System information

Similarly, the command
A>DIR X?Y.C?M
causes a search for all unambiguous filenames on the disk that satisfy this ambiguous reference.
The following file references are valid unambiguous file references:
X
X.Y
XYZ
XYZ.COM
GAMMA
GAMMA.1
As an added convenience, the programmer can generally specify the disk drive name along with
the filename. In this case, the drive name is given as a letter A through P followed by a colon (:).
The specified drive is then logged-in before the file operation occurs. Thus, the following are
valid file references with disk name prefixes:
A:X.Y
P:XYZ.COM
B:XYZ
B:X.A?M
C:GAMMA
C:*.ASM
All alphabetic lower-case letters in file and drive names are translated to upper-case when they
are processed by the CCP.
1.2 Functional Description CP/M Operating System Manual
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