From Wikipedia, the free encyclopedia DOS.MASTER
DOS.MASTER
DOS.MASTER (also: DOS Master) is a program for Apple
II computers which allows Apple DOS 3.3 programs to be
Modern use
placed on a hard drive or 3½" floppy disk and run from DOS.MASTER is a valuable asset among fans of Apple II
ProDOS. It was written by Glen Bredon (1932 - 2000) as a retro computing, especially considering the very limited
commercial program during the late 1980s where it expe- availability of 5¼" floppy disks and floppy disk drives
rienced widespread success; it was released into the pub- which are required to run DOS 3.3. DOS 3.3 does not sup-
lic domain by his family after the author’s death. port more modern data storage devices like 3½" floppy
DOS.MASTER was created as a result of Apple Com- drives or hard drives. DOS.MASTER can be used with
puter’s abandonment of the DOS 3.3 operating system modern computer hardware such as SCSI hard drives and
and its subsequent replacement by ProDOS. Apple pro- Compact Flash peripheral cards to create multiple DOS
vided a program to copy files from DOS 3.3 volumes to 3.3 partitions. Support for DOS.MASTER has even been
new ProDOS volumes; however, programs written for implemented in modern Apple II archive utilities like
DOS 3.3 did not run on ProDOS volumes. DOS.MASTER Faddensoft’s CiderPress.
enabled a widely installed base of previously ProDOS in-
compatible programs written for DOS 3.3 to be run under
ProDOS. DOS.MASTER took a large ProDOS partition, for-
See also
matted it as a file, and then created a series of DOS 3.3 • Disk II – Apple’s original 5¼" Floppy Disk Drive
volumes within that file. The program allowed the user • List of Apple II application software
to create one of four DOS 3.3 volume sizes: 140 KB (the
standard capacity of an Apple II 5¼" floppy disk), 160 KB,
200 KB, or 400 KB (the maximum that DOS 3.3 could ad-
External links
dress). Up to 255 of these volumes could be created on • DOS.MASTER documentation
the larger ProDOS partition, space allowing, essentially • DOS.MASTER download
simulating a very large stack of virtual floppy disk drives. • CiderPress archive utility
• About Glen Bredon - In Memoriam
• Public domain release notice
Retrieved from "http://en.wikipedia.org/w/index.php?title=DOS.MASTER&oldid=462210846"
Categories:
• Macintosh software stubs
• Apple II software
• Public domain software
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