VERSAdos is an

operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also in ...

dating back to the early 1980s for use on the

Motorola 68000 The Motorola 68000 (sometimes shortened to Motorola 68k or m68k and usually pronounced "sixty-eight-thousand") is a 16/32-bit complex instruction set computer (CISC) microprocessor, introduced in 1979 by Motorola Semiconductor Products Sector ...

development system called the ''

EXORmacs VERSAdos is an operating system dating back to the early 1980s for use on the Motorola 68000 development system called the '' EXORmacs'' which featured the VERSAbus and an array of option cards. They were typically connected to CDC Phoenix disk d ...

'' which featured the

VERSAbus VMEbus (Versa Module Europa or Versa Module Eurocard bus) is a computer bus standard, originally developed for the Motorola 68000 line of CPUs, but later widely used for many applications and standardized by the IEC as ANSI/IEEE 1014-1987. ...

and an array of option cards. They were typically connected to CDC Phoenix disk drives running one to four 14-inch platters. The EXORmacs was used to emulate a 680xx processor in-circuit, speeding development of 680xx based systems. It also hosted several compilers and assemblers. VERSAdos and the EXORmacs were produced by

Motorola Motorola, Inc. () was an American Multinational corporation, multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent p ...

's Microsystems Division.

Overview

VERSAdos was a

real-time Real-time or real time describes various operations in computing or other processes that must guarantee response times within a specified time (deadline), usually a relatively short time. A real-time process is generally one that happens in defined ...

multi-user Multi-user software is computer software that allows access by multiple users of a computer. Time-sharing systems are multi-user systems. Most batch processing systems for mainframe computers may also be considered "multi-user", to avoid leaving t ...

operating system. It was the follow on product to the single user MDOS that ran the 6800 development system called the

EXORciser The 6800 ("''sixty-eight hundred''") is an 8-bit microprocessor designed and first manufactured by Motorola in 1974. The MC6800 microprocessor was part of the M6800 Microcomputer System (latter dubbed ''68xx'') that also included serial and paral ...

. Both systems features a harness with a

CPU socket In computer hardware, a CPU socket or CPU slot contains one or more mechanical components providing mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows for placing and replacing the centr ...

compatible connector. A

Modula 2 Modula-2 is a structured, procedural programming language developed between 1977 and 1985/8 by Niklaus Wirth at ETH Zurich. It was created as the language for the operating system and application software of the Lilith personal workstation. It ...

compiler was ported to VERSAdos.

Commands

The following list of commands and utilities are supported by VERSAdos.M68000 Family VERSAdos System Facilities Reference Manual
/ref> * ^ * ACCT * ARGUMENTS * ASSIGN * BACKUP * BATCH * BSTOP * BTERM * BUILDS * BYE * CANCEL * CHAIN * CLOSE * CONFIG * CONNECT * CONTINUE *

COPY Copy may refer to: *Copying or the product of copying (including the plural "copies"); the duplication of information or an artifact **Cut, copy and paste, a method of reproducing text or other data in computing **File copying **Photocopying, a pr ...

* CREF *

DATE Date or dates may refer to: *Date (fruit), the fruit of the date palm (''Phoenix dactylifera'') Social activity *Dating, a form of courtship involving social activity, with the aim of assessing a potential partner ** Group dating *Play date, a ...

* DEFAULTS *

DEL Del, or nabla, is an operator used in mathematics (particularly in vector calculus) as a vector differential operator, usually represented by the nabla symbol ∇. When applied to a function defined on a one-dimensional domain, it denotes th ...

* DIR * DMT * DUMP * DUMPANAL * ELIMINATE * EMFGEN * END * FREE *

HELP Help is a word meaning to give aid or signal distress. Help may refer to: Arts, entertainment, and media Films * ''Help'' (2010 film), a Bollywood horror film * ''Help'' (2021 theatrical film), a British psychological thriller film * '' ...

* INIT * LIB * LIST * LOAD * LOGOFF * MBLM * MERGEOS * MIGR * MT * NEWS * NOARGUMENTS * NOVALID * OFF * OPTION * PASS * PASSWORD * PATCH * PROCEED * PRTDUMP * QUERY * R? * RENAME * REPAIR * RETRY * SCRATCH * SECURE * SESSIONS * SNAPSHOT * SPL * SPOOL * SRCCOM *

START Start can refer to multiple topics: *Takeoff, the phase of flight where an aircraft transitions from moving along the ground to flying through the air * Starting lineup in sports *Standing start, and rolling start, in an auto race Acronyms *St ...

* STOP * SWORD * SYSANAL * TERMINATE *

TIME Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to ...

* TRANSFER * UPLOADS * USE * VALID

References

External links

http://bitsavers.org/pdf/motorola/versados/
* https://www.ricomputermuseum.org/collections-gallery/small-systems-at-ricm/motorola-exormacs-development-system Discontinued operating systems Motorola {{operating-system-stub

Overview

Commands

See also

References

External links