Clue: PC software of old

We have 2 answers for the crossword clue PC software of old.

Possible Answers:

• EWING
• MSDOS

Related Clues:

• "Dallas" surname
• Computer environment
• Knicks star Patrick
• "Dallas" name
• Hagman's oilman
• Basis for Windows, originally
• PC acronym
• Computer operating system
• J.R. in "Dallas"
• Some PCs use it
• It was booted before Windows
• That ship
• TV's Jock
• Windows predecessor
• Old PC operating system
• Precursor to Windows
• Hagman's J.R.
• It was opened before Windows
• Early PC software
• See 104 Down
• Cager Patrick
• Early PC environment
• '80s-'90s Knicks star
• Platform introduced in 1981
• Passé PC system
• ... and 18 more.

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