Lexicon PCM 80 V1.10 - User manual

PCM 80 Version 1.10
MIDI Implementation Details

Lexicon, Inc. • 3 Oak Park • Bedford, MA 01730 USA • Tel [phone] • Fax [phone]
www.lexicon com
© 1996, Lexicon, Inc.
AllRights Reserved
Lexicon Part No. 070-11486 Printed in U.S.A.

Overview ............................................................1
Autoconfiguration ...............................................1
Types of System Exclusive Messages...............1
Enabling System Exclusive Messages ..............2
ASCII Character Data ........................................2
Numeric Values..................................................2
Nibbleized Data..................................................2
Data Errors.........................................................2
Timing Considerations .......................................2
SysEx Automation..............................................3
Other MIDI Implementation notes ......................3
System Exclusive Message Descriptions.............4
System Exclusive Message Header Block.........4
Table of SysEx Identifiers ..................................4
0x00 System Configuration Response...............5
0X01 Bank Dump...............................................6
0X02 Single Effect Dump...................................6
Single Effect Data ......................................7
Patch Save Data........................................8
0X03 Table Dump ..............................................8
0X04 Table Element Dump................................9
0X05 Chain Bulk Dump......................................9
0X06 Single Chain Dump.................................10
0X07 Chain Element Dump .............................10
0X08 Display Dump .........................................10
0X0B Parameter Dump....................................11
0X0C Button Dump ..........................................12
0X12 Soft Row Assignment Dump...................12
0X13 Patch Assignment Dump ........................13
0X14 Knob Message........................................14
0X15 Program Change Dump..........................14
0X16 Parameter Specific Response ................15
0X17 Parameter Display Response.................15
0X18 System Setup Dump...............................16
0X19 Save Current Edit Buffer Message .........16
0X1A Effect Information Response..................17
0X1C Adjust Knob Name Dump ......................17
0X1E Verbose Dump .......................................17
0X1F LED Response .......................................18
0X20 Meter Response .....................................18
0X21 Patch Display Response ........................19
0X22 Matrix Mapping Response......................19
0X23 Adjust Knob Value Dump .......................19
0X24 Soft Row Display Response ...................20
0X7C Failure Response...................................20
0X7F Data Request .........................................21
Contents
PCM 80 Algorithms ...............................................22
Algorithm 0: Plate.............................................22
Algorithm 1:Chamber .......................................23
Algorithm 2: Infinite ..........................................24
Algorithm 3: Inverse .........................................26
Algorithm 4: Concert Hall .................................27
Algorithm 5: M-Band+Rvb................................28
Algorithm 6: Glide>Hall ....................................30
Algorithm 7: Chorus+Rvb.................................31
Algorithm 8: Res1>Plate ..................................33
Algorithm 9: Res2>Plate ..................................34
Appendix A: Patch Sources by Index .................36
Remapping of MIDI Controllers........................36
Patch Source Table .........................................36
Appendix B: MIDI Bank Assignments .................37
Appendix C: MIDI Inquiry Message .....................38
Appendix D: List of Error Messages ...................39
Appendix E: System (Type 0) Parameters ..........40
Appendix F: Patchable (Type 1) Parameters ......42
Appendix G: Non-Patchable (Type 2)
Parameters .....................................................43
MIDI Implementation Chart...................................44

1
PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
PCM 80
Version 1.10 MIDI Implementation Details
An ASCII text version of this document is available on CompuServe under section seven of the MIDI
B forum. To access these documents:
• Enter CompuServe, type GO MIDIBVEN
• Select "section seven: Lexicon"
• Enter the Lexicon library
Overview
The Lexicon PCM 80 is a complex device with an involved MIDI System Exclusive implementation. This
document describes the Version 1.10 PCM 80 MIDI implementation, and assumes familiarity with the
functions and operations of the PCM 80. MIDI Implementation information relevant to PCM 80 algorithm
cards, or to Version 1.00 software, is available in separate documents
The most substantial changes to MIDI implementation between Versions 1.00 and 1.10 are in the area
of effects and bank dumps. Although the data compression used in Verson 1.00 has been eliminated,
Version 1.10 will accept dumps in that format. The software version of any PCM 80 can be determined
using the MIDI Inquiry Message, described in Appendix C of this document.
Autoconfiguration
To aid development of editors and librarians which will remain useful through the lifetime of the PCM 80,
regardless of the addition of new algorithms, we have provided a number of new System Exclusive
messagesthatallowalibrariantoautoconfigurewhenitencountersnewalgorithms.Messageswhichare
particularly useful in autoconfiguration are:
System Configuration Response
Parameter Specific Response
Parameter Display Response
Effect Information Response
Patch Display Response
Matrix Mapping Response
Soft Row Display Response
Data Request
Direction of Data Transfer
Types of System Exclusive Messages
ThereareseveraltypesofSystemExclusivemessages:DataRequests,Messages,ResponsesandData
Dumps.
Data Requests A requestis initiated bya remote device (never by aPCM 80).A request usually results
in a dump. A request for data causes no change in the state of the PCM 80.
Messages A message is sent by a remote device to a PCM 80. It is a command for which there is
no response, such as a knob message. It may cause a change in the state of the PCM
80.
Responses A response is a data packet that is sent from the PCM 80 to another device, always as
the result of a request by that device A response is never sent to the PCM 80 (It may
be harmlessly transmitted to a PCM 80, but results in no change in the PCM 80).

