This page is read from MIDI Instrument Definitions, a Python library used in the author's other projects, in which every number is traced to a document its maker published. Its source is on GitHub.

Roland JD-XA MIDI implementation

The MIDI implementation of the Roland JD-XA: what it answers to, and the 178 controls it offers, on firmware 1.55.

At a glance

Firmware: This page describes firmware 1.55.
MIDI channel: Any one of 1 to 16.
Parts: Analog Part, 4 of them: each on a MIDI channel of its own, taking notes and controls, with 1 voice each.
Digital Part, 4 of them: each on a MIDI channel of its own, taking notes and controls, with 64 voices among them.
Program Control: on a MIDI channel of its own, taking controls and program changes.
MIDI mode: 3: omni off, poly.
Voices: Each part's own, under Parts.
Note range: 0 to 127: C-1 to G9, counting middle C as C4.
Velocity: Sent and received. Release velocity is received.
Aftertouch: Channel pressure and polyphonic, each answered. It sends aftertouch too.
Pitch bend: How far it bends is not recorded, and the range can be changed.
Program change: Received and sent, with 256 presets.
MIDI clock: Sent and received.
Start and stop: Sent and received.
Control change: 90 controls, in the tables below.
NRPN: Supported. 88 of the controls below have one.
System exclusive: Supported.

Controls

In the order the definition gives them, by part and group. Under each control is the name a program calls it by, once pymidiinstrumentdefs.load("roland/jd_xa") has loaded them.

Analog part

Controllers

Control	CC	Values
Modulation `analog_modulation`	1	0-127
Volume `analog_volume`	7	0-127 Received, never sent
Panpot `analog_panpot`	10	0-127 Received, never sent
Expression `analog_expression`	11	0-127
Hold 1 `analog_hold_1`	64	0-63 `off`, 64-127 `on`
Portamento `analog_portamento`	65	0-63 `off`, 64-127 `on` Received, never sent
Resonance `analog_resonance`	71	0-127 Received, never sent
Release Time `analog_release_time`	72	0-127 Received, never sent
Attack time `analog_attack_time`	73	0-127 Received, never sent
Cutoff `analog_cutoff`	74	0-127 Received, never sent
Decay Time `analog_decay_time`	75	0-127 Received, never sent
Reverb Send Level `analog_reverb_send_level`	91	0-127 Received, never sent

Portamento

Control	CC	NRPN	Values
Porta Time `analog_porta_time`	5		0-127

LFO

Control	CC	NRPN	Values
LFO1 Rate `analog_lfo1_rate`	16		0-127
LFO2 Rate `analog_lfo2_rate`	17		0-127
LFO1 Fade Time `analog_lfo1_fade_time`		6 MSB 0, LSB 6	0-127
LFO2 Fade Time `analog_lfo2_fade_time`		7 MSB 0, LSB 7	0-127
LFO1 Pitch Depth `analog_lfo1_pitch_depth`		9 MSB 0, LSB 9	0-127
LFO2 Pitch Depth `analog_lfo2_pitch_depth`		10 MSB 0, LSB 10	0-127
LFO1 Filter Depth `analog_lfo1_filter_depth`		12 MSB 0, LSB 12	0-127
LFO2 Filter Depth `analog_lfo2_filter_depth`		13 MSB 0, LSB 13	0-127
LFO1 Amp Depth `analog_lfo1_amp_depth`		15 MSB 0, LSB 15	0-127
LFO2 Amp Depth `analog_lfo2_amp_depth`		16 MSB 0, LSB 16	0-127

Oscillators

Control	CC	NRPN	Values
OSC1 Pitch `analog_osc1_pitch`	19		0-127
OSC1 Fine `analog_osc1_fine`	22		0-127
OSC1 PWM Depth `analog_osc1_pwm_depth`		31 MSB 0, LSB 31	0-127
OSC1 PW `analog_osc1_pw`		28 MSB 0, LSB 28	0-127
Cross Mod `analog_cross_mod`	25		0-127
OSC2 Pitch `analog_osc2_pitch`	20		0-127
OSC2 Fine `analog_osc2_fine`	23		0-127
OSC2 PWM Depth `analog_osc2_pwm_depth`		32 MSB 0, LSB 32	0-127
OSC2 PW `analog_osc2_pw`		29 MSB 0, LSB 29	0-127

