Two 9 pin D-sub males (D9M) at the computer.
Note: POT is a linear 470 kOhm (±10 %)
Note: In Commodore 128 the pin 7 (+5 V) is max. 50 mA
Note that when a 1350 (rolling joystick) mouse is used, pins 1 through 4 will have pulses on them instead of logic low levels as a joystick would provide. Also, a pressed right mouse button grounds pin 9. The POT lines are otherwise unused by a 1350. When a 1351 (proportional) mouse, a paddle, or graphics tablet is used, the two POT lines are used for direction control. A pressed right mouse button grounds pin 1.
Source: Commodore 64 User Manual, Commodore 128 Programmer's Reference Guide
C128 Power Supply
Connector at the Commodore 128.
Pin |
Name |
Power
supply
output |
1 |
+5Vdc |
2.5A |
2 |
n/c |
|
3 |
9Vac |
1A |
4 |
Ground |
|
5 |
9Vac |
1A |
Note: the square metal shell of the plug is also a ground.
Source: Ray Carlsen's C= Repair Articles
Commodore 64/128 Cartridge Expansion Slot
44 pin female edge at the computer. The pins function as described below:
Top |
1 |
GND |
System ground. All four ground lines are usually tied together. |
2,3 |
+5VDC |
5-volt power supply to the cartridge. (Total user port and cartridge devices can draw no more than 450 mA.) |
4 |
/IRQ |
IRQ. As long as this is low, it requests an interrupt. |
5 |
R/W |
Read/write line. Reads when low, writes when high. |
6 |
DOT CLOCK |
8.18 MHz video dot clock input, for your own video control. |
7 |
/I/O1 |
I/O 1 goes low when 64 detects use of $DE00-$DEFF; can be used with |