Effects Ixx and Jxx

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This article is about the modulation speed effects on the FDS. For the 2A03 effect that shares the same name, see Ixy.

Effects Ixx and Jxx are two FDS-exclusive effects that control the high and low part of the channel's modulation speed, respectively. The effect will override any setting set in the FDS's instrument window. The range of valid values for Ixx is 00 - 0F; for Jxx, valid values are 00 - FF.

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