Zenith Z-170, Owner'S Manual

Page: 61 / 147

Expansion Bus Connector
55
Operation
All signals are at TIL level. Pins Al, 83, 85, 87, 89, and 829 are non-IBM
standard. 5V and 12V are not supplied on the bus.
P I N N O .
S I G N A L
P I N N O .
S I G N A L
A 1 N C 8 1
G N D
A 2 0 7 8 2 R E S E T D R V
A 3
0 6 8 3
+ 5 V
A 4 D S 8 4 I R Q 2
A S
0 4
8 S
G N D
A 6
0 3 8 6
D R Q 2
A 7
0 2 8 7
G N D
A 8
0 1 8 8
N C
A 9 D O 8 9
G N D
A 1 0 1 / 0
C H
R O Y 8 1 0
G N D
A 1 1
A E N
8 1 1 M E M W *
A 1 2 A 1 9 8 1 2
M E M R *
A 1 3
A 1 8 8 1 3
l O W *
A 1 4 A 1 7 8 1 4
l O R *
A 1 S
A 1 6
8 1 S D A C K 3 *
A 1 6
A 1 S
8 1 6 D R 0 3
A 1 7 A 1 4 8 1 7
D A C K 1 *
A 1 8
A 1 3
8 1 8 D R 0 1
A 1 9
A 1 2
8 1 9 D A C K O *
A 2 0
A 1 1 8 2 0
C L O C K
A 2 1
A 1 0 8 2 1
I R Q ?
A 2 2 A 9 8 2 2 I R Q 6
A 2 3
A 8 8 2 3
I R Q S
A 2 4
A ? 8 2 4
I R Q 4
A 2 S
A 6 8 2 S I R Q 3
A 2 6 A S
8 2 6
D A C K 2 *
A 2 7 A 4
8 2 7
T I C
A 2 8
A 3 8 2 8 A L E
A 2 9 A 2
8 2 9
G N D
A 3 0 A 1
8 3 0
M C L K
A 3 1 A O
8 3 1
G N D