Zoom MS70-CDR MIDI Specification

Zoom MS70-CDR MIDI specification. by C. Feddema Feddema aka sixeight !!!."g#ita$fo$#ms.com% &fte$ doing the MIDI imp'ementation fo$ the Zoom ()* I bo#ght a MS70-CDR* !hich a'so s#ppo$ts midi. I !anted to be ab'e to $ead patchnames* s!itch effects on and off and a'so be ab'e to $ead the effects type and state. &nd i ha"e managed to +c$ack+ the code of the Zoom MS70CDR. Mo$e info$mation abo#t the ,Cont$o''e$ can be fo#nd he$e http!!!. http!!!."g#ita$fo$#ms.comsmf "g#ita$fo $#ms.comsmfindex index.php/ .php/ topic12123.msg1)04375msg1)0437 6o #nde$stand this g#ide yo# m#st ha"e a good #nde$standing of MIDI* bina$y and hexadecima' n#mbe$s 6his is by no means a comp'ete g#ide* b#t may se$"e as a sta$ting point to cont$o' the MS70-CDR f$om an &$d#ino based foot cont$o''e$. sing a simi'a$ app$oach as i ha"e #sed !ith the ()* I fo#nd the fo''o!ing fo''o!ing things.

8$og$am change the MS70-CDR $esponds to 8$og$am change messages. Cont$o' change &F&I9 the MS70-CDR does not $espond to CC messages System exc'#si"e MIDI consists of command bytes and data bytes. &'' command bytes ha"e a "a'#e :1;<. 6his means the >M MS70cd$ sysex messages ha"e the fo''o!ing st$#ct#$e a'' n#mbe$s a$e hexadecima' fo$ sysex messages in this doc#ment% F0 2; 00 ?1 )) F7 F0 sta$t of sysex message 2; Zoom man#fact#$ing ID 00 De"ice ID

?1 Mode' n#mbe$ of the MS70cd$ )) & command F7 @nd of sysex message 1% 6o detect the MS70-CDR I send a MIDI identity $eA#est message F0 7@ 00 0? 01 F7. 6his is a message that a'' MIDI de"ices sho#'d $espond to. 6he Zoom $esponds !ith F0 7@ 00 0? 0; 2; ?1 00 00 00 ); ;@ )1 )0 F7. i ha"e high'ighted 00 6he de"ice ID 2; 6he man#fact#$ing ID ?1 6he mode' n#mbe$ fo$ the MS70CDR ;% Sending F0 2; 00 ?1 20 F7 !i'' p#t the MS70-CDR into +edito$ mode+. 6his means that the MS70-CDR !i'' send sysex messages !hen changing effects and pa$amete$s on the #nit itse'f.. )% Sending F0 2; 00 ?1 21 F7 !i'' s!itch +edito$ mode+ off. 3% If the edito$ sends F0 2; 00 ?1 )) F7* the MS70-CDR $esponds !ith the c#$$ent Bank n#mbe$ CC00 and CC);% and the c#$$ent 8$og$am n#mbe$ 8C%

2% If the edito$ sends F0 2; 00 ?1 ;4 F7* the MS70-CDR $esponds !ith the c#$$ent patch in 13? bytes !ith command n#mbe$ ;<

00 F0 52 00 61 28 00 21 01 00 4C 00 60 00 00 19 40 | R a( ! L ` @| 10 46 06 00 00 00 00 00 00 00 00 20 01 00 00 4C 00 |F L| 20 60 00 19 40 46 00 06 00 00 00 00 00 00 00 00 21 |` @F !| 30 01 00 4C 00 60 00 00 19 40 46 06 00 00 00 00 00 | L ` @F | 40 00 00 00 21 01 00 00 4C 00 60 00 19 40 00 46 06 | ! L ` @ F | 50 00 00 00 00 00 00 00 00 21 01 00 4C 00 00 60 00 | ! L `| 60 19 40 46 06 00 00 00 00 00 00 00 00 21 00 01 00 | @F ! | 70 4C 00 60 00 19 00 40 46 06 00 00 00 00 00 00 00 |L ` @F | 80 00 00 18 0F 45 00 6D 70 74 79 20 20 20 00 20 20 | E mpty | 90 00 F7 &nd ce$tain positions the$e a$e ext$a bytes. I !i'' ca'' these +o"e$f'o!+ bytes. 6hese bytes a$e bo'd abo"e. It took me a 'ong time to fig#$e o#t !hat these !e$e fo$. B#t sysex data bytes can on'y ha"e "a'#e 0-1;7. 6his gi"es 7 bits. B#t the Zoom !ants to send

