Also, along with what cak said, if you're using the VRC6 expansion chip, you can type V07 in the VRC6 pulse channels' effects columns to produce square waves.
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Technology: the one thing that's hated & cursed at by all engineers, technologists, scientists & technicians!
If famitracker works fine for you, go ahead and use it. I can think of a myriad of reasons I'd rather stick with famitracker than try milkytracker, especially if you just want to make chippy sounds... lol.
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