Yamaha FB-01 Bedienungsanleitung

Andere Handbücher für FB-01

2

Inhaltsverzeichnis

Andere Yamaha Musikequipment Handbücher

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YAMAHA

FM

SOUND

GENERATOR

SERVICE

MANUAL

■

CONTENTS

Specifications

.

2

Functions

&

Features

.

3

Circuit

Operation

.

4

FB-01

Memory

Map

&

I/O

Fort

Map

Operational

Check

by

Utilizing

the

Test

Program

.

Description

on

MIDI

.

MIDI

Receive

Data

Format

1

(Channel

message.

System

message)

.

\

\

MIDI

Receive

Data

Format

2

(System

Exclusive

message)

.

]2

Other

System

messages

.

j4

Parameter

List

.

]7

MIDI

Transmit

Data

Format

.

jg

Parts

List

0085

I

9

SINCE

188;

@

YAMAHA

NIPPON

GAKKI

CO..

LTD.

HAMAMATSU.

JAPAN

2.1K-822

©Printed

in

Japan

'86.9

IMPORTANT

NOTICE

This

manual

has

been

provided

for

the

use

of

authorized

Yamaha

Retailers

and

their

service

personnel.

It

has

been

assumed

that

basic

service

procedures

inherent

to

the

industry,

and

more

specifically

Yamaha

Products,

are

already

known

and

understood

by

the

users,

and

have

therefore

not

been

restated.

WARNING:

Failure

to

follow

appropriate

service

and

safety

procedures

when

servicing

this

product

may

result

in

personal

injury,

destruction

of

expensive

components

and

failure

of

the

product

to

perform

as

specified.

For

these

reasons,

we

advise

all

Yamaha

product

owners

that

all

service

required

should

be

performed

by

an

authorized

Yamaha

Retailer

or

the

appointed

service

representative.

IMPORTANT:

The

presentation

or

sale

of

this

manual

to

any

individual

or

firm

does

not

constitute

authorization,

certification,

recognition

of

any

applicable

technical

capabilities,

or

establish

a

principle-agent

relationship

of

any

form.

The

data

provided

is

believed

to

be

accurate

and

applicable

to

the

unit(s)

indicated

on

the

cover.

The

research,

engineering,

and

service

departments

of

Yamaha

arc

continually

striving

to

improve

Yamaha

products.

Modifications

are,

therefore,

inevitable

and

changes

in

specification

are

subject

to

change

without

notice

or

obligation

to

retrofit.

Should

any

discrepancy

appear

to

exist,

please

contact

the

distributor’s

Service

Division.

WARNING:

Static

discharges

can

destroy

expensive

components.

Discharge

any

static

electricity

your

body

may

have

accumulated

by

grounding

yourself

to

the

ground

buss

in

the

unit

(heavy

gauge

black

wires

connect

to

this

buss).

IMPORTANT:

Turn

the

unit

OFF

during

disassembly

and

parts

replacement.

Recheck

all

work

before

you

apply

power

to

the

unit.

This

product

uses

a

lithium

battery

for

memory

back-up.

WARNING:

Lithium

batteries

are

dangerous

because

they

can

be

exploded

by

improper

handling.

Observe

the

following

precautions

when

handling

or

replacing

lithium

batteries.

—

Leave

lithium

battery

replacement

to

qualified

service

personnel.

—

Always

replace

with

batteries

of

the

same

type.

—

When

installing

on

the

PC

board,

solder

using

the

connection

terminals

provided

on

the

battery

cells.

Never

solder

directly

to

the

cells.

Perform

the

soldering

as

quickly

as

possible.

—

Never

reverse

the

battery

polarities

when

installing.

—

Do

not

short

the

batteries.

—

Do

not

attempt

to

recharge

these

batteries.

—

Do

not

disassemble

the

batteries.

—

Never

heat

batteries

or

throw

them

into

fire.

H

SPECIFICATIONS

CPU

/4)D70008

AC-6

{equivalent

of

the

Z-80B

C-MOS)

CLOCK

6MHz

(±0.5%)

WAIT

3

or

4

WAIT

cycles

are

inserted

when

accessing

the

LCD

INTERRUPT

Only

MODE

1

used

(NMI

unused)

INTERRUPT

is

generated

from

USART

(^pD71051)

&

OPP

(YM2164)

RESET

POWER

ON

RESET

only

MEMORY

8

x

8

KBIT

S-RAM

x

2

16

KBYTES

(150ns)

All

provided

with

battery-backup

32

KBYTES

Program

ROM

(150ns)

Be

sure

to

use

1

50ns

speed

MEMORY

to

be

compatible

with

the

CPU

access

speed.