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
Data Dumps AdumpcontainsinformationaboutsomeaspectofthePCM80’sinternalstate.Adump
is transmitted by a PCM 80, eitheron request to another device, or to another PCM 80
(via front panel dump commands or SysEx Automation). When a dump is transmitted
toa PCM80,it willnormallycauseachange in theinternalstateofthePCM80.Adump
can also be purely informational, containing version information, etc. This sort of dump
may be received by a PCM 80 but results in no change. It is initiated only as the result
of an external request and may be considered as unidirectional.
Enabling System Exclusive Messages
The PCM 80 must be enabled via the front panel controls for receipt of System Exclusive messages. If
System Exclusive message receipt is not enabled, all System Exclusive messages are ignored. The
statusofboththePCM80MemoryProtectfunctionandPCM80ProandGoEditmodesareignoredwhen
System Exclusive is enabled.
ASCII Character Data
ManyoftheSystemExclusivemessagesincludeASCIIcharacterdata.Thisreferstothevaluesbetween
0x20 (space) and 0x7E (tilde). No other values should be used. Character fields should be padded with
spaces—the CNULL-terminatorshouldnotbeused.WhenthePCM80receivesanout-of-rangevalue,
it will convert that value to a space. The small block character on the PCM 80 display (used to indicate
patch source/destination) is transmitted as a tilde. It is not possible to transmit this character to the PCM
80 via System Exclusive messages. The ASCII backslash character (0x5c) maps to the yen character
(¥)on the PCM 80 display.
Numeric Values
Any numeric values greater than one byte are transmitted from least-significant to most-significant.
Nibble-ized data
Some data (most importantly effect data) is transmitted in a nibble-ized format, i.e. each byte of data is
transmittedasapairofbytes,with4bits ofdataineachbyte.AsinallothercasesinthePCM80,theless-
significant portion of the byte is transmitted first.
Data Errors
The PCM 80 will display System Exclusive errors when it encounters any of a number of problems,
including checksum errors and early termination of a System Exclusive message (too few characters).
It will also report back to the sender of a System Exclusive message if it cannot fulfill a legally formatted
request. This covers situations such as bank-not-present, etc.
Timing Considerations
As some messages requiresignificant timeto process, SystemExclusive information should not be sent
to the PCM 80 in bursts of more than 3 messages every 20ms. The individual message descriptions
presented later in this document note any specific time out requirements.

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PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
SysEx Automation
SysEx Automation is intended primarily for facilities using multiple PCM 80s in identical modes of
operation.Thismode,whichisenabledfromthePCM80frontpanel,asumesthatallunitshavethesame
effectsinthesamelocationsandthesamealgorithmcardsloaded,andthatasinglemasterunitfrontpanel
is controlling all slaved units. (Only front panel operations are transmitted as SysEx automation
commands.) Ideally, themaster’s Target ID(Control 3.4)should beset toAll. The MIDI inputsof all slave
unitsmustbe connecteddirectly tothemasterMIDI OUT.ThisrequiresaMIDITHRU box if there is more
than one slave. This is not an appropriate mode for effect editing.
The displays of the slaves do not necessarily track the display of the master, although the internal states
do. Although knob turns and button pushes are not transmitted, the actual parameter values are. This
guaranteesthattheslaveunitswillbelockeddirectlyto themastervalues.Theonlyexceptionstothisare
theTap,Compare and Bypass buttons, whosestates are transmitted tothe slavesbecause theychange
the internal state of the device. The others are visual only.
Not all system parameters are transmitted by SysEx Automation. Those which are transmitted are listed
in Appendix E.
Other MIDI Implementation notes
MIDI Controller 32 is used for Bank Select. MIDI Controller 0 (normally the most significant bits of Bank
Select) is ignored.
ProgramChange messages maybe lost ifthey aresent tothePCM 80before previousProgram Change
messages are completed. Controller Data may be sent at full MIDI speed, with no loss of data.

