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Document about how to add map CG in FR.

liuyanghejerry

219
Posts
16
Years
Document about how to add map CG in FR.

Frist,sorry for my bad English,because I'm a totally Chinese.
And when I say map CGs,in fact,I'm talking about this:
attachment.php

Here's what I find out ,and may help you add your own map CG.


Map CGs only can be used for the maps of bank 1.That is ,(1.1) can have its CG,(1.123) can have its CG,but (2.1)can't.

There's a pointers table of these CG lying on the ROM from 0x43E9E8 to 0x43EBA7.For example,0x80A4017E is offset of the first CG and its pointer is at 0x43E9E8.

There's 122 pointers there totally.So that allows map from 1.0 to 1.122 have its own CG(I don't know why there're 122 pointers,not 123...).

So,if you want create your own CGs, you should do this:
1.Draw your CG and put it in a free space.
2.Add the map at bank 1,such as (1.123).
3.Go to 0xF8230,and write a new pointer there which is a free space that can put all the pointer table.
4.Move the pointer table to the free space,also add yours after the original ones.
5.Change "Don't show name" to "0x7 ???" at the header of your map in the A-map.

That's it...

Things I don't know and need your help:
1.Why only bank 1 can have its CG?--I mean how the ASM codes run...
I'm not sure about the map data structure,so I didn't research this.

2.What about the palette of your CG?
I can find the original CG's palettes,but I don't know how to create your CG's...

Well,that's it...

Thanks for all guys reading this...

And hopes JPAN can add expand of this into his great Hacked Engine...

Tech things:
0x080F8212 -- CG pointer loaded into r0
0x080F820C -- r0 loads the offset of the first CG
 
Last edited:

liuyanghejerry

219
Posts
16
Years
007manyo said:
there actually are 123 CG spaces, if it was 0-123, it would have 124 spaces. think of it this way. if you have 5 spaces, it would be 0, 1, 2, 3, and 4. so 0-122 actually includes 122 spaces PLUS one, as zero is considered a number, last time i checked.
( i think ) you can only have CG's in one bank because if nintendo put them in every bank, the ROM would need expanded, and it wouldn't fit on a cartridge, plus, it would be pretty pointless to make a CG for your bedroom, and if you hacked a game, it would be pretty hard to replace ALL of them to match your cities.

hope i helped with your tut,

manyo
Click to expand...
Thank you~My first reader~
Well,there are 122 pointers in that table ,but there are 123 maps.That is the problem.I was saying,why there're only 122 pointers,not 123.
Yes,you're right.And,I'm considering how the game judges the bank.
Anyway, thank you,really.
 

Juan

Brazilian with a bad English
92
Posts
16
Years
Code: 
0x43E9E8 7E 01 A4 08 14 F5 41 08 98 0D 42 08

0x08A4017E = ????
0x0841F514 = tileset
0x08420D98 = tilemap

Edit:

Code: 
ROM:080F819C
ROM:080F819C ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080F819C
ROM:080F819C
ROM:080F819C Locations
ROM:080F819C
ROM:080F819C var_10          = -0x10
ROM:080F819C
ROM:080F819C                 PUSH    {R4,R5,LR}
ROM:080F819E                 SUB     SP, SP, #4
ROM:080F81A0                 LSL     R0, R0, #0x18
ROM:080F81A2                 LSR     R0, R0, #0x18
ROM:080F81A4                 BL      sub_80F80E4
ROM:080F81A8                 LSL     R0, R0, #0x18
ROM:080F81AA                 LSR     R5, R0, #0x18
ROM:080F81AC                 CMP     R5, #0x1C
ROM:080F81AE                 BEQ     loc_80F8224
ROM:080F81B0                 BL      sub_80F6808
ROM:080F81B4                 LDR     R4, =0x843E9E8  ; table pointers (????||tileset||tilemap) ???
ROM:080F81B6                 LSL     R5, R5, #4
ROM:080F81B8                 ADD     R0, R4, #0
ROM:080F81BA                 ADD     R0, #0xC
ROM:080F81BC                 ADD     R0, R5, R0
ROM:080F81BE                 LDR     R0, [R0]
ROM:080F81C0                 MOV     R1, #0xD0
ROM:080F81C2                 MOV     R2, #0x60
ROM:080F81C4                 BL      sub_80703EC
ROM:080F81C8                 ADD     R4, #4          ; first tileset pointer
ROM:080F81CA                 ADD     R4, R5, R4
ROM:080F81CC                 LDR     R1, [R4]        ; reads the offset of the tileset used
ROM:080F81CE                 MOV     R4, #0
ROM:080F81D0                 STR     R4, [SP,#0x10+var_10]
ROM:080F81D2                 MOV     R0, #0
ROM:080F81D4                 MOV     R2, #0
ROM:080F81D6                 MOV     R3, #0
ROM:080F81D8                 BL      sub_80F6878
ROM:080F81DC                 MOV     R0, #0
ROM:080F81DE                 BL      sub_8002008
ROM:080F81E2                 CMP     R0, #0
ROM:080F81E4                 BNE     loc_80F8208
ROM:080F81E6                 MOVL    R0, 0x800
ROM:080F81EA                 BL      sub_8002B9C
ROM:080F81EE                 ADD     R1, R0, #0
ROM:080F81F0                 MOV     R0, #0
ROM:080F81F2                 BL      sub_8001FA0
ROM:080F81F6                 LDR     R1, =0x203ABED
ROM:080F81F8                 MOV     R0, #1
ROM:080F81FA                 STRB    R0, [R1]
ROM:080F81FC                 B       loc_80F820C
ROM:080F81FC ; ---------------------------------------------------------------------------
ROM:080F81FE                 DCB    0
ROM:080F81FF                 DCB    0
ROM:080F8200 dword_80F8200   DCD 0x843E9E8           ; DATA XREF: Locations+18r
ROM:080F8204 dword_80F8204   DCD 0x203ABED           ; DATA XREF: Locations+5Ar
ROM:080F8208 ; ---------------------------------------------------------------------------
ROM:080F8208
ROM:080F8208 loc_80F8208                             ; CODE XREF: Locations+48j
ROM:080F8208                 LDR     R0, =0x203ABED
ROM:080F820A                 STRB    R4, [R0]
ROM:080F820C
ROM:080F820C loc_80F820C                             ; CODE XREF: Locations+60j
ROM:080F820C                 LDR     R0, =off_843E9E8
ROM:080F820E                 ADD     R0, #8          ; first tilemap pointer
ROM:080F8210                 ADD     R0, R5, R0
ROM:080F8212                 LDR     R1, [R0]        ; reads the offset of the tileset used
ROM:080F8214                 MOV     R0, #0
ROM:080F8216                 MOV     R2, #0
ROM:080F8218                 MOV     R3, #0
ROM:080F821A                 BL      sub_8002040
ROM:080F821E                 MOV     R0, #0
ROM:080F8220                 BL      sub_80020BC
ROM:080F8224
ROM:080F8224 loc_80F8224                             ; CODE XREF: Locations+12j
ROM:080F8224                 ADD     SP, SP, #4
ROM:080F8226                 POP     {R4,R5}
ROM:080F8228                 POP     {R0}
ROM:080F822A                 BX      R0
ROM:080F822A ; End of function Locations
ROM:080F822A
ROM:080F822A ; ---------------------------------------------------------------------------
ROM:080F822C dword_80F822C   DCD 0x203ABED           ; DATA XREF: Locations:loc_80F8208r
ROM:080F8230 off_80F8230     DCD off_843E9E8         ; DATA XREF: Locations:loc_80F820Cr

Subrotines:

Code: 
ROM:08001FA0
ROM:08001FA0 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:08001FA0
ROM:08001FA0
ROM:08001FA0 sub_8001FA0                             ; CODE XREF: Locations+56p
ROM:08001FA0                 PUSH    {R4,R5,LR}
ROM:08001FA2                 ADD     R5, R1, #0
ROM:08001FA4                 LSL     R0, R0, #0x18
ROM:08001FA6                 LSR     R4, R0, #0x18
ROM:08001FA8                 ADD     R0, R4, #0
ROM:08001FAA                 BL      sub_80028EC
ROM:08001FAE                 CMP     R0, #0
ROM:08001FB0                 BNE     loc_8001FCA
ROM:08001FB2                 ADD     R0, R4, #0
ROM:08001FB4                 MOV     R1, #1
ROM:08001FB6                 BL      sub_80011E4
ROM:08001FBA                 LSL     R0, R0, #0x10
ROM:08001FBC                 CMP     R0, #0
ROM:08001FBE                 BEQ     loc_8001FCA
ROM:08001FC0                 LDR     R0, =0x30008E8
ROM:08001FC2                 LSL     R1, R4, #4
ROM:08001FC4                 ADD     R0, #4
ROM:08001FC6                 ADD     R1, R1, R0
ROM:08001FC8                 STR     R5, [R1]
ROM:08001FCA
ROM:08001FCA loc_8001FCA                             ; CODE XREF: sub_8001FA0+10j
ROM:08001FCA                                         ; sub_8001FA0+1Ej
ROM:08001FCA                 POP     {R4,R5}
ROM:08001FCC                 POP     {R0}
ROM:08001FCE                 BX      R0
ROM:08001FCE ; End of function sub_8001FA0
ROM:08001FCE
ROM:08001FCE ; ---------------------------------------------------------------------------
ROM:08001FD0 dword_8001FD0   DCD 0x30008E8           ; DATA XREF: sub_8001FA0+20r



