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Pokémon Mystery Dungeon: Red Rescue Team/Script Command Parsing Code
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This is a sub-page of Pokémon Mystery Dungeon: Red Rescue Team.
 | This page is rather stubbly and could use some expansion. Are you a bad enough dude to rescue this article? |
| Script Command Parsing Code | |
| Game | Pokémon Mystery Dungeon: Red Rescue Team |
| Start Address | 0x0809EACC |
| End Address | 0x0809EB16 |
| # of Entries | 532 bytes (0x0214) |
| Entry Length | 2 bytes (0x02) |
| Total Length | 74 bytes (0x0428) |
| Back to the ROM map | |
This code is where most commands are read from scripts and redirected to their specific methods.
Once a command is executed, the value at [r9+2c] in RAM is the pointer to the start of the script. The value at [r9+24] is probably the pointer to the currently running command. r4 also sometimes has the command in the stack.
0809EACC B5F0 push r4-r7,r14 0809EACE 4657 mov r7,r10 0809EAD0 464E mov r6,r9 0809EAD2 4645 mov r5,r8 0809EAD4 B4E0 push r5-r7 0809EAD6 B0EF add sp,-1BCh ;Method Initialization 0809EAD8 4681 mov r9,r0 ;r9 is where the RAM structure starts 0809EADA 2024 mov r0,24h ; 0809EADC 4448 add r0,r9 ; 0809EADE 4682 mov r10,r0 ; 0809EAE0 4651 mov r1,r10 ;loop start, r10 is the RAM location for command pointers 0809EAE2 684A ldr r2,[r1,4h] ;retrieves next command in ROM pointer from ram 0809EAE4 61CA str r2,[r1,1Ch] ;next pointer = current pointer 0809EAE6 A902 add r1,sp,8h ;r1 = Location of arguments on stack 0809EAE8 1C10 mov r0,r2 ;r0 = next command pointer 0809EAEA C838 ldmia [r0]!,r3-r5 ;Loads first three arguments of command 4 bytes at a time. 0809EAEC C138 stmia [r1]!,r3-r5 ;Sends them to the stack. 0809EAEE 6800 ldr r0,[r0] ;Loads last (pointer) argument of command into r0. 0809EAF0 6008 str r0,[r1] ;Puts pointer argument in stack just above the other arguments. 0809EAF2 3210 add r2,10h ;Increments script index (r2 points to next command in the script) 0809EAF4 4650 mov r0,r10 0809EAF6 6042 str r2,[r0,4h] ;Stores new script index in RAM 0809EAF8 A802 add r0,sp,8h ;r0 = command byte index 0809EAFA 7800 ldrb r0,[r0] ;Load command byte into r0 (1 byte) 0809EAFC 4651 mov r1,r10 0809EAFE 3120 add r1,20h 0809EB00 7008 strb r0,[r1] ;Stores command byte in RAM 0809EB02 0600 lsl r0,r0,18h 0809EB04 0E00 lsr r0,r0,18h ;Shortens the value of the command byte to 8 bit. Not strictly necessary as it already is an 8-bit value 0809EB06 3801 sub r0,1h 0809EB08 1C0A mov r2,r1 ;Leaves a pointer to the command byte in r2 0809EB0A 28F5 cmp r0,0F5h ;If the command byte is F6 or greater, 0809EB0C D8E8 bhi 809EAE0h ;Then move on to the next command 0809EB0E 0080 lsl r0,r0,2h ;else multiply command byte by 4 0809EB10 4901 ldr r1,=809EB1Ch ;r1=jump table start 0809EB12 1840 add r0,r0,r1 ;r0 = location of pointer in jump table 0809EB14 6800 ldr r0,[r0] ;Loads command pointer into r0. 0809EB16 4687 mov r15,r0 ;Changes Instruction Pointer to jump to the command's method.
The Instruction Pointer jumps to a specific command's method. The pointers to these methods are located directly below the last instruction, and point to the locations/methods listed here by index.
