Alesis DATADISK User Manual

4.5 (2)

ALESIS

Data Disk

Reference Manual

TABLE OF CONTENTS

 

INTRODUCTION ...............................................................................................

2

FEATURES................................................................................................................

2

HOW TO USE THIS MANUAL ...................................................................................

3

SECTION 1

 

DATADISK QUICK START...............................................................................

4

TO FORMAT A DISK .................................................................................................

4

RECEIVING ONE MIDI DATA FILE FOR STORAGE.................................................

4

RECEIVING MULTIPLE MIDI DATA FILES FOR STORAGE.....................................

4

SENDING A SINGLE STORED FILE .........................................................................

5

SENDING MULTIPLE STORED FILES ......................................................................

5

SECTION 2

 

DESCRIPTION OF CONTROLS .......................................................................

6

FRONT PANEL..........................................................................................................

6

3 1/2" DISK DRIVE ........................................................................................

6

LCD DISPLAY ...............................................................................................

6

SCROLL........................................................................................................

6

NAME............................................................................................................

6

RECEIVE ......................................................................................................

6

SEND ............................................................................................................

6

DELETE ........................................................................................................

6

BACKUP .......................................................................................................

7

DO/YES.........................................................................................................

7

REQUEST.....................................................................................................

7

INFO .............................................................................................................

7

MIDI ..............................................................................................................

7

FORMAT .......................................................................................................

7

POWER ........................................................................................................

7

BACKPANEL .............................................................................................................

7

MIDI IN..........................................................................................................

8

MIDI OUT ......................................................................................................

8

POWER ........................................................................................................

8

DATADISK FRONT AND BACK PANEL ....................................................................

9

SECTION 3

 

INTERFACING DATADISK...............................................................................

10

DATADISK CONNECTED TO A SINGLE MIDI DEVICE............................................

10

HANDSHAKING ............................................................................................

10

DATADISK USED TO STORE HR-16/MMT-8 SEQUENCES.....................................

12

DATADISK IN A MORE COMPLEX MIDI SETUP ......................................................

13

SECTION 4

 

DATADISK FUNCTIONS ..................................................................................

14

THEORY OF OPERATION ........................................................................................

14

SYSTEM EXCLUSIVE...................................................................................

14

RECEIVE MODES.........................................................................................

14

SOFTWARE FUNCTIONS.........................................................................................

15

RECEIVE MIDI DATA FUNCTION.................................................................

16

RECV ONE SYSEX ..........................................................................

16

RECV MULT SYSEX.........................................................................

16

SEND MIDI DATA FUNCTIONS ....................................................................

16

SEND FILE XXXXXX YYYYYY ZZZZZZZZ .......................................

16

SEND ALL FILES..............................................................................

16

DELETE FILE FROM DISK FUNCTION ........................................................

17

DEL NNNKXXXXXX YYYYYY ZZZZZZZZ ............................

17

DELETE ALL FILES..........................................................................

17

DISK BACKUP FUNCTIONS.........................................................................

17

BACKUP XXXXXX YYYYYY ZZZZZZZZ ...........................................

17

BACKUP ALL FILES .........................................................................

18

BACKUP TO MIDI.............................................................................

18

REQUEST FUNCTION..................................................................................

18

REQUEST SAMPLE DUMP XX ........................................................

18

REQUEST SYSEX FOR YYYYYY ....................................................

18

DISK INFO FUNCTION .................................................................................

19

XX FILES = ZZZ% YYY Kbytes free..................................................

19

NNNNN XXXXXX YYYYYY ZZZZZZZZ .............................................

19

SOFTWARE VERSION ....................................................................

19

MIDI FUNCTIONS .........................................................................................

19

MIDI ECHO.......................................................................................

19

RCV PROGRAM CHANGE ...............................................................

20

FORMAT DISK FUNCTION...........................................................................

20

NAME FILE FUNCTION ................................................................................

20

RENAME XXXXXX YYYYYY ZZZZZZZZ...........................................

20

SELECT CHARACTER .....................................................................

20

DISK STATUS AND INFO MESSAGES.....................................................................

20

NO DISK IN DRIVE .......................................................................................

21

DISK UNFORMATTED..................................................................................

21

DISK WRITE PROTECTED...........................................................................

22

DISK EMPTY.................................................................................................

22

DISK FULL ....................................................................................................

22

OPERATION ABORTED ...............................................................................

22

DUPLICATE FILE NAME...............................................................................

