Posted by YamiMario

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So, apparently, after doing a bit of research on the internet, there is a method to do it.

It involves taking a .GBS file, and injecting it into a GB Music Player .GB rom, then using Goomba to convert that file into a .GBA rom, and then manually ripping the music from there.

Sappy won't work, since it doesn't use the official Nintendo music engine, and I have no clue on how to rip the music manually.

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Posted by NetSplit

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Given that FSNASM seems to have fallen off the face of the planet, I've uploaded my copy: http://acmlm.kafuka.org/uploader/get.php?id=3213

I might be remembering wrong, but I think this one is slightly newer than the Hyrule Magic one, allowing you to use tabs without exploding. I don't have a readme for it; I'm not sure if I ever did. The author doesn't seem to have a readme anymore, either. So, I'll go ahead and note down everything I know about it and what I could get from the author last time I talked to him.

Running it on the command line yields:

FSNASM (C) 1999,2001-2002 Sephiroth of Gigasoft
Usage: FSNASM [option] srcfile
Options:
-l: Produce LO-ROM
-o : Select output filename

You can use .b, .w, and .l to be explicit about what version of a particular instruction you want (so, for example, LDA.w). If you don't use those, the assembler will make its best guess.

Commands are: charset, defchar, endb, base, data, block, align, end, code, global, zram, incbin and org

"block" corresponds to resb in nasm
data, code, ram, zram and org define sections
I believe 'end' ends these segments.

defchar "EXAMPLECHARSET" "AZ"=1,"az"=27,"09"=118," "=0,s".'!?:,-;&/"=63,"\n"=129
charset "EXAMPLECHARSET"
;You can use \ to escape, for characters like "

ZRAM corresponds to addresses 0-$1fff i think, or maybe it's 0-$ff

the base directive tells it where the code really is
endb ends the base directive

If you're coding for the NES, you can use org $c00000 to put the code at the beginning of the ROM. With -l (the LoROM option), that would be org $808000

You can use incbin to include data. For example:
incbin "NESFONT.dat"
to include some NESFONT.dat file, which would presumably be your font graphics.

Use dc.x to include data, where x is b, w, or l. Data can be a mix of numbers (hex ($) or dec) and labels (or operations on labels, such as yourlabel-1)


I've used this for NES development before and it works well. I had to do org $c00000 at the start, define the header (example: dc.b "NES",26,2,1,1,0,0,0,0,0,0,0,0,0), base $8000, and then you're ready to code (just be sure to endb, end, and set up your interrupt vectors at the end of the file). You can do variable = $blah to set up your variables. I think labels require a colon after the declaration unless they're naming a table, in which case it's just yourlabel dc.x yourdata.

Hopefully someone finds this useful.

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