0104

Link's House
0011

Sanctuary
00F0

Cave to Death Mountain (Left)
00F3

Mayor's Office (Right)
00FB



00FF


004A

Eastern Palace 1F (Middle)
00E6


0180

Master Sword Grove

Entrances: 1991-06 (Early)#

STRMDT#

0104

0104
4LR

Link's House
0011
chapel

Sanctuary
00F0
doukutu -L

Cave to Death Mountain (Left)
00F3
sontyo-R

Mayor's Office (Right)
00FB
tunawatari -D


00FF
migisita-iriguti


004A
ura shinden

Eastern Palace 1F (Middle)
00E6
doukutu2-L


0100
0L

Description

STRMD0#

STRMD0      EQU $
;             3Lu     3R
        WORD    00103H,00103H
;              5L     5R     6L     6R     7L     7R      8      9 
        WORD    00105H,00105H,00106H,00106H,00107H,00107H,00108H,00109H
;               A      B     CL     CR    1BL    1BR    1CL    1CR     
        WORD    0010AH,0010BH,0010CH,0010CH,0011BH,0011BH,0011CH,0011CH     
;                        20L    20R     10L    10R     11     12    13L    14L
        WORD    00120H,0020FH,00110H,00110H,00111H,00112H,00113H,00114H
;                        15L    test   test   test   test    1AL    14R
        WORD    00115H,00116H,00117H,00118H,00119H,0011AH,00114H,00000H
;
        WORD    00000H,00000H,00000H,00000H,00000H,00000H,00000H,00000H
        WORD    00000H,00000H,00000H,00000H,00000H,00000H,00000H,00000H
        WORD    00000H,00000H,00000H,00000H,00000H,00000H,00000H,00000H
        WORD    00000H,00000H,00000H,00000H,00000H,00000H,00000H,00000H
        WORD    00000H,00000H,00000H,00000H,00000H,00000H,00000H,00000H
;
;             H1     H2     H3     H4     H5     H6     H7     H8
        WORD    00067H,00068H,00069H,00049H,00057H,00058H,00047H,00055H

103	103
3Lu	3R

Kakariko Village Inn
0105	0105
5L	5R

Description
010A	010B
A	B

Description
0120	020F
20L	20R

Description
0115	0116
15L	test

Description
[Five rows of 0000 omitted]
0067	0068

H1 ura mori hole-1	H2 -2

Description

Map Connections: 1991-06#

DMPDNRM#

DMPDNRM     EQU $       ; (MPDTNO)
;             104
        WORD    0002CH
;// 03.05.23 //     WORD    0001AH
;              11     60     61    62
        WORD    00013H,0001BH,0001BH,0001BH,0000FH,0005BH
;              F0     F1     D9    74      76     83     63     F2
        WORD    0000AH,00003H,0001EH,00030H,00030H,00030H,00030H,00018H
;              F3     F4     F5    F6      F7     F8     E8     E9
        WORD    00018H,00028H,00029H,00005H,00005H,00005H,00005H,00005H
;              FB     EB     FC    EC      FD     ED     FE     EE
        WORD    00005H,00005H,00005H,00005H,00005H,00005H,00005H,00005H
;              FF     EF     DF    F9      FA     EA     E0     38
        WORD    00005H,00005H,00005H,00003H,00003H,00003H,0001BH,0007BH
;                          4A     D2     48    57      58     56     39     0E 
        WORD    0005EH,00070H,00040H,00040H,00040H,00040H,00040H,00075H
;              E6     E7     E4    E5      55
        WORD    0000AH,00003H,00003H,00003H,0001BH,00000H,00000H,00000H
;
        WORD    00080H,00080H,00081H,00083H,00086H,0001EH

DMPDNRM (Map Connections)
0104

Link's House

Hyrule Field: Link's House Exterior

0011

Sanctuary

Description

00F0

Cave to Death Mountain (Left)

Description

00F3

Mayor's Office (Right)

Description

00FB



Description

00FF



Description

004A

Eastern Palace 1F (Middle)

Description

00E6



Description

0180

Master Sword Grove

Description

Warps

Earlier Data#

Ground Warps#

The file 日本_Ver3\asm\zel_isub0.asm has a section called "Initial RAM set [Warp] (IIT5000)". It contains a list of map square IDs that, judging from the label name, which can be interpreted as "Warp Map Data Number Room", seem to be related to places to which Link would have been able to warp.

WMPDNRM     EQU $       ; (MPDTNO)
        WORD    00003H,0000FH,00018H,0001BH,0001EH,00030H,00037H,0003BH

zel_isub0.asm also contains a section called "Initial RAM set [Danjyon] (IIT1000)". Among the large variety of information found within this section is a list of map square IDs under the label "Ground Warp Check Data". These appear to be directly connected to the list of IDs under the WMPDNRM label above. (A later version of the file, called zel_isub.asm, indicates that the GWPCKD data below was commented out on 1991-07-26.)

GWPCKD        EQU    $        ; ground warp check room
        WORD    000F9H,00182H,000F3H,00040H,00054H,00074H,0010AH,0010BH

Combining the map square IDs from WMPDNRM and GWPCKD results in the following table.

WMPDNRM (Exteriors)
03

Death Mountain: Northwest
GWPCKD (Interiors)
F9

Spectacle Rock [?]

Whirlpool Warps#

The file 日本_Ver3\asm\zel_isub.asm, which is a later version of zel_isub0.asm, adds a section called "Initial RAM set [Warp] (IIT6000)". It contains a list of map IDs for overworld map squares that have (or were originally going to have) a whirlpool warp spot.