INPUT

SWITCH

Tact

SW

(Stroke

1mm!

)

X

8

SW

name

DATA

BUS

SYSTEM-SETUP

(DO)

INST-SELECT

(D1)

INST-ASSIGN

(D2)

INST-FUNCTION

(D3)

VOICE-FUNCTION

(D4)

VOICE-SEL

(D5)

-

1/No

(D6)

+

1/Yes

(D7)

1-...

-

SYSTEM

—

INSTSEL

-l/NO

-

+I/Yes

INST

ASIGN

INST

FUNC

VOICE

FUNC

VOICE

SEL

_

—

SOUND

SOURCE

FM

sound

source

utilizes

the

OPP

(YM2164)

and

the

DAC

(YM3012)

CLOCK

4MHz

(±0.2%)

Amp.

L-R

2ch

Amplification

9.2dB

(1kHz)

Frequency

response

10Hz

-16kHz

(-3dB)

Q

0.72

Residual

noise

0.4mV

or

less

(RMS

AC

voltmeter

4Hz

to

500kHz)

Power

ON/OFF

noise

10mV/3mV

(RMS

AC

voltmeter

4Hz

to

500kHz)

L/R

gain

difference

Within

0.6dB

Output

level

-1.7dBm/1kHz

(Sine

wave

1

tone/ATT

OdB)

Output

impedance

IkQ/lkHz

D/A

conversion

sample

frequency

62.5kHz

MIDI

USART

^pD71051C

PHOTO

COUPLER

PC910

MIDI

transfer

rate

31.25kHz

±0.1%

MIDI

THRU

DELAY

Leading

200ns

(TYP)

Trailing

1

50ns

(TYP)

CONNECTOR

DIN5Px3

(MIDI-IN,

MIDI-THRU,

MIDI-OUT)

DISPLAY

LCD

16

characters

per

1

line

(5x7

dots/1

char)

NEGATIVE

TYPE

1/16

DUTY

Optimum

visual

angle:

Vertical

direction

20°

against

horizontal

plane

Horizontal

direction

0°

against

vertical

plane

Visual

angle

range

:

Optimum

vision

±20°

in

vertical

direction

Optimum

vision

±30°

in

horizontal

direction

BACK

LIGHT

24

chip

LED

(Working

current

180mA)

Color

ORANGE

LCD

CONTROLLER

HD44780A

or

equivalent

-j-

BATTERY

BACKUP

Backup

battery

lithium

battery

(160Ah)

Backup

period

5

years

after

Backup

SW

ON

Backup

ON-OFF

SW

.

POWER

SUPPLY

Type

Series

type

+

3-terminal

regulator

Primary

side

specifications

±10%

of

rated

input

50Hz/60Hz

Electricity

consumption

9W

Secondary

side

specifications

+

5V

(for

Digital)

Accuracy

±5%

Electric

current

400mA

±

5V

(for

Analog)

Accuracy

±

5%

Electric

current

100mA

GND

+

5V

(for

Digital)

±

5V

(for

Analog)

FLOAT

mutually

GENERAL

SPECIFICATIONS

Conditions

for

use

Product

specifications

Catalogue

specifications

Temperature

0°C~40°C

0°C-35°C

Humidity

20%

-

90%

Temperature

for

storage

Product

specifications

|

Catalogue

specifications

Temperature

-

20°C

~

60°C

-

15°C

-

60°C

Humidity

10%

-90%

-

10%-90%

Dimensions

218mm(W)

x

48mm(H)

x

274mm(D)

Weight

Accessory

List:

(2)

RCA

to

1/4

Phone

adaptors

(1)

MIDI

Cable

(1m)

-

3.2

feet

(1)

Instruction

manual

(1)

Warranty

Card

2

■

FUNCTIONS

&

FEATURES

(Refer

to

the

instruction

manual

for

handling.)

Instrument

No.

of

Instruments

No.

of

tones

generated

MIDI

channel

System

No.

Note

range

Up

to

8

instruments

can

be

specified

(No.O

to

No.7)

The

FB-01

can

generate

a

maximum

of

8

tones

or

notes.

If

only

one

instrument

is

selected,

it

can

be

assigned

to

have

a

maximum

of

8

notes.

However,

if

two

or

more

instruments

are

selected,

then

the

total

8

note

capability

is

split

be¬

tween

the

various

instruments.