ROM:08002008
ROM:08002008 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:08002008
ROM:08002008
ROM:08002008 sub_8002008                             ; CODE XREF: Locations+42p
ROM:08002008                 PUSH    {R4,LR}
ROM:0800200A                 LSL     R0, R0, #0x18
ROM:0800200C                 LSR     R0, R0, #0x18
ROM:0800200E                 ADD     R4, R0, #0
ROM:08002010                 BL      sub_80028EC
ROM:08002014                 CMP     R0, #0
ROM:08002016                 BNE     loc_8002038
ROM:08002018                 ADD     R0, R4, #0
ROM:0800201A                 MOV     R1, #1
ROM:0800201C                 BL      sub_80011E4
ROM:08002020                 LSL     R0, R0, #0x10
ROM:08002022                 CMP     R0, #0
ROM:08002024                 BEQ     loc_8002038
ROM:08002026                 LDR     R0, =0x30008E8
ROM:08002028                 LSL     R1, R4, #4
ROM:0800202A                 ADD     R0, #4
ROM:0800202C                 ADD     R1, R1, R0
ROM:0800202E                 LDR     R0, [R1]
ROM:08002030                 B       loc_800203A
ROM:08002030 ; ---------------------------------------------------------------------------
ROM:08002032                 DCB    0
ROM:08002033                 DCB    0
ROM:08002034 dword_8002034   DCD 0x30008E8           ; DATA XREF: sub_8002008+1Er
ROM:08002038 ; ---------------------------------------------------------------------------
ROM:08002038
ROM:08002038 loc_8002038                             ; CODE XREF: sub_8002008+Ej
ROM:08002038                                         ; sub_8002008+1Cj
ROM:08002038                 MOV     R0, #0
ROM:0800203A
ROM:0800203A loc_800203A                             ; CODE XREF: sub_8002008+28j
ROM:0800203A                 POP     {R4}
ROM:0800203C                 POP     {R1}
ROM:0800203E                 BX      R1
ROM:0800203E ; End of function sub_8002008
ROM:0800203E
ROM:0800203E ; ---------------------------------------------------------------------------
ROM:08002040
ROM:08002040 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:08002040
ROM:08002040
ROM:08002040 sub_8002040                             ; CODE XREF: Locations+7Ep
ROM:08002040                 PUSH    {R4-R7,LR}
ROM:08002042                 MOV     R7, R10
ROM:08002044                 MOV     R6, R9
ROM:08002046                 MOV     R5, R8
ROM:08002048                 PUSH    {R5-R7}
ROM:0800204A                 MOV     R10, R1
ROM:0800204C                 LSL     R0, R0, #0x18
ROM:0800204E                 LSR     R4, R0, #0x18
ROM:08002050                 MOV     R9, R4
ROM:08002052                 LSL     R7, R2, #0x10
ROM:08002054                 LSR     R6, R7, #0x10
ROM:08002056                 LSL     R3, R3, #0x10
ROM:08002058                 LSR     R5, R3, #0x10
ROM:0800205A                 MOV     R8, R5
ROM:0800205C                 ADD     R0, R4, #0
ROM:0800205E                 BL      sub_80028EC
ROM:08002062                 CMP     R0, #0
ROM:08002064                 BNE     loc_80020A8
ROM:08002066                 ADD     R0, R4, #0
ROM:08002068                 BL      sub_8002900
ROM:0800206C                 CMP     R0, #0
ROM:0800206E                 BNE     loc_80020A8
ROM:08002070                 CMP     R6, #0
ROM:08002072                 BEQ     loc_8002090
ROM:08002074                 LDR     R0, =0x30008E8
ROM:08002076                 LSL     R1, R4, #4
ROM:08002078                 ADD     R0, #4
ROM:0800207A                 ADD     R1, R1, R0
ROM:0800207C                 LSL     R0, R5, #5
ROM:0800207E                 LDR     R1, [R1]
ROM:08002080                 ADD     R1, R1, R0
ROM:08002082                 LSR     R2, R7, #0x11
ROM:08002084                 MOV     R0, R10
ROM:08002086                 BL      swi_0x0b
ROM:0800208A                 B       loc_80020A8
ROM:0800208A ; ---------------------------------------------------------------------------
ROM:0800208C dword_800208C   DCD 0x30008E8           ; DATA XREF: sub_8002040+34r
ROM:08002090 ; ---------------------------------------------------------------------------
ROM:08002090
ROM:08002090 loc_8002090                             ; CODE XREF: sub_8002040+32j
ROM:08002090                 LDR     R0, =0x30008E8
ROM:08002092                 MOV     R2, R9
ROM:08002094                 LSL     R1, R2, #4
ROM:08002096                 ADD     R0, #4
ROM:08002098                 ADD     R1, R1, R0
ROM:0800209A                 MOV     R2, R8
ROM:0800209C                 LSL     R0, R2, #5
ROM:0800209E                 LDR     R1, [R1]
ROM:080020A0                 ADD     R1, R1, R0
ROM:080020A2                 MOV     R0, R10
ROM:080020A4                 BL      sub_81E3B70
ROM:080020A8
ROM:080020A8 loc_80020A8                             ; CODE XREF: sub_8002040+24j
ROM:080020A8                                         ; sub_8002040+2Ej ...
ROM:080020A8                 POP     {R3-R5}
ROM:080020AA                 MOV     R8, R3
ROM:080020AC                 MOV     R9, R4
ROM:080020AE                 MOV     R10, R5
ROM:080020B0                 POP     {R4-R7}
ROM:080020B2                 POP     {R0}
ROM:080020B4                 BX      R0
ROM:080020B4 ; End of function sub_8002040
ROM:080020B4
ROM:080020B4 ; ---------------------------------------------------------------------------
ROM:080020B6                 DCB    0
ROM:080020B7                 DCB    0
ROM:080020B8 dword_80020B8   DCD 0x30008E8           ; DATA XREF: sub_8002040:loc_8002090r