23

MAXIMUM NUMBER OF FILES ....................................................................

23

NOT ENOUGH DISK SPACE ........................................................................

23

MIDI OVERFLOW TRY RECV MULT ............................................................

23

ERROR IN SYSEX ERROR ON DISK ...........................................................

23

TARGET UNIT NOT RESPONDING .............................................................

24

SECTION 5

 

OPERATION .....................................................................................................

25

TO FORMAT A DISK .................................................................................................

25

TO RECEIVE A FILE .................................................................................................

26

TO RECEIVE MULTIPLE FILES ................................................................................

27

TO REQUEST A DUMP.............................................................................................

28

PRODUCT SPECIFIC DUMP REQUEST...................................................................

29

TO RENAME A FILE..................................................................................................

30

TO SEND A FILE .......................................................................................................

31

TO SEND ALL FILES.................................................................................................

32

TO DELETE (ERASE) A FILE FROM DISK ...............................................................

33

TO DELETE (ERASE) ALL FILES FROM DISK .........................................................

34

TO SET MIDI ECHO ..................................................................................................

35

TO SET UP A MIDI PROGRAM CHANGE .................................................................

35

TO DISPLAY AVAILABLE DISK SPACE....................................................................

36

TO DISPLAY FILE INFORMATION............................................................................

36

TO BACKUP A FILE ..................................................................................................

37

TO BACKUP AN ENTIRE DISK .................................................................................

39

TO BACKUP AN ENTIRE DISK OVER MIDI TO ANOTHER DATADISK ...................

40

SECTION 6

 

REAL-TIME MIDI SEQUENCE PLAYBACK .....................................................

41

TO RECEIVE A MIDI SEQUENCE ................................................................

41

TO SEND A MIDI SEQUENCE......................................................................

43

SYNCING DATADISK TO A SEQUENCER...................................................

44

APPLICATIONS ............................................................................................

47

STORAGE OF DATADISK MIDI SETUP PER DISK .....................................

48

TO STORE THE DATADISK.........................................................................

48

SECTION 7

 

APPENDEX.......................................................................................................

49

TROUBLESHOOTING ...............................................................................................

49

PROBLEM SAVING TO DISK .......................................................................

49

RECEIVING INSTRUMENT WON'T RECEIVE..............................................

49

SPECIFICATIONS .....................................................................................................

51

BOOKS ON MIDI .......................................................................................................

52

VIDEOS ON MIDI ......................................................................................................

52

AlesisDATADISK

Direct MIDI to Disk/Universal Data Storage

USERS MANUAL

INTRODUCTION

Alesis DATADISK

Direct MIDI to Disk /Universal Data Storage

INTRODUCTION

The DATADISK is a real-time MIDI data storage and retrieval unit capable of storing 800K bytes of data onto a 3 1/2" floppy diskette. Unlike similar units which store data to a large RAM (Random Access Memory) buffer before processing, data in DATADISK is stored and retrieved directly from disk so there is no waiting for large RAM buffers to fill.

The disk functions are used to transfer data between the disk drive and MIDI. Because the disk size is fixed, data can not exceed

800K bytes. Each disk can hold 53 MIDI data files, but the total size of the data cannot exceed the maximum disk size, or 800K.

As an additional benefit, DATADISK is universal in that it will read virtually all manufacturers system exclusive data without updating software.

A large 16 character by 2 line LCD display is fitted to make the functions and operations faster, easier, and less cryptic.

FEATURES

Instantly expands memory of any synthesizer or sequencer, drum machine, or effects processor

Easier, safer, and faster than tape backup

Will store MIDI System Exclusive data from virtually any manufacturer

Uses standard 3 1/2" floppy diskettes

Stores up to 800K of data per disk

SEND ALL command allows sending stored data to all MIDI devices in your systems at once

INTRODUCTION

HOW TO USE THIS MANUAL

Since a musician's time is better spent making music than reading manuals, we've tried to make this manual not only easy to use, but also fast and easy to find things when you need to. Therefore, the manual is broken down to 6 major sections, of which Section 5 will be probably be referred to the most. They are:

SECTION 1 - QUICKSTART

This section tells you how to use the most frequently needed operations. If you have to use your DATADISK now but don't have the time to read the entire manual, Section 1 will quickly guide you through.

SECTION 2 - DESCRIPTION OF CONTROLS

This section gives a brief explanation of all front panel and rear panel controls and indicators.