For

each

part,

one

MIDI

channel

number

from

#

0

to

#15

can

be

assigned.

Separate

from

MIDI

channels,

each

FB-01

can

be

assigned

system

numbers

from

1

to

16.

Thus,

each

FB-01

can

be

controlled

independently,

even

though

several

FB-01

units

are

used

in

the

total

system.

Acceptable

Note

Range

C2-G8

Nominal

Note

Range

8

octaves.

Voice

Number

of

preset

voices

:

240

Number

of

voices

which

can

be

defined

by

the

user:

96

(Backed

up

by

battery)

Basic

voice

data

is

interchangeable

with

SFG01

and

SFG05.

The

notes

can

be

assigned

to

any

instrument

(part).

A

controller

and

special

software

(with

MIDI

capability)

are

necessary

to

produce

voices.

Effects

(Effects

settings

are

possible

for

each

instrument

(part).l

Sound

volume

PAN

Detune

Transpose

128

steps

L,

LR,

R

±

100

cent

Max.

±

2

octaves

Max.

Special

Effects

Portamento

time

128

steps

Pitch

bender

range

1

octave

Max.

Poly/mono

mode

switching

possible.

AMD

control

After

touch,

modulation

wheel,

breath

control

or

foot

control

can

be

selected.

PMD

control

After

touch,

modulation

wheel,

breath

control

or

foot

control

can

be

selected.

•These

special

effects

can

be

set

either

for

each

voice

or

for

each

part.

Configurations

Configurations

included

4

types

Configurations

so

that

the

USER

can

define

16

types

(backed

up

by

battery)

"Configuration"

is

a

general

te/m

for

a

series

of

parameters

such

as

various

modes

and

numerical

values

which

the

FB-01

utilizes

to

generate

tones.

Combine

Function

When

the

combine

mode

is

ON,

all

voice

function

data

such

as

bender

amount

and

portamento

time

are

recalled

when

a

voice

is

loaded.

When

the

combine

mode

is

OFF,

the

voice

function

data

is

NOT

recalled

with

the

loaded

voice.

Configuration

Data

Listing

Listed

in

the

table

below

is

the

data

of

configuration

No.

1

7

which

is

one

of

the

preset.

The

FB-01

has

a

total

of

20

types

of

configuration

data,

namely,

4

types

which

are

preset

(in

ROM)

and

16

types

(with

battery

backup)

for

the

user

(in

RAM).

CONFIGURATION

NUMBER

1

7

NAME

1

single

VOICE

FUNCTION

COMBINE

ON

KEY

CODE

NUMBER

RECEIVE

MODE

ALL

INSTRUMENT

NUMBER

1

2

<

5

6

7

8

INST

ASSIGN

MIDI

CHANNEL

1

2

3

A

5

6

7

8

NUMBER

OF

NOTES

8

0

0

0

0

0

0

0

—

—

'

'

~

1

"

KEY-CODE

NUMBER

LIMIT/L

02

02

02

02

02

02

02

02

KEY-CODE

NUMBER

LIMIT/H

G8

ES

G8

G8

G8

G8

G8

G8

VOICE

SELECT

VOICE

NUMBER

1

1

1

1

1

1

1

1

VOICE

BANK

NUMBER

3

3

3

3

3

3

3

3

INST

FUNCTION

OUTPUT

LEVEL

127

'

127

127

127

127

127

127

127

OCTAVE

TRANSPOSE

0

0

0

mm

0

0

0

0

DETUNE

0

0

0

0

0

0

0

0

STEREO

L

+

R

L+R

L+R

L+R

L+R

LFO

ENABLE

ON

ON

ON

ON

ON

ON

ON

ON

VOICE

FUNCTION

PITCHBENDER

RANGE

2

2

2

2

2

2

2

2

PORTAMENTO

TIME

0

0

0

0

0

0

0

i

0

POLY/MONO

POLY

POLY

POLY

POLY

POLY

POLY

POLY

POL*

INPUT

CONTROLLER

(PMD)

WHEEL

WHEEL

WHEEL

WHEEL

WHEEL

■

CIRCUIT

OPERATION

1.

CPU

Clock

Circuit

A

1

2MHz

crystal

is

utilized

in

the

clock

generation

circuit

to

provide

the

clock

signal

for

the

CPU

and

sound

source.

A

6MHz

clock

signal

is

applied

to

the

clock

terminal

(pin

6

)

of

the

CPU

via

IC14,

a

divide

by

2

circuit.