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
System Exclusive Message Descriptions
System Exclusive Message Header Block
All SysEx messages are preceded by the standard header.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID Values 0-126 are defined as specific addresses. Any mes-
sagesenttodevice127willbereceivedbyanyPCM80onthe
cable as long as it is enabled to receive System Exclusive
messages.
5 0iii iiii SysEx Identifier Identifies the type of message. All System Exclusive mes-
sages in this document are described by this identifier. Iden-
tifiers which are not used should be considered as reserved
and should not be used.
6-(n-1) Message-specific bytes See individual descriptions
n F7 EOX End of exclusive
Table of SysEx Identifiers
The following table provides a quick reference for the System Exclusive messages which are described
in detail in the following pages.
Identifier (Hex) Name of Message
0x00 System Configuration Response
0x01 Bank Dump
0x02 Single Effect Dump
0x03 Table Dump
0x04 Table Element Dump
0x05 Chain Bulk Dump
0x06 Single Chain Dump
0x07 Chain Element Dump
0x08 Display Dump
0x09-0x0A reserved
0x0B Parameter Dump
0x0C Button Dump
0x0D-0x11 reserved
0x12 Soft Row Assignment Dump
0x13 Patch Assignment Dump
0x14 Knob Message
0x15 Program Change Dump
0x16 Parameter Specific Response
0x17 Parameter Display Response
0x18 System Setup Dump
0x19 Save Current Edit Buffer Message
0x1A Effect Info Response
0x1B reserved
0x1C Adjust Knob Name Dump
0x1D reserved
0x1E Verbose Dump Message
0x1F LED Response
0x20 Meter Response
0x21 Patch Display Response
0x22 Matrix Mapping Response
0x23 Adjust Knob Value Dump
0x24 Soft Row Display Response
0x25-0x7B reserved
0x7C Failure Response
0x7D-0x7E reserved
0x7F Data Request

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PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x00 System Configuration Response
Thisresponseis transmitted by the PCM 80to aremote devicewhen requested. Itis ignored bythe PCM
80. Note that this is not a Setup Dump — it is purely informational.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x0 Configuration Data
6 0iii iiii Major Version # This is the version number that appears to the left of the decimal
point on the the integer portion of the power up display.
7 0iii iiii Minor Version # This is the version number that appears to the right of the decimal
point on the fractional portion of the power up display. On the front
panel this may be displayed as a 2-character value with a leading
zero.Forexample,aminorrevisonof1willappearasx.01. Aminor
revision of 10 will appear as x.10
8-15 0iii iiii 8 Byte Time string Time of the code build in ASCII format xx:yy:zz
(Hours:Minutes:Seconds)
16-26 0iii iiii 11 Byte Date string Date of the code build in ASCII format: xxx:yy:zzzz
(Month:Day:Year)
27-34 0000 iiii 56000 memory page count
4-byte value (nibble-ized) Number of pages (64K words/page) of memory available to the
Motorola 56002 processor. The number of pages in a standard
PCM 80 is 4. Memory can be expanded using SIMM memory.
35-148 0iii iiii 114 Byte Bank information
(Space for 57 banks) Indexed by bank, 2 characters/bank. First character=bank size.
(0=bank not present.) A non-zeroin the second byte indicates that
the bank is a non-writeable preset bank.
149 0n Card Present non-zero if present
150 0n Card Write Protect non-zero if protected
151 0iii iiii Card Version Indicatestheversion ofthecarddirectorystructure.Thisshouldbe
ignored if the Card Present bit is not set.
152 0iii iiii Card Type Types are:
0x00=ROM (holds algorithms or presets)
0x01=RAM (holds user effects, maps, setups and chains)
0x80=Bootable Diagnostics card.
This should be ignored if the Card Present bit is not set.
153-162 0iii iiii 10 Byte Name string for card This should be ignored if the Card Present bit is not set.
163 0iii iiii Page count Indicatestheamountofmemoryavailableonthecard.1page=64K.
Forexample,0x10 indicates1megabyte.This shouldbeignoredif
the Card Present bit is not set.
164 0iii iiii Count of algorithms online Number of valid algorithm IDs in the array beginning at byte 165.
These are the algorithms currently available to the system and
include internal algorithms plus any algorithms loaded from card.
Algorithms for any card not loaded into the system will not appear
here.
165-228 0iii iiii 64 Byte List of algorithm IDs Only count from byte 164 is valid.
229 0iii iiii Current User Interface Mode 0=Control; 1=Tempo; 2=Edit; 3=Program; 4=Register. Mode and
submode are purely informationaland do not affect PCM 80 ability
to respond to MIDI.
230 0iii iiii User interface in a Submode 0=False; 1=True. A submode is defined as a state of the machine
that is differentfrom that caused by pressing Control, Tempo,Edit,
Program Banks or Register Banks. This includes any of the dialog
modes such as saving an Effect, etc.
231 0iii iiii Compare mode 0=Off, 1=On
232 0iii iiii Bypass 0=Off, 1=On
233 0xF7 End of SysEx