ROM:080020BC
ROM:080020BC ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080020BC
ROM:080020BC
ROM:080020BC sub_80020BC                             ; CODE XREF: Locations+84p
ROM:080020BC
ROM:080020BC var_C           = -0xC
ROM:080020BC
ROM:080020BC                 PUSH    {R4,LR}
ROM:080020BE                 SUB     SP, SP, #4
ROM:080020C0                 LSL     R0, R0, #0x18
ROM:080020C2                 LSR     R4, R0, #0x18
ROM:080020C4                 ADD     R0, R4, #0
ROM:080020C6                 BL      sub_80028EC
ROM:080020CA                 CMP     R0, #0
ROM:080020CC                 BNE     loc_8002118
ROM:080020CE                 ADD     R0, R4, #0
ROM:080020D0                 BL      sub_8002900
ROM:080020D4                 CMP     R0, #0
ROM:080020D6                 BNE     loc_8002118
ROM:080020D8                 ADD     R0, R4, #0
ROM:080020DA                 BL      sub_8002898
ROM:080020DE                 CMP     R0, #0
ROM:080020E0                 BEQ     loc_80020EA
ROM:080020E2                 CMP     R0, #1
ROM:080020E4                 BEQ     loc_80020F6
ROM:080020E6                 MOV     R2, #0
ROM:080020E8                 B       loc_8002102
ROM:080020EA ; ---------------------------------------------------------------------------
ROM:080020EA
ROM:080020EA loc_80020EA                             ; CODE XREF: sub_80020BC+24j
ROM:080020EA                 ADD     R0, R4, #0
ROM:080020EC                 MOV     R1, #0
ROM:080020EE                 BL      sub_800273C
ROM:080020F2                 LSL     R0, R0, #0x1B
ROM:080020F4                 B       loc_8002100
ROM:080020F6 ; ---------------------------------------------------------------------------
ROM:080020F6
ROM:080020F6 loc_80020F6                             ; CODE XREF: sub_80020BC+28j
ROM:080020F6                 ADD     R0, R4, #0
ROM:080020F8                 MOV     R1, #0
ROM:080020FA                 BL      sub_80027AC
ROM:080020FE                 LSL     R0, R0, #0x18
ROM:08002100
ROM:08002100 loc_8002100                             ; CODE XREF: sub_80020BC+38j
ROM:08002100                 LSR     R2, R0, #0x10
ROM:08002102
ROM:08002102 loc_8002102                             ; CODE XREF: sub_80020BC+2Cj
ROM:08002102                 LDR     R0, =0x30008E8
ROM:08002104                 LSL     R1, R4, #4
ROM:08002106                 ADD     R0, #4
ROM:08002108                 ADD     R1, R1, R0
ROM:0800210A                 LDR     R1, [R1]
ROM:0800210C                 MOV     R0, #2
ROM:0800210E                 STR     R0, [SP,#0xC+var_C]
ROM:08002110                 ADD     R0, R4, #0
ROM:08002112                 MOV     R3, #0
ROM:08002114                 BL      sub_8001298
ROM:08002118
ROM:08002118 loc_8002118                             ; CODE XREF: sub_80020BC+10j
ROM:08002118                                         ; sub_80020BC+1Aj
ROM:08002118                 ADD     SP, SP, #4
ROM:0800211A                 POP     {R4}
ROM:0800211C                 POP     {R0}
ROM:0800211E                 BX      R0
ROM:0800211E ; End of function sub_80020BC
ROM:0800211E
ROM:0800211E ; ---------------------------------------------------------------------------
ROM:08002120 dword_8002120   DCD 0x30008E8           ; DATA XREF: sub_80020BC:loc_8002102r