bytes of eight bits. So it !i'' p#t a'' the
abo"e I high'ighted 0x;1 0x01 and 0x3C It took a 'ong time to make sense of this data. Fi$st I fo#nd a n#mbe$ of effect catego$ies. 6hese a$e sto$ed in the 'ast fi"e bits of the 'ast byte. So !e ha"e to sp'it off the co$$ect bits fi$st by doing 0x3C E 0x1F  0x1C 6he effect catego$ies #sed in the MS70-CDR a$e 0x0; ;% Zoom noise $ed#ction ZR% 0x03 3% @A effects  0x0C 1;% Cho$#s effects  0x0@ 13% Roto effects  0x10 1?% De'ay effects  0x1; 1<% Re"e$b effects 6he n#mbe$s bet!een b$ackets a$e decima'% @xtensi"e sea$ching of the othe$ t!o bytes ga"e me the fo''o!ing +fo$m#'a+ to deciphe$ the othe$ t!o bytes and get a #niA#e n#mbe$ fo$ the effect type byte1 E 0xF<% G byte; E 0x0F% In byte1 the $e'e"ant o"e$f'o! bit has to be inc'#dedHHH

Bit 3 f$om byte1 is inc'#ded* to diffe$entiate bet!een D a'' and D $e"e$b. sing this code yo# can sea$ch fo$ the effect in the tab'e at the end of this doc#ment. ?% It is a'so possib'e to $ead a specific patch by sending   F0 2; 00 ?1 04 00 00 00 F7. 6he 'ast 00 in this command is the patch n#mbe$ !ith goes f$om 00 to ?) 0 - 100 decima'% 6he MS70-CDR $esponds !ith 12? bytes !ith command n#mbe$ 0<.

00 04 10 00 20 06 30 00 40 00 50 01 60 00 70 00

F0 52 00 61 08 00 00 28 00 | R a (z @A | 00 00 00 00 00 00 00 00 41 | @ A| 01 00 00 04 00 00 00 00 00 | @ | 00 00 20 00 41 01 00 04 00 | A | 00 00 02 00 00 00 00 00 00 | A | 00 00 00 00 00 00 00 00 00 | A | 04 00 00 00 00 00 00 00 00 | | 00 41 00 01 00 04 00 00 00 | A |

7A 00 40 41 01 00 40 06 04 00 00 00 00 00 00 00 00 40 00 00 00 00 00 00 41 01 00 00 04 00 00 00 10 00 00 41 00 00 01 00 00 00 00 00 00 00 00 00

80 00 00 00 00 00 00 00 18 0F 50 00 69 6E 6B 46 20 | P inkF | 90 20 20 00 20 20 00 06 6F 2A 3A 03 F7 | o*: | 6he st$#ct#$e is simi'a$ to the data of the c#$$ent patch. 6he fi$st high'ighted ;< is the patch name. >"e$f'o! bytes ha"e been high'ighted again. 8atchname and effect typestate bytes ha"e been #nde$'ined. 7% S!itch effect onoff  S!itch on effect 1 F0 2; 00 ?1 )1 00 00 01 on% 00 F7* S!itch off effect 1 F0 2; 00 ?1 )1 00 00 00 off% 00 F7  S!itch on effect ; F0 2; 00 ?1 )1 01 00 01 on% 00 F7 S!itch off effect ; F0 2; 00 ?1 )1 01 00 00 off% 00 F7 S!itch on effect ) F0 2; 00 ?1 )1 0; 00 01 on% 00 F7 S!itch off effect ) F0 2; 00 ?1 )1 0; 00 00 off% 00 F7 6his on'y !o$ks fo$ the fi$st th$ee effects.

@ffect 3 to ? can not be s!itched #sing this command. In my ,Cont$o''e$ I f'ip the $e'e"ant bit by changing it in the patch data. &fte$ that I send the f#'' patch data back to the MS70CDR. <% Setting the tempo does not seem to !o$k #sing a sho$t command. In my ,Cont$o''e$ I change the tempo in the c#$$ent patch data. &fte$ that I send the f#'' patch data back to the MS70CDR. 6he tempo data is fo#nd in the fo''o!ing index position Tempo tempo Tempo byte! Tempo and 3

bit 4 - 8 is bit 1-5 from second byte (index 131) bit 3 is bit 3 of the overflow (index 125) bit 2 and 1 are first byte bit 2 (index 130)

