System80 880 Manuel utilisateur

Operation Manual

880

system80.net SYSTEM80

rev. 01/19

TAP

START

STOP

Introduction 1

The System80 880 is an analog drum machine for the

Eurorack modular synthesizer format. Its drum voice

circuits are based on the TR-808, the classic drum

machine made by Roland Corporation between 1980

and 1983. Wherever possible, the 880 uses the exact

same semiconductors specified in the original circuits.

The sound very closely matches the sound and char-

acter of the two vintage TR-808s that were used as

references during the 880's design. Variation in

component tolerances as well as component aging

may contribute to some perceptable differences in

sound between the 880 and a vintage TR-808.

However, the same holds true for sound comparisons

between original TR-808s and other 808 clones.

The 880 features all 16 of the original TR-808's analog

drum voices with one important difference: the five

switchable voices are controlled with electronic rather

than mechanical switches. The automatic switching

between the paired drum voices allows them to be

played on diﬀerent steps of the same pattern. For

example, the Low Tom can be played on Step 1 and

Step 3 of a pattern and the Low Conga can be played

on Step 2 of the same pattern; the sequencer will

automatically switch between the sounds as the

pattern plays.

The 880's sequencer features a familiar interface that

allows for Rhythm Pattern creation using programmed

or real-time step entry. Manual Mode can be used for

arrangement and improvisation during live

performance. There is also a Rhythm Compose mode

that allows patterns to be chained together into longer

compositions.

The sequencer has been updated with 12 banks of 16

Rhythm Patterns, shuffle, mutes, performance rolls, a

pair of fully assignable trigger outputs, and multiple

options for syncing to external devices.

The Eurorack modular synthesizer format invites

experimentation and improvisation. The 880 features

11 indivdual instrument outputs for separate mixing

and processing of the sounds, either within a Eurorack

system or through other devices, such as filters,

reverb, compression, distortion, digital multi-effects,

etc.

A planned Trigger Expander module will allow the

880's drum voices to be triggered externally.

Table of

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Front Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation & Setup . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Basic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Quick Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Control Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Writing Rhythm Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Playing Rhythm Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Composing The Rhythm Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Firmware updating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Version

This manual is a dynamic document that is edited and

upated to make it current with the latest 880 firmware.

For the latest version of the the firmware and

corresponding manual please visit:

http://system80.net/product/880/

This edition is for firmware version 0.9.7

(Fig. 1)

AUD INSDEL

TAP

START

STOP

ASSIGNABLE

TRIGGERS

AUTO FILL IN

SYNC MODE

MODE SELECTOR

CLEAR BUTTON

INSTRUMENT/

TRACK

SELECTORS

TEMPO CONTROL

BASIC VARIATION SELECTOR

START/STOP BUTTON

PRE-SCALE

INDICATORS

STEP BUTTONS

STEP TOGGLE

PATTER N S E LEC T

BANK SELECT

SHUFFLE/ROLL SELECT

MIDI CHANNEL SELECT

SYNC CONTROL

SYNC INPUT

MIDI INPUT

DIN SYNC INPUT/OUTPUT

INTRO/FILL VARIATION SELECTOR/ALT KEY

TAP BUTTON

INDIVIDUAL OUTPUTS

MASTER OUTPUT

MASTER VOLUME

SHIFT-WRITE/NEXT KEY

Front

Panel

Layout

Installation

and Setup 3

The 880 is a 60 HP Eurorack module. It must be

installed correctly in a Eurorack case and supplied with

Eurorack standard power. Use the supplied screws

and washers to install the 880 in your Eurorack case.

Set Trigger 2

Level

Connecting Power The 880 uses a standard Eurorack non-shrouded/non-

keyed power connector. The cutout in the back panel,

however, does provide a keyed opening to ensure the

cable is connected in the correct orientation (Fig. 2).

A standard 10 pin Eurorack power cable is supplied.

The red stripe on the power cable indicates the pos-

ition of the −12V conductor. When connecting the

power cable ensure that the red stripe side of the cable

is aligned with the thick line next to the power header

on the back panel. Connect the 10 pin connector to the

880's power header and connect the 16 pin connector

to your system's power bus board.

The 880 is designed to withstand brief conditions of

reverse power, but prolonged connection to reverse

polarity may damage the protection diodes and require

module servicing.

Fig. 2 Eurorack power header, back panel

CAUTION: Do not apply power to the 880 when it is

not securely installed in a Eurorack case.

