Atari 400 Technical Reference Manual page 66

Device/Filename Specification
The Handler expects to find a device/filename specification of
the following form:
DC<:number)]:<:filename)<:EOL)
where:
<number.>
::= 1121314
<filename>
::=
C<primary)]C. C<extension>]]<terminator>
<primary>
::=
an uppercase alpha character followed by 0 to 7
alphanumeric characters. If the primary name is
less than
8
characters, it will be padded with
blanks; if it is greater than
8
characters, the
extra characters will be ignored.
<extension>
::=
Zero to
3
alphanumeric characters. If the
extension name is missing or less than
3
characters, it will be padded with blanks; if
it is greater than 3 characters. the extra
characters will be ignored.
<terminator>
<EOL:>'<:blank>
Figure 5-10
Device/Filename Syntax
The following are all valid device/filenames for the diskette:
Dl:GAME.SRC
D:MANUAL6
D:. WHY
D3:
FILE.
D4:BRIDOE.002
Filename Wildcarding
The filename specification can be further generalized to include
the use of the uwild-card" characters
*
and ? These wildcard
characters allow portions of the primary and/or extension to be
abbreviated as follows:
The? character in the specification allows any filename
chal'ac tel' at that
p
0$
it ion to produce a "matc h. " For e xamp
1
e,
WH?
will match files named
WHO, WHY, WH4, etc., but not a file named
WHAT.
OPERATING SYSTEM C016555 -- Section 5
81