Cromemco DOS
# Cromemco DOS

Cromemco DOS or CDOS (an abbreviation for Cromemco Disk Operating System) is a CP/M-like operating system by Cromemco designed to allow users of Cromemco microcomputer systems to create and manipulate disk files using symbolic names.

## Overview

CDOS was written in Zilog Z80 machine code. Due to the number of available programs available to run under Digital Research CP/M at that time, CDOS was designed to be upwards CP/M-compatible. Many programs written for CP/M versions up to and including version 1.33 run without modification under CDOS. However, programs written for CDOS generally do not run under CP/M.

The Cromemco Z-2 had the ability to run Cromemco DOS. Besides CP/M 2.2 and Cromix, the Cromemco System One can also run Cromemco DOS. The Cromemco C-10 personal computer, introduced in 1982, also ran CDOS.

An emulator for a Cromemco CDOS system exists.

## Commands

The following list of commands are supported by Cromemco DOS.

### Intrinsic commands

* BYE
* DIR
* ERA
* REN
* SAVE
* TYPE

Later versions also support the ATTR command.

### Extrinsic command programs

* @ (Batch)
* DUMP
* EDIT
* INIT (Initialize)
* STAT (Disk Status)
* WRTSYS (Write System)
* XFER (Transfer)

Later versions also support the MEMTEST command.