Fig. 3 Tri gg er 2 level j um per, b ac k p ane l

5 Volt setting (default):

12 Volt setting:

Tri gg er 2 has a s ele ct ab le ou tp ut level t ha t all ows th e

trigger output to be set to 5 Volts or 12 Volts. A 12 Volt

trigger level may be required to trigger the envelopes

and clock inputs of some vintage equipment (eg. ARP

2600, Roland System 100/100M, etc.).

A jumper connector on the back of the 880 is used to

set the Trigger 2 level (Fig. 3). It is set to 5 Volts at the

factory. To change the Trigger 2 level to 12 Volts,

remove the jumper with a pair of tweezers or needle-

nose pliers and move it to the 12 Volt setting. Ensure

there is no power applied to the 880 when changing

the jumper setting.

DIN Socket Ground

Setup

Fig. 4 DIN Ground Lift jumper, back panel

The 880's DIN socket serves as both a MIDI IN

connector and a legacy format DIN Sync connector.

To preven t a ud ibl e gr ou nd lo ops t he M IDI s ta nd ard

employs an optocoupler to isolate MIDI devices from

one another. The DIN Sync standard, however,

requires a ground connection between devices. To

ensure compatibilty with legacy DIN Sync devices, pin

2 is grounded via a jumper on the back of the 880.

Grounding pin 2 of a MIDI IN socket does not conform

to the MIDI electrical standard. If a ground loop is

introduced by MIDI cabling this may be resolved by

changing the jumper to disconnect or 'lift' the pin 2

ground connection (Fig. 4).

DIN Pin 2 grounded (default):

DIN Pin 2 lifted:

Power Supply Ensure that your power supply has sufficient overhead

to handle the current drawn by all of the Eurorack

modules connected to it. When its power supply is

overloaded the 880 will function erratically or not at all.

It is strongly recommended that a professional, high

quality Eurorack power supply be used with the 880.

Do-It-Yourself (DIY) power supplies and unfiltered 'off-

the-shelf' switching power modules may result in

unwanted noise and performance issues.

Basic

Connections 4

Master Output All of the 880's instruments are summed together at

the MASTER OUT jack. The level of each drum voice

in the master out mix is controlled by each instrument's

LEVEL control. When auditioning and recording from

the master output adjust the instrument LEVEL con-

trols to obtain the desired balance of each instrument

in the mix. Use the MASTER VOLUME control to

achieve the desired output level into your monitoring

and/or recording device.

NOTE: The 880 is a clone of a vintage analog design.

You may find the noise floor higher compared to other

contemporary electronic instruments, especially on the

master output.

Instrument Outputs There are five instrument pairs that each share an

output (LC/LT, MC/MT, HC/HT, RS/CL, and CP/MA).

The LEVEL control for these instrument pairs affects

the level of both instruments.

The 880 has 11 individual audio outputs. Connecting

a jack to an instrument's individual output removes that

instrument from the summed MASTER OUT signal.

An instrument's level at its output jack is determined

only by its LEVEL control and is not affected by the

MASTER VOLUME control.

Trigger Outputs Trig ge r O ut pu t 2 m ay al so be s et to pr ovi de a pos it ive

12 Volt pulse required by some vintage equipment.

See Installation and Setup on Page 3 for more details.

The 880 provides two independant, programmable

Tri gg er Ou tp uts for i nter faci ng wi th s yn th esi ze rs and

sequencers. See the Quick Tips section on Page 5 for

details on how to assign any of the instrument triggers

to either of the Trigger Outputs.

Each trigger signal is a positive 5 Volt, 20 millisecond

(ms) pulse suitable for activating most Trigger and

Gate inputs on other equipment.

Sync InThe SYNC IN jack is used to slave the 880's seq-

uencer to an external analog clock pulse. When set as

a SYNC IN slave (see Synchronization, Page 13), the

sequencer will respond to the rising edge of a 5 Volt

clock pulse received on the SYNC IN jack at a rate of

2 Pulses Per Quarter Note (PPQN).

MIDI/Sync The MIDI/SYNC jack is a multi-function DIN connector

used to receive MIDI data and send, or receive DIN

Sync (Sync24) data. Its function is dependent on the

Synchronization Mode (see Synchronization, Page

12).

