The Commodore 128D, often referred to simply as the C128D, is a notable and advanced iteration of the classic Commodore 128 computer, released by Commodore International in the mid-1980s. It was designed to be an enhanced successor to the earlier Commodore 128 and offered a range of improvements and new features, making it a versatile home and business computer.
Key features and characteristics of the Commodore 128D include:
1. **Enhanced Design**: The "D" in Commodore 128D stands for "desktop," highlighting its form factor. Unlike the original Commodore 128, which had a separate system unit and keyboard, the C128D integrated both the computer and keyboard into a single unit, resembling a desktop PC.
2. **Compatibility**: The C128D was fully compatible with the earlier Commodore 64 and Commodore 128 models, ensuring a vast library of software was available for users. It featured three different operating modes: C128 mode, C64 mode, and CP/M mode, catering to a wide range of applications.
3. **128 Kilobytes of RAM**: Similar to the Commodore 128, the C128D had 128 kilobytes of RAM, making it one of the most memory-rich home computers of its time. This allowed for more advanced and memory-intensive applications and games.
4. **Built-in 1571 Floppy Disk Drive**: One of the standout features of the C128D was its integrated 1571 5.25-inch floppy disk drive. This drive offered higher storage capacity and faster data access compared to the earlier 1541 drive, making it a preferred choice for business users and enthusiasts.
5. **80-Column Text Mode**: The Commodore 128D introduced an 80-column text mode, which was ideal for word processing and business applications. It was a significant improvement over the earlier 40-column text mode and made the computer more suitable for serious productivity tasks.
6. **Graphics and Sound**: The C128D retained the impressive graphics and sound capabilities of the original Commodore 128, with its VIC-II and SID chips providing vibrant graphics and rich audio.
7. **CP/M Compatibility**: The inclusion of a Z80 processor allowed the C128D to run CP/M, a popular operating system for business and productivity applications during that era. This feature expanded its capabilities for professional use.
8. **Modularity**: The C128D retained some modularity despite its integrated design, allowing for the connection of peripherals and expansion cartridges to enhance its functionality.
The Commodore 128D was a versatile and powerful personal computer that appealed to both home users and small businesses. Its backward compatibility with the Commodore 64 and the option to run CP/M made it a versatile machine for various applications. Today, it is a sought-after collector's item, cherished for its historical significance and the rich software library available for the platform.