Commodore 128

Name/Title

Commodore 128

Entry/Object ID

CI-CS-0019

Tags

Commodore, Microcomputer, computer

Description

Commodore 128

Category

Computers

Made/Created

Manufacturer

Commodore Business Machines

Date made

circa 1985 - circa 1989

Other Names and Numbers

Other Names

Name Type

Brand/Product Line Name

Other Name

Commodore

Name Type

Model

Other Name

128

Other Numbers

Number Type

Serial Number

Other Number

CA1841432

Condition

Overall Condition

Good

Date Examined

August 24, 2025

Acquisition

Acquisition Method

Found

Notes

Found at an e-waste site with a matching Commodore 1902A monitor and 1571 disk drive.

General Notes

Note Type

General Notes

Note

The Commodore 128, also known as the C128, is the last 8-bit home computer that was commercially released by Commodore Business Machines (CBM). Introduced in January 1985 at the CES in Las Vegas, it appeared three years after its predecessor, the Commodore 64, the bestselling computer of the 1980s. Approximately 2.5 million C128s were sold during its four-year production run. The C128 is a significantly expanded successor to the C64, with nearly full compatibility. It is housed in a redesigned case with an improved keyboard including a numeric keypad and function keys. Memory was enlarged to 128 KB of RAM in two 64 KB banks. A separate graphics chip provided 80-column color video output in addition to the original C64 modes. It also included a Zilog Z80 CPU which allows the C128 to run CP/M, as an alternative to the usual Commodore BASIC environment. The huge CP/M software library, coupled with the C64's software library, gave the C128 one of the broadest ranges of available software among its competitors. Manufacturer Commodore Business Machines (CBM) Type Home computer Release date 1985; 40 years ago Introductory price US$299 (equivalent to $870 in 2024)[1] Discontinued 1989; 36 years ago Units sold 2.5 million worldwide Operating system Commodore BASIC 7.0 Digital Research CP/M 3.0 GEOS CPU MOS 8502 @ 1–2 MHz Zilog Z80A, or Zilog Z80B @ 4 MHz Memory 128 KB (standard), 640 KB (with 512 KB REU expansion RAM) Graphics VIC-II E (320×200, 16 colors, sprites, raster interrupt), MOS 8563 (RGBI 640×200 16 colors, blitter) Sound SID 6581/8580 (3× Osc, 4× Wave, Filter, ADSR, Ring) Predecessor Commodore 64

Note Type

Object Specific Information

Note

This item has been tested and is fully functional.

Create Date

August 24, 2025

Update Date

August 24, 2025