Quick

Tips 5

This section gives a quick overview of some of the

enhanced features that are specific to the 880. If you

are unfamiliar with how a TR-series step sequencer

Change the MIDI

Channel

The 880's MIDI receive channel is set to Channel 1 by

default. To change the default MIDI receive channel,

use the MODE selector button to select CLEAR mode.

With the sequencer stopped, press and hold both the

SHIFT-WRITE/NEXT key and the ALT key. Use the

STEP buttons to select the MIDI receive channel, from

1 to 16.

Assign the Trigger

Outputs

Alternate the Basic

Variations

The BASIC-VARIATION button toggles between

Variation A and Variation B. To alternate between A

and B press and hold the SHIFT-WRITE/NEXT key

while pressing the BASIC-VARIATION button. To exit

the alternating mode simply press the BASIC-

VARIATION button once.

functions please start on the next page, Control

Descriptions, and refer back to this section once you

are familiar with the 880's step sequencer functions.

Change the

Pattern Bank

Press and hold the ALT key and use the STEP buttons

to select one of the 12 Pattern Banks available.

NOTE: In MANUAL PLAY mode the SHIFT-WRITE/

Change the Rhythm

Pattern While the

Sequencer is

Running

In Pattern Edit Mode (1st PART or 2nd PART) the

current Rhythm Pattern can be changed while the

sequencer is running.

Press and hold both the SHIFT-WRITE/NEXT key and

the ALT key and select the desired Rhythm Pattern

using the STEP buttons.

The currently playing pattern will finish playing and the

newly selected rhythm pattern will begin playing.

NEXT key needs to be used in combination with the

ALT key to access the Pattern Banks.

The 880's two Trigger Outputs can be assigned to any

of the 16 drum voices and the Accent trigger.

With the sequencer stopped, use the MODE selector

button to select MANUAL PLAY. Use the I/F VAR

switch to select Trigger 1 (A) or Trigger 2 (B). Press

and hold the SHIFT-WRITE/NEXT key and the ALT

key. While these keys are held the currently assigned

trigger will be indicated by the Instrument/Track LEDs.

Copy and Paste

a Rhythm Pattern

In Pattern Edit mode (1st PART or 2nd PART), with the

sequencer stopped, select the pattern you wish to

copy. Press and hold the CLEAR button and then

select a new pattern to copy to. Both VARIATION A

and B will be copied to the destination pattern. Any

pattern data in the destination pattern will be

overwritten.

Use the Instrument/Track buttons to select the

instrument you wish to assign to the Trigger Output.

By default Trigger 1 is assigned to the Accent and

Tri gg er 2 is as si gne d to the C ow be ll. Trig ge r

assignments are stored in non-volatile memory for

recall after power off.

Mute an Instrument

Sync to an External

Clock

Copy Variation A to

Variation B

In Pattern Edit mode (1st PART or 2nd PART), with

Variation A set as the current variation, press and hold

the CLEAR button and then press the BASIC-VARIAT-

ION button. The pattern data in Variation A will be

copied to Variation B.

To mu te a n instr ume nt , press a nd h old t he SH IF T-

WRITE/NEXT key and press the Instrument/Track

selector button for the instrument you wish to mute.

Press the selector button again to un-mute.

The 880 may be synced to external MIDI clock, DIN

Sync24 clock or an analog clock pulse on the SYNC

IN jack. Press the AUTO FILL IN selector button while

holding down the SHIFT-WRITE/NEXT key to change

the Synchronization Mode.

Refer to Synchronization on Page 12 for more

information.

Mode Selector

Control

Descriptions

Rhythm Pattern

Programming Modes

Play Modes

Compose Mode

Instrument/Track

Selectors

Tempo Control

Auto Fill In Selector

The PLAY mode allows you to play any of the 12

Rhythm Tracks stored in memory. The Rhythm Tracks

are selected using the INSTRUMENT/TRACK buttons.

The MODE selector control is located in the upper left

corner of the control panel and is used to select

different operations for both programming and playing

the instrument. Pressing the MODE key cycles through

each of the six modes: PATTERN CLEAR,

1st PART, 2nd PART, MANUAL PLAY, PLAY, and

COMPOSE. Holding the SHIFT-WRITE/NEXT key

while pressing the MODE key reverses the direction of

the selection cycle.