6ab'e effect types - n#mbe$s a$e decima' e$e is the tab'e !he$e the effect type can be sea$ched 6he fi$st n#mbe$ is the effect catego$y 6he second n#mbe$ is the effect type* #sing the p$e"io#s'y mentioned +fo$m#'a+ 6he$e seem to be many #n#sed n#mbe$s. it

co#'d be that the effect n#mbe$ing system is consistent on a'' Zoom M#'tiStomp de"ices* b#t as I on'y ha"e the MS70-CDR I can not confi$m this. 0* 0* +---+  1;* 142* +Co$onaCho+  1;* ;;3* +Cho$#s+ 1;* ))* +,intageC@+  1;* ;;7* +&& ;)3Cho+ 1;* )* +C@-Cho2+ 1;* )2* +C'one Cho$#s+  1;* 1?1* +S#pe$ Cho+  1;* 1?)* +Mi$age Cho$#s+ 1;* ?2* +Ste$eo Cho+ 1;* 3* +Co$ona 6$i+ 1;* 47* +@nsemb'e++  1;* 1)1* +Si'ky Cho$#s+ 1;* 1* +Det#ne+  1;* ;30* +Bass Cho$#s+ 1;* 17* +Bass Det#ne+  1;* 11)* +Bass @nsemb'e+  1;* 14)* +F'ange$+  1;* ;04* +Bass F'ange$+ 1;* ;* +,ib$ato+ 1;* 4?* +8hase$++  1;* 1;<* +6he ,ibe+ 1;* ??* +8itch SF6+  1;* 1)0* +8S+

 1;* 113* +Bass 8itch+ 1;* );* +D#o-6$em+  13* 1?0* +&#to-8an+  13* 14;* +Roto C'oset+  1?* 14)* +D#o Digita' D'y++ 1?* 1?* +De'ay+  1?* 1;4* +Stomp D'y+ 1?* ))* +Ste$eo De'ay+  1?* ;;2* +Ca$bon De'ay+ 1?* 4?* +&na'og DJ+ 1?* );* +6ape @cho+  1?* 1?1* +6ape @cho)+ 1?* ;* +D$i"e @cho+ 1?* )3* +S'apback De'ay++ 1?* ??* +Smooth De'ay+  1?* 1?0* +M#'ti 6ap De'ay+  1?* 1;<* +Re"e$se De'ay+ 1?* 4<* +o-Fi De'ay+  1?* 1)0* +S'o! &ttack D'y+  1?* 14;* +Dyna De'ay+  1?* 1?;* +6$emo'o De'ay+ 1?* ?3* +ModDe'ay+ 1?* 47* +6$igge$ o'd D'y++  1?* 143* +Fi'te$ 88-De'ay+  1?* ;;3* +Fi'te$ D'y+ 1?* ?2* +8hase De'ay+  1?* ;;?* +&#to 8an De'ay+ 1?* 1* +8itch De'ay+ 1?* )* +IC@ De'ay+

1?* <0* +ModDe'ay;+ 1<* ;3* +D Re"e$b+  1<* 1;<* +Sp$ing++  1<* 1;4* +Sp$ing?)+ 1<* ))* +8'ate+ 1<* ?3* +Room+ 1<* 4?* +6i'ed Room+  1<* 1?1* +Chambe$+  1<* 14)* +oFi Re"e$b+ 1<* );* +a''+ 1<* 1?* +D a''+  1<* ;;2* +Ch#$ch++  1<* 1?0* +&$ena Re"e$b+ 1<* ;* +Ca"e+ 1<* )3* +&mbience+  1<* ;;3* +&IR+  1<* 14;* +@a$'y Ref'ection+ 1<* ??* +(ate Re"e$b+ 1<* 4<* +Re"e$e Re"e$b+ 1<* 47* +S'ap Back Re"e$b+  1<* 1)0* +@cho++ 1<* ?2* +Mod Re"e$b+  1<* 1?;* +6$eme'o Re"e$b+  1<* 143* +o'y F'e$b+  1<* ;;?* +Dynamic Re"e$b+ 1<* )* +Shimme$ Re"e$b+ 1<* )2* +8a$tic'e Re"e$b+ 1<* ?7* +Space o'e+ 1<* 44* +Mang'ed Space+

 1<* 1)1* +D#a' Re"e$b+ ;* 1?0* +ZR+ 3* 14)* +Ste$eo (t$ (@K+ 3* ;* +Ste$eo Bass (@K+ 3* 1?* +ineSe'+