ROM:08002B9C
ROM:08002B9C ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:08002B9C
ROM:08002B9C
ROM:08002B9C sub_8002B9C                             ; CODE XREF: sub_80F6AA0+16p
ROM:08002B9C                                         ; Locations+4Ep
ROM:08002B9C                 PUSH    {LR}
ROM:08002B9E                 ADD     R1, R0, #0
ROM:08002BA0                 LDR     R0, =0x3000A38
ROM:08002BA2                 LDR     R0, [R0]
ROM:08002BA4                 BL      sub_800295C
ROM:08002BA8                 POP     {R1}
ROM:08002BAA                 BX      R1
ROM:08002BAA ; End of function sub_8002B9C
ROM:08002BAA
ROM:08002BAA ; ---------------------------------------------------------------------------
ROM:08002BAC dword_8002BAC   DCD 0x3000A38           ; DATA XREF: sub_8002B9C+4r

ROM:080703EC
ROM:080703EC ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080703EC
ROM:080703EC
ROM:080703EC sub_80703EC                             ; CODE XREF: Locations+28p
ROM:080703EC                 PUSH    {R4-R6,LR}
ROM:080703EE                 ADD     R6, R0, #0
ROM:080703F0                 ADD     R4, R1, #0
ROM:080703F2                 ADD     R5, R2, #0
ROM:080703F4                 LSL     R4, R4, #0x10
ROM:080703F6                 LSL     R5, R5, #0x10
ROM:080703F8                 LSR     R4, R4, #0xF
ROM:080703FA                 LDR     R1, =0x20371F8
ROM:080703FC                 ADD     R1, R4, R1
ROM:080703FE                 LSR     R5, R5, #0x11
ROM:08070400                 ADD     R2, R5, #0
ROM:08070402                 BL      swi_0x0b
ROM:08070406                 LDR     R0, =0x20375F8
ROM:08070408                 ADD     R4, R4, R0
ROM:0807040A                 ADD     R0, R6, #0
ROM:0807040C                 ADD     R1, R4, #0
ROM:0807040E                 ADD     R2, R5, #0
ROM:08070410                 BL      swi_0x0b
ROM:08070414                 POP     {R4-R6}
ROM:08070416                 POP     {R0}
ROM:08070418                 BX      R0
ROM:08070418 ; End of function sub_80703EC
ROM:08070418
ROM:08070418 ; ---------------------------------------------------------------------------
ROM:0807041A                 DCB    0
ROM:0807041B                 DCB    0
ROM:0807041C dword_807041C   DCD 0x20371F8           ; DATA XREF: sub_80703EC+Er
ROM:08070420 dword_8070420   DCD 0x20375F8           ; DATA XREF: sub_80703EC+1Ar

