Korg DSS-1 User manual

DIGITAL SAMPLING SYNTHESIZER
SERVICE MANUAL
CONTENTS
1. SPECIFICATIONS
2. ERROR MESSAGES
3. MIDI IMPLEMENTATION.
4. STRUTURAL DIAGRAM..
5. CONNECTOR DIAGRAM.
6. BLOCK DIAGRAM
7. CIRCUIT DIAGRAM
8. P.C. BOARD
.. 2 9. SYSTEM EXPLANATION 32
.. 3 10. MAIN CIRCUIT EXPLANATION 39
.. 4 11. CHECK AND ADJUSTMENT
..9 PROCEDURE 43
12 12. REFERENCE DATA 49
13 13. TROUBLESHOOTING GUIDE 59
14 14. PARTS LIST 62
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1. SPECIFICATIONS
• KEYBOARD:
• CONTROLLERS:
• CONFIGURATION:
• SOUND SOURCES:
• NUMBER OF SOUND SOURCES:
• EFFECTS:
• NUMBER OF PROGRAMS:
• BUILT-IN DISK DRIVE:
• SUPPLIED ACCESSORIES:
• DIMENSIONS:
• WEIGHT:
• OPTIONS:
C~C 61 Keys, Velocity, After Touch
Joystick (X Asix: OSC/VCF FC Bend, + Y Axis: OSC Modulation,
- Y Axis: VCF Modulation), Program Up Jack, Sustain Damper
Jack
8 Voices, 16 Oscillators, (2 Oscillators per Voice), 8 VCF
Modules, 8 VCA Modules
Waveforms Obtained by Sampling, 128 Harmonic Synthesis, or
"Drawing" can be edited, assigned to sections of the keyboard
and looped. 12-bit quantization. Sampling Frequencies and
Times: 16KHz, 16s, 24KHz, 11s, 32KHz, 8s, 48KHz, 5.5s (can be
used together as one sound source), Number of Keyboard Split
Points: Up to 16
Up to 16 in internal wave RAM, Up to 120 per Disk
Digital Delay x2, Equalizer HIGH & LOW (All Programmable)
32 in memory, 128 on disk
Takes 3.5-inch, Double Sided, Double Density (1MB unformatted)
Floppy Disks, 770K PCM Data Storage Capacity per Disk
Floppy Disks x4, AC Power Cord
1171 (W) x 436 (D) x 123 (H) mm
18.5kg
PS-1 PEDAL SWITCH, PS-2 PEDAL SWITCH, TWC-030 TWIN
CABLE (3m), DS-1 DAMPER SWITCH, KH-1000 DYNAMIC
STEREO HEADPHONES, HC-DSS HARD CASE, MIDI CABLE
(7m/10m/12m), MF-2DD MICRO FLOPPY DISKS, SOUND
PROGRAM LIBRARY
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2. ERROR MESSAGES
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3. MIDI IMPLEMENTATION
□DTRANSMITTED DATA
1-1 CHANNEL MESSAGES
• nnnn = channel numbers 0 to 15
• Okkk kkkk: note number
If key transpose is used, then the transmitted note number is the transpos
ed value (regular note range of 36 to 96 minus up to 6 or plus up to 5.
• Oppp pppp: program number
Program numbers are represented on the display by system programs ac
cording to this chart.
Display
Progran
number
SYSAP0I— 0
SYSA P02 — I
SYSAP3I— 30
SYSAP32 — 31
Display
Program
number
SYSB POI— 32
SYSB P02- 33
SYSBP3I— 62
SYSB P32 - 63
Display
Program
number
SYSC P0I —
SYSC P02 —
SYSC P3I - 94
SYSCP32 — 95
Display
Program
number
SYSD P0l-
SYSD P02—
SYSDP3I — 126
SYSDP32 — 127
1-2 SYSTEM EXCLUSIVE MESSAGES
(1 (DEVICE ID
(2DSS-1 SYSTEM EXCLUSIVE MESSAGES
NOTE!FUNCTION ID
42H(Mode Data)
45H(Multi Sound List)
44H(Multi Sound Parameter Dump)
43H(PCM Data Dump)
46H (Program Name List)
40H (Program Parameter Dump)
23H(Data Load Completed)
24H(Data Load Error)
21H (Write Completed)
22H (Write Error)
[URECOGNIZED RECEIVE DATA
2-1 CHANNEL MESSAGES
• Mode messages are received only on the specified channel even if OMNI
is on.
• Okkk kkkk = 0 to 127: note number
• Oppp pppp = O to 127: program number
The MIDI mode function 2 program change mode settings affect received pro
gram numbers as shown in this chart.