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
0x01 Bank Dump
Thisisabidirectionaldumpofanentirebankofeffects.ItisinitiatedfromthefrontpanelasaBankDump.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x1 Effect bulk Data
6 0iii iiii Bank # SourcebankifsentbyPCM80;targetbankifreceived byPCM80.
See appendix for indices of banks.
7-70656 xxxxxxxx 50 Single effect
data packets, with
checksums after each See Description of Nibble-ized Effect Data.
70657 0xF7 End of SysEx
Notethat asit is possiblefor abankto be sparsely populated (for example, whena user has only asmall
numberofeffectssavedinbank4or5)itisimportantto checktheFlagsbyteforeacheffect.(SeeSingle
Effect Data for a description of the Flags byte.)
Note also that for any effect to be successfully transmitted or received by the PCM 80, the supporting
algorithm must be present (not necessarily running) in the unit. Internal algorithms are always present,
whereasCardalgorithms areonly present ifthecard hasbeen loaded. Ifan effectspacket istransmitted
without the algorithm present, an error message is displayed on the screen. Such cases also cause
special formatting of the effects packet. See Single Effect Data for details.When an effects packet is
received without the algorithm present, an error message is displayed and the destination remains
unchanged.
0x02 Single Effect Dump
This is a bidirectional dump initiated from the front panel as a Current Effect Dump. All numeric values
appear LSB first.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x02 Single Effect Data
6 0iii iiii Bank # If both the Bank and Program values are set to 0x7F, the dump is
that of the current edit buffer. If the dump is received by a PCM 80,
theincomingdatawillgointotheeditbuffer(loadingthenewpreset)
but the dump is not stored anywhere else in the target system.
7 0iii iiii Program #
8 - 1419 Nibbleized effect data See next section for description.
1420 Checksum This 7-bit value is a simple additive checksum that starts at the
beginning of nibble-ized data.
1421 0xF7 End of SysEx
The algorithm used by the effect must be present (not necessarily loaded) in the receiving unit for this
message to be received. If the algorithm is not present, an error message is displayed.
Nibble-izingtakesplaceinleast-significantorder.Allparametersherearedescribedasafternibble-izing
has been undone. As any of these structures may appear in a number of locations, offsets are listed as
relative offsets.

