# Intel 8089

> input/output coprocessor available for use with the Intel 8086 and Intel 8088 CPUs

**Wikidata**: [Q1665562](https://www.wikidata.org/wiki/Q1665562)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Intel_8089)  
**Source**: https://4ort.xyz/entity/intel-8089

## Summary
The Intel 8089 is an input/output coprocessor designed for use with the Intel 8086 and Intel 8088 central processing units (CPUs). As a coprocessor, it functions as a supplementary computer processor that executes under the logical control of a main processor to handle specific tasks.

## Key Facts
- **Classification**: The Intel 8089 is an instance of a **coprocessor**.
- **Primary Function**: It serves as an **input/output coprocessor**.
- **Compatibility**: The device is available for use with the **Intel 8086** and **Intel 8088** CPUs.
- **Alias**: It is also known simply as the **8089**.
- **Operational Role**: It operates as a supplementary processor that executes under the logical control of a main processor.
- **Library of Congress ID**: sh85067153.
- **Wikidata Description**: Defined as an "input/output coprocessor available for use with the Intel 8086 and Intel 8088 CPUs."

## FAQs
### Q: What is the Intel 8089?
A: The Intel 8089 is an input/output coprocessor. It is a supplementary processor designed to work alongside the Intel 8086 and Intel 8088 CPUs.

### Q: How does the Intel 8089 function in a computer system?
A: It functions as a coprocessor, meaning it is a supplementary computer processor that executes under the logical control of a main processor (specifically the 8086 or 8088).

### Q: Which processors is the Intel 8089 compatible with?
A: The Intel 8089 is compatible with the Intel 8086 and Intel 8088 central processing units.

## Why It Matters
The Intel 8089 represents a specific approach to computer architecture where input/output tasks are offloaded from the main CPU to a dedicated supplementary processor. By serving as a specialized I/O coprocessor for the Intel 8086 and 8088, it allowed the main processor to focus on general computing tasks while the 8089 managed data flow and peripheral communication.

This division of labor is fundamental to the concept of coprocessing, where auxiliary hardware executes under the logical control of the main CPU to improve system efficiency. Its existence highlights the modular design strategies employed during the era of the 8086 and 8088 processors, distinguishing between general-purpose processing and specialized I/O handling.

## Notable For
- **Dedicated I/O Processing**: Being specifically designed as an input/output coprocessor rather than a general-purpose CPU.
- **Intel 8086/8088 Integration**: Its specific availability for use with the Intel 8086 and Intel 8088 microprocessors.
- **Coprocessor Architecture**: Serving as a physical implementation of a supplementary processor that executes under logical control of a main processor.

## Body
### Classification and Definition
The Intel 8089 is classified as a **coprocessor**. In computing architecture, a coprocessor is defined as a supplementary computer processor that executes under the logical control of a main processor. The 8089 distinctively serves as an **input/output coprocessor**, a role that differentiates it from math coprocessors (like the 8087) which handle numerical calculations.

### System Compatibility
The device is explicitly engineered for compatibility with two specific Intel microprocessors:
- **Intel 8086**
- **Intel 8088**

The Wikidata description confirms its purpose as an "input/output coprocessor available for use with" these specific CPUs.

### Identification and Resources
The entity is identified by the alias **8089**. It is categorized under the Library of Congress Authority ID **sh85067153** and the National Library of Israel J9U ID **987007555627705171**.

Visual resources associated with the Intel 8089 include:
- **Die Shot**: `Intel_8089_die2.JPG` (available via Wikimedia Commons).
- **Schematic**: `Intel_8089.svg` (available via Wikimedia Commons).

The entry maintains a presence across multiple Wikipedia languages, including English, German, Spanish, Russian, Czech, and Serbian, indicating its recognized role in computer history.

## References

1. National Library of Israel Names and Subjects Authority File