Pitch envelope

Control	CC	NRPN	Values
O1 PITCH ENV Depth `analog_o1_pitch_env_depth`	26		0-127
O2 PITCH ENV Depth `analog_o2_pitch_env_depth`	27		0-127
O1 PITCH ENV Velo Sens `analog_o1_pitch_env_velo_sens`		37 MSB 0, LSB 37	0-127
O2 PITCH ENV Velo Sens `analog_o2_pitch_env_velo_sens`		38 MSB 0, LSB 38	0-127
O1 PITCH ENV Attack `analog_o1_pitch_env_attack`		43 MSB 0, LSB 43	0-127
O2 PITCH ENV Attack `analog_o2_pitch_env_attack`		44 MSB 0, LSB 44	0-127
O1 PITCH ENV Decay `analog_o1_pitch_env_decay`		46 MSB 0, LSB 46	0-127
O2 PITCH ENV Decay `analog_o2_pitch_env_decay`		47 MSB 0, LSB 47	0-127

Mixer

Control	CC	Values
MIXER OSC1 Level `analog_mixer_osc1_level`	29	0-127
MIXER OSC2 Level `analog_mixer_osc2_level`	30	0-127
MIXER AUX Level `analog_mixer_aux_level`	31	0-127

Filter

Control	CC	NRPN	Values
FILTER HPF Cutoff `analog_filter_hpf_cutoff`	114		0-127
FILTER Drive `analog_filter_drive`	115		0-127
FILTER Cutoff `analog_filter_cutoff`	102		0-127
FILTER Cutoff Fine `analog_filter_cutoff_fine`	103		0-127
FILTER Resonance `analog_filter_resonance`	105		0-127
FILTER Key Follow `analog_filter_key_follow`	111		0-127
FILTER KF Fine `analog_filter_kf_fine`	112		0-127
FILTER ENV Depth `analog_filter_env_depth`	108		0-127
FILTER ENV Velo Sens `analog_filter_env_velo_sens`		58 MSB 0, LSB 58	0-127
FILTER ENV Attack `analog_filter_env_attack`		70 MSB 0, LSB 70	0-127
FILTER ENV Decay `analog_filter_env_decay`		73 MSB 0, LSB 73	0-127
FILTER ENV Sustain `analog_filter_env_sustain`		76 MSB 0, LSB 76	0-127
FILTER ENV Release `analog_filter_env_release`		79 MSB 0, LSB 79	0-127

Amp

Control	CC	NRPN	Values
AMP Level `analog_amp_level`	117		0-127
AMP Level V-Sens `analog_amp_level_v_sens`		85 MSB 0, LSB 85	0-127
AMP ENV Attack `analog_amp_env_attack`		88 MSB 0, LSB 88	0-127
AMP ENV Decay `analog_amp_env_decay`		91 MSB 0, LSB 91	0-127
AMP ENV Sustain `analog_amp_env_sustain`		94 MSB 0, LSB 94	0-127
AMP ENV Release `analog_amp_env_release`		97 MSB 0, LSB 97	0-127

Digital part

Controllers

Control	CC	Values
Modulation `digital_modulation`	1	0-127
Volume `digital_volume`	7	0-127 Received, never sent
Panpot `digital_panpot`	10	0-127 Received, never sent
Expression `digital_expression`	11	0-127
Hold 1 `digital_hold_1`	64	0-63 `off`, 64-127 `on`
Portamento `digital_portamento`	65	0-63 `off`, 64-127 `on` Received, never sent
Resonance `digital_resonance`	71	0-127 Received, never sent
Release Time `digital_release_time`	72	0-127 Received, never sent
Attack time `digital_attack_time`	73	0-127 Received, never sent
Cutoff `digital_cutoff`	74	0-127 Received, never sent
Decay Time `digital_decay_time`	75	0-127 Received, never sent
Vibrato Rate `digital_vibrato_rate`	76	0-127 Received, never sent
Vibrato Depth `digital_vibrato_depth`	77	0-127 Received, never sent
Vibrato Delay `digital_vibrato_delay`	78	0-127 Received, never sent
Reverb Send Level `digital_reverb_send_level`	91	0-127 Received, never sent