The PATTERN CLEAR mode is used to clear patt-

erns from memory so that Rhythm Patterns can be

reprogrammed. The red CLEAR button is used to

activate the CLEAR function while in PATTERN

CLEAR mode. The 1st PART mode is used to pro-

gram the first section of a pattern. Patterns with 16 or

fewer steps can be programmed using just the 1st part

of the pattern programming mode. To create patterns

of up to 32 steps, the 2nd PART mode is used. Patt-

erns are initialized to 16 steps for the 1st part and 0

steps for the 2nd part. The red CLEAR button is used

in combination with the step switches to determine the

number of steps in a pattern. A combination of different

pattern lengths and PRE-SCALE settings allows diff-

erent time signatures to be achieved.

The MANUAL PLAY mode is a performance mode

that allows you to play any of the Rhythm Patterns

stored in memory. Additionally, it offers automatic

switching for intros and fills. Shuffle and instrument

rolls can be used in MANUAL PLAY mode to further

improvise during performance.

Holding the SHIFT-WRITE/NEXT key while pressing

the AUTO FILL IN button changes the context of the

control to set the SYNC MODE. The SYNC MODE

cycles through INTERNAL CLOCK, MIDI IN, DIN

SYNC24 OUT, DIN SYNC24 IN, and SYNC IN modes.

The AUTO FILL IN selector is used to insert Fill In

Rhythm Patterns while playing in MANUAL PLAY

mode. Pressing the AUTO FILL IN selector button

cycles through the six different fill options. The first fill

option is MANUAL which allows Fill In Rhythms to be

inserted manually by pressing the TAP button. Auto-

matic insertion of the Fill In Rhythm is accomplished

with any of the remaining five options: 16, 12, 8, 4 and

2. Automatic insertion occurs every 16th measure,

every 12th measure, every 8th measure, etc.

The Tempo Control sets the tempo of the internal

sequencer. The internal sequencer has a tempo range

of 30 beats per minute (BPM) to 290 BPM.

When the sequencer is stopped the currently selected

pattern's LED will blink in time with the tempo.

When the 880 is slaved to an external clock, the

Tem po C ontr ol kno b b ecom es inac tive.

There are 12 Instrument/Track selector buttons. When

programming Rhythm Patterns these buttons are used

to select a drum voice or Accent to program. From the

left the drum voices are AC (ACCENT), BD (BASS

DRUM), SD (SNARE DRUM), LT/LC (LOW TOM or

LOW CONGA), MT/MC (MID TOM or MID CONGA),

HT/HC (HI TOM or HI CONGA), RS/CL (RIM SHOT

or CLAVES), CP/MA (HANDCLAP or MARACAS), CB

(COWBELL), CY (CYMBAL), OH (OPEN HIHAT), and

CH (CLOSED HIHAT). When two options are avail-

able, you can press the Instrument button a second

time to toggle between the two available instruments.

Drum voices with two instruments can be programmed

independently on different steps of the same pattern.

The drum voice will automatically switch between

instruments on each step.

Holding the SHIFT-WRITE/NEXT key while pressing

an instrument will toggle its MUTE function. The In-

strument/Track selectors are also used to select the 12

memories available for composing Rhythm Tracks in

COMPOSE mode and playing any individual Rhythm

Track in P LAY m od e.

The COMPOSE mode allows any of the Rhythm

Patterns stored in memory to be linked together into a

composition called a Rhythm Track. Each of the 12

Rhythm Tracks can contain a unique sequence of up

to 64 patterns. The Rhythm Track memories can be

cleared using the red CLEAR button. Programming

the sequence of Rhythm Patterns is accomplished

with the STEP buttons and the SHIFT-WRITE/NEXT

key.

Voice Controls

Each drum voice has a LEVEL control at the top of

each group of instrument controls. The LEVEL control

is used to control the level of the drum voice in the

MASTER OUTPUT mix. RIM SHOT/CLAVES, HAND

CLAP/MARACAS, COWBELL, and CLOSED HIHAT

only have a LEVEL control, whereas the other drum

voices have additional controls for adjusting the sound

of the instrument.

The ACCENT LEVEL control sets the amount of

emphasis given to accented steps in a pattern.

Accented steps give emphasis to any drum voices

that are programmed on the same step.

Step Buttons The STEP buttons have different functions depending

on what mode the 880 is in and whether or not the

sequencer is running.

