Commodore 128 Programmer's Reference Manual page 410

400 COMMODORE 128
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
TYPE
GND
+ 5V
+ 5V
IRQ
R/W
Dot Clock
I/Ol
GAME
EXROM
I/O2
ROML
BA
DMA
D7
D6
D5
D4
D3
D2
Dl
DO
GND
PIN
A
B
C
D
£
F
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
TYPE
GND
ROMH
RESET
NMI
S02
A15
A14
A13
A12
All
A10
A9
A8
A7
A6
A5
A4
A3
A2
Al
A0
GND
ii
u
LJ
Table 12—9. Expansion Port Pin Descriptions
U
L
u