Opcode PatchTalk User Guide - House of Synth

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NOTE: “After” can only be used with an array that already exists. Seethe section “Putting Empty into a Variable” for more information.NibblizeDeNibblizeChecksumChecksum0Nibblize ListOfValues { into | after } DestinationDeNibblize ListOfValues { into | after } DestinationChecksum ListOfValues { into | after } DestinationChecksum0 ListOfValues { into | after } DestinationThese commands all perform the same function as the Put command.However, each of them does something to the data before it is placedinto or after the Destination.Nibblize expands the data to twice its size by placing the upper andlower 4 bits (a nibble) of each byte into separate bytes. The uppernibble precedes the lower nibble in memory. Many MIDI devices usethis simple encoding of patch data for transmission. We encourageyou to store patches in denibblized format for efficient use of diskspace and memory.NOTE: One good clue as to whether the data is nibblized is whether thesize of the data that the device sends you is twice as large than what isspecified in its MIDI specification.DeNibblize contracts the data to half its size by combining each pairof bytes into a single byte. It is the reverse of Nibblize.Checksum sums every byte and appends the low-byte of the total tothe end of the data. Some MIDI devices require this value to be placednear the end of the data portion of all system exclusive messages. Seethe MIDI device’s manual for details.Checksum0 is like Checksum only the reverse of the low-byte of thetotal is appended to the data. Some MIDI devices, such as some byRoland, use this form of checksum.ViewView VariablesThis pauses a script and opens a dialog box displaying the contents ofall currently defined variables. It is useful for debugging your script.Temporarily add it at various points if you want to check what yourscript is doing. Strategic points to view variables are just before aSend command and just after a Receive command.View Variables stop and look at thevariablesOpcode Publication 1950906 - 16 - PatchTalk Guide
PatchTalk Control StructuresControl Structures are PatchTalk commands that direct Galaxy how tointerpret other PatchTalk statements. They allow you to chooseamong two or more groups of statements and/or repeatedly execute agroup of statements. Since they contain other commands, these statementsmay take up several lines in a script.IfIf Condition ThenCommandsElse --optionalEndIfCommandsIf the test indicated by Condition is true, then the first set of Commandsis run by Galaxy. Otherwise the second set of Commands is run.Note that the second set of commands is optional and, if not provided,no commands will be run if the condition is false.Note that the word then is optional.If PatchNumber < 64 check if the number is lessthan 64Put “A” into BankLetter if so, then we’re in bank AElse else the number is greaterthan or equal to 64Put “B” into BankLetter and then we’re in bank BEndIf finish the IfIf x=16; put 0 into x;EndIfone line version of “if xis 16 then set it to zero”Opcode Publication 1950906 - 17 - PatchTalk Guide
Page 1: O P C O D EPUBLICATIONPatchTalk Gui
Page 5: Patch NumberingDevice ID RangeHands
Page 8 and 9: Select the device type and click th
Page 10 and 11: Typical format for a Get Patch scri
Page 12 and 13: Send Opcode YourModules!Opcode will
Page 14 and 15: The optional wait clause puts a tex
Page 18 and 19: RepeatRepeatCommandsUntil Condition
Page 20 and 21: PatchNumThe number of the patch who
Page 22 and 23: NumbersAnywhere a numeric value is
Page 24 and 25: Lists of ValuesSome commands, notab
Page 26 and 27: Define CustomPatch TypeEdit Help Me
Page 28 and 29: • Examine the contents of bank or
Page 30 and 31: Also beware of strange things like
Page 32 and 33: PatchTalk TipsPutting Empty into aV
Page 34 and 35: Sending OtherMIDI MessagesRemember
Page 36 and 37: ** Data fields are of this type: */

Opcode PatchTalk User Guide - House of Synth

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