Effects Qxy and Rxy

From Famitracker Wiki

Qxy and Rxy are direct note slide effects that slide to the next note at a user-definable speed. It is used as an alternative to 3xx. y is the number of semitones to sweep to, x is the speed at which the slide should be performed.

Qxy slides up to the next note by decreasing the frequency register by 2x+1 per frame. Rxy slides down to the next note by increasing the frequency register by 2x+1 per frame.

Note: 2A03 has a bug that resets the duty phase when switching between certain frequencies. This can be heard as a pop and might be noticable when using vibrato or pitch slides across those frequencies.

Example

C-4 00 F ---
--- -- - ---
--- -- - Q54
--- -- - ---
--- -- - ---
--- -- - R19

C-4 is note, 00 is instrument number, F is volume. Quickly slides to E-4 at row 02 (C+4=E) and slowly slides to G-3 at row 05 (E-9=G).

Effect list

0xy - arpeggio 1xx, 2xx - pitch slides 3xx - portamento 4xy - vibrato 7xy - tremolo Axy - volume slide Bxx - jump to frame Cxx - stop Dxx - skip frame Exx - volume Fxx - speed and tempo Gxx - note delay Hxy, Ixy - hardware sweep Hxx - FDS modulation depth Ixx, Jxx - FDS modulation speed Pxx - fine pitch Qxy, Rxy - note slide Sxx - mute delay Vxx - duty/noise/wave mode Wxx - DPCM sample speed Xxx - DPCM sample retrigger Yxx - DPCM sample offset Zxx - DPCM delta counter