Intel 9800758-02 manual BASIC-80 Commands Contd, BASIC-80 Statements

Language Elements BASIC-80

Table 2-1. BASIC-80 Commands (Cont'd.)

Command	Description	Example
MERGE	Combines file program with current	MERGE ":F1:TIME"
	program.
NEW	Deletes current program, clears	NEW
	variables.
NULL	Specifies nulls added to a line.	NULL 20
PRUN	Executes program in ROM.	PRUN 4EOOH
RENAME	Changes file name.	RENAME ":F1 :SOUP" TO ":F1 :NUTS"
RENUM	Changes program line numbers.	RENUM
RUN	Executes program.	RUN
SAVE	Stores program or file on disk.	SAVE ":F1:INVEN"
TRON	Turns on trace facility.	TRON
TROFF	Turns off trace facility.	TROFF
WIDTH	Changes width of display line.	WIDTH 80

Table 2-2. BASIC-80 Statements

Statement		Description	Example
CLOSE	Closes one or more files.		CLOSE 3
DATA	Identifies values that can be assigned		DATA 9,0, "JUNE", .33
	with a READ statement.
DEF	Defines a user-written function.		DEF FNRT (R1, R2)
			= R1 *R2/(R1 + R2)
DEFDBL	Defines variable names starting with		DEFDBL R-Z
	the given letter as double-precision
	floating-point.
DEFINT	Defines variable names starting with		DEFINT I-N
	the given letter as integer.
DEFSNG	Defines variable names starting with		DEFSNG B-H, X, Y
	the given letter as single-precision
	floating point.
DEFSTR	Defines variable names starting with		DEFSTR K-O
	the given letter as string variable
	names.
DEFUSR	Defines non-BASIC subroutine.		DEFUSR 0 = 4EOOH
DIM	Allocates space for array variables.		DIM char (25,10,25)
END	Concludes program.		END
ERROR	Simulates errors with given error		ERROR 12
FIELD	number.
	Allocates space in random file buffer.		FIELD #3,20 AS A$
FOR-NEXT-STEP	Creates a loop.		FOR 1=1 TO 5 STEP.5
			NEXTI
GET	Retrieves data from disk file.		GET#2,4
GOSUB	Transfers execution to subroutine.		GOSUB 550
GOTO	Transfers execution to line number.		GOT0400
IF-TH EN-ELSE	When the expression specified is true,		IF A>B THEN 2~0
	the statement executes; if false, a		ELSE PRINT ">"
	second statement executes.
INPUT	1.	Prompts for terminal input in	INPUT A, B, C
		program
	2.	Reads data from sequential file.	INPUT #1, A$, B$, C$
LET	Assigns value to variables.		LET A=52

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