Korg MEX-8000 User manual

ffir900 MEMORY EXPANDER
SERUIGE
MANUAL
1. SPECIFICATIONS
2. MIDI IMPLEMENTATION
3. CIRCUIT DESCRIPTION
CONTENTS
2 5. BL0GK DIAGRAM ....r..rrr.rrr...r.!..r!. T
g 6. CIRGUIT DIAGRAM rr.........rr.t.....rr. 8
5 7. P.C. BOARD ...r..rt.tr!...r........tr..tttr I
6 8. PARTS LIST .....rr.rrr...r...r...rrtr.rrr'. 1O
4. §TRUCTURAL DIAGRAM H0nff

MEMORY
CONTROL Keys
FUNCTION Switches
INDICATORS
LINE SELECT Switch
MlDl Connectors
POWER
BATTERY LIFE
WEIGHT
DIMENSIONS:
256 Program settings (64 x 4 BANKS)
BANK, SAVE, LOAD, CANCEL
DEVICE, MIDI CH., PROTECT
BANK (A, B, C, D) GOOD, ERROR
MEMORY/THRU (Functions as power ON/OFD
lN/ouT (Data Dump)
rN/ouT (rHRU)
DC 9V [AC Adaptor, or 6 AA (sum'3) batteriest
About I hrs. (Continuous operation)
1.1 kg.
232 (W) x 36 (H) x 131 (D) mm
* Specifications subject to change without notice.
FEATURES AND FUNGTIONS
FUNCTION Switch----l
I
lDl (Data Dump)
Connector
MlDl(THRU) Connector
DC 9V Connector
SELECT/
POWER Switch
GOOD lndlcator
ERROR lndicator
V VAI
ft orn ourp) our N (rrtru) our ocgv
'L-j=r|Dt----:i +t||OJ o.3@
*o*o[?E)knaa0
2

1. TRANSMITTED DATA
NOTE 1
nnnn = MlDl CHANNEL NUMBER (0000- 1 1 1 1)
ppppppp = PROGRAM NUMBER (0 - 63)
lf DEVICE SWITCH = 0000 - 0010, PROGRAM CHANGE wi!!
be send.
NOTE 2
vvvvvvv= 000001 1 : DW-8000/EX-8000 (DEVICE = 0)
= 0000100: DW-6000 (DEVICE = 1)
= 0001001: DVP-1 (DEVICE=2\
lf DEVICE SWITCH = 0001 (DW-6000), FORMAT lD will be
designated 30H.
El onra DUMP REoUEST (2)
NOTE 4
vvvvvvv = 000001 1 : DW-8000/EX-8000 (DEVICE = 0)
= 00001 00: DW-6000 (DEVICE = 1)
= 0001001: DVP-1 (DEVICE=2)
lf DEVICE SWITCH = 0001 (DW-6000), FORMAT lD will be
designated 30H.
4 oera DUMP (2)
NOTE 5
vvvvvvv = 0001 100: POLY-80OII (DEVICE = 3)
= 0000001 : EX-800 (DEVICE = 4)
= 00001 10: POLY-800 + MDK (DEVICE = 5)
E WRIre REoUEST
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
Ovvv vvvv
0001 0001
oppp pppp
1111 0111
EXCLUSIVE
KORG IO 42H
FORMAT lD 3t H (,r =61'11
DEVICE ID
WRITE REOUEST l1H
Program number=0-63
EOX
NOTE 6
vvvvvvv = 3333?åå; BW:3333'ffii,?39 gfivrcE = 0)
= 0001001: DVP-1 (DEVICE=2)
lf DEVICE SWITCH = 0001 (DW-6000), FORMAT tD will be
designated 30H.
3
NOTE 3
vvvvvvv= 0001 1 00:
= 0000001:
= 00001 1 0:
POLY-800[ (DEVICE = 3)
EX-800 (DEVICE = 4)
POLY-800 + MDK (DEVICE = s)
El oam DUMP (1)
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
Ovvv vvvv
0100 0000
oddd dddd
oddd dddd
1111 0111
EXCLUSIVE
KORG IO 42H
FORMAT lD 3,t H (,r =691
DEVICE !D
DATA DUMP 4OH
DATA
EOX
STATUS SECOND THIRD DESCRIPTION
1100 nnnn oppp pppp PROGRAM
CHANGE
E oem DUMP REouEsr (1)
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
Ovvv vvvv
0001 0000
1111 0111
EXCLUSIVE
KORG ID 42H
FORMAT lD 3*H (* =Q11;
DEVICE !D
DATA DUMP REQUEST 1OH
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
0010 0001
Ovvv vvvv
0000 dddd
oooo dddd
0000 ssss
0000 ssss
1111 0111
EXCLUSIVE
KORG ID 42H
FORMAT ID 21H
DEVICE ID
DATA
oHECK SUM (LSB)
(MSB)
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
0010 0001
Ovvv vwv
0001 0000
1111 0111
EXCLUSIVE
KORG ID 42H
FORMAT ID 21H
DEVICE ID
DATA DUMP REQUEST 1OH
EOX