SECTION 3 - INTERFACING DATADISK

Section 3 deals with the interfacing of DATADISK to another MIDI device or into a MIDI system.

SECTION 4 - DATADISK FUNCTIONS

Section 4 gives an overview of the software functions and pages of

DATADISK .

SECTION 5 - OPERATION

This section will probably be the most used part of the manual as it describes how to execute every function in a step by step manner.

Actual display readouts of DATADISK are also included.

SECTION 6 - REAL-TIME MIDI SEQUENCE PLAYBACK

This section decribes the DataDisk's Real-Time MIDI sequence recording and playback functions.

SECTION 7 - APPENDIX

Section 6 provides a simple troubleshooting guide and operational specifications for DATADISK.

3

SECTION 1

SECTION 1

DATADISK QUICK START

TO FORMAT A DISK

DATADISK will use any standard 3 1/2" double sided, double density floppy diskette, but first the disk must be customized for use in

DATADISK . This is called "Formatting".

1)Insert Disk

2)Press the FORMAT button. The display will read:

"FORMAT DISK?".

3)Press the DO/YES button. The display will read: "ARE

YOU SURE?"

4)Press the DO/YES button again to initiate formatting.

DATADISK will proceed to format the disk and will tell you what its doing.

5)When formatting is complete, the display will return to

"FORMAT DISK?" once again. You can now begin a Receive operation by pressing the RECEIVE button.

RECEIVING ONE MIDI DATA FILE FOR STORAGE

1)Press the RECEIVE button. The display will read "RECV

ONE SYSEX: WAITING FOR DATA".

2)Send the MIDI exclusive file from the sequencer, synthesizer, or sampler. The display will tell you that it's receiving the data.

3)When the transmission is complete, the DATADISK will display that the file has been stored and assign a file number.

RECEIVING MULTIPLE MIDI DATA FILES FOR STORAGE

1)Press the RECEIVE button twice. The display will read

"RECV MULT SYSEX: WAITING FOR DATA".

QUICK START

2)Send the MIDI exclusive files from the sequencer, synthesizer, or sampler. The display will tell you that it's receiving the data.

3)At the end of the data transmission, the DATADISK will ask if the file is complete. Send more data or press the YES button to store all of the data received into one file.

SENDING A SINGLE STORED FILE

1)Press the SEND button. The display will show a file.

2)Press SCROLL UP or SCROLL DOWN button until the desired program is displayed.

3)Press the DO/YES button to send the program.

PLEASE NOTE: Files are displayed alphabetically by manufacturer, product, and user name.

SENDING MULTIPLE STORED FILES

1)Press the SEND button twice. The display will ask "SEND

ALL FILES?".

2)Press the DO/YES button to begin transmission of the files. The display will show each file as it is sent.

5

SECTION 2

SECTION 2

DESCRIPTION OF CONTROLS

FRONT PANEL

3 1/2" DISK DRIVE

The disk drive accepts standard double sided, double density (DD) 3 1/2" floppy diskettes, the same as those used in many synthesizers, samplers, and computers. Each disk will store up to 53 MIDI data files as long as the total size of file data does not exceed a maximum of 800K.

LCD DISPLAY

The LCD Display shows the current DATADISK operating status and allows you to view files stored on the diskette. The display features 2 lines of up to 16 characters each.

SCROLL

The SCROLL buttons are used to view either the files of a diskette, select a file, digit, or character, or abort an operation.

NAME

The NAME button is used to enter the character editing mode and allows you to name or rename a file.

RECEIVE

The RECEIVE button is used to enter the Receive MIDI Data mode. In this mode, the DATADISK is able to receive either a single MIDI system exclusive file, multiple system exclusive files (up to the limit of available diskette space), or a MIDI Sample Dump.

SEND

The SEND button is used to send data stored on a diskette to either a sequencer, synthesizer, or sampler, through MIDI. Either a single or multiple files can be sent.

DELETE

The DELETE button is used to erase an unwanted file or files from a diskette.

CAUTION: Once a file is deleted, it is lost forever!

DESCRIPTION OF CONTROLS

BACKUP

The BACKUP button is used to copy either a single file or multiple files of a diskette onto another for safety purposes. This is known as "Backing Up" the diskette.

DO/YES

The DO/YES button is used to initiate all operations of the DATADISK , and to select any choices which might appear in the display. The

DO/YES button is actually a fail safe, giving the user a final choice to either initiate or abort any previously selected operation.