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PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
Single Effect Data
Byte
Offset Size Description Notes
0 16-bit (LSB first) Flags 0xffff=Valid Effect; 0xfffe=Blank effect slot. This is only sent during a
bankdumpwhencertainpositionsinthebankareempty.Anyothervalue
indicatesthattheeffectwasoriginallydumpedfromaVersion1.00ROM.
The internals of the dump differ from what is described here. Note that
the version 1.10 ROMwill accept effect dumps from Version 1.00— the
version 1.00 ROM will NOT accept dumps from V1.10.
2 8-bit Algorithm ID Thealgorithmmustbepresentintheunitforthispackettobetransmitted
or received. This packet has a special format if the algorithm is not
present when the packet is transmitted. The value 0x7F replaces the
AlgorithmIDwhichisplacedintheEditMatrixPosition.TheEffectName
is properly transmitted, but the remainder of the packet is 0.
3 8-bit Edit Matrix Position Position in edit matrix when Edit is pressed. Upper nibble represents
column; lower nibble represents row. See previous note in the case of
algorithm not present.
4-15 12 Bytes Effect Name Name of effect. See notes on ASCII Character Data in the Overview.
16-24 9 Bytes Knob Name NameofSoftKnob.SeenotesonASCIICharacterDataintheOverview.
25 1 Byte Adjust Knob Value Stored value for the Soft Knob.
26-35 10 Bytes Soft row assignments See Soft Row Assignment Dumps.
36-65 16-bit (LSB first)
Type 2
Parameter Values Multiple values (15) This field is an indexed array of values for all Type 2 parameters. See
Appendix G: Non-Patchable (Type 2) Parameters.
66-395 Set of 110
3-Byte values Type 1 values (110) This field is an indexed array of values for all Type 1 parameters.
1 Byte=Tempo Flag (1 if Tempo Mode); 2 Bytes=Value.
IfTempoMod=0,thenthisisa16-bitvalue(LSBfirst).IfTempoMode=1,
then 1st byte is numerator and 2nd byte is denominator. The first 22
parametersarethesameforallalgorithms.Theremainingareuniquefor
each algorithm. See Appendix F: Patchable (Type 1) Parameters.
396 31 Bytes Patch Structure 0 This structure describes a single patch. Its fields are described in the
Patch Save Data table following this section.
427 31 Bytes Patch Structure 1
458 31 Bytes Patch Structure 2
489 31 Bytes Patch Structure 3
520 31 Bytes Patch Structure 4
551 31 Bytes Patch Structure 5
582 31 Bytes Patch Structure 6
613 31 Bytes Patch Structure 7
644 31 Bytes Patch Structure 8
675 31 Bytes Patch Structure 9
706 End of Data End of Data End of Data

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
Patch Save Data
Byte
Offset Size Description Notes
0 8-bit Valid Flag 0=patch not connected, ignore following data; 1=patch connected,
following data valid.
1 8-bit Tempo Mode 0=Targetparameter notin TempoMode;1=TargetparameterinTempo
Mode.ThismustmatchthetempoflagfieldfortheType1parameterthat
is the target of the patch.
2 1 Byte Patch Source See the Patch Source Table in Appendix A.
3 1 Byte Destination List ID The value for the Destination List ID is returned by the Parameter
Specific Response (0x16).
4 2 Bytes (LSB first) Destination List Index The value for the Destination List Index is returned by the Parameter
Specific Response (0x16).
6 1 Byte Point Count 0-8=number of points in the patch. 0 isinterpreted in the same way as a
Valid Flag of 0.
7 8 3-byte values Patch Point Values Values for each of 8 possible pivot points. Fields are interpreted as: 1
Byte=Position (0-127). These should be in ascending order. 2
Bytes=Value of target parameter at the pivot point. Only the first Point
Count of these valuesis meaningful. The remainder should betransmit-
ted as 0’s.
31 End of Data End of Data End of Data
0x03 Table Dump
This is a bidirectional dump (initiated from the front panel as a Map Dump) which describes a complete
program table (map).
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x3 Table Data
6 0iii iiii Table (map) # Unlike some other objects, there is no “current” table, so the 0x7F value
hasnofunctioninthiscase.Therearenormally2 tablesinthebox(0and
1). If a RAM card is in place, there are two additional tables (2 and 3).
7 0iii iiii Bank for table
position 0 Any legitimate bank. See Appendix B: MIDI Bank Assignments. If
nothing is assigned to this position in the table, a value of 0x7F is
returned.
8 0iii iiii Offset for table
position 0 0 - 49
9-262 Bank/offset for positions 1-127
263 0xF7 End of SysEx

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PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x04) Table Element Dump
This is a bidirectional dump which describes a single position in a program table (map).
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x4 Table Element Data
6 0iii iiii Table (map) #
7 0iii iiii Offset in table 0-127
8 0iii iiii Bank Any legitimate Bank index. See Appendix B: MIDI Bank Assignments. If
nothing is assigned to this position in the table, a value of 0x7F is
returned.
9 0iii iiii Offset 0-49
10 0xF7 End of SysEx
0x05 Chain Bulk Dump
Thisis a bidirectional dump, initiated from the front panel as aChain Bulk Dump, whichdescribes a set
of program chains (either the internal set of 10 or a card set of 10).
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x5 Chain bulk
6 0000 000i Internal/Card 0=Internal; 1=Card
7-26 0iii iiii Data for chain 0
(10 if card) See following description for Single Chain Dump.
27 - 206 Data for chains 1-9
(11-19 if card)
207 0xF7 End of SysEx

