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Digital Research DR DOS 3.33

[PCjs Machine "ibm5170-drdos333"]

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Directory of DR DOS 3.33

 Volume in drive A has no label
 Directory of A:\

DRBIOS   SYS     15760   9-01-88   3:33a
DRBDOS   SYS     37970   9-01-88   3:33a
COMMAND  COM     31760   9-01-88   3:33a
SYS      COM     13609   9-01-88   3:33a
        4 file(s)      99099 bytes
                      260096 bytes free