REQUEST

The REQUEST button allows the user to request sample or program bulk dumps from a MIDI device that requires a request before it can send MIDI data. When the DO/YES button is pressed, the transfer is handled as in the Receive MIDI data function.

INFO

This button is used to display information about the diskette currently inserted in the disk drive. The information displayed in the first page will be the number of files stored on the diskette, the percentage of memory used, and the amount of free space available on the diskette.

The second page will show each individual file name and the number of bytes in each file (see Section 4).

A third page will show the DATADISK software version.

MIDI

The MIDI button is used to set the MIDI output of the DATADISK to echo the data received at the MIDI input. MIDI ECHO ON sets the MIDI output to operate as a MIDI THRU port. MIDI ECHO OFF sets the MIDI output to send only MIDI file data initiated from the front panel of the DATADISK .

A second page selects if the DATADISK is to receive program change information (for initiating sending files from the DATADISK ) and on which MIDI channel.

FORMAT

The FORMAT button is used to prepare an unformatted diskette (a diskette that hasn't been especially adapted forDATADISK) for use by the DATADISK.

POWER

The POWER button turns the DATADISK on or off.

7

MIDI IN

SECTION 2

BACKPANEL

MIDI IN

The MIDI IN jack is used to receive MIDI data from a sequencer, sampler, synthesizer, or effects processor for storage on diskette.

MIDI OUT

The MIDI OUT jack is used to send MIDI file data to a sequencer, synthesizer, or sampler. This jack can also be selected to function as a MIDI THRU jack so that it echo's an exact copy of what is being received by the jack.

POWER

The POWER jack is a 4 pin DIN jack which connects to the outboard

9 VAC power transformer.

DESCRIPTION OF CONTROLS

FIGURE 1

DATADISK FRONT AND BACK PANEL

 

POWER

 

OUT/THRU MIDI

MIDI

 

 

IN

 

 

 

SCROLL

 

REQUEST

DO/YES

 

INFO

 

FORMAT

MIDI

 

 

9

 

DRIVE DISK

 

 

DISPLAY

 

 

SCROLL

 

DELETE

SEND NAME

RECEIVE

POWER

BACKUP

SECTION 3

SECTION 3

INTERFACING DATADISK

DATADISK CONNECTED TO A SINGLE MIDI DEVICE

Set-up of the DATADISK is simplicity itself. Simply connect the MIDI Out of the synthesizer, sequencer, effects processor, or other MIDI device that is to send system exclusive data, to the MIDI In of DATADISK. To off-load data, connect the MIDI Out of DATADISK to the MIDI Input of the MIDI device that will be receiving the data.

HAND-SHAKING

Although most MIDI devices that are capable of dumping data to

DATADISK will only need one MIDI cable at a time when using

DATADISK (MIDI device Out to DATADISK In for a dump; DATADISK Out to MIDI device In for an up-load), there is some earlier MIDI equipment that requires both cables to be connected for operation.

This is because the MIDI device must Handshake with DATADISK.

When such a MIDI device is in the receive or up-load mode, DATADISK may be able to send data faster than the MIDI device is able to process it. In order to give itself a chance to catch up with the transmission, the MIDI device sends out a command to stop the transmission (the "Handshake"), then after it has caught up, it sends out another command to begin transmission again.

INTERFACING DATADISK

FIGURE 2 A/B

DATADISK WITH A SINGLE MIDI DEVICE

A. WITH HANDSHAKING B. WITHOUT HANDSHAKING

11

SECTION 3

FIGURE A. WITH HANDSHAKING

 

Alesis MMT-8

 

sequencer,

 

synthesizer,

sampler, or other

 

MIDI device

MIDI IN

MIDI OUT

MIDI OUT

MIDI IN

 

DATADISK

FIGURE B. WITHOUT HANDSHAKING

 

Alesis MMT-8

 

sequencer,

 

synthesizer,

 

sampler, or other

 

MIDI device

MIDI IN

 

MIDI OUT

 

DATADISK

INTERFACING DATADISK

DATADISK USED TO STORE HR-16/HR-16:B, MMT-8 SEQUENCES

In the setup shown below, DATADISK sends System Exclusive data to the HR-16, which has been set to echo System Exclusive information received at its MIDI Input and send it back out of its

MIDI Output (see HR-16 manual for specific instructions). The data is then sent to the MMT-8's MIDI Input.