ROM:080F6808
ROM:080F6808 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080F6808
ROM:080F6808
ROM:080F6808 sub_80F6808                             ; CODE XREF: Locations+14p
ROM:080F6808                 PUSH    {LR}
ROM:080F680A                 LDR     R3, =0x203AB5C
ROM:080F680C                 LDR     R1, =0x203AB60
ROM:080F680E                 MOV     R2, #0
ROM:080F6810                 ADD     R0, R1, #0
ROM:080F6812                 ADD     R0, #0x7C
ROM:080F6814
ROM:080F6814 loc_80F6814                             ; CODE XREF: sub_80F6808+12j
ROM:080F6814                 STR     R2, [R0]
ROM:080F6816                 SUB     R0, #4
ROM:080F6818                 CMP     R0, R1
ROM:080F681A                 BGE     loc_80F6814
ROM:080F681C                 MOV     R0, #0
ROM:080F681E                 STRH    R0, [R3]
ROM:080F6820                 POP     {R0}
ROM:080F6822                 BX      R0
ROM:080F6822 ; End of function sub_80F6808
ROM:080F6822
ROM:080F6822 ; ---------------------------------------------------------------------------
ROM:080F6824 dword_80F6824   DCD 0x203AB5C           ; DATA XREF: sub_80F6808+2r
ROM:080F6828 dword_80F6828   DCD 0x203AB60           ; DATA XREF: sub_80F6808+4r

ROM:080F80E4
ROM:080F80E4 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080F80E4
ROM:080F80E4
ROM:080F80E4 sub_80F80E4                             ; CODE XREF: Locations+8p
ROM:080F80E4                 PUSH    {LR}
ROM:080F80E6                 LSL     R0, R0, #0x18
ROM:080F80E8                 LSR     R3, R0, #0x18
ROM:080F80EA                 MOV     R1, #0
ROM:080F80EC                 LDR     R2, =off_843E9E8
ROM:080F80EE
ROM:080F80EE loc_80F80EE                             ; CODE XREF: sub_80F80E4+22j
ROM:080F80EE                 LDRB    R0, [R2]
ROM:080F80F0                 CMP     R0, R3
ROM:080F80F2                 BNE     loc_80F8100
ROM:080F80F4                 LSL     R0, R1, #0x18
ROM:080F80F6                 LSR     R0, R0, #0x18
ROM:080F80F8                 B       loc_80F810A
ROM:080F80F8 ; ---------------------------------------------------------------------------
ROM:080F80FA                 DCB    0
ROM:080F80FB                 DCB    0
ROM:080F80FC off_80F80FC     DCD off_843E9E8         ; DATA XREF: sub_80F80E4+8r
ROM:080F8100 ; ---------------------------------------------------------------------------
ROM:080F8100
ROM:080F8100 loc_80F8100                             ; CODE XREF: sub_80F80E4+Ej
ROM:080F8100                 ADD     R2, #0x10
ROM:080F8102                 ADD     R1, #1
ROM:080F8104                 CMP     R1, #0x1B
ROM:080F8106                 BLS     loc_80F80EE
ROM:080F8108                 MOV     R0, #0x1C
ROM:080F810A
ROM:080F810A loc_80F810A                             ; CODE XREF: sub_80F80E4+14j
ROM:080F810A                 POP     {R1}
ROM:080F810C                 BX      R1
ROM:080F810C ; End of function sub_80F80E4
ROM:080F810C
ROM:080F810C ; ---------------------------------------------------------------------------