Command Index ------- ------- 00040 809EAE0 00096 809EAE0 000CC 809EAE0 000CD 809EAE0 000CE 809EAE0 000D0 809EAE0 000D1 809EAE0 000D9 809EAE0 000F2 809EAE0 000F3 809EAE0 000F4 809EAE0 000F5 809EAE0 000F6 809EAE0 00001 809EEF4 00002 809EF40 00003 809EFA2 00004 809EFD6 00006 809F02A 00005 809F064 00007 809F06C 000DD 809F0C4 000DE 809F0C4 000DF 809F0C4 000E0 809F0C4 000E1 809F0C4 000E2 809F0C4 00008 809F0D0 00009 809F0D0 0000A 809F1FC 0000B 809F2C8 0000C 809F2D6 0000D 809F2D6 0000E 809F2D6 0000F 809F2D6 00010 809F2D6 00011 809F2D6 00012 809F2D6 00013 809F2D6 00014 809F2D6 00015 809F2D6 00016 809F42A 00017 809F432 00018 809F43A 00019 809F442 0001A 809F4FE 0001C 809F5AE 0001B 809F5BE 0001D 809F5C6 0001E 809F5C6 0001F 809F660 00020 809F6EA 00021 809F786 00022 809F830 00023 809F842 00024 809F854 00025 809F872 00026 809F884 00027 809F896 00028 809F896 00029 809F8E8 0002A 809F8F4 0002B 809F900 0002C 809F90C 00030 809F92E 00031 809F936 0002D 809F93E 0002E 809FAF8 0002F 809FB10 00032 809FB28 00033 809FB28 00034 809FB28 00035 809FB28 00036 809FB28 00037 809FB28 00038 809FB28 00039 809FBDA 0003A 809FC12 0003C 809FC2E 0003B 809FC40 0003D 809FC46 0003E 809FCA4 0003F 809FCC4 00042 809FCE8 00043 809FCF0 00044 809FD0A 00045 809FD38 00046 809FD6C 00047 809FDA0 00048 809FDA8 00049 809FDC2 0004C 809FDC2 0004A 809FDD4 0004D 809FDD4 0004B 809FDE2 0004E 809FDE2 0004F 809FE04 00050 809FE28 00051 809FE86 00052 809FEBE 00053 809FED0 00054 809FF00 00055 809FF32 00056 809FF46 00057 809FF62 00058 809FF78 00059 809FF9A 0005A 809FFBA 0005B 809FFE4 0005C 80A0010 0005D 80A0064 0005E 80A0096 0005F 80A010E 00060 80A0186 00061 80A0198 00069 80A0198 00062 80A01B8 0006A 80A01B8 00063 80A01F0 0006B 80A01F0 00064 80A0220 0006C 80A0220 00065 80A0250 0006D 80A0250 00066 80A0282 00067 80A0282 0006E 80A0282 0006F 80A0282 00071 80A02B2 00077 80A02B2 0007D 80A02B2 00083 80A02B2 00072 80A0310 00078 80A0310 0007E 80A0310 00084 80A0310 00073 80A0370 00079 80A0370 0007F 80A0370 00085 80A0370 00074 80A03F8 0007A 80A03F8 00080 80A03F8 00086 80A03F8 00075 80A0462 0007B 80A0462 00081 80A0462 00087 80A0462 00076 80A04F2 0007C 80A04F2 00082 80A04F2 00088 80A04F2 00068 80A0560 00070 80A0560 00089 80A057C 0008A 80A05A4 0008B 80A05F0 0008C 80A060E 0008D 80A065C 0008E 80A068A 0008F 80A068A 00090 80A068A 00093 80A07C4 00094 80A07C4 00095 80A07C4 00091 80A07CA 00092 80A07DC 00097 80A080C 00098 80A081E 00099 80A086A 0009A 80A08BE 0009B 80A08CA 0009C 80A091E 0009D 80A0986 0009E 80A0998 0009F 80A09EA 000A0 80A0A52 000A1 80A0A64 000A2 80A0AB6 000A3 80A0B1E 000A4 80A0B30 000A5 80A0B42 000A6 80A0B54 000A7 80A0B6C 000A8 80A0B88 000A9 80A0BA2 000AA 80A0BB4 000AB 80A0BDA 000AC 80A0BF6 000AD 80A0C08 000AE 80A0C20 000AF 80A0C38 000B0 80A0C50 000B1 80A0C68 000B2 80A0C80 000B3 80A0C90 000B4 80A0CA2 000B5 80A0CC8 000B6 80A0CF2 000B7 80A0D16 000B8 80A0D40 000B9 80A0D6A 000BA 80A0D7A 000BB 80A0D94 000BC 80A0DAE 000BD 80A0DD6 000BF 80A0DE2 000BE 80A0E08 00041 80A0E3A 000C0 80A0E56 000C1 80A0E56 000C2 80A0E56 000C3 80A0E56 000C4 80A0E56 000C5 80A0E56 000C6 80A0E56 000C7 80A0E56 000C8 80A0E56 000C9 80A0E56 000CA 80A0E56 000CB 80A0E56 000CF 80A10A0 000D2 80A10F8 000D3 80A10F8 000D4 80A10F8 000D5 80A10F8 000D6 80A10F8 000D7 80A10F8 000D8 80A10F8 000DA 80A129E 000DB 80A12A8 000DC 80A12B4 000E3 80A12D0 000E4 80A12E6 000E5 80A12F4 000E6 80A1318 000E7 80A1324 000E8 80A1338 000E9 80A1344 000EA 80A1368 000EB 80A1374 000EC 80A13CA 000ED 80A13F8 000EE 80A1404 000EF 80A140C 000F0 80A1428 000F1 80A142C
The E7 command and probably some others call a function at 0x080A2428 that iterates through commands one by one starting at the start of the script, and looks for the given F4 label command.