FIGURE 3

DATADISK USED TO STORE HR-16/MMT-8 SEQUENCES

 

MIDI THRU

 

MIDI IN

HR-16/HR-16:B Drum Machine

Tone Module

MIDI OUT

MIDI OUT

MMT-8 MIDI Sequencer

MIDI OUT

 

DATADISK

13

Alesis DATADISK User Manual

SECTION 3

DATADISK IN A MORE COMPLEX MIDI SETUP

If you are using DATADISK with a number of other MIDI devices, you may wish to use a programmable MIDI patcher to route their MIDI inputs and outputs to DATADISK's MIDI input and output. This will enable you to perform loads and dumps to and from any or all of your MIDI devices without having to manually change any of your connections.

FIGURE 4

DATADISK IN A MORE COMPLEX MIDI SETUP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In

QuadraVerb/MIDIVERB III

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out

In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tone Module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out

 

In

 

 

 

 

Out

In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tone Module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out

In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tone Module

 

MMT-8 MIDI Sequencer

 

 

 

 

 

 

 

 

 

 

Out

 

 

HR-16/HR-16:B Drum Machine

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out

 

 

 

 

 

 

 

 

 

 

 

 

 

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MIDI

 

In

Switcher/Patchbay

In

 

Out In

DATADISK

ALL CONNECTIONS ARE MIDI

DATADISK FUNCTIONS

SECTION 4

DATADISK FUNCTIONS

THEORY OF OPERATION

SYSTEM EXCLUSIVE

DATADISK is able to work because the data is stored in the form of

System Exclusive (or sysex) files. System Exclusive is the unique way that each manufacturer identifies its own particular data. This allows data from one manufacturers equipment not to be mistaken for another manufacturers when it is sent and stored.

When DATADISK is in the Receive mode, either the first byte, or the first three bytes, of information received is the manufacturer ID. In most cases,DATADISK will identify both the brand and model of the equipment that it receives the system exclusive data from. If the data is from an unknown manufacturer, DATADISK will display "ID xxH" for 1 byte IDs or "xxxxxx" for 3-byte ids (where xx or xxxxxx is the manufacturer ID number in hexidecimal) instead of the manufacturer's name. This will not confuse how the data is stored by DATADISK, or loaded by the unknown piece of equipment, however.

RECEIVE MODES

DATADISK normally receives data in the Receive One Sysex mode.

After the manufacturer ID bytes identify the unit, DATADISK begins storing data to disk and continues until it receives an End System

Exclusive command. Some synthesizers or MIDI devices will send multiple messages, one after the other, which DATADISK will recognize and still save under the same file as long as there is no more than 1/2 second delay between the end of one message and the beginning of the next.

If there is more than 1/2 second but less than 1 second, then DATADISK will have stored the first file but will not have had enough time to store the directory of that file before the next set of MIDI messages arrive. When this occurs, DATADISK will display "MIDI OVERFLOW" and suggest that you use Receive Mult mode.

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SECTION 4

If the delay between messages is more than 1 second, DATADISK will store the next set of sysex messages in a new file. This is particularly advantageous if you are saving an entire MIDI equipment system, where you would first send out your MMT-8 data, then your

HR-16 data, then QuadraVerb data, etc.. In this case you would want each piece of gear to have its own file and that just the way that

DATADISK stores it.

If you have a synthesizer that requires that different sections of the same file be sent separately (as in the case of the Yamaha TX802 which sends voice data and function data separately), then you would probably want to use the Receive Mult mode since you would want these different sections of data to be in a single file. In this case, DD doesn't care how long it has to wait between messages. It will continue to put everything into one file until you tell it to stop receiving.

SOFTWARE FUNCTIONS

There are nine functions in the DATADISK which allow the user to send and receive MIDI data, prepare a disk for send/receive operations, and view files stored on the disk. Each function has several choices, called pages, which further allows the user to tailor the function to his specific needs.

These functions are selected by pushing the appropriate function button, and the pages are chosen by then pressing the same function button repeatedly until the desired page is displayed. All operations are then initiated by pressing the DO/YES button.

The current digit value of a parameter is displayed on the LCD within the relevant page. An underline under the left most digit of a value indicates that this value can be edited. Values are edited by pressing the SCROLL buttons.

Files are viewed in alphabetical order by manufacturer, with numbers coming before letters. Exceptions to the rule are the following:

Unknown manufacturer names (either displayed as "Id xxH" or "xxxxxx") are displayed after known manufacturer names.

Unknown product names are left blank and are displayed after known product names within each manufacturer.

Sample dump files are displayed after all manufacturer specific files.

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