2.

Sub-clock

Circuit

A

4MHz

crystal

is

utilized

in

the

clock

generation

circuit

to

provide

the

clock

signal

for

the

OPP,

DAC,

and

MIDI

cir¬

cuitry.

It

is

divided

down

to

500KHz

by

IC9

(74HC161)

and

applied

to

the

USART

(

M

PD71051)

and

OPP

(YM2164).

3.

Reset

Circuit

POWER

ON

RESET

is

generated

by

means

of

the

reset

cir¬

cuit

consisting

of

C87,

R37,

R72

and

ZD1.

The

circuit

is

also

connected

to

the

Chip

Enable

(CE)

signal

generation

circuit

for

the

RAM

battery

backup

function

so

that

the

RAM

data

is

protected

at

power

OFF.

4.

CPU,

ROM,

and

RAM

The

CPU

operates

on

the

basis

that

the

system

clock

is

about

6MHz.

For

this

reason,

the

access

time

of

the

bus

connecting

elements

such

as

ROM

and

RAM

must

be

faster

than

1

50nS.

The

ROM,

from

0000H

to

7FFFH,

is

for

the

voice

data

and

program

area

as

well

as

for

configuration

data

area.

The

RAM,

from

8000H

to

BFFFH,

is

used

as

the

area

for

storing

various

types

of

register

and

stack

information.

The

RAM

memory

is

also

utilized

for

storing

the

Configura¬

tion

Dat^,

and

the

User

Memory

Data.

This

RAM

area

is

battery

backed-up

in

order

to

save

or

hold

the

saved

data.

■

SYSTEM

BLOCK

DIAGRAM

IN

THROUGH

OUT

AUDIO

PRE

AMPUFIER

5.

The

Sound

Source

Circuit

This

circuit

consists

of

a

4-operator,

8-voices

FM

sound

source

(OPP

YM2164)

and

the

YM3012

DAC.

The

FM

sound

source

circuit

operates

according

to

the

data

from

the

CPU.

There

are

two

channels

for

the

audio

output

and

they

can

produce

different

voices.

6.

Switch

Scan

Circuit

This

circuit

scans

the

ON/OFF

states

of

the

8

switches

by

means

of

1C

1

8

(74HC244)

which

is

directly

connected

to

the

CPU

data

bus.

7.

MIDI

Circuit

The

USART

(

M

PD71051:

8251

compatible)

is

used

as

the

Transmitting

and

Receiving

device

of

the

MIDI

circuit.

It

conforms

to

the

MIDI

standard

VI.0.

■

FB-Ol

MEMORY

MAP

&

I/O

PORT

MAP

MAIN

MEMORY

MAP

FFFFHI

C000HL

64kbits

X

2

(16kbyte)

S

RAM

4000H

256kbits

FB-01

ROM

AREA

32kbytes

I/O

AREA

MAP

FFH

40H

30H

20H

10H

LCD

I/O

Panel

SWITCH

USART

I/O

OPP

I/O

OPP

I/O

MAP

01H

00H

CPU

READ

CPU

WRITE

STATUS

DATA

Register

Address

USART

I/O

MAP

1

1H

1

OH

CPU

READ

CPU

WRITE

STATUS

I

Control

Word

DATA

1

DATA

Panel

SWITCH

I/O

MA

P

9nM

|x>

e

|Dl|D2|E3|I>4|D5

|i>6|P7[

~

3

1H

30H

LCD

I/O

MAP

CPU

READ

CPU

WRITE

DATA

DATA

•

Busy

Flag

Adrs

counter

Instruction

Register

BIT

Switch

Name

D7

+1

/Yes

D6

-1/

No

D5

Voice

Select

D4

Voice

Function

D3

Inst

Function

D2

Inst

Assign

D

1

Inst

Select

DO

System

set

up

■

OPERATIONAL

CHECK

BY

UTILIZING

THE

TEST

PROGRAM

Test

Mode

Entry

Before

executing

the

Test

Mode

or

a

repair

save

the

user

in¬

formation,

all

data

stored

in

the

S-RAM

will

be

erased

when

the

Test

Mode

is

activated.

Depress

and

hold

the

"SYSTEM

SET

UP",

"INST

SELECT"

and

"DATA

ENTRY

-

1/NO".

Switches

on

the

front

panel

while

turn

ON

the

POWER

switch,

and

the

test

program,

starts

operating.

