ProDOS 2.4.3 is the current release, and available for ALL models of the Apple II. Features of ProDOS 2.4.3 include: Compatibility with all 8-bit Apple II's; Bitsy Bye Program Launcher; Disk utilities; ROM ID detection for Apple II clones. Thunderclock driver updated to work beyond 2023, up to 2028; Download ProDOS 2.4.3

Jun 22, 2014 · The best-known and most-used version was Apple DOS 3.3 in the 1980 and 1983 releases. Prior to the release of Apple DOS 3.1, Apple users had to rely on audio cassette tapes for data storage and retrieval, but that method was notoriously slow, inconvenient, and unreliable.

ProDOS is the name of two similar operating systems for the Apple II of personal computer. The original ProDOS, renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II computers, and was distributed from 1983 to 1993.

The third version of DOS 3.3 appeared just before the first release of ProDOS. The only mention of this in the press was in the DOSTalk column of Softalk magazine. This final version of DOS 3.3 included a different fix for the APPEND bug, using another bit of unused space in DOS 3.3.

(On ProDOS you can also use CAT) LOAD filename: Loads a Applesoft BASIC program. SAVE filename: Saves a Applesoft BASIC program. RUN filename: ... DOS 3.3 checks if is readable : Commands for DOS 3.3 Only. Command Description; INIT filename: Formats disk, current BASIC program saved as boot app.

DOS 3.3 is the first DOS to be widely used on Apple II computers. Many. programs were written to use DOS 3.3 commands and saved on DOS 3.3 diskettes. Apple 'officially' replaced DOS 3.3 with ProDOS back in the early '80's. However, DOS 3.3 continues to be popular with II users. Another Apple II DOS is the one introduced with Apple Pascal.

All the Apple computers from the II Plus onward can run both DOS 3.3 and ProDOS, the Plus requiring a "Language Card" memory expansion to use ProDOS; the e and later models have built-in Language Card hardware, and so can run ProDOS straight.

Jun 6, 2020 · This version of ProDOS requires the Apple enhanced ROM chip set and requires a 65c02 or 65816 processor. This version takes off where ProDOS 2.0.3 left off. It is focused on the 8-bit Apple IIe and IIc models. It adds features to the OS and the Launcher that were missing in ProDOS 2.0.3 and have been added to newer releases of ProDOS.

Announcing ProDOS 2.4.3 for all Apple II computers. ProDOS 2.4.3 updates the Thunderclock year table so it goes beyond 2023. ProDOS 2.4.2 replaces the previous ProDOS 2.4, ProDOS 2.4.1, and ProDOS 2.4.2 releases. Bugs fixed: Fix long standing bug where CATALOG would fail on directories that have 128 blocks or more. Fix crash starting A2osX .

This document attempts to give a detailed and correct set of Apple II DOS command line commands, covering those found in official releases of DOS 3.3 and ProDOS. It may also get into usage notes, non-command line OSs (GS/OS), etc, eventually.