Your 5100; 5100 Basic Compatibility With Ibm 370/Vs Basic - IBM 5100 Basic Reference Manual

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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.
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