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
0x06 Single Chain Dump
Thisis a bidirectionaldump,initiated from the front panelas a ChainDump, which describes acomplete
program chain.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x6 Chain Data
6 0iii iiii Chain # Unlikesome otherobjects,thereisno “current”chain,sothevalue 0x7F
hasnoeffecthere.Normallythereare10chainsavailable(0-9).IfaRAM
card is in place, an additional 10 chains (10-19) are available.
7 0iii iiii Bank for chain
position 0 Any legitimate Bank index. See Appendix B: MIDI Bank Assignments. If
nothing is assigned to this position in the table, a value of 0x7F is
returned.
8 0iii iiii Chain position offset 0-49
9-26 Bank/offset for
positions 1-9
27 0xF7 End of SysEx
0x07 Chain Element Dump
This is a bidirectional dump which describes a single position in a program chain.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x7 Chain Element Data
6 0iii iiii Chain #
7 0iii iiii Offset in chain 0-9
8 0iii iiii Bank Any legitimate Bank index. See Appendix B: MIDI Bank Assignments. If
nothing is assigned to this position in the table, a value of 0x7F is
returned.
9 0iii iiii Offset 0-49
10 0xF7 End of SysEx
0x08 Display Dump
When sent from the PCM 80, this bidirectional dump holds the current display information, whatever it
is. When sent to the PCM 80, this text is displayed for 2 seconds.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x08 Display message
6-25 0iii iiii Top line of display 20-byte copy of upper display line.
26-45 0iii iiii Bottom line of display 20-byte copy of lower display line.
46 0xF7 End of SysEx

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PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x0B Parameter Dump
Thisis a bidirectional message used when a PCM 80 is transmitting SysEx Automation data. It may be
transmitted or received by a PCM 80. Parameter types include:
Type 0 System Parameters: Parameters such as MIDI Channel, Edit Mode (Pro or Go), Mix Mode, etc.
which are not saved with an effect, but are part of the system setup.
Type 1 Patchable Parameters: Includes all parameters that can be patch destinations These are saved
with an effect.
Type 2 NonPatchable Parameters: Parameters such as envelope threshold which are saved with the
effect but cannot be patch destinations.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0B Parameter Value
6 0x Parameter Type 0=system; 1=patchable;
2=nonpatchable
7 0iiiiiii Parameter Offset See appendix according to type.
8 0000000i Tempo Mode Flag 0=Absolutemode;1=Tempo Mode.Thisflagdefinesthefollowing value
field as being an absolute 16-bit value (Flag=0) or a ratio value split into
bytes (Flag=1). It also forces the parameter into the appropriate mode.
This flag should be 0 except for those parameters that support Tempo
Mode. See the flags field for the appropriateparameters in the appendi-
ces describing the algorithms or use the Parameter Specific Response.
9 0000iiii Least-significant nibble
of absolute value or
numerator byte Out-of-range values transmitted to PCM 80 will be adjusted to legal
values.
10 0000iiii Next nibble of absolute
value or numerator byte
11 0000iiii Next nibble of absolute
value or denominator byte
12 0000iiii Most-significant nibble
of absolute value or
denominator byte
13 F7 End of SysEx

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LexiconPCM 80 Version 1.10 MIDI Implementation Details
0x0C Button Dump
Thisisbidirectional.ThosebuttonswhicharetransmittedinSysExautomationmodeare:Compare,Tap
and Bypass.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0xC Button message
6 0iii iiii Button # 0=Up; 1=Down
2=Program Banks;
3=Load
4=Register Banks
5=Store;
6=Edit
7=Compare
8=Control
9=Bypass
10=Tempo
11=Tap
12=Reserved
13=Footswitch 1
14=Reserved
15=Footswitch 2
7 0xF7 End of SysEx
Button messages may be sent in quick succession (faster than 40ms) to mimic holds. For example,
sending Program Banks every 20ms for 1 second will cause the Help message for the key to be
displayed, just as if the key on the front panel were held down. Multiple key combinations can also be
sent by sending button messages in quick succession. For example, sending an Up message
immediately followed by a Down message causes the user interface to go to position 0.0 in the current
matrix, just as if the two buttons were pressed simultaneously.
0x12 Soft Row Assignment Dump
Bidirectional. Assigns a Pro mode slot to a Go mode soft slot.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x12 Soft Row Assign
6 0n Soft Row Slot (0-9)
7 0n Substitute Row (0-9). This is the row/column that will appear in the soft row slot. A soft row
position may be de-assigned if row and column are both set to 0x0F.
The number of rows and columns is dependent on the current algo-
rithm.
8 0n Substitute Column (0-9)
9 0xF7 End of SysEx