Portamento

Control	CC	NRPN	Values
Porta Time `digital_porta_time`	5		0-127

LFO

Control	CC	NRPN	Values
Partial 1 LFO Rate `partial_1_lfo_rate`	16		0-127
Partial 2 LFO Rate `partial_2_lfo_rate`	17		0-127
Partial 3 LFO Rate `partial_3_lfo_rate`	18		0-127
Partial 1 LFO Fade Time `partial_1_lfo_fade_time`		6 MSB 0, LSB 6	0-127
Partial 2 LFO Fade Time `partial_2_lfo_fade_time`		7 MSB 0, LSB 7	0-127
Partial 3 LFO Fade Time `partial_3_lfo_fade_time`		8 MSB 0, LSB 8	0-127
Partial 1 LFO Pitch Depth `partial_1_lfo_pitch_depth`		9 MSB 0, LSB 9	0-127
Partial 2 LFO Pitch Depth `partial_2_lfo_pitch_depth`		10 MSB 0, LSB 10	0-127
Partial 3 LFO Pitch Depth `partial_3_lfo_pitch_depth`		11 MSB 0, LSB 11	0-127
Partial 1 LFO Filter Depth `partial_1_lfo_filter_depth`		12 MSB 0, LSB 12	0-127
Partial 2 LFO Filter Depth `partial_2_lfo_filter_depth`		13 MSB 0, LSB 13	0-127
Partial 3 LFO Filter Depth `partial_3_lfo_filter_depth`		14 MSB 0, LSB 14	0-127
Partial 1 LFO Amp Depth `partial_1_lfo_amp_depth`		15 MSB 0, LSB 15	0-127
Partial 2 LFO Amp Depth `partial_2_lfo_amp_depth`		16 MSB 0, LSB 16	0-127
Partial 3 LFO Amp Depth `partial_3_lfo_amp_depth`		17 MSB 0, LSB 17	0-127
Partial 1 LFO Pan Depth `partial_1_lfo_pan_depth`		18 MSB 0, LSB 18	0-127
Partial 2 LFO Pan Depth `partial_2_lfo_pan_depth`		19 MSB 0, LSB 19	0-127
Partial 3 LFO Pan Depth `partial_3_lfo_pan_depth`		20 MSB 0, LSB 20	0-127

Oscillators

Control	CC	NRPN	Values
Partial 1 OSC Pitch `partial_1_osc_pitch`	19		0-127
Partial 2 OSC Pitch `partial_2_osc_pitch`	20		0-127
Partial 3 OSC Pitch `partial_3_osc_pitch`	21		0-127
Partial 1 OSC Detune `partial_1_osc_detune`	22		0-127
Partial 2 OSC Detune `partial_2_osc_detune`	23		0-127
Partial 3 OSC Detune `partial_3_osc_detune`	24		0-127
Partial 1 OSC PWM Depth `partial_1_osc_pwm_depth`		31 MSB 0, LSB 31	0-127
Partial 2 OSC PWM Depth `partial_2_osc_pwm_depth`		32 MSB 0, LSB 32	0-127
Partial 3 OSC PWM Depth `partial_3_osc_pwm_depth`		33 MSB 0, LSB 33	0-127
Partial 1 OSC PW `partial_1_osc_pw`		28 MSB 0, LSB 28	0-127
Partial 2 OSC PW `partial_2_osc_pw`		29 MSB 0, LSB 29	0-127
Partial 3 OSC PW `partial_3_osc_pw`		30 MSB 0, LSB 30	0-127

Pitch envelope

Control	CC	NRPN	Values
Partial 1 PITCH ENV Depth `partial_1_pitch_env_depth`	26		0-127
Partial 2 PITCH ENV Depth `partial_2_pitch_env_depth`	27		0-127
Partial 3 PITCH ENV Depth `partial_3_pitch_env_depth`	28		0-127
Partial 1 PITCH ENV Attack `partial_1_pitch_env_attack`		43 MSB 0, LSB 43	0-127
Partial 2 PITCH ENV Attack `partial_2_pitch_env_attack`		44 MSB 0, LSB 44	0-127
Partial 3 PITCH ENV Attack `partial_3_pitch_env_attack`		45 MSB 0, LSB 45	0-127
Partial 1 PITCH ENV Decay `partial_1_pitch_env_decay`		46 MSB 0, LSB 46	0-127
Partial 2 PITCH ENV Decay `partial_2_pitch_env_decay`		47 MSB 0, LSB 47	0-127
Partial 3 PITCH ENV Decay `partial_3_pitch_env_decay`		48 MSB 0, LSB 48	0-127