Test

data

is

written

in

the

S-RAM

memory

area

which

is

from

8000

to

BFFFH

(indicated

as

FFFFH).

When

this

process

is

complete

"S-RAM

WRITE

END"

is

displayed,

which

means

that

the

data

for

the

backup

circuit

check

has

been

written

in

the

S-RAM.

TEST

MENU

MODE

Pressing

the

"VOICE

SELECT"

switch

after

the

"S-RAM

WRITE

END"

message

is

displayed

sets

the

TEST

menu

mode.

The

"VOICE

SELECT"

switch

is

also

used

when

set¬

ting

the

mode

back

to

the

TEST

menu

mode

from

other

TEST

mode

routines.

Once

the

mode

is

set

to

the

TEST

menu,

the

message

"

=

=

IFB

TEST

=

="

will

be

displayed

on

LCD.

Battery-backup

function

&

S-RAM

check

1.

Turn

ON

the

battery

backup

switch.

2.

Press

the

proper

switch

to

set

to

TEST

MODE.

3.

If

the

S-RAM

doesn't

have

the

test

data

written

in,

writing

of

the

prescribed

data

starts

automatically.

4.

Upon

completion

of

writing

the

message

"S-RAM

WRITE

END"

i^

displayed.

(Press

the

"VOICE

SELECT"

key

to

return

to

the

menu.)

5.

Turn

OFF

the

power

and

wait

for

two

hours.

6

.

Turn

ON

the

power

again,

set

to

the

TEST

mode

and

check

that

"S-RAM

CHECK

OK!"

message

is

displayed.

When

turning

ON

the

power,

be

sure

to

start

in

the

TEST

mode.

If

having

started

in

the

NORMAL

mode,

repeat

this

pro¬

cess

from

above

step

2.

If

the

data

in

S-RAM

has

been

erased,

the

prescribed

data

is

automatically

written

in.

However,

if

"S-RAM

WRITE

END"

is

not

displayed

after

the

comparative

check,

it

means

that

the

S-RAM

related

part

is

defective

and

the

check

after

this

will

become

ineffective.

LCD

Check

1.

Press

the

proper

switches

to

enter

the

TEST

mode.

2.

Press

the

"VOICE-SEL"

switch

to

select

the

TEST

menu

mode

the

following

message

should

be

displayed

"

=

=

IFS

TEST

=

=".

3.

Press

the

"SYSTEM"

switch

to

select

the

LCD

TEST

mode.

4.

Check

to

make

sure

that

LCD

displayed

characters

as

shown

in

Table

1

which

will

increment

from

COHto

FFh

D

uring

each

increment

16

characters

are

displayed

at

a

time.

5.

To

stop

the

sequence

and

display

routine

of

16

characters

press

the

VOICE

FUNC

switch,

and

the

display

will

stop

temporarily.

6

.To

exit

the

LCD

display

routine,

press

the

SYSTEM

switch.

7.

As

a

final

step,

check

to

make

sure

that

the

CHARACTER

GENERATE

RAM

display

appears

as

shown

in

the

figure.

8

.

Also,

check

that

the

color,

contrast,

visual

angle

and

visual

angle

range

are

appropriate.

CPP

TIMER

Test

1.

Press

the

specified

switch

to

increment

to

the

TEST

menu

mode.

2.

Press

"-

1/NO"

switch

to

advance

to

the

TIMER

TEST

PROGRAM.

3.

Check

to

make

sure

that

the

"TIMER

OK!"

message

is

displayed.

MIDI

Function

1.

Prepare

two

FB-01

standard

units

(Standard

unit

is

a

FB-01

unit

that

is

known

to

be

functioning

correctly).

2.

Connect

them

as

shown

in

Fig.2

by

using

the

MIDI

cable

included

in

the

package.

3.

Press

the

specified

switch

to

increment

to

the

TEST

menu

mode.

4.

Press

the

INST

SEL

switches

of

the

standard

units

(j)

and

(2)

in

Fig.2

to

advance

to

the

MIDI

TEST

mode.

(UART

MIDI

CHECK)

5.

Press

the

INST

SEL

switch

of

the

unit

being

tested

to

ad¬

vance

to

the

MIDI

TEST

mode.

6

.

Check

to

make

sure

that

after

a

few

seconds,

the

"MIDI

OK!"

message

is

displayed

on

all

three

units.

AMP

Characteristics

1.

Terminate

both

L

and

R

terminals

with

47KQ

resistors.

2.

Press

the

specified

switch

to

advance

to

the

TEST

menu

mode.

