| Year | 1985 |
| CPU | MOS 8502 (1 or 2 MHz, switchable by software) and Z80A (4 MHz (2 MHz during bus access)) |
| RAM | 128 KByte (64 KByte accessible at a time via bank switching), expandable to max. 512 KByte |
| ROM | 64 KByte with Basic V7.0 (32 KByte), Kernal (16 KByte) and C64 operating system (16 KByte) |
| Operating system | proprietary, C64 compatible, CP/M |
| Sound chip | SID 6581 |
| Sound | 3 voices, mono |
| Graphics chip | VIC 6569, MOS 8563 (80-column mode) |
| Graphics modes | 640 x 200 (monochrome), 320 x 200 (monochrome), 160 x 200 (4 colors) |
| Colors | 16 |
| Text mode | 80 x 25, 40 x 25 |
| Keyboard | Detached typewriter keyboard, QWERTZ, 92 keys, separate numeric keypad |
| Interfaces | User port, expansion port, audio/video, RF, Datasette, 2x joystick, IEC bus (serial), RGBI |
| Storage | Internal 5.25" 1571 drive, external floppy drive (VC1541 I, VC1541 II, 1571), external cassette drive |
| Special features | 3 operating systems in one computer: C128, C64 and CP/M |
| Condition | 100% working |
C128D
Specifications