Filter

Control	CC	NRPN	Values
Partial 1 FILTER HPF Cutoff `partial_1_filter_hpf_cutoff`	114		0-127
Partial 2 FILTER HPF Cutoff `partial_2_filter_hpf_cutoff`	115		0-127
Partial 3 FILTER HPF Cutoff `partial_3_filter_hpf_cutoff`	116		0-127
Partial 1 FILTER Cutoff `partial_1_filter_cutoff`	102		0-127
Partial 2 FILTER Cutoff `partial_2_filter_cutoff`	103		0-127
Partial 3 FILTER Cutoff `partial_3_filter_cutoff`	104		0-127
Partial 1 FILTER Resonance `partial_1_filter_resonance`	105		0-127
Partial 2 FILTER Resonance `partial_2_filter_resonance`	106		0-127
Partial 3 FILTER Resonance `partial_3_filter_resonance`	107		0-127
Partial 1 FILTER Key Follow `partial_1_filter_key_follow`	111		0-127
Partial 2 FILTER Key Follow `partial_2_filter_key_follow`	112		0-127
Partial 3 FILTER Key Follow `partial_3_filter_key_follow`	113		0-127
Partial 1 FILTER ENV Depth `partial_1_filter_env_depth`	108		0-127
Partial 2 FILTER ENV Depth `partial_2_filter_env_depth`	109		0-127
Partial 3 FILTER ENV Depth `partial_3_filter_env_depth`	110		0-127
Partial 1 FILTER ENV Velo Sens `partial_1_filter_env_velo_sens`		58 MSB 0, LSB 58	0-127
Partial 2 FILTER ENV Velo Sens `partial_2_filter_env_velo_sens`		59 MSB 0, LSB 59	0-127
Partial 3 FILTER ENV Velo Sens `partial_3_filter_env_velo_sens`		60 MSB 0, LSB 60	0-127
Partial 1 FILTER ENV Attack `partial_1_filter_env_attack`		70 MSB 0, LSB 70	0-127
Partial 2 FILTER ENV Attack `partial_2_filter_env_attack`		71 MSB 0, LSB 71	0-127
Partial 3 FILTER ENV Attack `partial_3_filter_env_attack`		72 MSB 0, LSB 72	0-127
Partial 1 FILTER ENV Decay `partial_1_filter_env_decay`		73 MSB 0, LSB 73	0-127
Partial 2 FILTER ENV Decay `partial_2_filter_env_decay`		74 MSB 0, LSB 74	0-127
Partial 3 FILTER ENV Decay `partial_3_filter_env_decay`		75 MSB 0, LSB 75	0-127
Partial 1 FILTER ENV Sustain `partial_1_filter_env_sustain`		76 MSB 0, LSB 76	0-127
Partial 2 FILTER ENV Sustain `partial_2_filter_env_sustain`		77 MSB 0, LSB 77	0-127
Partial 3 FILTER ENV Sustain `partial_3_filter_env_sustain`		78 MSB 0, LSB 78	0-127
Partial 1 FILTER ENV Release `partial_1_filter_env_release`		79 MSB 0, LSB 79	0-127
Partial 2 FILTER ENV Release `partial_2_filter_env_release`		80 MSB 0, LSB 80	0-127
Partial 3 FILTER ENV Release `partial_3_filter_env_release`		81 MSB 0, LSB 81	0-127