ROM:080F6878
ROM:080F6878 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:080F6878
ROM:080F6878
ROM:080F6878 sub_80F6878                             ; CODE XREF: Locations+3Cp
ROM:080F6878
ROM:080F6878 var_24          = -0x24
ROM:080F6878 var_20          = -0x20
ROM:080F6878 arg_0           =  0
ROM:080F6878
ROM:080F6878                 PUSH    {R4-R7,LR}
ROM:080F687A                 MOV     R7, R9
ROM:080F687C                 MOV     R6, R8
ROM:080F687E                 PUSH    {R6,R7}
ROM:080F6880                 SUB     SP, SP, #8
ROM:080F6882                 ADD     R4, R1, #0
ROM:080F6884                 ADD     R5, R2, #0
ROM:080F6886                 LDR     R1, [SP,#0x24+arg_0]
ROM:080F6888                 LSL     R0, R0, #0x18
ROM:080F688A                 LSR     R0, R0, #0x18
ROM:080F688C                 MOV     R8, R0
ROM:080F688E                 LSL     R3, R3, #0x10
ROM:080F6890                 LSR     R3, R3, #0x10
ROM:080F6892                 MOV     R9, R3
ROM:080F6894                 LSL     R1, R1, #0x18
ROM:080F6896                 LSR     R7, R1, #0x18
ROM:080F6898                 LDR     R6, =0x203AB5C
ROM:080F689A                 LDRH    R0, [R6]
ROM:080F689C                 CMP     R0, #0x1F
ROM:080F689E                 BHI     loc_80F68E0
ROM:080F68A0                 ADD     R0, R4, #0
ROM:080F68A2                 ADD     R1, SP, #0x24+var_20
ROM:080F68A4                 BL      sub_80F6AA0
ROM:080F68A8                 ADD     R4, R0, #0
ROM:080F68AA                 CMP     R5, #0
ROM:080F68AC                 BNE     loc_80F68B0
ROM:080F68AE                 LDR     R5, [SP,#0x24+var_20]
ROM:080F68B0
ROM:080F68B0 loc_80F68B0                             ; CODE XREF: sub_80F6878+34j
ROM:080F68B0                 CMP     R4, #0
ROM:080F68B2                 BEQ     loc_80F68D4
ROM:080F68B4                 LSL     R2, R5, #0x10
ROM:080F68B6                 LSR     R2, R2, #0x10
ROM:080F68B8                 STR     R7, [SP,#0x24+var_24]
ROM:080F68BA                 MOV     R0, R8
ROM:080F68BC                 ADD     R1, R4, #0
ROM:080F68BE                 MOV     R3, R9
ROM:080F68C0                 BL      sub_80F6AD0
ROM:080F68C4                 LDR     R2, =0x203AB60
ROM:080F68C6                 LDRH    R0, [R6]
ROM:080F68C8                 ADD     R1, R0, #1
ROM:080F68CA                 STRH    R1, [R6]
ROM:080F68CC                 LSL     R0, R0, #0x10
ROM:080F68CE                 LSR     R0, R0, #0xE
ROM:080F68D0                 ADD     R0, R0, R2
ROM:080F68D2                 STR     R4, [R0]
ROM:080F68D4
ROM:080F68D4 loc_80F68D4                             ; CODE XREF: sub_80F6878+3Aj
ROM:080F68D4                 ADD     R0, R4, #0
ROM:080F68D6                 B       loc_80F68E2
ROM:080F68D6 ; ---------------------------------------------------------------------------
ROM:080F68D8 dword_80F68D8   DCD 0x203AB5C           ; DATA XREF: sub_80F6878+20r
ROM:080F68DC dword_80F68DC   DCD 0x203AB60           ; DATA XREF: sub_80F6878+4Cr
ROM:080F68E0 ; ---------------------------------------------------------------------------
ROM:080F68E0
ROM:080F68E0 loc_80F68E0                             ; CODE XREF: sub_80F6878+26j
ROM:080F68E0                 MOV     R0, #0
ROM:080F68E2
ROM:080F68E2 loc_80F68E2                             ; CODE XREF: sub_80F6878+5Ej
ROM:080F68E2                 ADD     SP, SP, #8
ROM:080F68E4                 POP     {R3,R4}
ROM:080F68E6                 MOV     R8, R3
ROM:080F68E8                 MOV     R9, R4
ROM:080F68EA                 POP     {R4-R7}
ROM:080F68EC                 POP     {R1}
ROM:080F68EE                 BX      R1
ROM:080F68EE ; End of function sub_80F6878
ROM:080F68EE
ROM:080F68EE ; ---------------------------------------------------------------------------

I did not say the routine for 'lack of time'.
Who wants to analyze it and comment on it, feel free
 
Last edited:

liuyanghejerry

219
Posts
16
Years
Juan said:
Code: 
0x43E9E8 7E 01 A4 08 14 F5 41 08 98 0D 42 08

0x08A4017E = ????
0x0841F514 = tileset
0x08420D98 = tilemap

I did not say the routine for 'lack of time'.
Who wants to analyze it and comment on it, feel free
Click to expand...
Thanks,I'll try to analyze it...

Pokepal17 said:
Awesome tutorial!

Can this somehow be manipulated and make it so that these can be removed?
Click to expand...

While everything is clear,I'll make this a step by step tut with picture.
 
Last edited:
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