In Rhythm Pattern Programming modes (CLEAR, 1st

PART, 2nd PART) the STEP buttons are used to

select a pattern to clear, play or edit. While the pattern

is playing the STEP buttons are used to program the

steps on which the currently selected drum voice will

play. In combination with the red CLEAR button, the

STEP buttons can be used to set the length of a

Rhythm Pattern.

In MANUAL PLAY mode the first 12 STEP buttons

are used to select one of the 12 BASIC RHYTHMs.

The last 4 STEP buttons are used to select one of the

4 INTRO/FILL INs. When the START/STOP button is

pressed the selected BASIC RHYTHM pattern will

begin to play unless the TAP button is used to

changed the priority to the selected INTRO/FILL IN

pattern. The priority between the BASIC RHYTHM

and INTRO/FILL IN pattern is indicated by their LEDs

flashing.

While holding the SHIFT-WRITE/NEXT key, the

STEP buttons are used to select different SHUFFLE

amounts and ROLL modes.

In combination with the ALT key STEP buttons are

also used to select one of 12 seperate banks of

Rhythm Patterns.

Basic

Variation Button

I/F Variation Button

Shift

Write/Next key

Start/Stop Button

Tap Button

Master Out Volume

Control

Descriptions (cont.)

holding the SHIFT-WRITE/NEXT key. To exit the alt-

ernating mode, press the BASIC VARIATON button to

return to variation A or use SHIFT-WRITE/NEXT + the

BASIC VARIATION button to return to variation B.

A solid LED indicates the current variation playing and

a flashing LED indicates the variation that is waiting to

play once the current measure has finished.

The IF/VAR button is used to select the variation

mode for the INTRO/FILL IN patterns used in

MANUAL mode. Like the BASIC VARIATION

BUTTON it toggles between variation A and variation

B modes. When a INTRO/FILL IN pattern is playing

its variation MODE is indicated by the BASIC

VARIATION LEDs.

In other modes, the IF/VAR button serves as an ALT

key, sometimes in combination with the SHIFT-

WRITE/NEXT key to access alternative functions.

The SHIFT-WRITE/NEXT key is used to access

alternative functions of the other buttons/keys on the

880's front panel. It can be used to MUTE drum

voices, assign the trigger outputs, change SHUFFLE

and ROLL settings, and SYNC behaviour, set the

PRE-SCALE and activate the ALT functions in comb-

ination with the IF/VAR button.

In COMPOSE mode, the SHIFT/WRITE key is used

to advance to the next pattern when creating or editing

Rhythm Tracks.

Starts or stops the internal pattern sequencer. Input

ignored when using an external MIDI or DIN SYNC

source.

In MANUAL PLAY Mode the TAP button is used for

manual insertion of INTROs and FILL INs. It is also

used to manually enter trigger steps for drum voices

during Rhythm Pattern programming. In PLAY and

COMPOSE Modes it can be used to display the

current measure of a Rhythm Track.

Controls the overall output volume of the summed

drum voices available a the MASTER OUT jack.

The BASIC VARIATION button is used to toggle

between the two variation modes, A and B. Each

Rhythm Pattern consists of two variation modes of

one measure each that can be played independently

or alternately.

Pressing the BASIC VARIATION button will toggle

between modes A and B. To enter the A-B alternating

mode, press the BASIC VARIATON button while

Program

a Rhythm Pattern

Writing

Rhythm

Patterns 8

Program

the 2nd Part

Setting

the Pre-Scale

Add Shuffle

Press the MODE selector button to select PATTERN

CLEAR mode (first LED on the left). Using the STEP

buttons, select the pattern you wish to clear. Press the

red CLEAR button. The PATTERN CLEAR LED will

blink rapidly to indicate that the pattern is being cleared

from memory. A cleared pattern has 16 steps in 4/4

time.

Press the MODE selector button to select 1st PART.

Select the instrument you wish to program using the

Instrument selector buttons. Press START/STOP to

start the sequencer. The STEP LEDs will light in seq-

uence as each step of the pattern is triggered. Use the

STEP buttons to select the steps on which the current

instrument will be triggered. Active steps for the curr-

ently selected instrument are indicated by solidly lit

STEP LEDs.

Select a different instrument and program the steps on

which you want it to trigger. Alternatively, press the TAP

button wherever you want to program the instrument in

the pattern. The instrument will be programmed to the

nearest step. To edit any incorrectly entered steps

simply press the button for the step you wish to edit to

We will now program a Rhythm Pattern using both the

1st and 2nd Parts to create a 32 step pattern. With the

sequencer stopped, select the desired pattern number.

