Vector Basic Interpreter Basic 80, Reference Manual, Page: 141 / 190

APPENDIX B
BASIC-SO Disk I/O
Disk I/O procedures for the beginning BASIC-SO user are
examined in this appendix. If you are new to BASIC-SO or if
you're getting disk related errors, read through these
procedures and program examples to make sure you're using
all the disk statements correctly.
Wherever a filename is required in a disk command or
statement, use a name that conforms to your operating
system's requirements for filenames. The CP/M operating
system will append a default extension .BAS to the filename
given in a SAVE, RUN, MERGE or LOAD command.
Here is a review of the commands and statements used in
program file manipulation.
Writes to disk the program that is
currently residing in memory.
Optional A writes the program as a
series of ASCII characters.
(Otherwise, BASIC uses a compressed
binary format.)
Loads the program from disk into
memory. Optional R runs the program
immediately. LOAD always deletes the
current contents of memory and closes
all files before LOADing. If R is
included, however, open data files are
kept open. Thus programs can be
chained or loaded in sections and
access the same data files.