3.

Press

the

+

1/Yes

switch

to

run

the

OPP

SOUND

CHECK

PROGRAM.

4.

Press

the

-

1/No

switch

to

initiate

the

output

of

a

1kHz

TEST

signal.

5.

Connect

a

frequency

counter

to

either

L

or

R

terminal

and

check

that

frequency

is

within

1000Hz

±

1Hz.

6

.

Using

an

AC

voltmeter

(level

meter

Model

M-1

74A

of

NF

make

or

equivalent),

check

to

make

sure

that

the

FLAT

characteristic

is

within

±

0.3dB

of

the

specified

value

and

that

the

level

difference

between

L

and

R

is

within

0.6.dB.

7.

Using

an

oscilloscope,

check

to

make

sure

that

the

waveform

is

not

distorted

or

clipped

from.

8

.

Using

a

distortion

meter,

check

to

make

sure

that

the

distortion

factor

is

within

0.5%.

9.

Press

SYSTEM,

INST

SEL,

-1/NO,

+

1/YES,

INST

ASSIGN

and

INST

FUNC

switches

one

by

one

continuous¬

ly

and

check

that

the

reading

of

the

AC

voltmeter

is

within

±

0.3%

of

the

specified

value.

10.

Turn

the

power

ON

and

OFF,

and

check

that

the

AC

voltmeter

reading

is

less

than

lOmV

then.

11.

Check

to

make

sure

that

the

residual

noise

is

less

than

0.5mV

in

the

TEST

menu

mode.

12.

With

the

same

settings

as

specified

in

step

No.6,

add

a

IkQ

to

the

load

resistor

and

check

that

the

output

level

changes

to

one

half

the

original

level.

(Fig.

1)

LCD

Pattern

Display

Character

Pattern

Table

(Table

1)

^\High

order

Low

bl

'

00

order

4

bit^\

XXX

X0000

1

m

1

0011

0100

0101

0110

0111

101

XXX

X000I

XXX

X00I

X

X

X

X00I

I

X

X

X

X

0100

XXX

X

0101

XXXXOIIO

XXXXOIII

X

X

X

X

1000

X

X

X

X

1001

XXXXI0I0

X

X

X

X

101

I

X

X

X

X

I

100

X

X

X

X

I

X

X

X

X

I

I

I

X

X

X

X

I

I

I

I

Connection

for

MIDI

Function

Test

MIDI

cable

(Unit

being

tested)

(Standard

unit

©

)

(Standard

unit

©

)

Connection

diagram

for

MIDI

Function

Test

(Fig.2)

A

"Standard

unit"

is

defined

as

a

properly

functioning

FB-01.

Three

FB-01

units

are

required

if

the

system

channel

test

is

to

be

performed.

FM

Power

Source

(OPP:

YM2164)

and

D/A

(YM3012)

Block

Diagram

DAC

INTERFACE

D-GND

+

5V

Boot

procedure

Power

ON

I

▼

Wait

for

S

RAM

to

be

initialized.

Panel

switch

scanning

RAM-ID

No.

veri

fication

yesT^

Initialize

OPP

Initialize

UART

Wait

for

static

RAM

Ready.

(Confirm

at

8000H

and

BFFFH

addresses.)

Panel

Switch

scanning

Are

only

(system)

(INST

#

)

and

1-1)

pressed?

valid

?

Start

TEST

program.

Start

up

the

Diagnostic

(TEST)

program.

Initialize

battery

backup

area.

Initialize

OPP

•Start

iRQ

(timer

A.

B)

MAIN

LOOP

MIDI

processing

Panel

switch

processing

(IRQ)

/

RXRDY

(MIDI/IN)

IK

byte

/

Timer

B

(Switch)

1

byte

/

Timer

A

(

•Acti

\

*Port

Active

sensing

measurement

Portamento

treatment

/

TxRDY

(MIDI/OUT)

256

byte

Initialize

UAPT

•Start

iRQ

(RX

RDY)

After

the

power

is

turned

ON,

the

FB-01

is

initialized

by

the

(A'

routine,

and

then

the

MAIN

LOOP

which

is

the

(b)

routine

waits

for

the

input

and

executes

each

command

according

to

the

function

that

was

activiated.

Enable

Interrupt

Request

configuration.

(OPP

erased)

Initialize

LCD

and

switch

panel.

Ready

message

displayed

(Wait

for

3

seconds.)

Start

MIDI

receive

and

panel

switch

scanning.