WPCKRMD        EQU    $
         WORD    0000FH,00035H,00033H,00015H,0003FH,00012H
         WORD    0007FH,00055H

As can be seen in the images below, almost every one of these map square IDs is accurate to the final game, except for 35. It seems that the warp here may have been moved to 3E (the square below the large island in Lake Hylia), as that is the only final game map square with a whirlpool whose ID is missing from this list.

0F	35	33	15	3F	12

Hyrule Field: Waterfall of Wishing	Lake Hylia: Northwest	Great Swamp: North Pond	Hyrule Field: East of the Cemetery	Hyrule Field: Southeastern Falls	Hyrule Field: West of Sanctuary
7F	55

Dark World: Southeastern Falls	Dark World: East of Statue Garden

Later Data#

zel_isub.asm has a later version of WMPDNRM with an expanded list of map IDs. In this version, the developers appear to have combined the ground warp data and whirlpool warp data that they had previously defined discretely in WMPDNRM and WPCKRMD, respectively.

WMPDNRM     EQU $       ; (MPDTNO)
        WORD    00003H,00016H,00018H,0002CH,0002FH,00030H,0003BH,0003FH
;
        WORD    0005BH
;
        WORD    00035H,0000FH,00015H,00033H,00012H,0003FH,00055H,0007FH

In this table, a map square ID for the forced Ocarina warp to the top of the Pyramid of Power, unique to this version of the warp data, sits alone on the middle row.

Ground Warps
03

Death Mountain: Northwest
Special Case Warps
5B

Pyramid of Power: Northwest
Whirlpool Warps
35

Lake Hylia: Northwest

Comparisons#

Finally, let's compare the data in the files above, and also compare it with the warp data in the final game.

Final Ocarina Warps#

zel_isub0's WMPDNRM
03

Death Mountain: Northwest
zel_isub's WMPDNRM
03

Death Mountain: Northwest
Final Ocarina Warps
0B

Death Mountain: Southwest

Final Whirlpool Warps#

zel_isub's WPCKRMD
0F

Hyrule Field: Waterfall of Wishing
zel_isub's WMPDNRM
35

Lake Hylia: Northwest
Final Whirlpool Warps
3E

Lake Hylia: Southeast

Holes

Rooms with Holes#

The file 日本_Ver3\asm\zel_data0.asm has a section called "Hole reset room data". It contains a list of map IDs for underworld map squares in which the player can fall into holes.

HLRMDT      EQU $
        WORD    00072H,00082H                   ; rou
        WORD    00040H,000C0H                   ; shisai
        WORD    00112H
        WORD    00056H,00057H,00058H,00067H,00068H,00049H   ; ura mori
        WORD    00098H,000D1H,000C3H,000A3H,000A2H,00092H   ; ura numa
        WORD    000A0H                      ;    "
;;;;;       WORD    00029H
        WORD    0004EH,0007FH,000AFH                ; ura mizuumi
        WORD    000F0H,000F1H,000E6H,000E7H
        WORD    000C6H,000C7H,000D6H,000B4H,000B5H,000C5H   ; kame
        WORD    00024H,000D5H                   ;  "
        WORD    000C9H                      ; omote shinden
        WORD    0002AH,0001AH,0004BH                ; ura shinden
        WORD    000BCH,00044H                   ; machi
        WORD    000FBH                      ; ura yama nise iriguchi
        WORD    0007BH,0007CH,0008BH,0008DH,0009BH,0009CH   ; ura yama no tou
        WORD    0009DH,000A5H,00095H,0001CH,0005CH,0007DH   ;       "
        WORD    0004CH,00096H                       ;       "
        WORD    00120H                      ; ice rod (hachi no iru dokuthu)
        WORD    0003CH                      ; urayama futtobashi iwa in
        WORD    00123H                      ; minna niwa naisyo dayo
;;;;;       WORD    00114H                      ; jyouhouya D

zel_data0.asm's HLRMDT
Castle Dungeon
0072

Agahnim
0040

Skull Woods
0112

0056

Swamp Palace
0098

00A0

;0029

Ice Palace
004E

Turtle Rock
00F0

00C6

0024

Eastern Palace
00C9

Palace of Darkness
002A

Thieves' Town
00BC

Ganon's Tower: False Entrance
00FB

Ganon's Tower
007B

009D

004C

Ice Rod (Cave with Bee)
0120

Ganon's Tower Dash Rock Entrance
003C

It's a Secret to Everyone
0123

Information Broker D
;0114

Room 0112 makes little sense until one sees that it looked like this in the era of the Super Donkey proto.

That said, room 0114 is the same hole-less room in the final game as it is in the Underworld maps from both Super Donkey and August '91.

Respawn Points

Respawn Rooms#

zel_isub0.asm contains RESTRMDT (Restart Room Data), an earlier list of map IDs for overworld map squares that have a spawn point.

RESTRMDT    EQU $       ; start room no.     <RMXYCT>
        WORD    00104H,00011H,00080H,00055H,00041H

The final data adds a couple more:

RESTRMDT    EQU $       ; start room no.     <RMXYCT>
        WORD    00104H,00012H,00080H,00055H,00051H,000F0H,000E4H

The table below compares the two versions.

zel_isub0's RESTRMDT
0104

Link's House
zel_isub's RESTRMDT
0104
LINK-HOUSE

Link's House