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04-16-24 03:28 PM |
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| 0 users currently in ROM Hacking | 1 guest | 1 bot |
| Main - ROM Hacking - Foofatron's asm stuff. | New thread | New reply |
| foofatron |
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 Micro-Goomba Level: 11 Posts: 9/17 EXP: 5360 Next: 625 Since: 04-12-08 Last post: 5731 days Last view: 5721 days |
I merged many of my tutorials together. For learning thumb\arm visit gbatek. For some of my tutorials you'll need to use the assemblers. How to use them:
as -o C:\MIDI2GBA\MIDI2GBA\text.o C:\MIDI2GBA\MIDI2GBA\text.s objcopy -O binary C:\MIDI2GBA\MIDI2GBA\text.o C:\MIDI2GBA\MIDI2GBA\text.bin pause ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ok well in case you didn't know midi2gba comes with the official assembler and mid2agb converts a .mid to .s so with this knowledge lets make a bat file that converts our .mid to an .s file then converts it to an object file and then to a .bin file for inserting. Its usage is like this: MID2AGB input_file [output_file] [options] input_file Filename(.MID) of Standard MIDI file. output_file Filename(.s) for AGB file.(default:input_file) Mid2agb has different options that you but after -your asm file-.s The first few are in Japanese.They are the following: -L??? Label for assembler.(default:output_file) -V??? master Volume.(default:127) -G??? voiceGroup number.(default:0) -P??? Priority.(default:0) -R??? Reverb.(default:off) -X 48 clock/beet.(default:24 c/b) -E Exact gate-time. -N No compression. Now for the rest of the bat file: PATH= C:\MIDI2GBA\MIDI2GBA; MID2AGB text.mid text.s as -o C:\MIDI2GBA\MIDI2GBA\text.o C:\MIDI2GBA\MIDI2GBA\text.s objcopy -O binary C:\MIDI2GBA\MIDI2GBA\text.o C:\MIDI2GBA\MIDI2GBA\text.bin pause Now save that as text.bat or whatever you want the name doesn't really matter. Now click! I put the pause so you can see if any errors occurred. Since these are the official assemblers you could remove the mid2agb part and use the rest to assemble your assembly file. You could just include the .s or .bin file in your code too, but if your doing by hex just copy and paste in your hex editor on an offset and you've inserted your song  .
P.S you'll have to change the folder names and .mid names unless they are the same as mine. Meaning there are two folders both named MIDI2GBA and both your midi and the tools are in there. By the way, you can't have any spaces in your folder name just use a _ instead. *Note: While retesting this I noticed some songs would not work right after asembled into a bin file. I thought maybe ld had to be used, but it crashed everytime I fed it a file. There is a gui tool that turns your midi to an object file, then you would only have to put it in object copy and you got your bin file! İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here's a list of the software interrupts (swi).: SWI 00h - SoftReset SWI 01h - RegisterRamReset SWI 02h - Halt SWI 03h - Stop SWI 06h - Div SWI 07h - DivArm SWI 08h - Sqrt SWI 09h - ArcTan SWI 0Ah - ArcTan2 SWI 0Bh - CpuSet SWI 0Ch - CpuFastSet SWI 0Dh - GetBiosChecksum SWI 0Eh - BgAffineSet SWI 0Fh - ObjAffineSet SWI 10h - BitUnPack SWI 11h - LZ77UnCompWram SWI 12h - LZ77UnCompVram SWI 13h - HuffUnComp SWI 14h - RLUnCompWram SWI 15h - RLUnCompVram SWI 16h - Diff8bitUnFilterWram SWI 17h - Diff8bitUnFilterVram SWI 18h - Diff16bitUnFilter SWI 19h - SoundBias SWI 1Ah - SoundDriverInit SWI 1Bh - SoundDriverMode SWI 1Ch - SoundDriverMain SWI 1Dh - SoundDriverVSync SWI 1Eh - SoundChannelClear SWI 1Fh - MidiKey2Freq SWI 20h..24h - SoundUndocumented SWI 25h - MultiBoot SWI 26h - HardReset SWI 27h - CustomHalt SWI 28h - SoundDriverVSyncOff SWI 29h - SoundDriverVSyncOn SWI 2Ah - SoundGetJumpList For documentation on these please refer to gbatek. They offer a more detailed description than I can give. İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3rd Gen cry on the title screen: Okay go to 080791EE (791EE in your hex editor). A little thumb here. 2006 mov r0, #0x6 (charizard cry) So the max is 255 right mov r0, #0xff (20ff)? Right, but we can use two codes to get our value!. The second part is mov r1, 0x0. Pointless, so let change it to add. The basic r0 add is 3000. I want deoxys, deoxys is number 410 the max is 255 so subtract them to get 155. 9B in hex. So we but 309b. That's FF plus 9B which equals 19a which is 410 in hex. Its easy only two thumb codes you have to edit .
