Reading the disk with the CATalog? ALL query
The following example program reads the catalog of the currently selected
disk drive. The CATALOG? ALL query returns the entire 70-character field.
Because DOS directory entries are 70 characters long, you should use the
CATALOG? ALL query with DOS disks.
10 ! ****** DISK CATALOG ******
20 ! using the CATALOG? ALL query
30 !
40 DIM File$[100]
50 DIM Specifier$[2]
60 OUTPUT 707;":EOI ON"
70 OUTPUT 707;":SYSTEM:HEADER OFF"
80 OUTPUT 707;":MMEMORY:MSI INTERNAL0" ! select the hard drive
90 OUTPUT 707;":MMEMORY:CATALOG? ALL" ! send CATALOG? ALL query
100 !
110 ENTER 707 USING "#,2A";Specifier$ ! read in #8
120 ENTER 707 USING "#,8D";Length ! read in block length
130 !
140 ! Read and print each file in the directory
150 !
160 FOR I=1 TO Length STEP 70
170 ENTER 707 USING "#,70A";File$
180 PRINT File$
190 NEXT I
200 ENTER 707 USING "A";Specifier$ ! read in final line feed
210 END
Programming Examples
Reading the disk with the CATalog? ALL query
15–10
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