Single Effect Message Format; Effect Register Header Information; Algorithm Id; Position In Edit Matrix - Lexicon PCM 80 - MIDI IMPLEMENTATION DETAILS Midi Implementation Manual

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Single Effect Message Format

Bytes 8-879 of the System Exclusive Single Effect Message are described as "Nibbleized data". The 872
nibbleized bytes, when reassembled make up 435 bytes that are the PCM 80 Effect Register and a 1-byte
checksum. The 435-byte record is of the following format:

Effect Register Header Information

Algorithm ID

PCM 80 software includes ten algorithms. The numbering and naming is as follows:

Position In Edit Matrix

Position in the Edit Matrix refers to the row and slot numbers given in the PCM 80 User Guide for each
algorithm, the same as the displayed row.slot number. The format of this Edit Matrix Position is:

Register Name

The Register Name is the text name that appears when the register is selected from any of the Program,
Register, or Card banks. This text is always 12 bytes of ASCII characters with no NULL (0x00) characters,
padded with spaces (0x20) if needed to fill out the 12 bytes.

ADJUST Knob Name

The ADJUST Knob Name is the text name that appears when a register has been loaded, at least one
parameter has been patched to the ADJUST knob, and the ADJUST knob is turned. This text is always
9 bytes of ASCII characters with no NULL (0x00) characters, padded with spaces (0x20) if needed to fill
out the 12 bytes.

Bitpacked Effect Control Data

The Bitpacked Effect Control Data contains all of the parameter values and patching information that make
up the effect. Details of this data make up the entire remainder of this document.
Bytes
1-2 Count of valid bytes (n) (ls byte first)
3 Algorithm Id
4 Position in Edit Matrix
5-16 Register Name – space filled
17-25 ADJUST Knob Name – space filled
26-n Bitpacked Effect Control Data
(n+1)-435 Zero Fill
Byte Value
00
01
02
03
04
05
06
07
08
09
Bit
rrrrssss rrrr = row (0x0 through 0xf)
ssss = slot (0x0 through 0xf)
PCM 80 MIDI Implementation Details
Description
Algorithm Name
Plate
Chamber
Infinite
Inverse
Concert Hall
M-Band+Rvb
Glide>Hall
Chorus+Rvb
Res1>Plate
Res2>Plate
Meaning
17