Apple ProDOS 8
Source: wikipedia.org - Apple ProDOS 8

Apple ProDOS 8


The Apple ProDOS 8 is a disk operating system developed by Apple in 1983 especially for the Apple II computer series. ProDOS 8 has been publicly released on 1 August 1983 and was the most popular operating system for the Apple II series of computers. The original ProDOS renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II series computers, and was distributed until 6 May 1993. ProDOS was marketed by Apple as meaning Professional Disk Operating System.

Apple ProDOS 8 was released to address shortcomings in the earlier Apple operating system (called simply DOS), which was beginning to show its age. Apple DOS only has built-in support for 5.25″ floppy disks and requires patches to use peripheral devices such as hard disk drives and non-Disk II floppy disk drives, including 3.5″ floppy drives. ProDOS adds a standard method of accessing ROM-based drivers on expansion cards for disk devices, expands the maximum volume size from about 400 kilobytes to 32 megabytes, introduces support for hierarchical subdirectories (a vital feature for organizing a hard disk’s storage space), and supports RAM disks on machines with 128KB or more of memory.

Today Apple ProDOS 8 is 37 years old!

Apple ProDOS 8 – General information

Overview

Introduced1 August 1983
Discontinued6 May 1993
System RequirementsApple II computer
DistributionFloppy disk

ProDOS Versions

ProDOS VersionRelease Date
ProDOS 1.01 August 1983
ProDOS 1.01 September 1983
ProDOS 1.01 October 1983
ProDOS 1.01 November 1983
ProDOS 1.0.11 January 1984
ProDOS 1.0.215 February 1984
ProDOS 1.117 August 1984
ProDOS 1.1.118 September 1984
ProDOS 8 1.26 September 1986
ProDOS 8 1.32 December 1986
ProDOS 8 1.417 April 1987
ProDOS 8 1.52 April 1988
ProDOS 8 1.614 June 1988
ProDOS 8 1.78 August 1988
ProDOS 8 1.823 May 1989
ProDOS 8 1.916 July 1990
ProDOS 8 2.022 January 1992
ProDOS 8 2.0.14 March 1992
ProDOS 8 2.0.22 November 1992
ProDOS 8 2.0.36 May 1993

ProDOS BASIC Versions

BASIC System versionsRelease Date
ProDOS BASIC 1.01 September 1983
ProDOS BASIC 1.015 November 1983
ProDOS BASIC 1.118 June 1984
ProDOS BASIC 1.214 December 1987
ProDOS BASIC 1.317 June 1989
ProDOS BASIC 1.41 August 1989
ProDOS BASIC 1.4.117 July 1990
ProDOS BASIC 1.56 May 1993

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