# OS 901

> Croatian variant of the MP/M operating system

**Wikidata**: [Q16115194](https://www.wikidata.org/wiki/Q16115194)  
**Source**: https://4ort.xyz/entity/os-901

## Summary
OS 901 is a Croatian variant of the MP/M operating system, designed specifically for the TRS-901 computer model. It was developed by TRS Zagreb to provide a multi-user computing environment on this domestically produced hardware.

## Key Facts
- OS 901 is an instance of the class "operating system".
- It is based on the MP/M operating system.
- OS 901 is designed to run exclusively on the TRS-901 computer model.
- It was developed by the company TRS Zagreb.
- It originates from Croatia.
- The entity has 1 sitelink recorded.
- It is documented only in the Croatian language ("hr") on Wikipedia.

## FAQs
### Q: What is OS 901?
A: OS 901 is a Croatian variant of the MP/M operating system, specifically developed for the TRS-901 computer model by TRS Zagreb.

### Q: What operating system is OS 901 based on?
A: OS 901 is based on the MP/M operating system.

### Q: Which hardware does OS 901 run on?
A: OS 901 is designed to run on the TRS-901 computer model.

### Q: Who developed OS 901?
A: OS 901 was developed by TRS Zagreb.

### Q: What is the origin country of OS 901?
A: OS 901 originates from Croatia.

## Why It Matters
OS 901 is significant as a localized software adaptation within Croatia's early computing landscape. By providing a multi-user operating system (MP/M) tailored for the domestically produced TRS-901 hardware, it enabled more efficient use of the country's scarce computing resources in the late 1970s or early 1980s. This adaptation demonstrates the practical application of standard operating systems (MP/M) to specific, nationally produced hardware, facilitating better resource management and potentially wider access to computing capabilities within Croatian institutions during a formative period for technology adoption.

## Notable For
*   Its status as a dedicated Croatian variant of the MP/M operating system.
*   Being specifically engineered and deployed for the TRS-901 computer model, reflecting a domestic hardware-software ecosystem.
*   Development by TRS Zagreb, a key entity in Croatian computing at the time.
*   Representing an early example of adapting an established multi-user OS (MP/M) for localized hardware production in Yugoslavia/Croatia.

## Body
### Overview
OS 901 is an operating system entity recognized as a Croatian variant of MP/M.
*   It belongs to the class of operating systems.
*   Its country of origin is Croatia.

### Foundation and Derivatives
*   OS 901 is explicitly based on the MP/M operating system.
*   MP/M itself is a multi-user version of the earlier CP/M operating system (inception 1974).
*   MP/M was first released in 1979.
*   This lineage positions OS 901 within the broader CP/M family tree, inherited from MP/M.

### Hardware Compatibility
*   OS 901 is designed to run solely on the TRS-901 computer model.
*   The TRS-901 is a Croatian computer model.
*   This specific hardware requirement defines the platform for which OS 901 was created.

### Development and Documentation
*   OS 901 was developed by TRS Zagreb.
*   Knowledge about OS 901 is documented primarily in the Croatian language ("hr").
*   The entity currently has 1 recorded sitelink.
*   It has 9 recorded sitelinks for the related MP/M entity and 45 for CP/M, highlighting its niche status compared to its parent systems.