Ensure the BASIC VARIATION is set to A, clear the

pattern and set the mode to 1st PART. Start the seq-

uencer and program a Rhythm Pattern using the inst-

rument selector buttons and the step switches. When

you are finished programming the 1st PART, set the

mode to 2nd PART. The sequencer will continue to

play the 1st Part because the cleared pattern has only

16 steps. While pressing and holding the CLEAR but-

ton select step #16. The 1st PART will now play and

then the step LEDs will blink while the 2nd PART plays.

Notice that the 1st PART and 2nd PART LEDs next to

the START/STOP button light to indicate which part is

currently playing. Program a pattern into the 2nd

PART to complete your 32 step pattern.

Alternatively, it is possible to layer the steps program-

med into the 2nd PART onto the 1st PART. When lay-

ered, the steps in the 2nd PART will be triggered

inbetween the steps of the 1st PART. This layering

mode is active only when the 2nd PART is set to 0

steps. Simply clear a pattern, program the 1st PART,

set the mode to the 2nd PART and progam a layer that

will play inbetween the steps of the 1st PART. In layer-

ing mode, the sequencer LEDs will not blink while the

2nd PART is edited.

The 2nd PART can be toggled between a layer and an

extension of the 1st PART. To extend the 1st PART

with the 2nd PART, press and hold the CLEAR button

and select the desired pattern length using STEP

buttons #1 to #16. To activate layering mode again,

press and hold the CLEAR but-ton and press step #1

twice. This will reset the 2nd PART to 0 steps and

clear any steps that were programmed in the 2nd

PART.

The scale bars on the panel above the STEP buttons

indicate the PRE SCALE. Changing the PRE SCALE

changes the number of internal clock pulses that are

counted between steps. Different PRE SCALE set-

tings in combination with different pattern lengths allow

the creation of a variety of different time signatures. By

default, patterns are cleared to PRE SCALE 3 and 16

steps (4/4 time).

The PRE SCALE can be changed while editing the

1st or 2nd PART and the changes are saved in

memory with the current pattern.

To set th e PR E S CAL E, t he se qu enc er mu st b e

running and the mode must be set to 1st PART or 2nd

PART. Press and hold the SHIFT-WRITE/NEXT key

and then press the CLEAR button to select the desired

PRE SCALE setting indicated by the 4 LEDs next to

the scale bars.

The 880 has a shuffle feature that alters the timing of

the odd steps in a Rhythm Pattern. Six levels of shuffle

are available. While the sequencer is running, hold

down the SHIFT-WRITE/NEXT key and select the

SHUFFLE AMOUNT using the first 6 STEP buttons.

Step #1 indicates no shuffle and steps #2 to #6 apply

increasing amounts of shuffle. In Rhythm Pattern

Programming mode, the SHUFFLE AMOUNT is

saved with the pattern. In MANUAL PLAY and PLAY

modes, the SHUFFLE AMOUNT can be changed

during pattern playback as part of the performance,

but SHUFFLE AMOUNT changes are not saved to

memory in these modes.

When a SHUFFLE AMOUNT change is made in

MANUAL PLAY or PLAY modes, that change will

override the SHUFFLE AMOUNT that is read from a

pattern's memory. Turning off shuffle (Step #1) will

restore the SHUFFLE AMOUNT that is stored with the

pattern in memory.

toggle off the instrument. Continue to select and

program instruments until you are satisfied with the

pattern you have created, then stop the pattern by

pressing START/STOP.

Press the BASIC-VARIATION button to select BASIC

VARIATION B mode. Set the MODE selector to

PATTERN CLEAR. Press the CLEAR button to clear

the B mode pattern. Now start the sequencer and

program a second Rhythm Pattern for B mode.

While the B variation pattern is playing, press the

BASIC-VARIATION button whle holding the SHIFT-

WRITE/NEXT key. The B LED will stay lit and the A

LED will flash indicating that the B pattern is playing

and the A pattern will play next. The two variatons will

now alternate, with the current variation's LED remain-

ing solid while the waiting variation's LED blinks.

Pressing the BASIC-VARIATION button exits the

alternating mode and returns to variation A. To exit the

alternating mode to variation B, press the BASIC-

VARIATION button while holding the SHIFT-WRITE/

NEXT key.

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