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CD ROM Paradise Collection 4 1995 Nov.iso
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PSCHORD.DOC
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1990-01-20
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PSChord Ver 0.90
Accompaniament Compiler for the Yamaha PSS-480
Copyright (c) 1990 David Rutkowski
PsChord is simple compiler which allows you to enter chord
progressions as text files which are then sent to the
PSS-480's chord banks. This allows a much more precise
entry of accompaniaments, plus documents the chordal
structure as a basis for improvisation, etc. Any editor
which produces pure ASCII files (PC-Write, Qedit, etc.)
can be used to create the text files. I am releasing this
program as FREEWARE. You may do whatever you like with
this program except sell it. I retain all rights to the
program and assume no liability for its use.
The text file representing the chords of a song begins
with the line:
style : N tempo : N orch : N
where "N" is a number specifying the style, tempo, etc.
For example:
style : 11 tempo : 132 orch : rbco
This specifies style 11 (TECHNO ROCK 1) at a tempo of 132
beats per minute with an instrumentation of rhythm, bass,
and chords and orchestra.
Chords are represented in the form: N-Rchord, where N is
the number of beats to play the chord, R is the root, and
chord is the chord name. For example, 4-CM is a C major
chord to be played for 4 beats and 6-F#m7 is an F-sharp
minor 7th chord to be played for six beats.
This is a chart of the available chords and how they are
represented in a PsChord text file:
┌───────────────┬───────────────────────────────┬───────────────┐
│ chord │ chord │ example │
│ symbol │ name │ │
├───────────────┼───────────────────────────────┼───────────────┤
│ M │ Major │ 4-CM │
│ m │ minor │ 2-Fm │
│ 7 │ 7th │ 1-Eb7 │
│ m7 │ minor 7th │ 12-G#m7 │
│ M7 │ Major 7th │ 4-CM7 │
│ mM7 │ Major 7th diminished 3rd │ 2-BbmM7 │
│ m7-5 │ minor 7th diminished 5th │ 2-Cm7-5 │
│ 7SUS4 │ 7th SUSPENDED 4th │ 5-F7SUS4 │
│ aug │ augmented │ 2-D#aug │
│ dim │ diminished │ 2-Dbdim │
│ 6 │ 6th │ 24-C6 │
│ m6 │ minor 6th │ 3-Gm6 │
│ 7-5 │ 7th diminished 5th │ 1-E7-5 │
└───────────────┴───────────────────────────────┴───────────────┘
In addition to chords, PsChord text files contain
information for Rhythm fills, orchestration, and style
changes. These are represented as follows:
N-Rf1 N-Rf2 N-Rf3 N-Rending (fill for N beats)
0-S34 (change to style 34)
0-Orbco (select rhythm, bass, chord,
orchestra)
Please see the included sample files with the .CHD
extension (esp. FIFTIES.CHD) for examples of how PsChord
text files represent songs.
NOTE: the limit for chord sequences in the PSS-480 is about
96 steps. Chords, rhythm/orchestra change and fills each take
one step. If this limit is surpassed, the chord bank will be
erratic when played (too fast, etc). If you want to do complex
accompaniments, it is possible to "segue" from one bank to another
by pressing a second chord banks number shortly (less than a
measure) before the desired changeover point. Without dropping
a beat, the second bank will take over at the beginning of the
next measure.
MPU-401 configuration:
If your MPU-401 is configured in a non-standard way (the standard
is IRQ = 2 and Pord address = 330H), you can either indicate the
non standard elements on the command line when invoking PSChord
with command line switches:
PSChord /i3 /a338 (IRQ=3, Address=338H)
or you can specify the non-standard elements in the configuration
file PSS.CFG in the format
irq = 3
address = 338
Please look at the included PSS.CFG file for more information.