13
PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x13 Patch Assignment Dump
This bidirectional dump contains the state of a particular patch in the currently running effect.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x13 PatchAssign
6 0n PatchID (0-9)
7-8 0000 iiii Patch Source
Nibble-ized with less
significant part first See Appendix A: Patch Sources by Index.
9 0iii iiii Patch Destination. The patchable parameter offset. A value of 0x7F indicates that the
patchistobe disconnected.Allothervaluesinthepacketremainvalid.
10 0n Point Count (0-8). Onlythe'n'following pointvaluesismeaningful.Theremaindershould
be set to 0. A point count of 0 is an alternate way to indicate a
disconnected path.
Patch Point Packet — repeated 8 times...
11 0iii iiii Point Position (0-127) Positionsshouldbein ascendingorderandmaynotbeduplicated.The
point value is independent of the specific parameter range. The range
of point value is from 0 (minimum) to 0xffff (maximum). This format is
usedsothatanewpatchdestinationcanbeselectedwhile maintaining
the contour of the patch table.
13 0000 iiii Point Value next nibble
14 0000 iiii Point Value next nibble
15 0000 iiii Point Value MS nibble.
16 000i iiii Tempo value Numerator
(1-24). Out-of-range values will beclipped andwill cause an error message to
be displayed.
17 000i iiii Tempo value
Denominator (1-24). Out-of-range values will be clipped.
7 more 7-byte point packets...
67 0xF7 End of SysEx
If this message isimproperly built, for example,if points are outof rangeor arenot defined inascending
order, the PCM 80 will attempt to correct the data. The message "Bad patch data was corrected" will be
displayed.

14
LexiconPCM 80 Version 1.10 MIDI Implementation Details
0x14 Knob Message
Host to PCM 80 only. (In SysEx Automation mode, the PCM 80 sends parameter values, not knob
messages.) Knobs operate within the current context of the user interface. For example, in Register
Banks mode, the Adjust knob is a soft knob. In Edit mode, it adjusts the displayed parameter. This
message is only useful for a remote controller.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x14 Knob Code
6 0n Knob ID: 0=Select knob; 1=Adjust knob
7 0n Least-significant
nibble of 2’s
complement knob
delta (16 bits). For example: 0xffff=-1 (counterclockwise); 0x0001=+1 (clockwise)
8 0n Next nibble
9 0n Next nibble
10 0n Most-significant nibble
11 0xF7 End of SysEx
0x15 Program Change Dump
Bidirectional. Thisis the methodused inSysEx Automation to sendProgram Changemessages.It may
be used in other cases, although the number of bytes is larger than a standard MIDI Program Change
message. The current MIDI Program Change mode selection (mapped, chained, off, etc) is ignored.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x15 Program Change code
6 0iii iiii Bank See Appendix B: MIDI Bank Assignments.
7 0iii iiii Program 0-49
8 0xF7 End of SysEx

