96 PIN DIN 41612 FEMALE at the backplane
96 PIN DIN 41612 MALE at the boards.
The ECB-bus was defined in 1984 by the german company KONTRON.
It was defined for the 100x160mm-europa-card and used 2x32 pins of a
3x32-pin-connector (row a and c).
Later the third (middle) row of pins was defined for additional signals
used in 16-bit-systems. This extended bus uses all 3x32pins.
Row a & c (for 8 bit)
Pin
Name
Desciption
a1 +
5V +
5 volts dc
a2 D
5 D
ata line bit 5
a3
D6
Data line bit 6
a4
D3
Data line bit 3
a5
D4
Data line bit 4
a6
A2
Address 2
a7
A4
Address 4
a8
A5
Address 5
a9
A6
Address 6
a10
WAIT/
CPU wait
a11
BUSRQ/
bus request
a12
a13
a14
a15
a16
a17
a18
A14
address 14
a19
a20
M1/
first cycle
a21
a22
a23
a24
a25
a26
a27
IORQ/
in/out request
a28
RFSH/
refresh cycle
a29
A13
address 13
a30
A9
address 9
a31
BUSAK/
bus acknowledge
a32
GND
signal ground
Pin
Name
Desciption
c1
+5V
+5 volts dc
c2
D0
Data line bit 0
c3
D7
Data line bit 7
c4
D2
Data line bit 2
c5
A0
Address 0
c6
A3
Address 3
c7
A1
Address 1
c8
A8
Address 8
c9
A7
Address 7
c10
c11
IEI
interrupt enable in
c12
c13
c14
D1
Data line bit 1
c15
c16
IEO
interrupt enable out
c17
A11
address 11
c18
A10
address 10
c19
c20
NMI/
not maskable interrupt
c21
INT/
normal interrupt
c22
WR/
write cycle
c23
c24
RD/
read cycle
c25
HALT/
cpu stopped
c26
c27
A12
address 12
c28
A15
address 15
c29
c30
MREQ/
memory request
c31
RESET/
cpu reset
c32
GND
signal ground
Row b (additional for 16 bit)
Pin
Name
Desciption
b1
+5V
+5 volts dc
b2
A20
address 20
b3
A21
address 21
b4
A22
address 22
b5
A23
address 23
b6
D8
data line bit 8
b7
D9
data line bit 9
b8
D10
data line bit 10
b9
D11
data line bit 11
b10
D12
data line bit 12
b11
D13
data line bit 13
b12
D14
data line bit 14
b13
D15
data line bit 15
b14
IRQ7
interrupt 7
b15
IRQ6
interrupt 6
b16
IRQ5
interrupt 5
b17
IRQ4
interrupt 4
b18
IRQ3
interrupt 3
b19
IRQ2
interrupt 2
b20
IRQ1
interrupt 1
b21
IRQ0
interrupt 0
b22
IOWR
I/O write
b23
??
??
b24
IORC
I/O read
b25
MRDC
Mem read
b26
??
??
b27
MWRC
Mem write
b28
DS0
Data Select 0
b29
DS1
Data Select 1
b30
OFF
bus driver tristate
b31
LOCK
bus driver tristate disabled
b32
GND
signal ground
DS0
DS1
Description
0
0
data transfer 16-bit
0
1
only bit 0-7
1
0
only bit 8-15
1
1
no data transfer
Note: / = Active Low
Contributor:
Gerd Wilken
Source:
One issue of the magazine computer-technik (c't) in 1984
(at the network device).