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Keyword Dictionary
AVAIL?
high-level modem
function
R'·.·'AIL?
100 IF NOT AVAIL? THEN 100
Checks to see if there is data available in the modem receive buffer. Returns a 0 if there is no data
available, or a 1 if there is data available. Unlike
t'10D I
t·~$,
which reads any data in the receive buffer,
the data remains in the buffer after
A'·/A I L?
is executed.
R'·/A I L?
can therefore be used as an
alternative to
t'1C!D I
t·~$
for detecting data in the buffer, but not reading it.
• A
I.",
A I L?
only identifies the presence of data in the modem receive buffer, not the presence of data
saved by
t'10DOUT
(see
t·10DOUT).
Errors: 1 50, 1 5 1, 1 53
CARRIER?
high-level modem
function
I
CAF.:R I EF.:?
1
(1(1
IF t·mT CfiPP I EP?
THEt·~
100 EL::;E D I
::;p
II
t·~OI.
•
. 1
on-l
i
ne
II
Checks if there is a carrier. Returns a 0 if there is no carrier present, or a 1 if there is a carrier present.
Errors: 1 50, 1 5 1, 1 5 3
CAT
CAT
"pathname:
::·::t·1Et·1"
CAT ALL ": ::·::t·1Et·1"
See examples below.
electronic disc
statement
Catalogs files and directories on the electronic disc. If you use directory-related characters
C',
<:,
:> )
or
wild cards (-, ?), they imply knowledge of the hierarchical file structure. Directories are listed only
when this knowledge is detected. Below are examples of typical use of
CAT.
The examples are based on
the hierarchical file system illustrated in "Electronic Disc Software" in Section 2. Note that the [t}, [t},
[SHIFT] [t],and [SHIFT] [t] keys work the same as for the HP-7S
CAT
commands.
CAT ": ::·::t·1Et·1"
Catalog all files on the electronic disc (no directories).
62
,
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