| Pin 1 | |||
| Pin 2 | i0 | I | A13 von CPU |
| Pin 3 | i1 | I | A14 von CPU |
| Pin 4 | i2 | I | A15 von CPU |
| Pin 5 | i3 | I | !VA14 |
| Pin 6 | i4 | I | !CHAREN |
| Pin 7 | i5 | I | !HIRAM |
| Pin 8 | i6 | I | !LORAM |
| Pin 9 | i7 | I | !CAS |
| Pin 10 | F7 | O | ROMH |
| Pin 11 | F6 | O | ROML |
| Pin 12 | F5 | O | I/!O |
| Pin 13 | F4 | O | G R/!W |
| Pin 14 | GrouND: Masse (0V) | ||
| F3 | O | CHAROM | |
| Pin 16 | F2 | O | KERNAL |
| Pin 17 | F1 | O | BASIC |
| Pin 18 | F0 | O | CASRAM |
| Pin 19 | !CE | !CE | |
| Pin 20 | i15 | I | VA12 |
| Pin 21 | i14 | I | VA13 |
| Pin 22 | i13 | I | !GAME |
| Pin 23 | i12 | I | !EXROM |
| Pin 24 | i11 | I | R/!W |
| Pin 25 | i10 | I | !AEC |
| Pin 26 | i9 | I | BA |
| Pin 27 | i8 | I | A12 von CPU |
| Pin 28 | – | Betriebsspannung: +5V DC |