# DOS Plus

> discontinued computer operating system for x86 processors

**Wikidata**: [Q5205892](https://www.wikidata.org/wiki/Q5205892)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/DOS_Plus)  
**Source**: https://4ort.xyz/entity/dos-plus

## Summary
DOS Plus was a discontinued computer operating system for x86 processors developed by Digital Research and based on CP/M-86, released in 1985.

## Key Facts
- It was a discontinued computer operating system for x86 processors
- Based on CP/M-86
- Developed by Digital Research
- Released in 1985
- Ran on Intel 8086 and Intel 80186 processors
- Used assembly language for programming
- Part of the DOS family of operating systems

## FAQs
### Q: What was DOS Plus?
A: DOS Plus was a discontinued computer operating system for x86 processors developed by Digital Research and based on CP/M-86, released in 1985.

### Q: What was it based on?
A: DOS Plus was based on CP/M-86.

### Q: Who developed it?
A: It was developed by Digital Research.

### Q: What processors did it run on?
A: It ran on Intel 8086 and Intel 80186 processors.

## Why It Matters
DOS Plus represented an important evolution in the x86 operating system landscape during the mid-1980s. As a system based on CP/M-86 but positioned within the DOS ecosystem, it helped bridge the gap between CP/M applications and the growing PC market. Its development by Digital Research positioned it alongside competing DOS variants like DR-DOS, contributing to the diversification of operating systems for personal computers during this transitional period in computing history.

## Notable For
- It was based on CP/M-86, bridging CP/M and DOS ecosystems
- It was developed by Digital Research, a key player in early operating system development
- It was released in 1985, during the early PC era
- It ran on Intel 8086 and 80186 processors
- It utilized assembly language for programming

## Body
### Technical Foundation
DOS Plus was built on the CP/M-86 architecture, which itself was an adaptation of the CP/M operating system for the x86 processor architecture. This foundation allowed DOS Plus to maintain compatibility with existing CP/M applications while adapting to the PC market.

### Development and Release
Developed by Digital Research, DOS Plus was released in 1985 as part of the evolving DOS family of operating systems. The 1985 release positioned it during the early PC era when the x86 architecture was becoming dominant.

### Platform Support
The operating system was designed to run on Intel 8086 and Intel 80186 processors, which were standard in early personal computers of that period.

### Programming Environment
Like many operating systems of its era, DOS Plus utilized assembly language for programming, with a strong correspondence between language instructions and the processor's machine code instructions.

### Relationship to Other Systems
DOS Plus was part of the broader DOS ecosystem, related to other operating systems like DR-DOS and positioned alongside the original DOS and CP/M systems.

```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "DOS Plus",
  "description": "A discontinued computer operating system for x86 processors",
  "sameAs": ["https://www.wikidata.org/wiki/Q329873", "https://en.wikipedia.org/wiki/DOS_Plus"]
}