Commodore 16 Text Mode Resolution and Display Specs

This article provides a technical overview of the Commodore 16 home computer, specifically focusing on its text mode resolution and display capabilities. Readers will discover the exact character grid dimensions, the underlying pixel resolution, and the role of the TED chip in generating these visuals during the 1980s.

The Standard Text Grid

The primary text mode resolution on the Commodore 16 is defined by a grid of 40 columns by 25 rows. This configuration was standard for many home computers of the era, allowing for 1,000 characters to be displayed on the screen simultaneously. Each character within this grid is rendered using an 8x8 pixel matrix, which ensures legibility on standard television sets and composite monitors connected to the machine.

Pixel Density and Hardware

While the text mode is measured in characters, the underlying pixel resolution corresponds to 320 by 200 pixels. This calculation is derived from multiplying the 40-column width by the 8-pixel character width and the 25-row height by the 8-pixel character height. These visuals are powered by the MOS Technology TED (Text Editing Device) chip, model 7360, which integrated video display generation and DRAM refresh functions into a single component.

Comparison to Graphics Modes

It is important to distinguish text mode from the high-resolution graphics mode available on the system. While the text mode is optimized for coding and word processing with its fixed character set, the graphics mode allows for individual pixel manipulation within the same 320x200 boundary. Understanding this distinction helps clarify how the Commodore 16 managed memory and processing power to deliver both functional text interfaces and graphical capabilities.

Legacy and Compatibility

The 40x25 text resolution became a defining characteristic of the Commodore 16 and its sibling, the Plus/4. This standard ensured compatibility with a wide range of software titles and productivity applications designed for the 8-bit ecosystem. Today, this specification remains a key detail for collectors and emulator developers aiming to preserve the authentic visual experience of the hardware.