ENABLE Verb - Enable Disk Access
Syntax
ENABLE disk{,ERR=lineref}
Description
The ENABLE verb includes the specified disk
in the file location. Once a disk
is enabled, it cannot be re-enabled, unless it has first been DISABLEd.
PRO/5 takes the optional error branch if the disk
cannot be enabled. An !ERROR=14 results if the disk was already ENABLEd.
The disk argument may be a number
or string. A numeric argument must evaluate to a meaningful integer, where
0 = drive A:, 1 = drive B:, and so on. A string argument should contain
the desired drive letter, and, optionally, a colon (:).
Examples
0500 ENABLE "C:"
1000 LET A=4; ENABLE A, ERR=9500
1000 ENABLE "A", ERR=9500
Note the difference between ENABLE A and ENABLE "A".