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Chapter 5. More Information About Your
5100
5100 BASIC COMPATIBILITY WITH IBM 370/VS BASIC
The BASIC
language
used
in the 5100 differs from IBM 370/VS BASIC in the
following
areas:
• Lowercase alphabetic characters
are
not
available in the 5100.
• Double quotation marks
are
not
available in the 5100.
• The 5100 provides
only
one
precision (13 digits
of
precision).
• The 5100 provides hexadecimal constants, which
are
enclosed in
single
quotation
marks
and
preceded by X.
• The 5100 allows entry
of
a
TAB
(expression)
within
a PRINT statement.
• The 5100 allows you
to
direct formatted
output
to
either the printer, or the dis-
play
screen
or a tape file. This capability
is
provided through
an
additional
parameter (FLP) in PRINT,
MAT
PRINT, PRINT USING,
and
MAT
PRINT
USING statements.
An
entry
of
FLO-FL9 in this position directs
output
to
the
file referred
to
in a corresponding
OPEN
statement.
•
'The
5100 allows you
to
specify file description information which
is
provided
by the operating system (in 370/VS BASIC).
• The 5100 allows you
to
CHAIN
to
a specified program
without
initializing the
data
area
reserved
by variables specified in a
USE
statement.
• The 5100 allows you
to
list data in the
USE
statement, including dimensions
for arrays. In conjunction with a CHAIN statement, the
USE
statement allows
you
to
pass
data from
one
program
to
another.
• The 5100 provides the TAB(x) function, but
does
not
provide the
following.
VS
BASIC functions: CEN(x), CLK, CNT,
CPU,
DAT(x),
DOT(x,y), FAH(x),
IDX(x,y), JDY(x),
KLN(x),
KPS(x), LEN(x), MAX(x,y,z), MIN(x,y,z), NUM(x),
PRD(x), RLN(x), SUM (x),
and
TIM.
• The 5100
does
not
provide the
ascending
(ASORT)
and
descending (DSORT) array
assignment functions.
• The 5100 requires statement numbers
with
values
up
to
9999,
and
permits special
functions
to
be
assigned
by the
user
to
numbers 9990-9999.
• The 5100
does
not
provide the following BASIC statements: DELETE FILE,
EXIT, FORM, READ
FILE,
REREAD FILE, REWRITE FILE,
and
WRITE
FILE.
143
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