24 pin DZM 12 DREH connector at the computer |
|
Pin
|
Name
|
Description |
|
1 |
GND
|
Ground
|
|
2 |
+5V
|
+5 VDC (100 mA max)
|
|
3 |
/RESET
|
Reset, will force a Cold Start. Also a reset output
for devices.
|
|
4 |
CNT1
|
Counter 1, from CIA #1
|
|
5 |
SP1
|
Serial Port 1, from CIA #1
|
|
6 |
CNT2
|
Counter 2, from CIA #2
|
|
7 |
SP2
|
Serial Port 2, from CIA #2
|
|
8 |
/PC2
|
Handshaking line, from CIA #2
|
|
9 |
ATN
|
Serial Attention In
|
|
10
|
+9V AC
|
+9 VAC (+ phase) (100 mA max)
|
|
11
|
+9V AC
|
+9 VAC (- phase) (100 mA max)
|
|
12
|
GND
|
Ground
|
|
|
|
|
|
A |
GND
|
Ground
|
|
B |
/FLAG2
|
Flag 2 |
|
C |
PB0
|
Data 0 |
|
D |
PB1
|
Data 1 |
|
E |
PB2
|
Data 2 |
|
F |
PB3
|
Data 3 |
|
H |
PB4
|
Data 4 |
|
J |
PB5
|
Data 5 |
|
K |
PB6
|
Data 6 |
|
L |
PB7
|
Data 7 |
|
M |
PA2
|
PA2
|
|
N |
GND
|
Ground
|
| |
