Atari POKEY instrument editor

the instrument editor for POKEY consists of these macros:

• Volume: volume sequence.
• Arpeggio: pitch sequence.
• AUDCTL: audio control register sequence:
• poly9: reduces size of LFSR. only on noise waveforms!
• high1: runs channel 1 at 1.79MHz.
• high3: runs channel 3 at 1.79MHz.
• 16-bit 1+2: enables 16-bit frequency mode by combining channels 1 and 2.
• 16-bit 3+4: enables 16-bit frequency mode by combining channels 3 and 4.
• filter 1+3: applies a high-pass "filter" by combining channels 1 and 3.
• filter 2+4: applies a high-pass "filter" by combining channels 2 and 4.
• 15KHz: runs channels at 15KHz.
• Waveform: wave selection sequence:
• 0: harsh noise (poly5+17)
• 1: square buzz (poly5)
• 2: weird noise (poly4+5)
• 3: square buzz (poly5)
• 4: soft noise (poly17)
• 5: square
• 6: bass (poly4)
• 7: buzz (poly4)
• Pitch: fine pitch.