Service manual for the Commodore C-128 computer covering specifications, parts lists, block diagrams, and technical details for repair.
This document is a service manual for the Commodore C-128 computer, providing specifications, parts lists, block diagrams, and technical details about the system architecture, microprocessors, memory, and other components. It is intended for service and repair purposes.
The manual details the general features of the C-128, including its compatibility with the Commodore 64, its three modes of operation (64 Mode, 128 Mode, and CP/M Mode), and its hardware specifications such as RAM capacity and processor types. It includes extensive sections on the bus architecture, including the Processor Bus, Translated Address Bus, and Multiplexed Address Bus, as well as specific chapters on the 8502 and Z-80 microprocessors, memory architecture, and video interfaces.
| Power Requirements | 117 Volts AC, 60 Hz, 15 Watts |
|---|---|
| RAM Capacity (Mode 128) | 128K RAM (Expandable to 512K) |
| RAM Capacity (Mode 64) | 64K RAM |
| Processor (Mode 128) | Z80 Microprocessor |
| Processor (Mode 64) | 8502 Microprocessor |
| Keyboard Keys | 92 Keys |
The three modes of operation are 64 Mode, 128 Mode, and CP/M Mode.
Yes, it is 100% compatible with the Commodore 64.
Yes, the RAM is expandable up to 512K using a RAM Disk Option.