Originally posted by MathOnNapkins

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Well what I have in the NSPC for Zelda 3 is the following code:


0CA4: F7 14 MOV A,($14)+Y

0CA6: C9 F2 00 MOV $00F2,X ; Take the first four bytes of the instrument block and write them to
0CA9: C5 F3 00 MOV $00F3,A ; Dsp registers $00v4 through $00v7. See SPC docs for more info.
0CAC: 3D INC X ; The loop writes to the SRCN, ADSR1 and ADSR2, and Gain.
0CAD: FC INC Y
0CAE: AD 04 CMP Y,#$04

0CB0: D0 F2 BNE $0CA4

0CB2: CE POP X
0CB3: F7 14 MOV A,($14)+Y
0CB5: D5 21 02 MOV $0221+X,A ; This is a big endian encoding. The last 2 bytes of the six byte instrument block
0CB8: FC INC Y ; Are stored to [$0220-1]+X
0CB9: F7 14 MOV A,($14)+Y
0CBB: D5 20 02 MOV $0220+X,A
0CBE: 6F RET


SRCN = source number or the index into the sample table. This denotes what sample to use.

ADSR1 and ADSR2, and GAIN are a little more complicated and you should find some documentation. The last two bytes of the block are... some kind of multipliers for the instrument that I haven't totally figured out yet. It's a lot of code to look through and a lot of guesswork at first.

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Originally posted by blackhole89

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Meanwhile, watch your grammar at least a bit. I don't mind minor internet-style stuff, but this was a real pain to read.

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Originally posted by the announcement

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8. Do not announce your hacks without having material (i.e. screenshots) you can show. Even the most colourful description of what you are planning to do does NOT count.

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Originally posted by theory

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+Anybody familiar with the music format that can help me understand what I'm doing. My custom music is coming out ****ed up and too fast.

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