Amp

Control	CC	NRPN	Values
Partial 1 AMP Pan `partial_1_amp_pan`		100 MSB 0, LSB 100	0-127
Partial 2 AMP Pan `partial_2_amp_pan`		101 MSB 0, LSB 101	0-127
Partial 3 AMP Pan `partial_3_amp_pan`		102 MSB 0, LSB 102	0-127
Partial 1 AMP Level `partial_1_amp_level`	117		0-127
Partial 2 AMP Level `partial_2_amp_level`	118		0-127
Partial 3 AMP Level `partial_3_amp_level`	119		0-127
Partial 1 AMP Level V-Sens `partial_1_amp_level_v_sens`		85 MSB 0, LSB 85	0-127
Partial 2 AMP Level V-Sens `partial_2_amp_level_v_sens`		86 MSB 0, LSB 86	0-127
Partial 3 AMP Level V-Sens `partial_3_amp_level_v_sens`		87 MSB 0, LSB 87	0-127
Partial 1 AMP ENV Attack `partial_1_amp_env_attack`		88 MSB 0, LSB 88	0-127
Partial 2 AMP ENV Attack `partial_2_amp_env_attack`		89 MSB 0, LSB 89	0-127
Partial 3 AMP ENV Attack `partial_3_amp_env_attack`		90 MSB 0, LSB 90	0-127
Partial 1 AMP ENV Decay `partial_1_amp_env_decay`		91 MSB 0, LSB 91	0-127
Partial 2 AMP ENV Decay `partial_2_amp_env_decay`		92 MSB 0, LSB 92	0-127
Partial 3 AMP ENV Decay `partial_3_amp_env_decay`		93 MSB 0, LSB 93	0-127
Partial 1 AMP ENV Sustain `partial_1_amp_env_sustain`		94 MSB 0, LSB 94	0-127
Partial 2 AMP ENV Sustain `partial_2_amp_env_sustain`		95 MSB 0, LSB 95	0-127
Partial 3 AMP ENV Sustain `partial_3_amp_env_sustain`		96 MSB 0, LSB 96	0-127
Partial 1 AMP ENV Release `partial_1_amp_env_release`		97 MSB 0, LSB 97	0-127
Partial 2 AMP ENV Release `partial_2_amp_env_release`		98 MSB 0, LSB 98	0-127
Partial 3 AMP ENV Release `partial_3_amp_env_release`		99 MSB 0, LSB 99	0-127

Program control

Program parameters

Control	CC	Values
Bank Select (MSB) `bank_select_msb`	0	0-127
Bank Select (LSB) `bank_select_lsb`	32	0-127
TFX1 Select `tfx1_select`	80	0-127
TFX1 Ctrl `tfx1_ctrl`	14	0-127
TFX2 Select `tfx2_select`	81	0-127
TFX2 Ctrl `tfx2_ctrl`	15	0-127
Reverb Level `reverb_level`	12	0-127
Delay Level `delay_level`	13	0-127
Delay Time `delay_time`	82	0-127
MIC Level `mic_level`	83	0-127

Where these facts come from

Source documents

JD-XA MIDI Implementation, 1.00, dated 13 May 2015, its MIDI implementation, read on 8 October 2026 (the file read).
JD-XA Parameter Guide, e01, parameter guide, read on 8 October 2026 (the file read).
JD-XA Owner's Manual, eng02, its user manual, read on 8 October 2026 (the file read).
JD-XA Version 1.50 Supplementary Manual, 1.50, its firmware addendum, read on 8 October 2026 (the file read).
JD-XA System Program ( Ver.1.55 ), 1.55, dated March 2025, its release notes, read on 8 October 2026 (the file read).
Roland - Support - JD-XA - Owner's Manuals, its download page, read on 8 October 2026.
Roland - Support - JD-XA - Updates & Drivers, its download page, read on 8 October 2026.
Roland - JD-XA | Analog/Digital Crossover Synthesizer, its product page, read on 8 October 2026.

How they were read

Roland's MIDI Implementation for the JD-XA, version 1.00 of May 13, 2015, 22 pages: what the sound source receives and sends (pp. 1 to 6), the sequencer's messages (pp. 6 to 8), the system exclusive address map, and two charts, the sound source's (p. 21) and the sequencer's (p. 22). The Parameter Guide, 76 pages, whose CC Assignments (pp. 68 to 73) are the map the chart sends a reader to. The Owner's Manual, edition eng02, for the parts (pp. 4 and 5), the MIDI settings (p. 13) and the structure diagram that gives each part's default channel (p. 19). The Version 1.50 Supplementary Manual. Roland's page for the newest system program, with its version history; its owner's manuals and updates pages; and the product's specifications page.

THREE KINDS OF PART, AND EACH TAKES A CHANNEL OF ITS OWN. Four analogue parts, four digital parts and the program. The structure diagram gives the analogue parts default channels 1 to 4 and the digital parts 5 to 8 (manual p. 19), and each part's channel is a setting: "Specifies the MIDI channel of each part." (parameter_guide p. 3). Program changes and the program's own controllers arrive on a channel of their own, Prog Ctrl Ch, which "Specifies the MIDI receive channel on which program change messages to switch programs or control change messages that control parameters of the entire program are received from an external MIDI device." (manual p. 13); no page gives its default. So the parts below are three, each assigned a channel, and every control names one.

