As a result, patterns can generally only be used for one voice. Little song for Lucoa, I was going to make one in Milkytracker but since Ive been on a roll with this I figured I might as well. GoatTracker patterns include the instrument number on every row. Thus, a pattern and a transposed version of the same pattern can both be played from the original pattern.
#GOATTRACKER SONGS PATCH#
So you'd either need to patch your second SID, or write a new playroutine that accepts a SID chip number in (A) or something, and use that to select which registers/addresses to use when setting the values. GoatTracker patterns have several important properties that will affect the options used for compression: GoatTracker patterns can be transposed in the orderlist.
Now we are going to refine that song by improving sounds and by adding more tracks. (Sorry, this is probably more x86 than 6502, but hopefully still understandable)Īll this will do on the interrupt will play SID B, because the SID registers known in both players point to the same SID chip, so "play_sid_b" will overwrite all the registers just set by "play_sid_a". On this article Goattracker has been introduced and a very simple song has been created. If you ran two different SID tracks on the C65 (or even the C64) in the manner below: Other great apps like BeepBox are GoatTracker, PixiTracker, ChibiTracker and. The reason this is the case is because the C64 only has one SID chip, so the player that is used in the GT export only writes to a single set of SID registers. BeepBox is an online tool for sketching and sharing instrumental music. You will need to write brand new init and interrupt routines which means you'll either need to write a new "export" function inside of GoatTracker, or write some C65 that can read either the GT source file, or one of it's exports.
#GOATTRACKER SONGS HOW TO#
In order to do what I explanied above I need to adapt either the calling code or the sid files themself.ĭoes someon have something where I can learn form how to do that? You are right - this is not real parallelity, but it would seem like it to the humans ear (as it was before with sound and game for the human on the C64). So what I mean by playing two sid-files on the two sids would be the following:ġ) Loading both sid-binayies to the memory.ģ) Having the two sections after each other in a interrupt routine.
This is the followed by the other code - so you achieve parallelity to the code for example of your game. Then you ahve a short init section somewhere at the beginning of the code.Īnd then you call the algorithem to play the sound for the next 1/60 sek. Might be I have exmplaines it in the wrong way.įor the C64 if you use a sid-file in your own program it works like this:įirst you load the sid-binary into the memory.
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