II DATA DUMP (1)
2. RECOGNIZED RECEIUE DATA
E oarn DUMP (2)
EI WNrE COMPLETED
NOTE 7
vvvvvvv= 000001 1: DW'8000/EX-8000 (DEVICE = 0)
= 00001 00: DW-6000 (DEVICE = 1)
= 0001001: DVP-1 (DEVICE=21
lf DEVTCE SWITCH = 0001 (DW'6000), FORMAT lD will be
designated 30H.
4I WRITE ERROR
NOTE 8
vvvvvvv= 000001 1: DW-8000/EX-8000 (DEVICE = 0)
= 0000100: DW-6000 (DEVICE = 1)
= 0001001: DVP-1 (DEVICE=2)
lf DEVICE SWITCH=0001 (DW-6000), FORMAT lD wil! be
designated 30H.
tr DUMP ERROR
NOTE 9
vvvvvvv=0001100:
= 0000001:
= 00001 1 0:
POLY-8OOtr (DEVICE = 3)
EX'800 (DEVICE = 4)
POLY-800 + MDK (DEVICE = 5)
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
Ovvv vvvv
0010 0010
1111 0111
EXCLUSIVE
KORG IO 42H
FORMAT lD 3*H (* =69;
DEVICE ID
WRITE ERROR 22H
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
0vvv vvvv
0100 0000
oddd dddd
oddd dddd
1111 0111
EXCLUSIVE
KORG ID 42H
FORMAT lD 3,rH (* =61'11
DEVTCE rD (NOTE 4)
DATA DUMP REOUEST 4OH
DATA
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
0010 0001
0vvv vvvv
0000 dddd
oooo dddd
0000 ssss
0000 ssss
1111 01 11
EXCLUSIVE
KORG ID 42H
FORMAT ID 21H
DEVTCE rD (NOTE 5)
DATA
oHECK SUM (LSB)
(MSB)
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
0010 0001
0vvv vvvv
0010 0000
1111 0111
EXCLUSIVE
KORG ID 42H
FORMAT ID 21G
DEVICE ID
DUMP ERROR
EOX
BYTES DESCRIPTION
1111 0000
0100 0010
001 1 nnnn
Ovvv vvvv
0010 0001
1111 0111
EXCLUSlVE
KORG ID 42H
FORMAT lD 3'rH (* =911;
DEVICE ID
WRITE COMPLETED 21H
EOX
4

I Outllne
The MEX€0@ has been marketed as a memory expander,
which is also capable of application with other units capable
of data dump for MlDl data processing.
I Maln Featuree
1. lnput/output of MlDl data
2. il Program setting memory in each of 4 banks (44 x 4)
3. Selection of connected device via Device Switch
DEVICE Swltch
4. Changing of MlDl Channel via MlDl CH switch
MlDl CH. Swltches
5. Protection of data in various banks via PROTECT switch
PROTECT Swltches
6. ERROR LED indication of weak batteries (ERROR LED
blinks)
EXRON
-H-flå:lT,[,0J,:T'',n
I Hadware Layout
(Refer to Block diagram and Circuit diagram)
The basic system is made up of a CPU using a C-MOS
63803X (lCS), 64 K EPROM 27il (lCG) for system program,
and a 64K CMOS RAM 62il ( x 2) for program setting data.
This RAM is backed up by a lithium battery.
HC139 is used as a decoder. On one side (1/2 HC139) it is
connected to the matrix switch for switch selection, while on
the other side (1/2 HC139) it decodes address (A13-415) se-
lecting RAM or ROM chip.
All s-witch inputs are processed according to system pro-
gram, being fed into cPU PoRT 5 (P.54 - P.sn as 4 bit
SW Data.
All LEDs light atter signal passes through LED DRIVER
Mil527 (lC4), controlled by 6 bit data output through CPU
PORT6(P.60 - P.65).
MlDl DATA is output via (MlDl lN) PORT 24 (fX), being fed
in via CPU PORT 23 (RX), passing through Auto-coupler
PC-900 (PC-1). CPU PORT 52 is used for battery level
check. Turns to "L" when battery level goes below 6.2V.
Reset circuits comprise M83761 (1C10).
sw1 sw2 sw3 sw4 Ilevlce
0 0 00DW€mo/EX€mo
00 0 1DW€000
0010 DVP.1
0011POLY-800tr
0100 EX-800
0101POLY€OO + MDK
0110
1111 Not used
l However, if the connected device is capable of sound data\
I dump by itself then LOAD, SAVE operations may be per- I
I formed with these switches set to 0110. At this time, Bank I
\D may not be used. /
sw1 sw2 sw3 sw4 MIDI CHANNEL
0000ch1
0 0 01ch2
0 0 10ch3
0011ch4
0100ch5
0101ch6
0110ch7
01 1 1 ch8
1000ch9
1001ch 10
1010ch 11
101 1 ch 12
1100ch 13
1101ch 14
1110ch 15
1111ch 16
sw1 sw2 sw3 sw4
PROTECT ON 11 1 1
PROTECT OFF 0 0 00
5

PART IIO. PART I{AiIE O'TY
AFE B ZMC 3x8 7
BTP2G B BZMC 3x6 7
cFE B ZMC 2.6xG 2
DHNlZMC3 1
ETP2G B ZMC 3X6 2
PART 1{0. PART ]{AITIE PART GODE
1UPPER CASE 64073900
2 LOWER CASE 64074000
3BATTERY COVER il074200
4 JACK CHASSIS 64074100
5SLIDE SW. KNOB SUPPORT 64A74404
6SPACER 6407t{n0
7RADIATION BOARD s6003000
ISCREW OF BATTERY COVER 64402500
9RUBBER FEET 50008700
10 BATTERY CUSHION 50009200
11 SLIDE SW. KNOB 62009600
12 NAME PLATE 58024000
13 SERIAL SEAL
14 BATTERY CUSHON 50008800
15 SPONGE CUSHION 50009800
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F
G
E
- 10