THE MAP IS THE PARAMETER GUIDE'S CC ASSIGNMENTS, AND THE CHART SAYS SO. The sound source chart circles 12 to 31, 80 to 83 and 102 to 119 both ways, under a footnote that sends the reader to the Parameter Guide's CC Assignments "about function of each controller number." (implementation p. 21). Those pages give a table for the analogue parts and one for the digital parts, besides the program's and the MIDI control parts', and they speak only of what a panel control outputs: that the same controller numbers are received rests on the chart, and for the NRPNs on the implementation's own sentence, below. The channel is the part's: "Even for the same controller, the MIDI channel that is output will change depending on the part that you select." (parameter_guide p. 68). An analogue part's panel edits LFO1 or LFO2, and its pitch envelope select has three settings, OSC1+2, OSC1, OSC2 (implementation p. 18), and "The MIDI messages that are output will also change depending on the LFO1/2 and PITCH ENV1/2 selection." (parameter_guide p. 68), so each LFO and each oscillator's envelope has numbers of its own, 50 rows in all; no page says what is sent with both oscillators selected. A digital part is three partials, and "The MIDI messages that are output will also change depending on the partial 1/2/3 selection." (parameter_guide p. 70): its 91 rows are portamento time and thirty parameters, each three consecutive numbers, one for each partial. Eight more rows are the program's, and "The channel follows the system parameter" (parameter_guide p. 69), Prog Ctrl Ch.

THE SAME NUMBER MEANS DIFFERENT THINGS ON THE TWO KINDS OF PART. On an analogue part 103 is FILTER Cutoff Fine, 112 FILTER KF Fine and 115 FILTER Drive; on a digital part they are the second partial's cutoff, key follow and high-pass cutoff (parameter_guide pp. 68 to 71). Cross Mod, 25, and the mixer's 29 to 31 are analogue only, and so are NRPNs 37 and 38, the two pitch envelopes' velocity sensitivity; a digital part's third partial has numbers no analogue part uses, among them 18, 21, 24 and 28.

NRPNS, AND EVERY ONE HAS A MOST SIGNIFICANT BYTE OF 0. 88 of the controls are addressed by NRPN, and the CC Assignments print each as a most and a least significant byte - NRPN MSB: 0, LSB: 31 (OSC1 PWM Depth) (parameter_guide p. 68) - so the address recorded is the least significant byte as printed, as roland/jd_xi records its own. The implementation sends a reader to the same pages for both directions: "For more about the NRPN that JD-XA receive, refer to Parameter Guide" (implementation p. 2) and "For more about the NRPN that JD-XA transmit, refer to Parameter Guide" (implementation p. 5). It asks a sender to close each one: "it is recomended that you set RPN Null (RPN Number = 7FH/7FH) when you have finished setting the value of the desired parameter." (implementation p. 2), spelling as printed.

THE CONTROLLERS THE PARTS RECEIVE ARE HERE ONCE FOR EACH KIND. The reception section lists Modulation, Portamento Time, Volume, Panpot, Expression, Hold 1, Portamento, the sound controllers 71 to 78 and the reverb send, 91 (implementation pp. 1 and 2), and five of them are under a part's own switches: "Not received when the Rx Mod parameter (PART EDIT:PART MIDI) is OFF." (implementation p. 1), and likewise for volume, pan, expression and hold, where the switch is set "For each MIDI channel" (parameter_guide p. 3). So they reach whichever part listens on the channel they arrive on. A control naming no part would mean a base channel, and no part's channel here derives from one, so each is recorded once for the analogue parts and once for the digital parts. Three are the digital parts' alone: Vibrato Rate, Vibrato Depth and Vibrato Delay are each "Not received on the Analog part." (implementation p. 2). The sound controllers set an offset from the tone's own value rather than the value itself - "vv = Cutoff value (relative change): 00H–40H–7FH (-64–0–+63)" (implementation p. 2), stored as Part Cutoff Offset (CC# 74) (implementation p. 12) - so 64 is the tone's own setting. The chart writes Vibrate rate, Vibrate depth and Vibrate delay (implementation p. 21), as the JD-Xi's chart does; the labels take the reception section's spelling.

