Vector Basic Interpreter Basic 80 Reference Manual - page 11
CRAPTER 1
GENE~
INFORMATION ABOUT BASIC-SO
The procedure for initialization will
vary
with
different
implementations of BASIC-SO.· Check the appropriate appendix
at the back of this manual
to
determine
how
BASIC-SO
is
initialized with your operating system.
1.2
MODES
Q!.
OPERATION
When BASIC-80 is initialized,
it
types
the· prompt
wOkw•
ftOkftmeans
BASIC-SO
is
at
command level, that is, it is
ready to accept commands.
At this point,
BASIC-SO
may
be
used
in
either
of
two
modes:
the
direct
mode or the
indirect mode.
In the direct mode, BASIC
commands and
statements are
not
preceded
by
line
numbers.
They are executed as they are
entered.
Results of arithmetic and logical
operations
may
be
displayed
immediately and stored for later use, but the
instructions themselves are lost after execution.
This mode
is
useful
for
debugging
and
for
using
BASIC
as
a
·calculator
W
for quick computations that do
not
require
a
complete program.
The indirect mode is the mode used
Program lines are preceded by line
memory.
The
program
stored
in
entering the RUN command.
for
entering
programs.
numbers and are stored in
memory
is
executed
by
Program.lines in a BASIC program have ~~e
following
format
(square brackets indicate optional) :
nnnnn BASIC statement[:BASIC statement•••
l