My code is: 20ff 309b. Type in your hex editor the flipped values. FF 20 9B 30. Enjoy! İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Loading a compressed image: @ Foofatron 2008. @ @ Loading compressed graphics. @ @ Here's how! @ @ The "@" you see in here means comment in asm. @ @ Since the assembler doesn't know your offset, @ @ you have to calculate it like  C+4+(nn SHL 12) @
@ Bit Expl. @ @ 15-11 Must be 11110b for BL/BLX type of instructions @ @ 10-0 nn - Upper 11 bits of Target Address @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ .code 16 ldr r0, .UncompressedPalette mov r1, #0xd0 @Means which offset in the pal ram. mov r2, #0x20 @parameter, size. bl label @$080703ec lsl r0, #0x00 @Calculation room. ldr r1, .CompressedImage mov r0, #0x1 mov r2, #0x0 mov r3, #0x0 bl label @$080f6878 lsl r0, #0x00 @Calculation room. ldr r1, .RawFile mov r0, #0x1 mov r2, #0x0 mov r3, #0x0 bl label @$080f6878 lsl r0, #0x00 @Calculation room. .align 2 .UncompressedPalette: .word 0x08e39d48 .CompressedImage: .word 0x08800000 .RawFile: .word 0x08800020 Pretty self explanatory... Credits to gbatek for the bl info. The forum ruined my perfect @ box D:! İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @Change palettes. .code 16 push {r0, r1, r2, r3, r4, lr} ldr r0, .PaletteSource ldr r1, .PaletteDestination mov r2, #224 swi #11 ldr r0, .PaletteSourceSprite ldr r1, .PaletteDestinationSprite mov r2, #16 swi #11 pop {r0, r1, r2, r3, r4, pc} .align 2 .PaletteSource: .word 0x08800000 .PaletteDestination: .word 0x020375f8 .PaletteSourceSprite: .word 0x08870000 .PaletteDestinationSprite: .word 0x020377f8 @Ruby Offsets [AXVE] @Background Palettes start @ 0x0202EEC8 @Sprite Palettes start @ 0x0202F0C8 @Fire Red Offsets [BPRE] @Background Palettes start @ 0x020375f8 @Sprite Palettes start @ 0x020377f8 @credit: Zodiac for finding the ruby offsets. İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Pointers! 082350ac - front sprite pointer table. 0823654c - back sprite pointer table. 0823730c - normal palette pointer table. 082380cc - shiny palette pointer table. Ends 0823932b 083d37a0 - icon pointer table. 083d3e80 - icon palette pointer table starts at 0x083d4294 though... 083d4038 - 2nd icon palette pointer same pointers though... Starts at 0x083d4294 though... 08245ee0 - wtf? 084556f8 - some pointers and thumb code... *Note: The pointers in the icon palettes are based off evolution so the first pointer is for the bulbasuar series, the second for charmander, etc. As for the second pointer table I think that's what it is, but I can't tell. 08254784 - 0824fc40 - 0824fb08 - 083db028 - 08250c04 - 0826056c - 082605cc - This second set is codes or pointers to codes. How to reappoint these will be added... Later. In your hex editor you'll have to take away the 08. 08 means rom to the gba. İFoofatron 2008 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ İFoofatron 2008 DO NOT STEAL! You may use the asm codes and stuff in your hack though. ____________________ pho.xpt.net An awsome rom hacking site. |
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