DIRECTIONS ARE THE SOUND SOURCE CHART'S, BUT FOR ONE. Its transmitted column crosses 7, 10, 65, 71 to 78 and the RPN selectors (implementation p. 21), and the transmission section names only bank select, modulation, portamento time, data entry, expression, hold 1 and the NRPN selectors (implementation p. 5), so those are received only: the part does not send them itself. The chart's last two rows are another matter: MIDI CONTROL sends 1 to 31 and 33 to 127, and Pedal, Wheel 1 to 31, 33 to 95 and 102 to 119, each by a player's assignment (implementation p. 21), which is a setting and not a parameter of the part. The one is the reverb send, 91, recorded as received only against the chart: the chart circles 90,91 transmitted under the CC Assignments footnote (implementation p. 21), and the only controller 91 those pages print is a MIDI control part's default (parameter_guide p. 72), not a part's reverb send. 90 is circled both ways, and no page of the three documents says what controller 90 does.

PROGRAM CHANGE ON THE PROGRAM CONTROL CHANNEL, AND THE BANKS. A program change is received on Prog Ctrl Ch and sent, on a channel no page gives: "These messages are transmitted when Program is selected." (implementation p. 5), each direction under a switch, Rx Prog Chg and Tx Prog Chg (manual p. 13). Bank select is 0 and 32: a most significant byte of 85 with 0 or 1 reaches the internal programs, INT:A01 - P16, and with 32 or 33 the programs on a USB flash drive (implementation p. 1). The preset count is the internal user memory's, Internal: 256 under User Program Memory (specifications), sixteen banks of sixteen, A01 to P16, and the 1.50 supplement's preloads are as many: "The preload program sounds have been refreshed; now 256 sounds are provided." (supplement_1_50 p. 1). A USB flash drive holds another 256 (specifications), which are not counted.

CLOCK AND TRANSPORT BOTH WAYS, BY THE SEQUENCER. The sound source chart circles clock received and crosses the start and stop commands (implementation p. 21); the sequencer's chart circles both in both columns, each mark one that "o x is selectable." (implementation p. 22). Sync Mode is MASTER, REMOTE or SLAVE, and in REMOTE "The JD-XA will obey start, and stop messages from another device, but the JD-XA’s own tempo setting is used as the playback tempo." (manual p. 13); Sync Output "Specifies whether clock, start, and stop messages are transmitted to another device" (manual p. 13).

ONE VOICE FOR EACH ANALOGUE PART, AND 64 FOR THE FOUR DIGITAL PARTS TOGETHER. "Each analog part is monophonic." (manual p. 4), and Poly Stack "Lets you use the four analog parts as one four-voice poly part." (manual p. 5). The specifications give "Analog Part: 4 voices" (specifications) and "Digital Part: 64 voices (varies according to the sound generator load)" (specifications). So each analogue part records polyphony: 1, and the digital part records polyphony: 64 with polyphony_shared: true: a figure for the four together, whose engine the page calls "four-part, 64-voice digital" (specifications), and no page says how they divide it. The two kinds are counted apart by the specifications and are different engines, so the instrument says polyphony_shared: false: its parts do not draw on one pool.

THE MIDI CONTROL PARTS ARE WHAT THE JD-XA SENDS TO OTHER INSTRUMENTS, AND ARE NOT RECORDED. With MIDI CTRL on, keyboard performance and panel operations are sent "on eight channels (channels 9–16 by default)" (manual p. 11), and "MIDI CTRL lets you assign controllers to the knobs and sliders" (parameter_guide p. 72); the CC Assignments print the assignments' default values (parameter_guide pp. 72 and 73). They are settings for controlling something else, not anything the JD-XA answers to.

NOT RECORDED, AND WHY:

Prog Ctrl Ch's default, which no page gives;
the MIDI control parts, above;
controller 90, which no page explains;
68, which the address map names beside a part's legato switch, Part Legato Switch (CC# 68) (implementation p. 12), and which neither the reception section nor the chart lists;
the system exclusive address map's parameters, which this format does not carry;
the channel mode messages, 120 to 127, which this format refuses as controls;
and the sequencer's chart, which is a recorder's and not the sound source's, except for its clock and transport.