2-3 SYSTEM EXCLUSIVE MESSAGES
(DDEVICE ID REQUEST
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NOTE:FUNCTION ID
12H (Mode Request)
13H (Ray Mode Request)
16H (Mufti Sound List Request)
45H(Mutti Sound List)
15H( Mutt. Sound Parameter Request)
44H(Mutti Sound Parameter Dump)
I4H(PCM Data Request)
43H(PCM Data Dump)
17H (Program Name List Request)
I OH (Program Parameter Request)
40H (Program Parameter Dump)
4IH(Program Parameter Change)-
IIH(Wrrte Request)
[3]DSS-1 SYSTEM EXCLUSIVE FORMAT
1. MODE REQUEST (FUNCTION 10 = 12. RECEIVE ONLY)
6. MULTISOUND PARAMETER REQUEST (FUNCTION 10 = 15, RECEIVE ONLY)
7. MULTISOUNO PARAMETER OUMP (FUNCTION 10 = 44, SAME FOR TRANSMIT AND
RECEIVE)
NOTE KMODE DATA
00 (PLAY MODE)
01 (SAMPLE MODE^
02(EDIT SAMPLE MODE)
03 (CREATE WAVE FORM MODE)
04(MULTI SOUND MODE)
05 (MIDI MODE)
06 (SYSTEM MODE)
07 (DISK UTILITY MODE)
08 (PROGRAM PARAMETER MODE)
3. PLAY MODE REQUEST (FUNCTION ID = 13, RECEIVE ONLY)
NOTE 1: MAX INTERVAL
Sets maximum value obtained with following formula.
(The lower 7 bits of the twos complement.)
(Top key) - (Org key) •«- f - 12 (16kHz)
I - 7 (24kHz)
0 (32kHz)
5 (48kHz)
NOTE 2: SOUND PARAMETER
4. MULTISOUNO UST REQUEST (FUNCTION ID = 16, RECEIVE ONLY)
8. PCM DATA REQUEST (FUNCTION ID = 14, RECEIVE ONLY)
9. PCM DATA DUMP (FUNCTION ID = 43, SAME FOR TRANSMIT AND RECEIVE)
NOTE i: MULTI SOUND DATA
FORMAT
dd-
ee-
•dd
(8 bytes)
(6 bytes)
DESCRIPTION
Mutti Sound Name
Multi Sound Length
(seeg-W))
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10. PROGRAM NAME LIST REQUEST (FUNCTION 10 = 17, RECEIVE ONLY)
11. PROGRAM NAME UST (FUNCTION ID = 46, TRANSMIT ONLY)
12. PROGRAM PARAMETER REQUEST (FUNCTION ID = 10, RECEIVE ONLY)
13. PROGRAM PARAMETER DUMP (FUNCTION ID = 40, TRANSMIT, RECEIVE)
• Program Name not sent.
14. PROGRAM PARAMETER CHANGE (FUNCTION ID = 41, RECEIVE ONLY)
• 2 bytes for params 46, 52.
15. WRITE REQUEST (FUNCTION ID = 11, RECEIVE ONLY)
16. WRITE COMPLETED (FUNCTION ID = 21, SEND ONLY)
17. WRITE ERROR (FUNCTION ID = 22, SEND ONLY)
18. DATA LOAD COMPLETED (FUNCTION ID = 23, SEND ONLY)
19. DATA LOAD ERROR (FUNCTION ID = 24, SEND ONLY)
[4]DATA FORMAT REFERENCE
(DADDRESS. LENGTH DATA FORMAT(6 Bytes)
I st Byte
2nd
3rd
4th
5th
6th
bO = LSB bl8=MSB
0 -261885 (address) J -261886 (length)
- : Not Used
(2)PCM DATA FORMAT (2 Bytes)
I st Byte
2nd Byte
b0 = LSB bll=MSB
0 (- max) - 2048 (0) - 4095 (+ max)
- • Not Used
(3)CHECK SUM (I Byte)
Lower 7 bits of sum of data after function ID to before check sum.
(4)NAME FORMAT (8 bytes)
1st byte = 1st character; 8th byte = 8th character. All characters must be
7-bit ASCII in the range of 20H to 7FH, excluding 22H, 2AH, and 3FH.
(5)PCM DATA MEMORY MAP
Absolute Address = 0
26>SS5
Multi Sound
Multi Sound
| Multi Sound ! Multi Sound I
| Length j Length [
r v i
n=Numb€' of
Mu& Sounds
Sound
I I
I Sound 2
I Loop |
l« Length 1
Sound Length |
Sound Word Length
m=Numbe' of
Sound Start
Address
I
. Loop Start Address _ |
• The multisound parameter SOUND START address and LOOP START ad
dress values are different from those displayed by the DSS-1. They are
rather the relative address values from the starting address.
• Absolute addresses are used in the PCM data dump.
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(6DSS-1 PROGRAM PARAMETER MAP
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NOTE:
1. Parameter No.: Parameter number used for program parameter change.
Offset: Byte offset within program parameter dump.
Numbers within parentheses are parameter numbers used when editing
within the DSS-1.
2. Must be set for both oscillators so that OSC1 + OSC2 = 100.
3. DDL TIME Format
LOW
HIGH
4. The MAX BEND RANGE value is limited to the range of 0 to 12, derived by
subtracting from 12 the larger MAX INTERVAL value of the multisounds
assigned to OSC1 and OSC2. This must be reset if there is a change in the
multisound MAX INTERVAL.
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