15
PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x16 Parameter Specific Response
PCM80toHostonly.Thisdumpreturnsinformationaboutaspecificparameter.It isusefulforanediting
program that doesn’t know the count, range or name of a parameter.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x16 Parameter Specific
Data
6 0n Type 0=System;1=Patchable; 2=Non-patchable
7 0n Offset
8 0iii iiii Flags There arecurrently twobits defined inthis field:Bit 0 (0x01) Parameter
supports tempo mode. Bit 3 (0x08) Parameter is not patchable. This
overrides the type field.
9-20 0xxx xxxx 2-byte row Name See Overview for information on strings.
21-32 0xxx xxxx 12-byte parameter
name See Overview for information on strings.
33 0n Least significant
nibble of the maximum
parameter value (16-bit
unsigned) In some cases, algorithms have internal parameters which are not
controllablefromMIDIorfromthefrontpanel.Inthosecases,maximum
value=0.
34 0n Next nibble
35 0n Next nibble
36 0n Most-significant nibble
37 0xxx xxxx Destination List ID This is of interest only when an external editing program is directly
editing the Effect SysEx packet 0x02, which requires this Destination
List ID and Destination List index. The values obtained hereshould be
plugged into that packet where they determine the display position of
the parameter in the edit matrix. If theparameter is not patchable, this
field will be set to 0x7F.
38 0xxx xxx Destination List Index See above note for Destination List ID.
39 0xF7 End of SysEx
0x17 Parameter Display Response
PCM 80 to Host only. This dump returns the current display for a specific parameter. It should be useful
for an editing program that doesn’t know the display specifics for a parameter.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x17 Parameter display
data
6 0n Parameter type See Parameter Dump (0x0B).
7 0n Parameter number Some parameter numbers are algorithm dependent. See the appropri-
ate algorithm description.
8-27 0iii iiii 20-character
display string
28 0xF7 End of SysEx

16
LexiconPCM 80 Version 1.10 MIDI Implementation Details
0x18 System Setup Dump
Thisdump,whichisbothtransmittedandreceivedbythePCM80,containsallsystemparameters(those
parameters that are not part of a preset).
Note that when the PCM 80 receives a current setup (0x7F) it ignores parameter #10 (Device ID) and
parameter #11 (SysEx Enable). Those values can only be changed from the front panel or by restoring
a setup from internal memory or card.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x18 Setup Data
6 0iii iiii Setup ID 0x7F=Current; 0-4=Internal; 5-9=RAM Card. A RAM card may be
detected using the Configuration Response.
7-15 0iii iiii Setup name 9 byte ASCII string
16-19 0n Nibble-ized unsigned
short parameter value
(LS first) for first
parameter (41 total) These parameters correspond by index with the system (Type 0)
parameters.
20-183 0n Remaining parameters
184 0xF7 End of SysEx
0x19 Save Current Edit Buffer Message
Host to PCM 80 only. The current edit buffer is named and saved with this message.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x19 Save Code
6 0iii iiii Destination Bank Mustbeawriteableregisterorcardbank.Ifacardbank,thewriteprotect
tab must be off. See Appendix B: MIDI Bank Assignments.
7 0iii iiii Destination Program 0-49
8-19 0iii iiii 12-character
program name See Overview for information on ASCII characters.
20-28 0iii iiii 9-character knob
name See Overview for information on ASCII characters.
29 0xF7 End of SysEx

17
PCM 80 Version 1.10 MIDI Implementation Details
Lexicon
0x1A Effect Information Response
PCM 80 to Host only. This dump allows a remote master to get information about any of the effects in
the box.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x1A Effect Information
6 0iii iiii Bank # A bank # of 0x7F and program # of 0x7F indicates the current program.
7 0iii iiii Program #
8-23 0iii iiii Algorithm Name 16 Byte string
24-35 0iii iiii Program Name 12 Byte string
36-44 0iii iiii Knob Name 9 Byte string
45 0xF7 End of SysEx
0x1C Adjust Knob Name Dump
Bidirectional. Name string for the Adjust knob in the current effect.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x1C Adjust knob name
6-14 0iii iiii Knob name String 9 Byte string
15 0xF7 End of SysEx
0x1E Verbose Dump Message
ThisdumpisonlyreceivedbythePCM80.Itisprovidedforusewithremoteeditorstoenableanddisable
the flashing of MIDI transmission messages during PCM 80 SysEx dumps. This message can also set
anautomaticmodewhereina displaymessageistransmittedwheneverthedisplaychanges(tosupport
a remote control). Verbose state is NOT remembered by the PCM 80 over a reboot cycle. The PCM 80
always returns to normal mode (Mode 1).
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 07 PCM 80 ID
4 0iii iiii Device ID
5 0x1E Verbose message
6 0000 00xx 2 (Automatic mode) Do not flash messages on screen. In addition,
automatically send the display SysEx whenever the display changes.
Notethatthismodecancauseatremendousamountofdatatobeoutput
by the PCM 80, and some computers may have trouble keeping up.
1(normalmode)Flashmessagesonscreen.Transmitdisplayonlywhen
requested.
0 (quiet mode) Do not flash messages on screen. Transmit display only
when requested. In mode 0 and 2, no MIDI dump status messages are
displayed.
7 0xF7 End of SysEx